./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/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 ec3757812c1b019f09c89d48ffb6e1a791c4e1300d7182e4ab4acc854dc06a88 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:18:27,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:18:27,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:18:27,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:18:27,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:18:27,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:18:27,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:18:27,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:18:27,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:18:27,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:18:27,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:18:27,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:18:27,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:18:27,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:18:27,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:18:27,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:18:27,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:18:27,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:18:27,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:18:27,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:18:27,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:18:27,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:18:27,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:18:27,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:18:27,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:18:27,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:18:27,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:18:27,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:18:27,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:18:27,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:18:27,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:18:27,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:18:27,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:18:27,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:18:27,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:18:27,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:18:27,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:18:27,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:18:27,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:18:27,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:18:27,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:18:27,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:18:27,575 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:18:27,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:18:27,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:18:27,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:18:27,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:18:27,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:18:27,578 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:18:27,578 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:18:27,578 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:18:27,579 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:18:27,579 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:18:27,579 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:18:27,580 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:18:27,580 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:18:27,580 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:18:27,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:18:27,581 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:18:27,581 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:18:27,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:18:27,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:18:27,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:18:27,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:18:27,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:18:27,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:18:27,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:18:27,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:18:27,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:18:27,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:18:27,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:18:27,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:27,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:18:27,587 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:18:27,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:18:27,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:18:27,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:18:27,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:18:27,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:18:27,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:18:27,589 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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec3757812c1b019f09c89d48ffb6e1a791c4e1300d7182e4ab4acc854dc06a88 [2022-11-03 02:18:27,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:18:27,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:18:27,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:18:27,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:18:27,995 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:18:27,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c [2022-11-03 02:18:28,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data/73f609101/c2a18382f073494faa2ce434e1ff0309/FLAGff3ee6b23 [2022-11-03 02:18:28,832 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:18:28,834 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c [2022-11-03 02:18:28,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data/73f609101/c2a18382f073494faa2ce434e1ff0309/FLAGff3ee6b23 [2022-11-03 02:18:28,990 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data/73f609101/c2a18382f073494faa2ce434e1ff0309 [2022-11-03 02:18:28,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:18:28,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:18:29,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:29,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:18:29,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:18:29,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:28" (1/1) ... [2022-11-03 02:18:29,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e2e413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29, skipping insertion in model container [2022-11-03 02:18:29,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:28" (1/1) ... [2022-11-03 02:18:29,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:18:29,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:18:29,400 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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c[1107,1120] [2022-11-03 02:18:29,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:29,787 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:18:29,798 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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c[1107,1120] [2022-11-03 02:18:29,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:29,964 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:18:29,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29 WrapperNode [2022-11-03 02:18:29,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:29,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:29,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:18:29,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:18:29,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,185 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2066 [2022-11-03 02:18:30,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:30,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:18:30,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:18:30,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:18:30,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,379 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:18:30,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:18:30,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:18:30,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:18:30,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (1/1) ... [2022-11-03 02:18:30,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:30,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:30,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:18:30,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:18:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:18:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:18:31,185 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:18:31,187 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:18:35,272 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:18:38,718 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:18:38,719 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:18:38,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:38 BoogieIcfgContainer [2022-11-03 02:18:38,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:18:38,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:18:38,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:18:38,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:18:38,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:18:28" (1/3) ... [2022-11-03 02:18:38,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6741059f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:38, skipping insertion in model container [2022-11-03 02:18:38,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:29" (2/3) ... [2022-11-03 02:18:38,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6741059f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:38, skipping insertion in model container [2022-11-03 02:18:38,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:38" (3/3) ... [2022-11-03 02:18:38,735 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vending.c [2022-11-03 02:18:38,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:18:38,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:18:38,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:18:38,830 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;@4dc2d482, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:18:38,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:18:38,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:18:38,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:38,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:18:38,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:38,853 INFO L85 PathProgramCache]: Analyzing trace with hash 32035353, now seen corresponding path program 1 times [2022-11-03 02:18:38,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:38,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515151394] [2022-11-03 02:18:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:38,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:18:42,241 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:18:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:18:44,281 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:18:44,283 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:18:44,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:18:44,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:18:44,293 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:18:44,298 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:18:44,356 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:18:44,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:18:44 BoogieIcfgContainer [2022-11-03 02:18:44,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:18:44,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:18:44,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:18:44,389 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:18:44,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:38" (3/4) ... [2022-11-03 02:18:44,394 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:18:44,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:18:44,397 INFO L158 Benchmark]: Toolchain (without parser) took 15399.10ms. Allocated memory was 121.6MB in the beginning and 687.9MB in the end (delta: 566.2MB). Free memory was 85.7MB in the beginning and 491.0MB in the end (delta: -405.3MB). Peak memory consumption was 160.4MB. Max. memory is 16.1GB. [2022-11-03 02:18:44,398 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 81.8MB. Free memory was 57.0MB in the beginning and 56.9MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:18:44,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 964.38ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 63.8MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-03 02:18:44,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 219.53ms. Allocated memory is still 121.6MB. Free memory was 63.8MB in the beginning and 47.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 02:18:44,407 INFO L158 Benchmark]: Boogie Preprocessor took 246.38ms. Allocated memory is still 121.6MB. Free memory was 47.0MB in the beginning and 84.2MB in the end (delta: -37.2MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-03 02:18:44,409 INFO L158 Benchmark]: RCFGBuilder took 8289.18ms. Allocated memory was 121.6MB in the beginning and 687.9MB in the end (delta: 566.2MB). Free memory was 83.8MB in the beginning and 360.0MB in the end (delta: -276.2MB). Peak memory consumption was 299.5MB. Max. memory is 16.1GB. [2022-11-03 02:18:44,410 INFO L158 Benchmark]: TraceAbstraction took 5659.91ms. Allocated memory is still 687.9MB. Free memory was 360.0MB in the beginning and 492.1MB in the end (delta: -132.1MB). Peak memory consumption was 141.6MB. Max. memory is 16.1GB. [2022-11-03 02:18:44,411 INFO L158 Benchmark]: Witness Printer took 6.96ms. Allocated memory is still 687.9MB. Free memory was 492.1MB in the beginning and 491.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:18:44,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 81.8MB. Free memory was 57.0MB in the beginning and 56.9MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 964.38ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 63.8MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 219.53ms. Allocated memory is still 121.6MB. Free memory was 63.8MB in the beginning and 47.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 246.38ms. Allocated memory is still 121.6MB. Free memory was 47.0MB in the beginning and 84.2MB in the end (delta: -37.2MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8289.18ms. Allocated memory was 121.6MB in the beginning and 687.9MB in the end (delta: 566.2MB). Free memory was 83.8MB in the beginning and 360.0MB in the end (delta: -276.2MB). Peak memory consumption was 299.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5659.91ms. Allocated memory is still 687.9MB. Free memory was 360.0MB in the beginning and 492.1MB in the end (delta: -132.1MB). Peak memory consumption was 141.6MB. Max. memory is 16.1GB. * Witness Printer took 6.96ms. Allocated memory is still 687.9MB. Free memory was 492.1MB in the beginning and 491.0MB 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 bitwiseComplement at line 304, overapproximation of bitwiseOr at line 259, overapproximation of bitwiseAnd at line 166. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 2); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (2 - 1); [L31] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 4); [L32] const SORT_9 msb_SORT_9 = (SORT_9)1 << (4 - 1); [L34] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 3); [L35] const SORT_10 msb_SORT_10 = (SORT_10)1 << (3 - 1); [L37] const SORT_10 var_11 = 0; [L38] const SORT_1 var_14 = 0; [L39] const SORT_4 var_16 = 0; [L40] const SORT_9 var_33 = 8; [L41] const SORT_9 var_40 = 7; [L42] const SORT_4 var_52 = 1; [L43] const SORT_1 var_56 = 1; [L44] const SORT_4 var_66 = 2; [L45] const SORT_9 var_72 = 0; [L46] const SORT_4 var_79 = 3; [L47] const SORT_9 var_98 = 5; [L48] const SORT_10 var_120 = 1; [L49] const SORT_9 var_122 = 15; [L50] const SORT_9 var_150 = 6; [L51] const SORT_9 var_315 = 1; [L53] SORT_1 input_2; [L54] SORT_1 input_3; [L55] SORT_4 input_5; [L56] SORT_1 input_6; [L57] SORT_1 input_7; [L58] SORT_1 input_8; [L59] SORT_4 input_103; [L60] SORT_10 input_116; [L61] SORT_10 input_117; [L62] SORT_10 input_118; [L63] SORT_10 input_119; [L64] SORT_10 input_128; [L65] SORT_10 input_135; [L66] SORT_10 input_142; [L67] SORT_10 input_143; [L68] SORT_10 input_144; [L69] SORT_10 input_149; [L70] SORT_10 input_153; [L71] SORT_10 input_159; [L72] SORT_4 input_174; [L73] SORT_4 input_175; [L74] SORT_4 input_176; [L75] SORT_4 input_177; [L76] SORT_4 input_184; [L77] SORT_4 input_187; [L78] SORT_4 input_195; [L79] SORT_4 input_202; [L80] SORT_4 input_203; [L81] SORT_4 input_204; [L82] SORT_4 input_207; [L83] SORT_4 input_209; [L84] SORT_4 input_214; [L85] SORT_4 input_223; [L86] SORT_1 input_235; [L87] SORT_1 input_236; [L88] SORT_1 input_237; [L89] SORT_1 input_238; [L90] SORT_1 input_245; [L91] SORT_1 input_248; [L92] SORT_1 input_251; [L93] SORT_1 input_261; [L94] SORT_4 input_276; [L95] SORT_4 input_280; [L96] SORT_4 input_281; [L97] SORT_4 input_282; [L98] SORT_4 input_283; [L99] SORT_4 input_287; [L100] SORT_4 input_292; [L101] SORT_4 input_301; [L102] SORT_9 input_311; [L103] SORT_9 input_312; [L104] SORT_9 input_313; [L105] SORT_9 input_314; [L106] SORT_9 input_320; [L107] SORT_9 input_326; [L108] SORT_9 input_333; [L109] SORT_9 input_334; [L110] SORT_9 input_335; [L111] SORT_9 input_338; [L112] SORT_9 input_340; [L113] SORT_9 input_344; [L114] SORT_9 input_345; [L115] SORT_9 input_349; [L116] SORT_9 input_354; [L117] SORT_9 input_372; [L118] SORT_9 input_373; [L119] SORT_9 input_374; [L120] SORT_9 input_375; [L121] SORT_9 input_380; [L122] SORT_9 input_383; [L123] SORT_9 input_391; [L124] SORT_9 input_398; [L125] SORT_9 input_399; [L126] SORT_9 input_400; [L127] SORT_9 input_403; [L128] SORT_9 input_405; [L129] SORT_9 input_410; [L130] SORT_9 input_419; [L131] SORT_9 input_430; [L132] SORT_9 input_431; [L133] SORT_9 input_432; [L134] SORT_9 input_433; [L135] SORT_9 input_438; [L136] SORT_9 input_441; [L137] SORT_9 input_444; [L138] SORT_9 input_454; [L140] SORT_10 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L141] SORT_4 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L142] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L143] SORT_4 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L144] SORT_9 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L145] SORT_4 state_96 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L146] SORT_9 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L147] SORT_9 state_113 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L149] SORT_10 init_13_arg_1 = var_11; [L150] state_12 = init_13_arg_1 [L151] SORT_4 init_18_arg_1 = var_16; [L152] state_17 = init_18_arg_1 [L153] SORT_1 init_23_arg_1 = var_14; [L154] state_22 = init_23_arg_1 [L155] SORT_4 init_51_arg_1 = var_16; [L156] state_50 = init_51_arg_1 [L157] SORT_9 init_74_arg_1 = var_72; [L158] state_73 = init_74_arg_1 [L159] SORT_9 init_112_arg_1 = var_72; [L160] state_111 = init_112_arg_1 [L161] SORT_9 init_114_arg_1 = var_72; [L162] state_113 = init_114_arg_1 VAL [init_112_arg_1=0, init_114_arg_1=0, init_13_arg_1=0, init_18_arg_1=0, init_23_arg_1=0, init_51_arg_1=0, init_74_arg_1=0, mask_SORT_1=1, mask_SORT_10=7, mask_SORT_4=3, mask_SORT_9=15, msb_SORT_1=1, msb_SORT_10=4, msb_SORT_4=2, msb_SORT_9=8, state_111=0, state_113=0, state_12=0, state_17=0, state_22=0, state_50=0, state_73=0, state_96=1, var_11=0, var_120=1, var_122=15, var_14=0, var_150=6, var_16=0, var_315=1, var_33=8, var_40=7, var_52=1, var_56=1, var_66=2, var_72=0, var_79=3, var_98=5] [L165] input_2 = __VERIFIER_nondet_uchar() [L166] input_2 = input_2 & mask_SORT_1 [L167] input_3 = __VERIFIER_nondet_uchar() [L168] input_5 = __VERIFIER_nondet_uchar() [L169] input_6 = __VERIFIER_nondet_uchar() [L170] input_6 = input_6 & mask_SORT_1 [L171] input_7 = __VERIFIER_nondet_uchar() [L172] input_7 = input_7 & mask_SORT_1 [L173] input_8 = __VERIFIER_nondet_uchar() [L174] input_8 = input_8 & mask_SORT_1 [L175] input_103 = __VERIFIER_nondet_uchar() [L176] input_116 = __VERIFIER_nondet_uchar() [L177] input_117 = __VERIFIER_nondet_uchar() [L178] input_118 = __VERIFIER_nondet_uchar() [L179] input_119 = __VERIFIER_nondet_uchar() [L180] input_128 = __VERIFIER_nondet_uchar() [L181] input_135 = __VERIFIER_nondet_uchar() [L182] input_142 = __VERIFIER_nondet_uchar() [L183] input_143 = __VERIFIER_nondet_uchar() [L184] input_144 = __VERIFIER_nondet_uchar() [L185] input_149 = __VERIFIER_nondet_uchar() [L186] input_153 = __VERIFIER_nondet_uchar() [L187] input_159 = __VERIFIER_nondet_uchar() [L188] input_174 = __VERIFIER_nondet_uchar() [L189] input_175 = __VERIFIER_nondet_uchar() [L190] input_176 = __VERIFIER_nondet_uchar() [L191] input_177 = __VERIFIER_nondet_uchar() [L192] input_184 = __VERIFIER_nondet_uchar() [L193] input_187 = __VERIFIER_nondet_uchar() [L194] input_195 = __VERIFIER_nondet_uchar() [L195] input_202 = __VERIFIER_nondet_uchar() [L196] input_203 = __VERIFIER_nondet_uchar() [L197] input_204 = __VERIFIER_nondet_uchar() [L198] input_207 = __VERIFIER_nondet_uchar() [L199] input_209 = __VERIFIER_nondet_uchar() [L200] input_214 = __VERIFIER_nondet_uchar() [L201] input_223 = __VERIFIER_nondet_uchar() [L202] input_235 = __VERIFIER_nondet_uchar() [L203] input_236 = __VERIFIER_nondet_uchar() [L204] input_237 = __VERIFIER_nondet_uchar() [L205] input_238 = __VERIFIER_nondet_uchar() [L206] input_245 = __VERIFIER_nondet_uchar() [L207] input_248 = __VERIFIER_nondet_uchar() [L208] input_251 = __VERIFIER_nondet_uchar() [L209] input_261 = __VERIFIER_nondet_uchar() [L210] input_276 = __VERIFIER_nondet_uchar() [L211] input_280 = __VERIFIER_nondet_uchar() [L212] input_281 = __VERIFIER_nondet_uchar() [L213] input_282 = __VERIFIER_nondet_uchar() [L214] input_283 = __VERIFIER_nondet_uchar() [L215] input_287 = __VERIFIER_nondet_uchar() [L216] input_292 = __VERIFIER_nondet_uchar() [L217] input_301 = __VERIFIER_nondet_uchar() [L218] input_311 = __VERIFIER_nondet_uchar() [L219] input_312 = __VERIFIER_nondet_uchar() [L220] input_313 = __VERIFIER_nondet_uchar() [L221] input_314 = __VERIFIER_nondet_uchar() [L222] input_320 = __VERIFIER_nondet_uchar() [L223] input_326 = __VERIFIER_nondet_uchar() [L224] input_333 = __VERIFIER_nondet_uchar() [L225] input_334 = __VERIFIER_nondet_uchar() [L226] input_335 = __VERIFIER_nondet_uchar() [L227] input_338 = __VERIFIER_nondet_uchar() [L228] input_340 = __VERIFIER_nondet_uchar() [L229] input_344 = __VERIFIER_nondet_uchar() [L230] input_345 = __VERIFIER_nondet_uchar() [L231] input_349 = __VERIFIER_nondet_uchar() [L232] input_354 = __VERIFIER_nondet_uchar() [L233] input_372 = __VERIFIER_nondet_uchar() [L234] input_373 = __VERIFIER_nondet_uchar() [L235] input_374 = __VERIFIER_nondet_uchar() [L236] input_375 = __VERIFIER_nondet_uchar() [L237] input_380 = __VERIFIER_nondet_uchar() [L238] input_383 = __VERIFIER_nondet_uchar() [L239] input_391 = __VERIFIER_nondet_uchar() [L240] input_398 = __VERIFIER_nondet_uchar() [L241] input_399 = __VERIFIER_nondet_uchar() [L242] input_400 = __VERIFIER_nondet_uchar() [L243] input_403 = __VERIFIER_nondet_uchar() [L244] input_405 = __VERIFIER_nondet_uchar() [L245] input_410 = __VERIFIER_nondet_uchar() [L246] input_419 = __VERIFIER_nondet_uchar() [L247] input_430 = __VERIFIER_nondet_uchar() [L248] input_431 = __VERIFIER_nondet_uchar() [L249] input_432 = __VERIFIER_nondet_uchar() [L250] input_433 = __VERIFIER_nondet_uchar() [L251] input_438 = __VERIFIER_nondet_uchar() [L252] input_441 = __VERIFIER_nondet_uchar() [L253] input_444 = __VERIFIER_nondet_uchar() [L254] input_454 = __VERIFIER_nondet_uchar() [L257] SORT_1 var_15_arg_0 = var_14; [L258] SORT_10 var_15_arg_1 = state_12; [L259] SORT_9 var_15 = ((SORT_9)var_15_arg_0 << 3) | var_15_arg_1; [L260] SORT_4 var_19_arg_0 = state_17; [L261] SORT_1 var_19_arg_1 = var_14; [L262] SORT_10 var_19 = ((SORT_10)var_19_arg_0 << 1) | var_19_arg_1; [L263] var_19 = var_19 & mask_SORT_10 [L264] SORT_1 var_20_arg_0 = var_14; [L265] SORT_10 var_20_arg_1 = var_19; [L266] SORT_9 var_20 = ((SORT_9)var_20_arg_0 << 3) | var_20_arg_1; [L267] SORT_9 var_21_arg_0 = var_15; [L268] SORT_9 var_21_arg_1 = var_20; [L269] SORT_9 var_21 = var_21_arg_0 + var_21_arg_1; [L270] SORT_1 var_24_arg_0 = var_14; [L271] SORT_1 var_24_arg_1 = state_22; [L272] SORT_4 var_24 = ((SORT_4)var_24_arg_0 << 1) | var_24_arg_1; [L273] var_24 = var_24 & mask_SORT_4 [L274] SORT_1 var_25_arg_0 = state_22; [L275] SORT_4 var_25_arg_1 = var_24; [L276] SORT_10 var_25 = ((SORT_10)var_25_arg_0 << 2) | var_25_arg_1; [L277] var_25 = var_25 & mask_SORT_10 [L278] SORT_1 var_26_arg_0 = var_14; [L279] SORT_10 var_26_arg_1 = var_25; [L280] SORT_9 var_26 = ((SORT_9)var_26_arg_0 << 3) | var_26_arg_1; [L281] SORT_9 var_27_arg_0 = var_21; [L282] SORT_9 var_27_arg_1 = var_26; [L283] SORT_9 var_27 = var_27_arg_0 + var_27_arg_1; [L284] var_27 = var_27 & mask_SORT_9 [L285] SORT_9 var_28_arg_0 = var_27; [L286] SORT_1 var_28 = var_28_arg_0 >> 3; [L287] var_28 = var_28 & mask_SORT_1 [L288] SORT_1 var_29_arg_0 = var_28; [L289] SORT_1 var_29_arg_1 = var_14; [L290] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L291] SORT_9 var_30_arg_0 = var_27; [L292] SORT_4 var_30 = var_30_arg_0 >> 1; [L293] var_30 = var_30 & mask_SORT_4 [L294] SORT_4 var_31_arg_0 = var_30; [L295] SORT_4 var_31_arg_1 = var_16; [L296] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L297] SORT_1 var_32_arg_0 = var_29; [L298] SORT_1 var_32_arg_1 = var_31; [L299] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L300] SORT_9 var_34_arg_0 = var_27; [L301] SORT_9 var_34_arg_1 = var_33; [L302] SORT_1 var_34 = var_34_arg_0 == var_34_arg_1; [L303] SORT_1 var_35_arg_0 = var_34; [L304] SORT_1 var_35 = ~var_35_arg_0; [L305] SORT_10 var_36_arg_0 = state_12; [L306] SORT_10 var_36_arg_1 = var_11; [L307] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L308] SORT_1 var_37_arg_0 = var_36; [L309] SORT_1 var_37 = ~var_37_arg_0; [L310] SORT_1 var_38_arg_0 = var_35; [L311] SORT_1 var_38_arg_1 = var_37; [L312] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L313] SORT_1 var_39_arg_0 = var_32; [L314] SORT_1 var_39_arg_1 = var_38; [L315] SORT_1 var_39 = var_39_arg_0 & var_39_arg_1; [L316] SORT_9 var_41_arg_0 = var_27; [L317] SORT_9 var_41_arg_1 = var_40; [L318] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L319] SORT_1 var_42_arg_0 = var_41; [L320] SORT_1 var_42 = ~var_42_arg_0; [L321] SORT_10 var_43_arg_0 = state_12; [L322] SORT_10 var_43_arg_1 = var_11; [L323] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L324] SORT_1 var_44_arg_0 = var_43; [L325] SORT_1 var_44 = ~var_44_arg_0; [L326] SORT_4 var_45_arg_0 = state_17; [L327] SORT_4 var_45_arg_1 = var_16; [L328] SORT_1 var_45 = var_45_arg_0 == var_45_arg_1; [L329] SORT_1 var_46_arg_0 = var_45; [L330] SORT_1 var_46 = ~var_46_arg_0; [L331] SORT_1 var_47_arg_0 = var_44; [L332] SORT_1 var_47_arg_1 = var_46; [L333] SORT_1 var_47 = var_47_arg_0 | var_47_arg_1; [L334] SORT_1 var_48_arg_0 = var_42; [L335] SORT_1 var_48_arg_1 = var_47; [L336] SORT_1 var_48 = var_48_arg_0 | var_48_arg_1; [L337] SORT_1 var_49_arg_0 = var_39; [L338] SORT_1 var_49_arg_1 = var_48; [L339] SORT_1 var_49 = var_49_arg_0 & var_49_arg_1; [L340] SORT_4 var_53_arg_0 = state_50; [L341] SORT_4 var_53_arg_1 = var_52; [L342] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L343] SORT_9 var_54_arg_0 = var_27; [L344] SORT_9 var_54_arg_1 = var_40; [L345] SORT_1 var_54 = var_54_arg_0 == var_54_arg_1; [L346] SORT_1 var_55_arg_0 = var_53; [L347] SORT_1 var_55_arg_1 = var_54; [L348] SORT_1 var_55 = var_55_arg_0 & var_55_arg_1; [L349] SORT_1 var_57_arg_0 = var_28; [L350] SORT_1 var_57_arg_1 = var_56; [L351] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L352] SORT_1 var_58_arg_0 = var_55; [L353] SORT_1 var_58_arg_1 = var_57; [L354] SORT_1 var_58 = var_58_arg_0 | var_58_arg_1; [L355] SORT_1 var_59_arg_0 = var_58; [L356] SORT_1 var_59 = ~var_59_arg_0; [L357] SORT_10 var_60_arg_0 = state_12; [L358] SORT_10 var_60_arg_1 = var_11; [L359] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L360] SORT_4 var_61_arg_0 = state_17; [L361] SORT_4 var_61_arg_1 = var_16; [L362] SORT_1 var_61 = var_61_arg_0 == var_61_arg_1; [L363] SORT_1 var_62_arg_0 = var_60; [L364] SORT_1 var_62_arg_1 = var_61; [L365] SORT_1 var_62 = var_62_arg_0 & var_62_arg_1; [L366] SORT_1 var_63_arg_0 = var_62; [L367] SORT_1 var_63 = ~var_63_arg_0; [L368] SORT_1 var_64_arg_0 = var_59; [L369] SORT_1 var_64_arg_1 = var_63; [L370] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L371] SORT_1 var_65_arg_0 = var_49; [L372] SORT_1 var_65_arg_1 = var_64; [L373] SORT_1 var_65 = var_65_arg_0 & var_65_arg_1; [L374] SORT_4 var_67_arg_0 = state_50; [L375] SORT_4 var_67_arg_1 = var_66; [L376] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L377] SORT_1 var_68_arg_0 = var_67; [L378] SORT_1 var_68 = ~var_68_arg_0; [L379] SORT_1 var_69_arg_0 = state_22; [L380] SORT_1 var_69_arg_1 = var_14; [L381] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L382] SORT_10 var_70_arg_0 = state_12; [L383] SORT_10 var_70_arg_1 = var_11; [L384] SORT_1 var_70 = var_70_arg_0 == var_70_arg_1; [L385] SORT_1 var_71_arg_0 = var_69; [L386] SORT_1 var_71_arg_1 = var_70; [L387] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L388] SORT_9 var_75_arg_0 = state_73; [L389] SORT_9 var_75_arg_1 = var_72; [L390] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L391] SORT_1 var_76_arg_0 = var_71; [L392] SORT_1 var_76_arg_1 = var_75; [L393] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L394] SORT_1 var_77_arg_0 = var_68; [L395] SORT_1 var_77_arg_1 = var_76; [L396] SORT_1 var_77 = var_77_arg_0 | var_77_arg_1; [L397] SORT_1 var_78_arg_0 = var_65; [L398] SORT_1 var_78_arg_1 = var_77; [L399] SORT_1 var_78 = var_78_arg_0 & var_78_arg_1; [L400] SORT_4 var_80_arg_0 = state_50; [L401] SORT_4 var_80_arg_1 = var_79; [L402] SORT_1 var_80 = var_80_arg_0 == var_80_arg_1; [L403] SORT_1 var_81_arg_0 = var_80; [L404] SORT_1 var_81 = ~var_81_arg_0; [L405] SORT_9 var_82_arg_0 = var_27; [L406] SORT_4 var_82 = var_82_arg_0 >> 2; [L407] var_82 = var_82 & mask_SORT_4 [L408] SORT_4 var_83_arg_0 = var_82; [L409] SORT_4 var_83_arg_1 = var_52; [L410] SORT_1 var_83 = var_83_arg_0 == var_83_arg_1; [L411] SORT_9 var_84_arg_0 = var_27; [L412] SORT_4 var_84 = var_84_arg_0 >> 0; [L413] var_84 = var_84 & mask_SORT_4 [L414] SORT_4 var_85_arg_0 = var_84; [L415] SORT_4 var_85_arg_1 = var_52; [L416] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L417] SORT_4 var_86_arg_0 = var_84; [L418] SORT_4 var_86_arg_1 = var_66; [L419] SORT_1 var_86 = var_86_arg_0 == var_86_arg_1; [L420] SORT_1 var_87_arg_0 = var_85; [L421] SORT_1 var_87_arg_1 = var_86; [L422] SORT_1 var_87 = var_87_arg_0 | var_87_arg_1; [L423] SORT_1 var_88_arg_0 = var_83; [L424] SORT_1 var_88_arg_1 = var_87; [L425] SORT_1 var_88 = var_88_arg_0 & var_88_arg_1; [L426] SORT_1 var_89_arg_0 = var_81; [L427] SORT_1 var_89_arg_1 = var_88; [L428] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L429] SORT_1 var_90_arg_0 = var_78; [L430] SORT_1 var_90_arg_1 = var_89; [L431] SORT_1 var_90 = var_90_arg_0 & var_90_arg_1; [L432] SORT_1 var_93_arg_0 = var_90; [L433] SORT_1 var_93 = ~var_93_arg_0; [L434] SORT_1 var_94_arg_0 = var_56; [L435] SORT_1 var_94_arg_1 = var_93; [L436] SORT_1 var_94 = var_94_arg_0 & var_94_arg_1; [L437] var_94 = var_94 & mask_SORT_1 [L438] SORT_1 bad_95_arg_0 = var_94; [L439] CALL __VERIFIER_assert(!(bad_95_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: 5.5s, 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, 3.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:18:44,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/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 ec3757812c1b019f09c89d48ffb6e1a791c4e1300d7182e4ab4acc854dc06a88 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:18:46,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:18:46,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:18:47,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:18:47,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:18:47,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:18:47,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:18:47,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:18:47,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:18:47,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:18:47,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:18:47,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:18:47,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:18:47,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:18:47,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:18:47,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:18:47,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:18:47,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:18:47,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:18:47,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:18:47,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:18:47,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:18:47,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:18:47,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:18:47,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:18:47,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:18:47,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:18:47,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:18:47,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:18:47,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:18:47,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:18:47,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:18:47,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:18:47,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:18:47,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:18:47,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:18:47,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:18:47,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:18:47,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:18:47,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:18:47,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:18:47,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:18:47,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:18:47,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:18:47,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:18:47,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:18:47,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:18:47,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:18:47,142 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:18:47,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:18:47,142 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:18:47,143 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:18:47,144 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:18:47,144 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:18:47,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:18:47,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:18:47,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:18:47,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:18:47,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:18:47,147 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:18:47,147 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:18:47,147 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:18:47,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:18:47,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:18:47,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:18:47,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:18:47,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:18:47,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:18:47,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:47,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:18:47,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:18:47,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:18:47,150 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:18:47,150 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:18:47,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:18:47,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:18:47,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:18:47,151 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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec3757812c1b019f09c89d48ffb6e1a791c4e1300d7182e4ab4acc854dc06a88 [2022-11-03 02:18:47,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:18:47,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:18:47,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:18:47,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:18:47,578 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:18:47,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c [2022-11-03 02:18:47,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data/5d370c2df/fd946f5fb1114b6d8a088ea23818166c/FLAG67d6ae3a7 [2022-11-03 02:18:48,276 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:18:48,277 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c [2022-11-03 02:18:48,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data/5d370c2df/fd946f5fb1114b6d8a088ea23818166c/FLAG67d6ae3a7 [2022-11-03 02:18:48,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/data/5d370c2df/fd946f5fb1114b6d8a088ea23818166c [2022-11-03 02:18:48,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:18:48,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:18:48,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:48,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:18:48,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:18:48,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:48,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1a63fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48, skipping insertion in model container [2022-11-03 02:18:48,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:48,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:18:48,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:18:48,943 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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c[1107,1120] [2022-11-03 02:18:49,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:49,406 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:18:49,420 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_c67dda79-29e7-4aa5-827d-6520c95b7d7e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c[1107,1120] [2022-11-03 02:18:49,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:49,628 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:18:49,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49 WrapperNode [2022-11-03 02:18:49,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:49,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:49,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:18:49,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:18:49,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,826 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2066 [2022-11-03 02:18:49,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:49,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:18:49,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:18:49,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:18:49,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:18:49,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:18:49,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:18:49,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:18:49,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (1/1) ... [2022-11-03 02:18:49,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:49,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:49,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:18:50,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:18:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:18:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:18:50,729 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:18:50,744 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:18:52,482 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:18:52,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:18:52,496 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:18:52,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:52 BoogieIcfgContainer [2022-11-03 02:18:52,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:18:52,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:18:52,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:18:52,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:18:52,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:18:48" (1/3) ... [2022-11-03 02:18:52,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc0195f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:52, skipping insertion in model container [2022-11-03 02:18:52,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:49" (2/3) ... [2022-11-03 02:18:52,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc0195f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:52, skipping insertion in model container [2022-11-03 02:18:52,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:52" (3/3) ... [2022-11-03 02:18:52,511 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vending.c [2022-11-03 02:18:52,535 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:18:52,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:18:52,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:18:52,628 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;@35a4ea72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:18:52,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:18:52,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 301 states, 299 states have (on average 1.4983277591973243) internal successors, (448), 300 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:18:52,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:52,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:18:52,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 02:18:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:52,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429256468] [2022-11-03 02:18:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:52,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:52,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:52,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:18:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:53,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-03 02:18:53,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:54,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:54,675 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:54,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429256468] [2022-11-03 02:18:54,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429256468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:54,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:54,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194486030] [2022-11-03 02:18:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:54,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:18:54,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:54,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:18:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:18:54,736 INFO L87 Difference]: Start difference. First operand has 301 states, 299 states have (on average 1.4983277591973243) internal successors, (448), 300 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:55,276 INFO L93 Difference]: Finished difference Result 890 states and 1335 transitions. [2022-11-03 02:18:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:55,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 02:18:55,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:55,295 INFO L225 Difference]: With dead ends: 890 [2022-11-03 02:18:55,295 INFO L226 Difference]: Without dead ends: 591 [2022-11-03 02:18:55,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:55,304 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 874 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:55,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1245 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:18:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-03 02:18:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 299. [2022-11-03 02:18:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4899328859060403) internal successors, (444), 298 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 02:18:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 444 transitions. [2022-11-03 02:18:55,363 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 444 transitions. Word has length 5 [2022-11-03 02:18:55,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:55,364 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 444 transitions. [2022-11-03 02:18:55,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:55,364 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 444 transitions. [2022-11-03 02:18:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:18:55,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:55,379 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:55,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 02:18:55,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:55,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:55,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1271257693, now seen corresponding path program 1 times [2022-11-03 02:18:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312052566] [2022-11-03 02:18:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:55,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:55,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:55,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:18:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:56,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:18:56,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:56,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:56,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:56,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312052566] [2022-11-03 02:18:56,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312052566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:56,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:56,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524342222] [2022-11-03 02:18:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:56,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:18:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:18:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:18:56,935 INFO L87 Difference]: Start difference. First operand 299 states and 444 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:57,307 INFO L93 Difference]: Finished difference Result 1179 states and 1758 transitions. [2022-11-03 02:18:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:18:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:57,315 INFO L225 Difference]: With dead ends: 1179 [2022-11-03 02:18:57,315 INFO L226 Difference]: Without dead ends: 884 [2022-11-03 02:18:57,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:57,320 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1305 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:57,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1686 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:18:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-03 02:18:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 301. [2022-11-03 02:18:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.4866666666666666) internal successors, (446), 300 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 02:18:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 446 transitions. [2022-11-03 02:18:57,342 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 446 transitions. Word has length 298 [2022-11-03 02:18:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:57,343 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 446 transitions. [2022-11-03 02:18:57,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 446 transitions. [2022-11-03 02:18:57,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:18:57,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:57,348 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:57,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:57,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:57,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash -375026523, now seen corresponding path program 1 times [2022-11-03 02:18:57,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:57,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768920338] [2022-11-03 02:18:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:57,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:57,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:57,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:18:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:58,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:18:58,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:58,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:58,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:58,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768920338] [2022-11-03 02:18:58,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768920338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:58,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:58,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:18:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521046911] [2022-11-03 02:18:58,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:58,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:18:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:58,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:18:58,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:58,944 INFO L87 Difference]: Start difference. First operand 301 states and 446 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:59,341 INFO L93 Difference]: Finished difference Result 1186 states and 1765 transitions. [2022-11-03 02:18:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:18:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:18:59,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:59,351 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:18:59,352 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:18:59,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:18:59,356 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1312 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:59,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 2581 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 23 Unchecked, 0.3s Time] [2022-11-03 02:18:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:18:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 305. [2022-11-03 02:18:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.4835526315789473) internal successors, (451), 304 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 451 transitions. [2022-11-03 02:18:59,397 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 451 transitions. Word has length 298 [2022-11-03 02:18:59,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:59,399 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 451 transitions. [2022-11-03 02:18:59,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 451 transitions. [2022-11-03 02:18:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:18:59,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:59,419 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:59,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:59,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:59,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash -682572633, now seen corresponding path program 1 times [2022-11-03 02:18:59,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:59,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390520324] [2022-11-03 02:18:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:59,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:59,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:59,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:59,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:19:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:00,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:00,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:00,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:00,996 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390520324] [2022-11-03 02:19:00,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390520324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:00,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:00,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398683979] [2022-11-03 02:19:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:00,999 INFO L87 Difference]: Start difference. First operand 305 states and 451 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:01,398 INFO L93 Difference]: Finished difference Result 1184 states and 1761 transitions. [2022-11-03 02:19:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:01,404 INFO L225 Difference]: With dead ends: 1184 [2022-11-03 02:19:01,404 INFO L226 Difference]: Without dead ends: 889 [2022-11-03 02:19:01,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:01,414 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1302 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:01,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 2548 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 27 Unchecked, 0.3s Time] [2022-11-03 02:19:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-03 02:19:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 307. [2022-11-03 02:19:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4803921568627452) internal successors, (453), 306 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 453 transitions. [2022-11-03 02:19:01,430 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 453 transitions. Word has length 298 [2022-11-03 02:19:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:01,431 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 453 transitions. [2022-11-03 02:19:01,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 453 transitions. [2022-11-03 02:19:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:01,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:01,439 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:01,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:01,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:01,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1089596119, now seen corresponding path program 1 times [2022-11-03 02:19:01,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:01,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445366706] [2022-11-03 02:19:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:01,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:01,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:01,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:01,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:19:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:02,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:02,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:02,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:02,673 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445366706] [2022-11-03 02:19:02,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445366706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:02,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:02,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:02,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387646209] [2022-11-03 02:19:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:02,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:02,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:02,677 INFO L87 Difference]: Start difference. First operand 307 states and 453 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:03,093 INFO L93 Difference]: Finished difference Result 1186 states and 1763 transitions. [2022-11-03 02:19:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:03,099 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:03,099 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:03,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:03,101 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1727 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:03,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 2546 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:03,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 309. [2022-11-03 02:19:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.4772727272727273) internal successors, (455), 308 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 455 transitions. [2022-11-03 02:19:03,114 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 455 transitions. Word has length 298 [2022-11-03 02:19:03,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:03,115 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 455 transitions. [2022-11-03 02:19:03,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 455 transitions. [2022-11-03 02:19:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:03,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:03,121 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:03,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:03,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash -678846933, now seen corresponding path program 1 times [2022-11-03 02:19:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:03,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490855891] [2022-11-03 02:19:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:03,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:03,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:03,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:03,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:19:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:04,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:04,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:04,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:04,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:04,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490855891] [2022-11-03 02:19:04,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490855891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:04,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:04,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:04,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465917128] [2022-11-03 02:19:04,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:04,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:04,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:04,567 INFO L87 Difference]: Start difference. First operand 309 states and 455 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:04,905 INFO L93 Difference]: Finished difference Result 1186 states and 1762 transitions. [2022-11-03 02:19:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:04,910 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:04,910 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:04,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:04,913 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1294 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:04,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 2578 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 23 Unchecked, 0.2s Time] [2022-11-03 02:19:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 311. [2022-11-03 02:19:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.4741935483870967) internal successors, (457), 310 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 457 transitions. [2022-11-03 02:19:04,928 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 457 transitions. Word has length 298 [2022-11-03 02:19:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:04,929 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 457 transitions. [2022-11-03 02:19:04,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 457 transitions. [2022-11-03 02:19:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:04,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:04,935 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:04,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:05,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:05,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:05,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1408729005, now seen corresponding path program 1 times [2022-11-03 02:19:05,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:05,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911499473] [2022-11-03 02:19:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:05,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:05,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:05,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:05,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:19:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:06,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:06,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:06,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:06,368 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911499473] [2022-11-03 02:19:06,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911499473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:06,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:06,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:06,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532889464] [2022-11-03 02:19:06,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:06,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:06,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:06,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:06,371 INFO L87 Difference]: Start difference. First operand 311 states and 457 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:06,747 INFO L93 Difference]: Finished difference Result 1186 states and 1761 transitions. [2022-11-03 02:19:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:06,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:06,751 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:06,752 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:06,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:06,754 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1288 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:06,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 2561 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-03 02:19:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 313. [2022-11-03 02:19:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.4711538461538463) internal successors, (459), 312 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 459 transitions. [2022-11-03 02:19:06,772 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 459 transitions. Word has length 298 [2022-11-03 02:19:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:06,773 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 459 transitions. [2022-11-03 02:19:06,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:06,773 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 459 transitions. [2022-11-03 02:19:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:06,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:06,783 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:06,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:06,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:06,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash -434906705, now seen corresponding path program 1 times [2022-11-03 02:19:07,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:07,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14172087] [2022-11-03 02:19:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:07,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:07,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:07,005 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:07,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:19:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:07,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:07,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:08,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:08,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:08,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14172087] [2022-11-03 02:19:08,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14172087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:08,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:08,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:08,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546129538] [2022-11-03 02:19:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:08,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:08,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:08,023 INFO L87 Difference]: Start difference. First operand 313 states and 459 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:08,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:08,368 INFO L93 Difference]: Finished difference Result 1186 states and 1760 transitions. [2022-11-03 02:19:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:08,373 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:08,373 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:08,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:08,374 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1706 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:08,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 2534 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 315. [2022-11-03 02:19:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.4681528662420382) internal successors, (461), 314 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 461 transitions. [2022-11-03 02:19:08,387 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 461 transitions. Word has length 298 [2022-11-03 02:19:08,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:08,387 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 461 transitions. [2022-11-03 02:19:08,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 461 transitions. [2022-11-03 02:19:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:08,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:08,393 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:08,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 02:19:08,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:08,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:08,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1071461327, now seen corresponding path program 1 times [2022-11-03 02:19:08,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:08,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463518950] [2022-11-03 02:19:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:08,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:08,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:08,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:08,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:19:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:09,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:09,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:09,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:09,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:09,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463518950] [2022-11-03 02:19:09,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463518950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:09,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:09,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:09,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061485101] [2022-11-03 02:19:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:09,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:09,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:09,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:09,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:09,553 INFO L87 Difference]: Start difference. First operand 315 states and 461 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:09,909 INFO L93 Difference]: Finished difference Result 1186 states and 1759 transitions. [2022-11-03 02:19:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:09,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:09,914 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:09,914 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:09,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:09,919 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1694 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:09,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 2527 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 319. [2022-11-03 02:19:09,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4654088050314464) internal successors, (466), 318 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 466 transitions. [2022-11-03 02:19:09,932 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 466 transitions. Word has length 298 [2022-11-03 02:19:09,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:09,932 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 466 transitions. [2022-11-03 02:19:09,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:09,933 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 466 transitions. [2022-11-03 02:19:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:09,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:09,938 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:09,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:10,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:10,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash -855421005, now seen corresponding path program 1 times [2022-11-03 02:19:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:10,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657229178] [2022-11-03 02:19:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:10,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:10,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:10,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:10,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:19:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:10,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:10,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:11,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:11,133 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:11,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657229178] [2022-11-03 02:19:11,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657229178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:11,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:11,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:11,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779189572] [2022-11-03 02:19:11,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:11,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:11,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:11,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:11,136 INFO L87 Difference]: Start difference. First operand 319 states and 466 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:11,345 INFO L93 Difference]: Finished difference Result 1179 states and 1750 transitions. [2022-11-03 02:19:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:19:11,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:11,349 INFO L225 Difference]: With dead ends: 1179 [2022-11-03 02:19:11,350 INFO L226 Difference]: Without dead ends: 884 [2022-11-03 02:19:11,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:11,351 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1247 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:11,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 1711 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-03 02:19:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 321. [2022-11-03 02:19:11,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.4625) internal successors, (468), 320 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 468 transitions. [2022-11-03 02:19:11,363 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 468 transitions. Word has length 298 [2022-11-03 02:19:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:11,363 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 468 transitions. [2022-11-03 02:19:11,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 468 transitions. [2022-11-03 02:19:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:11,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:11,368 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:11,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:11,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:11,583 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:11,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1339214773, now seen corresponding path program 1 times [2022-11-03 02:19:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:11,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449591243] [2022-11-03 02:19:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:11,586 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:11,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:19:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:12,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:19:12,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:12,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:12,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:12,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449591243] [2022-11-03 02:19:12,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449591243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:12,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:12,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:12,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949962382] [2022-11-03 02:19:12,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:12,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:12,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:12,747 INFO L87 Difference]: Start difference. First operand 321 states and 468 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:13,100 INFO L93 Difference]: Finished difference Result 1204 states and 1784 transitions. [2022-11-03 02:19:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:13,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:13,104 INFO L225 Difference]: With dead ends: 1204 [2022-11-03 02:19:13,104 INFO L226 Difference]: Without dead ends: 909 [2022-11-03 02:19:13,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:13,106 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1308 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:13,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 2593 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 37 Unchecked, 0.3s Time] [2022-11-03 02:19:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-11-03 02:19:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 325. [2022-11-03 02:19:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.4598765432098766) internal successors, (473), 324 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 473 transitions. [2022-11-03 02:19:13,118 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 473 transitions. Word has length 298 [2022-11-03 02:19:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:13,118 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 473 transitions. [2022-11-03 02:19:13,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 473 transitions. [2022-11-03 02:19:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:13,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:13,121 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:13,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:13,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:13,351 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1573611337, now seen corresponding path program 1 times [2022-11-03 02:19:13,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:13,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894190472] [2022-11-03 02:19:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:13,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:13,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:13,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:13,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:19:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:14,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:19:14,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:14,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:14,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:14,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894190472] [2022-11-03 02:19:14,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894190472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:14,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:14,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:14,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115429520] [2022-11-03 02:19:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:14,576 INFO L87 Difference]: Start difference. First operand 325 states and 473 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:14,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:14,907 INFO L93 Difference]: Finished difference Result 1204 states and 1783 transitions. [2022-11-03 02:19:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:14,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:14,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:14,912 INFO L225 Difference]: With dead ends: 1204 [2022-11-03 02:19:14,912 INFO L226 Difference]: Without dead ends: 909 [2022-11-03 02:19:14,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:14,913 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1292 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:14,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 2573 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-03 02:19:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-11-03 02:19:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 331. [2022-11-03 02:19:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.4575757575757575) internal successors, (481), 330 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 481 transitions. [2022-11-03 02:19:14,925 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 481 transitions. Word has length 298 [2022-11-03 02:19:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:14,926 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 481 transitions. [2022-11-03 02:19:14,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 481 transitions. [2022-11-03 02:19:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:14,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:14,928 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:14,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:15,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:15,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:15,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1590898887, now seen corresponding path program 1 times [2022-11-03 02:19:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:15,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026299816] [2022-11-03 02:19:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:15,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:15,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:15,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:15,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:19:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:15,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:15,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:16,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:16,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:16,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026299816] [2022-11-03 02:19:16,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026299816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:16,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:16,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:16,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430947801] [2022-11-03 02:19:16,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:16,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:16,114 INFO L87 Difference]: Start difference. First operand 331 states and 481 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:16,481 INFO L93 Difference]: Finished difference Result 1186 states and 1755 transitions. [2022-11-03 02:19:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:16,486 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:16,486 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:16,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:16,487 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 1636 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:16,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 2493 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 339. [2022-11-03 02:19:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.455621301775148) internal successors, (492), 338 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 492 transitions. [2022-11-03 02:19:16,501 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 492 transitions. Word has length 298 [2022-11-03 02:19:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:16,501 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 492 transitions. [2022-11-03 02:19:16,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 492 transitions. [2022-11-03 02:19:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:16,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:16,504 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:16,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:16,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:16,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1766021189, now seen corresponding path program 1 times [2022-11-03 02:19:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:16,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323086006] [2022-11-03 02:19:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:16,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:16,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:16,734 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:19:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:17,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:19:17,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:17,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:17,640 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:17,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323086006] [2022-11-03 02:19:17,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323086006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:17,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:17,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:17,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950828181] [2022-11-03 02:19:17,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:17,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:17,643 INFO L87 Difference]: Start difference. First operand 339 states and 492 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:18,023 INFO L93 Difference]: Finished difference Result 1184 states and 1751 transitions. [2022-11-03 02:19:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:18,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:18,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:18,033 INFO L225 Difference]: With dead ends: 1184 [2022-11-03 02:19:18,034 INFO L226 Difference]: Without dead ends: 889 [2022-11-03 02:19:18,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:18,039 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1625 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:18,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1625 Valid, 2484 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-03 02:19:18,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 341. [2022-11-03 02:19:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.4529411764705882) internal successors, (494), 340 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 494 transitions. [2022-11-03 02:19:18,063 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 494 transitions. Word has length 298 [2022-11-03 02:19:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:18,064 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 494 transitions. [2022-11-03 02:19:18,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 494 transitions. [2022-11-03 02:19:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:18,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:18,067 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:18,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:18,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:18,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:18,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:18,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1609779011, now seen corresponding path program 1 times [2022-11-03 02:19:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:18,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494125670] [2022-11-03 02:19:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:18,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:18,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:18,286 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:18,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:19:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:19,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:19:19,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:19,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:19,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:19,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494125670] [2022-11-03 02:19:19,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494125670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:19,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:19,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305211259] [2022-11-03 02:19:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:19,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:19,246 INFO L87 Difference]: Start difference. First operand 341 states and 494 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:19,421 INFO L93 Difference]: Finished difference Result 1179 states and 1745 transitions. [2022-11-03 02:19:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:19:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:19,426 INFO L225 Difference]: With dead ends: 1179 [2022-11-03 02:19:19,426 INFO L226 Difference]: Without dead ends: 884 [2022-11-03 02:19:19,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:19,428 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1187 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:19,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1712 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:19,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-03 02:19:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 343. [2022-11-03 02:19:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.4502923976608186) internal successors, (496), 342 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 496 transitions. [2022-11-03 02:19:19,444 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 496 transitions. Word has length 298 [2022-11-03 02:19:19,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:19,444 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 496 transitions. [2022-11-03 02:19:19,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 496 transitions. [2022-11-03 02:19:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:19,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:19,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:19,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:19,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:19,675 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -925818305, now seen corresponding path program 1 times [2022-11-03 02:19:19,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:19,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605154058] [2022-11-03 02:19:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:19,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:19,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:19,678 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:19,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:19:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:20,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:20,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:20,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:20,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:20,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605154058] [2022-11-03 02:19:20,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605154058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:20,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:20,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:20,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975303895] [2022-11-03 02:19:20,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:20,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:20,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:20,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:20,787 INFO L87 Difference]: Start difference. First operand 343 states and 496 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:21,145 INFO L93 Difference]: Finished difference Result 1226 states and 1812 transitions. [2022-11-03 02:19:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:21,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:21,151 INFO L225 Difference]: With dead ends: 1226 [2022-11-03 02:19:21,151 INFO L226 Difference]: Without dead ends: 931 [2022-11-03 02:19:21,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:21,153 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1687 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:21,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 2539 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:21,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-11-03 02:19:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 345. [2022-11-03 02:19:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.447674418604651) internal successors, (498), 344 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 498 transitions. [2022-11-03 02:19:21,169 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 498 transitions. Word has length 298 [2022-11-03 02:19:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 498 transitions. [2022-11-03 02:19:21,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 498 transitions. [2022-11-03 02:19:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:21,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:21,173 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:21,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:21,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:21,399 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:21,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:21,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1153039295, now seen corresponding path program 1 times [2022-11-03 02:19:21,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:21,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364724312] [2022-11-03 02:19:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:21,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:21,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:21,403 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:21,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:19:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:22,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:22,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:22,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:22,571 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:22,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364724312] [2022-11-03 02:19:22,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364724312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:22,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:22,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057206913] [2022-11-03 02:19:22,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:22,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:22,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:22,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:22,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:22,574 INFO L87 Difference]: Start difference. First operand 345 states and 498 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:22,953 INFO L93 Difference]: Finished difference Result 1226 states and 1811 transitions. [2022-11-03 02:19:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:22,957 INFO L225 Difference]: With dead ends: 1226 [2022-11-03 02:19:22,957 INFO L226 Difference]: Without dead ends: 931 [2022-11-03 02:19:22,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:22,959 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1680 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:22,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 2535 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:22,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-11-03 02:19:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 347. [2022-11-03 02:19:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4450867052023122) internal successors, (500), 346 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 500 transitions. [2022-11-03 02:19:22,974 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 500 transitions. Word has length 298 [2022-11-03 02:19:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:22,974 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 500 transitions. [2022-11-03 02:19:22,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 500 transitions. [2022-11-03 02:19:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:22,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:22,977 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:23,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:23,203 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:23,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1037074749, now seen corresponding path program 1 times [2022-11-03 02:19:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:23,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435439681] [2022-11-03 02:19:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:23,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:23,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:23,208 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:23,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:19:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:24,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:24,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:24,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:24,291 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435439681] [2022-11-03 02:19:24,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435439681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:24,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:24,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194697945] [2022-11-03 02:19:24,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:24,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:24,298 INFO L87 Difference]: Start difference. First operand 347 states and 500 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:24,623 INFO L93 Difference]: Finished difference Result 1186 states and 1750 transitions. [2022-11-03 02:19:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:24,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:24,627 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:24,628 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:24,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:24,630 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1182 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:24,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 2653 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-11-03 02:19:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 351. [2022-11-03 02:19:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.4428571428571428) internal successors, (505), 350 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 02:19:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 505 transitions. [2022-11-03 02:19:24,643 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 505 transitions. Word has length 298 [2022-11-03 02:19:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:24,644 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 505 transitions. [2022-11-03 02:19:24,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 505 transitions. [2022-11-03 02:19:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:24,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:24,647 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:24,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:24,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:24,871 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1584302661, now seen corresponding path program 1 times [2022-11-03 02:19:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:24,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377596788] [2022-11-03 02:19:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:24,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:24,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:24,876 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:24,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:19:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:25,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:25,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:26,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:26,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:26,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377596788] [2022-11-03 02:19:26,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377596788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:26,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:26,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:26,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695262360] [2022-11-03 02:19:26,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:26,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:26,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:26,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:26,025 INFO L87 Difference]: Start difference. First operand 351 states and 505 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:26,379 INFO L93 Difference]: Finished difference Result 1186 states and 1749 transitions. [2022-11-03 02:19:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:26,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:26,384 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:26,384 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:26,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:26,386 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1176 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:26,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 2648 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 32 Unchecked, 0.3s Time] [2022-11-03 02:19:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 353. [2022-11-03 02:19:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.4403409090909092) internal successors, (507), 352 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 02:19:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 507 transitions. [2022-11-03 02:19:26,402 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 507 transitions. Word has length 298 [2022-11-03 02:19:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:26,403 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 507 transitions. [2022-11-03 02:19:26,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 507 transitions. [2022-11-03 02:19:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:26,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:26,405 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:26,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:26,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:26,618 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1184796231, now seen corresponding path program 1 times [2022-11-03 02:19:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:26,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433928804] [2022-11-03 02:19:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:26,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:26,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:26,623 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:26,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:19:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:27,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:27,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:27,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:27,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:27,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433928804] [2022-11-03 02:19:27,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433928804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:27,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:27,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:27,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168491277] [2022-11-03 02:19:27,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:27,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:27,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:27,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:27,734 INFO L87 Difference]: Start difference. First operand 353 states and 507 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:28,067 INFO L93 Difference]: Finished difference Result 1232 states and 1817 transitions. [2022-11-03 02:19:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:28,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:28,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:28,072 INFO L225 Difference]: With dead ends: 1232 [2022-11-03 02:19:28,072 INFO L226 Difference]: Without dead ends: 937 [2022-11-03 02:19:28,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:28,074 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1666 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:28,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 2528 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-03 02:19:28,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 355. [2022-11-03 02:19:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.4378531073446328) internal successors, (509), 354 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 02:19:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 509 transitions. [2022-11-03 02:19:28,089 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 509 transitions. Word has length 298 [2022-11-03 02:19:28,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:28,090 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 509 transitions. [2022-11-03 02:19:28,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 509 transitions. [2022-11-03 02:19:28,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:28,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:28,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:28,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:28,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:28,318 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:28,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1537452745, now seen corresponding path program 1 times [2022-11-03 02:19:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:28,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432210470] [2022-11-03 02:19:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:28,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:28,322 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:28,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:19:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:29,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:29,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:29,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:29,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:29,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432210470] [2022-11-03 02:19:29,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432210470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:29,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:29,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:29,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216248119] [2022-11-03 02:19:29,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:29,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:29,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:29,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:29,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:29,417 INFO L87 Difference]: Start difference. First operand 355 states and 509 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:29,734 INFO L93 Difference]: Finished difference Result 1186 states and 1747 transitions. [2022-11-03 02:19:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:29,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:29,740 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:29,740 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:29,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:29,742 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1164 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:29,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 2657 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-11-03 02:19:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:29,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 357. [2022-11-03 02:19:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.4353932584269662) internal successors, (511), 356 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 02:19:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 511 transitions. [2022-11-03 02:19:29,756 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 511 transitions. Word has length 298 [2022-11-03 02:19:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:29,756 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 511 transitions. [2022-11-03 02:19:29,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 511 transitions. [2022-11-03 02:19:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:29,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:29,759 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:29,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:29,974 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1461059637, now seen corresponding path program 1 times [2022-11-03 02:19:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:29,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021989755] [2022-11-03 02:19:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:29,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:29,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:29,978 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:29,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:19:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:30,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:30,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:31,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:31,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:31,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021989755] [2022-11-03 02:19:31,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021989755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:31,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:31,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981998855] [2022-11-03 02:19:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:31,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:31,090 INFO L87 Difference]: Start difference. First operand 357 states and 511 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:31,426 INFO L93 Difference]: Finished difference Result 1186 states and 1746 transitions. [2022-11-03 02:19:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:31,431 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:31,431 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:31,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:31,433 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1158 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:31,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2639 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2022-11-03 02:19:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 359. [2022-11-03 02:19:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4329608938547487) internal successors, (513), 358 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 513 transitions. [2022-11-03 02:19:31,455 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 513 transitions. Word has length 298 [2022-11-03 02:19:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:31,456 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 513 transitions. [2022-11-03 02:19:31,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 513 transitions. [2022-11-03 02:19:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:31,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:31,460 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:31,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:31,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:31,682 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1717939533, now seen corresponding path program 1 times [2022-11-03 02:19:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:31,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276366436] [2022-11-03 02:19:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:31,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:31,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:31,686 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:31,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:19:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:32,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:32,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:32,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:32,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:32,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276366436] [2022-11-03 02:19:32,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276366436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:32,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:32,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:32,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520426567] [2022-11-03 02:19:32,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:32,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:32,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:32,773 INFO L87 Difference]: Start difference. First operand 359 states and 513 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:33,102 INFO L93 Difference]: Finished difference Result 1232 states and 1814 transitions. [2022-11-03 02:19:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:33,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:33,107 INFO L225 Difference]: With dead ends: 1232 [2022-11-03 02:19:33,107 INFO L226 Difference]: Without dead ends: 937 [2022-11-03 02:19:33,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:33,108 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1645 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:33,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 2516 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-03 02:19:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 361. [2022-11-03 02:19:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.4305555555555556) internal successors, (515), 360 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 515 transitions. [2022-11-03 02:19:33,121 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 515 transitions. Word has length 298 [2022-11-03 02:19:33,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:33,122 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 515 transitions. [2022-11-03 02:19:33,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:33,123 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 515 transitions. [2022-11-03 02:19:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:33,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:33,125 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:33,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:33,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:33,339 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2056442703, now seen corresponding path program 1 times [2022-11-03 02:19:33,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:33,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858184773] [2022-11-03 02:19:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:33,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:33,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:33,341 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:33,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:19:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:34,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:34,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:34,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:34,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:34,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858184773] [2022-11-03 02:19:34,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858184773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:34,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:34,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701310496] [2022-11-03 02:19:34,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:34,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:34,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:34,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:34,393 INFO L87 Difference]: Start difference. First operand 361 states and 515 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:34,709 INFO L93 Difference]: Finished difference Result 1186 states and 1744 transitions. [2022-11-03 02:19:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:34,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:34,712 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:19:34,712 INFO L226 Difference]: Without dead ends: 891 [2022-11-03 02:19:34,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:34,714 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1146 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:34,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 2647 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2022-11-03 02:19:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-03 02:19:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 363. [2022-11-03 02:19:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.4281767955801106) internal successors, (517), 362 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 517 transitions. [2022-11-03 02:19:34,727 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 517 transitions. Word has length 298 [2022-11-03 02:19:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:34,727 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 517 transitions. [2022-11-03 02:19:34,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:34,734 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 517 transitions. [2022-11-03 02:19:34,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:34,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:34,736 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:34,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:34,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:34,959 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2088079825, now seen corresponding path program 1 times [2022-11-03 02:19:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:34,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673136361] [2022-11-03 02:19:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:34,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:34,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:34,963 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:34,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:19:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:35,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:35,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:36,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:36,017 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:36,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673136361] [2022-11-03 02:19:36,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673136361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:36,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:36,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:36,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979655122] [2022-11-03 02:19:36,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:36,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:36,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:36,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:36,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:36,019 INFO L87 Difference]: Start difference. First operand 363 states and 517 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:36,312 INFO L93 Difference]: Finished difference Result 1232 states and 1812 transitions. [2022-11-03 02:19:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:36,316 INFO L225 Difference]: With dead ends: 1232 [2022-11-03 02:19:36,316 INFO L226 Difference]: Without dead ends: 937 [2022-11-03 02:19:36,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:36,318 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1631 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:36,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 2508 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:36,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-03 02:19:36,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 365. [2022-11-03 02:19:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.4258241758241759) internal successors, (519), 364 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 519 transitions. [2022-11-03 02:19:36,330 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 519 transitions. Word has length 298 [2022-11-03 02:19:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:36,331 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 519 transitions. [2022-11-03 02:19:36,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 519 transitions. [2022-11-03 02:19:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:36,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:36,333 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:36,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:36,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:36,546 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash 899287251, now seen corresponding path program 1 times [2022-11-03 02:19:36,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:36,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265082626] [2022-11-03 02:19:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:36,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:36,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:36,549 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:36,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:19:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:37,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:19:37,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:37,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:37,551 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:37,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265082626] [2022-11-03 02:19:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265082626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:37,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:37,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418937242] [2022-11-03 02:19:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:37,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:37,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:37,554 INFO L87 Difference]: Start difference. First operand 365 states and 519 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:37,853 INFO L93 Difference]: Finished difference Result 1204 states and 1769 transitions. [2022-11-03 02:19:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:37,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:37,857 INFO L225 Difference]: With dead ends: 1204 [2022-11-03 02:19:37,858 INFO L226 Difference]: Without dead ends: 909 [2022-11-03 02:19:37,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:37,859 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 1173 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:37,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 2664 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-03 02:19:37,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-11-03 02:19:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 373. [2022-11-03 02:19:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.424731182795699) internal successors, (530), 372 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 530 transitions. [2022-11-03 02:19:37,871 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 530 transitions. Word has length 298 [2022-11-03 02:19:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:37,871 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 530 transitions. [2022-11-03 02:19:37,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 530 transitions. [2022-11-03 02:19:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:37,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:37,874 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:37,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:38,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:38,099 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1675534805, now seen corresponding path program 1 times [2022-11-03 02:19:38,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:38,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34597100] [2022-11-03 02:19:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:38,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:38,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:38,102 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:38,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:19:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:38,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:19:38,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:39,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:39,151 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:39,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34597100] [2022-11-03 02:19:39,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34597100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:39,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:39,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:39,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772522651] [2022-11-03 02:19:39,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:39,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:39,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:39,153 INFO L87 Difference]: Start difference. First operand 373 states and 530 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:39,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:39,440 INFO L93 Difference]: Finished difference Result 1204 states and 1768 transitions. [2022-11-03 02:19:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:39,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:39,442 INFO L225 Difference]: With dead ends: 1204 [2022-11-03 02:19:39,442 INFO L226 Difference]: Without dead ends: 909 [2022-11-03 02:19:39,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:39,443 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1142 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:39,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 2694 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-03 02:19:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-11-03 02:19:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 385. [2022-11-03 02:19:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.4244791666666667) internal successors, (547), 384 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 547 transitions. [2022-11-03 02:19:39,454 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 547 transitions. Word has length 298 [2022-11-03 02:19:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:39,454 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 547 transitions. [2022-11-03 02:19:39,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 547 transitions. [2022-11-03 02:19:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:39,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:39,456 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:39,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:39,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:39,670 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash 361704919, now seen corresponding path program 1 times [2022-11-03 02:19:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:39,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574976305] [2022-11-03 02:19:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:39,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:39,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:39,673 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:39,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:19:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:40,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:40,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:40,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:40,650 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:40,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574976305] [2022-11-03 02:19:40,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574976305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:40,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:40,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:40,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889749691] [2022-11-03 02:19:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:40,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:40,653 INFO L87 Difference]: Start difference. First operand 385 states and 547 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:40,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:40,949 INFO L93 Difference]: Finished difference Result 1232 states and 1809 transitions. [2022-11-03 02:19:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:40,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:40,952 INFO L225 Difference]: With dead ends: 1232 [2022-11-03 02:19:40,953 INFO L226 Difference]: Without dead ends: 937 [2022-11-03 02:19:40,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:40,954 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1565 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:40,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 2469 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:40,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-03 02:19:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 389. [2022-11-03 02:19:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.422680412371134) internal successors, (552), 388 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 552 transitions. [2022-11-03 02:19:40,966 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 552 transitions. Word has length 298 [2022-11-03 02:19:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:40,967 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 552 transitions. [2022-11-03 02:19:40,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 552 transitions. [2022-11-03 02:19:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:40,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:40,969 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:40,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-03 02:19:41,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:41,193 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:41,194 INFO L85 PathProgramCache]: Analyzing trace with hash -774239527, now seen corresponding path program 1 times [2022-11-03 02:19:41,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:41,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033535994] [2022-11-03 02:19:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:41,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:41,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:41,198 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:41,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:19:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:41,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:19:42,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:42,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:42,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:42,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033535994] [2022-11-03 02:19:42,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033535994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:42,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:42,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120410872] [2022-11-03 02:19:42,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:42,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:42,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:42,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:42,440 INFO L87 Difference]: Start difference. First operand 389 states and 552 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:42,740 INFO L93 Difference]: Finished difference Result 1226 states and 1799 transitions. [2022-11-03 02:19:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:42,744 INFO L225 Difference]: With dead ends: 1226 [2022-11-03 02:19:42,744 INFO L226 Difference]: Without dead ends: 931 [2022-11-03 02:19:42,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:42,746 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 1546 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:42,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2454 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-11-03 02:19:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 391. [2022-11-03 02:19:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.4205128205128206) internal successors, (554), 390 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 554 transitions. [2022-11-03 02:19:42,757 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 554 transitions. Word has length 298 [2022-11-03 02:19:42,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:42,758 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 554 transitions. [2022-11-03 02:19:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 554 transitions. [2022-11-03 02:19:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:42,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:42,761 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:42,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 02:19:42,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:42,985 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2049163173, now seen corresponding path program 1 times [2022-11-03 02:19:42,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:42,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144174553] [2022-11-03 02:19:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:42,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:42,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:42,988 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:42,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:19:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:43,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:43,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:44,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:44,065 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:44,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144174553] [2022-11-03 02:19:44,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144174553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:44,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:44,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220363435] [2022-11-03 02:19:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:44,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:44,067 INFO L87 Difference]: Start difference. First operand 391 states and 554 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:44,300 INFO L93 Difference]: Finished difference Result 1179 states and 1730 transitions. [2022-11-03 02:19:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:19:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:44,303 INFO L225 Difference]: With dead ends: 1179 [2022-11-03 02:19:44,303 INFO L226 Difference]: Without dead ends: 884 [2022-11-03 02:19:44,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:44,305 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1047 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:44,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1658 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-03 02:19:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 393. [2022-11-03 02:19:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.4183673469387754) internal successors, (556), 392 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 556 transitions. [2022-11-03 02:19:44,316 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 556 transitions. Word has length 298 [2022-11-03 02:19:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:44,317 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 556 transitions. [2022-11-03 02:19:44,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 556 transitions. [2022-11-03 02:19:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:44,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:44,319 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:44,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-03 02:19:44,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:44,530 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:44,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash 277999197, now seen corresponding path program 1 times [2022-11-03 02:19:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:44,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350749387] [2022-11-03 02:19:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:44,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:44,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:44,533 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:44,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:19:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:45,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:45,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:45,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:45,567 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:45,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350749387] [2022-11-03 02:19:45,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350749387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:45,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:45,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600179497] [2022-11-03 02:19:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:45,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:45,569 INFO L87 Difference]: Start difference. First operand 393 states and 556 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:45,666 INFO L93 Difference]: Finished difference Result 1179 states and 1729 transitions. [2022-11-03 02:19:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:19:45,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:45,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:45,668 INFO L225 Difference]: With dead ends: 1179 [2022-11-03 02:19:45,669 INFO L226 Difference]: Without dead ends: 884 [2022-11-03 02:19:45,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:45,670 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1041 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:45,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1696 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-03 02:19:45,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 395. [2022-11-03 02:19:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.416243654822335) internal successors, (558), 394 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 558 transitions. [2022-11-03 02:19:45,680 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 558 transitions. Word has length 298 [2022-11-03 02:19:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:45,681 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 558 transitions. [2022-11-03 02:19:45,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 558 transitions. [2022-11-03 02:19:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:45,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:45,683 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:45,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:45,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:45,906 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash 561984735, now seen corresponding path program 1 times [2022-11-03 02:19:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:45,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39103542] [2022-11-03 02:19:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:45,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:45,910 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:45,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:19:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:46,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:19:46,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:46,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:46,829 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:46,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39103542] [2022-11-03 02:19:46,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39103542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:46,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:46,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:19:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504740987] [2022-11-03 02:19:46,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:46,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:19:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:19:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:19:46,832 INFO L87 Difference]: Start difference. First operand 395 states and 558 transitions. Second operand has 7 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:47,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:47,191 INFO L93 Difference]: Finished difference Result 1069 states and 1557 transitions. [2022-11-03 02:19:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:19:47,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:47,194 INFO L225 Difference]: With dead ends: 1069 [2022-11-03 02:19:47,194 INFO L226 Difference]: Without dead ends: 774 [2022-11-03 02:19:47,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:19:47,195 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 2609 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:47,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 2323 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-11-03 02:19:47,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 451. [2022-11-03 02:19:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.4111111111111112) internal successors, (635), 450 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 635 transitions. [2022-11-03 02:19:47,211 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 635 transitions. Word has length 298 [2022-11-03 02:19:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:47,211 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 635 transitions. [2022-11-03 02:19:47,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 635 transitions. [2022-11-03 02:19:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:47,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:47,214 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:47,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-03 02:19:47,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:47,422 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:47,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:47,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1451860643, now seen corresponding path program 1 times [2022-11-03 02:19:47,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:47,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139032581] [2022-11-03 02:19:47,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:47,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:47,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:47,425 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:47,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:19:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:48,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:19:48,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:48,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:48,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:48,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139032581] [2022-11-03 02:19:48,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139032581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:48,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:48,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:48,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549236576] [2022-11-03 02:19:48,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:48,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:48,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:48,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:48,583 INFO L87 Difference]: Start difference. First operand 451 states and 635 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:48,896 INFO L93 Difference]: Finished difference Result 1324 states and 1933 transitions. [2022-11-03 02:19:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:48,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:48,899 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:19:48,900 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:19:48,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:48,901 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1092 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:48,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 2741 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 38 Unchecked, 0.3s Time] [2022-11-03 02:19:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:19:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 463. [2022-11-03 02:19:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.4090909090909092) internal successors, (651), 462 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 651 transitions. [2022-11-03 02:19:48,913 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 651 transitions. Word has length 298 [2022-11-03 02:19:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:48,913 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 651 transitions. [2022-11-03 02:19:48,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 651 transitions. [2022-11-03 02:19:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:48,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:48,915 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:48,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:49,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:49,136 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:49,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1057703391, now seen corresponding path program 1 times [2022-11-03 02:19:49,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:49,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163437904] [2022-11-03 02:19:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:49,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:49,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:49,139 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:49,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:19:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:49,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:19:49,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:50,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:50,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:50,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163437904] [2022-11-03 02:19:50,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163437904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:50,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:50,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:19:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465796331] [2022-11-03 02:19:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:50,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:19:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:19:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:19:50,215 INFO L87 Difference]: Start difference. First operand 463 states and 651 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:50,545 INFO L93 Difference]: Finished difference Result 1324 states and 1932 transitions. [2022-11-03 02:19:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:19:50,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:50,548 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:19:50,548 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:19:50,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:50,549 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1056 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:50,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 2753 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-03 02:19:50,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:19:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 477. [2022-11-03 02:19:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.4096638655462186) internal successors, (671), 476 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 671 transitions. [2022-11-03 02:19:50,560 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 671 transitions. Word has length 298 [2022-11-03 02:19:50,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:50,561 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 671 transitions. [2022-11-03 02:19:50,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 671 transitions. [2022-11-03 02:19:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:50,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:50,563 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:50,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:50,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:50,786 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1638114847, now seen corresponding path program 1 times [2022-11-03 02:19:50,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:50,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390073695] [2022-11-03 02:19:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:50,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:50,789 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:50,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:19:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:51,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:51,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:51,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:51,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:51,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390073695] [2022-11-03 02:19:51,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390073695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:51,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:51,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762012486] [2022-11-03 02:19:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:51,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:51,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:51,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:51,911 INFO L87 Difference]: Start difference. First operand 477 states and 671 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:52,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:52,184 INFO L93 Difference]: Finished difference Result 1423 states and 2079 transitions. [2022-11-03 02:19:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:52,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:52,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:52,187 INFO L225 Difference]: With dead ends: 1423 [2022-11-03 02:19:52,187 INFO L226 Difference]: Without dead ends: 1098 [2022-11-03 02:19:52,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:52,189 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1555 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:52,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2481 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:52,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-03 02:19:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 481. [2022-11-03 02:19:52,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4083333333333334) internal successors, (676), 480 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 02:19:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 676 transitions. [2022-11-03 02:19:52,200 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 676 transitions. Word has length 298 [2022-11-03 02:19:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:52,200 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 676 transitions. [2022-11-03 02:19:52,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 676 transitions. [2022-11-03 02:19:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:52,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:52,203 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:52,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:52,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:52,418 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1110720797, now seen corresponding path program 1 times [2022-11-03 02:19:52,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:52,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533376775] [2022-11-03 02:19:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:52,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:52,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:52,421 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:52,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:19:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:53,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:19:53,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:53,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:53,930 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:53,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533376775] [2022-11-03 02:19:53,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533376775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:53,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:53,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342121918] [2022-11-03 02:19:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:53,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:53,933 INFO L87 Difference]: Start difference. First operand 481 states and 676 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:54,262 INFO L93 Difference]: Finished difference Result 1419 states and 2072 transitions. [2022-11-03 02:19:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:54,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:54,265 INFO L225 Difference]: With dead ends: 1419 [2022-11-03 02:19:54,265 INFO L226 Difference]: Without dead ends: 1094 [2022-11-03 02:19:54,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:54,267 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1544 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:54,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 2472 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2022-11-03 02:19:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 483. [2022-11-03 02:19:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4066390041493777) internal successors, (678), 482 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 02:19:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 678 transitions. [2022-11-03 02:19:54,280 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 678 transitions. Word has length 298 [2022-11-03 02:19:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:54,281 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 678 transitions. [2022-11-03 02:19:54,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 678 transitions. [2022-11-03 02:19:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:54,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:54,283 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:54,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-03 02:19:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:54,502 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash -462128027, now seen corresponding path program 1 times [2022-11-03 02:19:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:54,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495467929] [2022-11-03 02:19:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:54,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:54,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:54,506 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:54,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:19:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:55,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:19:55,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:55,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:55,395 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:55,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495467929] [2022-11-03 02:19:55,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495467929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:55,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:55,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332303639] [2022-11-03 02:19:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:55,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:55,397 INFO L87 Difference]: Start difference. First operand 483 states and 678 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:55,565 INFO L93 Difference]: Finished difference Result 1346 states and 1962 transitions. [2022-11-03 02:19:55,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:55,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:55,567 INFO L225 Difference]: With dead ends: 1346 [2022-11-03 02:19:55,567 INFO L226 Difference]: Without dead ends: 1021 [2022-11-03 02:19:55,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:55,568 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1447 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:55,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 2437 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:55,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-11-03 02:19:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 485. [2022-11-03 02:19:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.4049586776859504) internal successors, (680), 484 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 680 transitions. [2022-11-03 02:19:55,578 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 680 transitions. Word has length 298 [2022-11-03 02:19:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:55,579 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 680 transitions. [2022-11-03 02:19:55,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 680 transitions. [2022-11-03 02:19:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:55,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:55,581 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:55,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-03 02:19:55,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:55,804 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -372067737, now seen corresponding path program 1 times [2022-11-03 02:19:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:55,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224706265] [2022-11-03 02:19:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:55,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:55,807 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:55,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:19:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:56,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:56,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:56,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:56,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:56,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224706265] [2022-11-03 02:19:56,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224706265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:56,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:56,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:56,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711439841] [2022-11-03 02:19:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:56,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:56,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:56,964 INFO L87 Difference]: Start difference. First operand 485 states and 680 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:57,244 INFO L93 Difference]: Finished difference Result 1458 states and 2128 transitions. [2022-11-03 02:19:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:57,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:57,246 INFO L225 Difference]: With dead ends: 1458 [2022-11-03 02:19:57,246 INFO L226 Difference]: Without dead ends: 1133 [2022-11-03 02:19:57,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:57,247 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1584 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:57,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 2513 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:57,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-11-03 02:19:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 487. [2022-11-03 02:19:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.4032921810699588) internal successors, (682), 486 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 682 transitions. [2022-11-03 02:19:57,259 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 682 transitions. Word has length 298 [2022-11-03 02:19:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:57,259 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 682 transitions. [2022-11-03 02:19:57,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 682 transitions. [2022-11-03 02:19:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:57,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:57,262 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:57,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:57,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:57,486 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1779793687, now seen corresponding path program 1 times [2022-11-03 02:19:57,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:57,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624885387] [2022-11-03 02:19:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:57,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:57,488 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:57,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:19:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:58,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:58,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:19:58,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:58,665 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:58,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624885387] [2022-11-03 02:19:58,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624885387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:58,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:58,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:19:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888797880] [2022-11-03 02:19:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:58,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:19:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:19:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:58,668 INFO L87 Difference]: Start difference. First operand 487 states and 682 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:58,937 INFO L93 Difference]: Finished difference Result 1458 states and 2127 transitions. [2022-11-03 02:19:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:19:58,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:19:58,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:58,942 INFO L225 Difference]: With dead ends: 1458 [2022-11-03 02:19:58,942 INFO L226 Difference]: Without dead ends: 1133 [2022-11-03 02:19:58,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:19:58,943 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1577 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:58,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 2509 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-11-03 02:19:58,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 489. [2022-11-03 02:19:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.401639344262295) internal successors, (684), 488 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 684 transitions. [2022-11-03 02:19:58,954 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 684 transitions. Word has length 298 [2022-11-03 02:19:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:58,955 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 684 transitions. [2022-11-03 02:19:58,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:19:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 684 transitions. [2022-11-03 02:19:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:19:58,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:58,957 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:58,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 02:19:59,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:59,162 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash 591923179, now seen corresponding path program 1 times [2022-11-03 02:19:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:59,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141441063] [2022-11-03 02:19:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:59,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:59,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:59,166 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:59,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 02:19:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:59,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:19:59,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:00,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:00,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:00,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141441063] [2022-11-03 02:20:00,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141441063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:00,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:00,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969738944] [2022-11-03 02:20:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:00,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:00,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:00,172 INFO L87 Difference]: Start difference. First operand 489 states and 684 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:00,457 INFO L93 Difference]: Finished difference Result 1306 states and 1899 transitions. [2022-11-03 02:20:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:00,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:00,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:00,459 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:00,460 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:00,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:00,461 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 956 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:00,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 2825 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-03 02:20:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 493. [2022-11-03 02:20:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.4004065040650406) internal successors, (689), 492 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 689 transitions. [2022-11-03 02:20:00,470 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 689 transitions. Word has length 298 [2022-11-03 02:20:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:00,470 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 689 transitions. [2022-11-03 02:20:00,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 689 transitions. [2022-11-03 02:20:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:00,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:00,473 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:00,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:00,690 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1995792365, now seen corresponding path program 1 times [2022-11-03 02:20:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:00,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963678998] [2022-11-03 02:20:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:00,694 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:00,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:20:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:01,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:01,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:01,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:01,675 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:01,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963678998] [2022-11-03 02:20:01,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963678998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:01,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:01,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583560102] [2022-11-03 02:20:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:01,677 INFO L87 Difference]: Start difference. First operand 493 states and 689 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:01,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:01,968 INFO L93 Difference]: Finished difference Result 1306 states and 1898 transitions. [2022-11-03 02:20:01,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:01,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:01,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:01,970 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:01,970 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:01,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:01,974 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 950 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:01,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 2792 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-03 02:20:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 495. [2022-11-03 02:20:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.3987854251012146) internal successors, (691), 494 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 691 transitions. [2022-11-03 02:20:01,986 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 691 transitions. Word has length 298 [2022-11-03 02:20:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:01,986 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 691 transitions. [2022-11-03 02:20:01,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 691 transitions. [2022-11-03 02:20:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:01,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:01,991 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:02,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:02,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:02,215 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1631793041, now seen corresponding path program 1 times [2022-11-03 02:20:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:02,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057401083] [2022-11-03 02:20:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:02,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:02,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:02,218 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:02,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 02:20:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:03,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:03,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:03,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:03,613 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:03,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057401083] [2022-11-03 02:20:03,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057401083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:03,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:03,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:03,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208664179] [2022-11-03 02:20:03,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:03,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:03,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:03,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:03,615 INFO L87 Difference]: Start difference. First operand 495 states and 691 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:03,926 INFO L93 Difference]: Finished difference Result 1464 states and 2133 transitions. [2022-11-03 02:20:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:03,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:03,928 INFO L225 Difference]: With dead ends: 1464 [2022-11-03 02:20:03,928 INFO L226 Difference]: Without dead ends: 1139 [2022-11-03 02:20:03,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:03,930 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1563 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:03,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 2502 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-03 02:20:03,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 497. [2022-11-03 02:20:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3971774193548387) internal successors, (693), 496 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 693 transitions. [2022-11-03 02:20:03,939 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 693 transitions. Word has length 298 [2022-11-03 02:20:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:03,940 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 693 transitions. [2022-11-03 02:20:03,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 693 transitions. [2022-11-03 02:20:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:03,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:03,943 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:03,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:04,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:04,167 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:04,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:04,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1286964879, now seen corresponding path program 1 times [2022-11-03 02:20:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:04,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271974617] [2022-11-03 02:20:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:04,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:04,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:04,170 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:04,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 02:20:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:04,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:04,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:05,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:05,365 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:05,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271974617] [2022-11-03 02:20:05,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271974617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:05,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:05,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985349485] [2022-11-03 02:20:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:05,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:05,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:05,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:05,369 INFO L87 Difference]: Start difference. First operand 497 states and 693 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:05,700 INFO L93 Difference]: Finished difference Result 1306 states and 1896 transitions. [2022-11-03 02:20:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:05,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:05,702 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:05,702 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:05,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:05,703 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 938 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:05,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2826 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 21 Unchecked, 0.3s Time] [2022-11-03 02:20:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 499. [2022-11-03 02:20:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.395582329317269) internal successors, (695), 498 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 695 transitions. [2022-11-03 02:20:05,717 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 695 transitions. Word has length 298 [2022-11-03 02:20:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:05,717 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 695 transitions. [2022-11-03 02:20:05,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 695 transitions. [2022-11-03 02:20:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:05,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:05,720 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:05,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:05,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:05,940 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1238530803, now seen corresponding path program 1 times [2022-11-03 02:20:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:05,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937364947] [2022-11-03 02:20:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:05,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:05,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:05,943 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:05,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:20:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:06,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:06,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:07,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:07,143 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:07,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937364947] [2022-11-03 02:20:07,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937364947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:07,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:07,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175977697] [2022-11-03 02:20:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:07,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:07,146 INFO L87 Difference]: Start difference. First operand 499 states and 695 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:07,504 INFO L93 Difference]: Finished difference Result 1306 states and 1895 transitions. [2022-11-03 02:20:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:07,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:07,506 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:07,506 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:07,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:07,507 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 932 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:07,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 2819 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2022-11-03 02:20:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 501. [2022-11-03 02:20:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.394) internal successors, (697), 500 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 697 transitions. [2022-11-03 02:20:07,516 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 697 transitions. Word has length 298 [2022-11-03 02:20:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:07,517 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 697 transitions. [2022-11-03 02:20:07,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 697 transitions. [2022-11-03 02:20:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:07,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:07,519 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:07,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-03 02:20:07,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:07,733 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash -166660875, now seen corresponding path program 1 times [2022-11-03 02:20:07,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:07,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35107394] [2022-11-03 02:20:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:07,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:07,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:07,736 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:07,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 02:20:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:08,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:08,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:09,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:09,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:09,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35107394] [2022-11-03 02:20:09,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35107394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:09,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:09,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:09,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102117508] [2022-11-03 02:20:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:09,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:09,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:09,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:09,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:09,233 INFO L87 Difference]: Start difference. First operand 501 states and 697 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:09,575 INFO L93 Difference]: Finished difference Result 1464 states and 2130 transitions. [2022-11-03 02:20:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:09,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:09,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:09,578 INFO L225 Difference]: With dead ends: 1464 [2022-11-03 02:20:09,578 INFO L226 Difference]: Without dead ends: 1139 [2022-11-03 02:20:09,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:09,580 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1542 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:09,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 2490 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-03 02:20:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 503. [2022-11-03 02:20:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.3924302788844622) internal successors, (699), 502 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 699 transitions. [2022-11-03 02:20:09,594 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 699 transitions. Word has length 298 [2022-11-03 02:20:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:09,594 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 699 transitions. [2022-11-03 02:20:09,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:09,595 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 699 transitions. [2022-11-03 02:20:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:09,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:09,597 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:09,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-03 02:20:09,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:09,823 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1279919991, now seen corresponding path program 1 times [2022-11-03 02:20:09,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:09,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918029225] [2022-11-03 02:20:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:09,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:09,828 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:09,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 02:20:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:10,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:10,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:11,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:11,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:11,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918029225] [2022-11-03 02:20:11,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918029225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:11,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:11,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:11,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905033018] [2022-11-03 02:20:11,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:11,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:11,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:11,218 INFO L87 Difference]: Start difference. First operand 503 states and 699 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:11,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:11,554 INFO L93 Difference]: Finished difference Result 1464 states and 2129 transitions. [2022-11-03 02:20:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:11,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:11,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:11,556 INFO L225 Difference]: With dead ends: 1464 [2022-11-03 02:20:11,556 INFO L226 Difference]: Without dead ends: 1139 [2022-11-03 02:20:11,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:11,557 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 1530 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:11,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 2483 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-03 02:20:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 507. [2022-11-03 02:20:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.391304347826087) internal successors, (704), 506 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 704 transitions. [2022-11-03 02:20:11,569 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 704 transitions. Word has length 298 [2022-11-03 02:20:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:11,570 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 704 transitions. [2022-11-03 02:20:11,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:11,570 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 704 transitions. [2022-11-03 02:20:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:11,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:11,573 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:11,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:11,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:11,786 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1083921671, now seen corresponding path program 1 times [2022-11-03 02:20:11,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:11,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352850051] [2022-11-03 02:20:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:11,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:11,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:11,791 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:11,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 02:20:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:12,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:20:12,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:13,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:13,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:13,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352850051] [2022-11-03 02:20:13,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352850051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:13,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:13,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:13,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177808010] [2022-11-03 02:20:13,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:13,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:13,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:13,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:13,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:13,103 INFO L87 Difference]: Start difference. First operand 507 states and 704 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:13,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:13,451 INFO L93 Difference]: Finished difference Result 1324 states and 1919 transitions. [2022-11-03 02:20:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:13,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:13,454 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:20:13,454 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:20:13,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:13,455 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 963 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:13,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 2828 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 38 Unchecked, 0.3s Time] [2022-11-03 02:20:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:20:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 509. [2022-11-03 02:20:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.389763779527559) internal successors, (706), 508 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 706 transitions. [2022-11-03 02:20:13,467 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 706 transitions. Word has length 298 [2022-11-03 02:20:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:13,468 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 706 transitions. [2022-11-03 02:20:13,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 706 transitions. [2022-11-03 02:20:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:13,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:13,471 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:13,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:13,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:13,694 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash 813057787, now seen corresponding path program 1 times [2022-11-03 02:20:13,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:13,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554183552] [2022-11-03 02:20:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:13,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:13,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:13,697 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:13,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 02:20:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:14,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:14,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:15,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:15,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:15,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554183552] [2022-11-03 02:20:15,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554183552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:15,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:15,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:15,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337772487] [2022-11-03 02:20:15,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:15,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:15,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:15,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:15,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:15,126 INFO L87 Difference]: Start difference. First operand 509 states and 706 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:15,442 INFO L93 Difference]: Finished difference Result 1464 states and 2127 transitions. [2022-11-03 02:20:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:15,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:15,446 INFO L225 Difference]: With dead ends: 1464 [2022-11-03 02:20:15,446 INFO L226 Difference]: Without dead ends: 1139 [2022-11-03 02:20:15,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:15,448 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1511 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:15,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 2472 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:15,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-03 02:20:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 513. [2022-11-03 02:20:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.388671875) internal successors, (711), 512 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 711 transitions. [2022-11-03 02:20:15,461 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 711 transitions. Word has length 298 [2022-11-03 02:20:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:15,462 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 711 transitions. [2022-11-03 02:20:15,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 711 transitions. [2022-11-03 02:20:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:15,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:15,464 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:15,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:15,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:15,679 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash 657077245, now seen corresponding path program 1 times [2022-11-03 02:20:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:15,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405759668] [2022-11-03 02:20:15,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:15,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:15,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:15,684 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:15,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 02:20:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:16,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:20:16,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:17,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:17,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:17,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405759668] [2022-11-03 02:20:17,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405759668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:17,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:17,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:17,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545210408] [2022-11-03 02:20:17,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:17,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:17,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:17,816 INFO L87 Difference]: Start difference. First operand 513 states and 711 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:18,158 INFO L93 Difference]: Finished difference Result 1458 states and 2117 transitions. [2022-11-03 02:20:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:18,161 INFO L225 Difference]: With dead ends: 1458 [2022-11-03 02:20:18,161 INFO L226 Difference]: Without dead ends: 1133 [2022-11-03 02:20:18,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:18,162 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 1492 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:18,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 2457 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-11-03 02:20:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 515. [2022-11-03 02:20:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.38715953307393) internal successors, (713), 514 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 713 transitions. [2022-11-03 02:20:18,175 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 713 transitions. Word has length 298 [2022-11-03 02:20:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:18,176 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 713 transitions. [2022-11-03 02:20:18,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 713 transitions. [2022-11-03 02:20:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:18,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:18,179 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:18,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-03 02:20:18,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:18,398 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1130792577, now seen corresponding path program 1 times [2022-11-03 02:20:18,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:18,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943414173] [2022-11-03 02:20:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:18,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:18,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:18,403 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:18,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 02:20:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:19,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:19,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:19,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:19,921 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:19,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943414173] [2022-11-03 02:20:19,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943414173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:19,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:19,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:20:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051849538] [2022-11-03 02:20:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:19,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:20:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:20:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:20:19,923 INFO L87 Difference]: Start difference. First operand 515 states and 713 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:20,206 INFO L93 Difference]: Finished difference Result 1299 states and 1881 transitions. [2022-11-03 02:20:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:20:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:20,209 INFO L225 Difference]: With dead ends: 1299 [2022-11-03 02:20:20,209 INFO L226 Difference]: Without dead ends: 974 [2022-11-03 02:20:20,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:20,211 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 868 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:20,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1639 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-03 02:20:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 517. [2022-11-03 02:20:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.3856589147286822) internal successors, (715), 516 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 715 transitions. [2022-11-03 02:20:20,223 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 715 transitions. Word has length 298 [2022-11-03 02:20:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:20,224 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 715 transitions. [2022-11-03 02:20:20,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 715 transitions. [2022-11-03 02:20:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:20,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:20,227 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:20,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:20,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:20,445 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1061144703, now seen corresponding path program 1 times [2022-11-03 02:20:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:20,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469325559] [2022-11-03 02:20:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:20,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:20,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:20,450 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:20,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 02:20:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:21,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:20:21,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:21,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:21,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:21,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469325559] [2022-11-03 02:20:21,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469325559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:21,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:21,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:21,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591612398] [2022-11-03 02:20:21,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:21,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:21,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:21,607 INFO L87 Difference]: Start difference. First operand 517 states and 715 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:21,803 INFO L93 Difference]: Finished difference Result 1464 states and 2124 transitions. [2022-11-03 02:20:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:21,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:21,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:21,807 INFO L225 Difference]: With dead ends: 1464 [2022-11-03 02:20:21,807 INFO L226 Difference]: Without dead ends: 1139 [2022-11-03 02:20:21,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:21,809 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1490 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:21,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 2509 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-03 02:20:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 519. [2022-11-03 02:20:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.3841698841698842) internal successors, (717), 518 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 717 transitions. [2022-11-03 02:20:21,821 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 717 transitions. Word has length 298 [2022-11-03 02:20:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:21,822 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 717 transitions. [2022-11-03 02:20:21,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 717 transitions. [2022-11-03 02:20:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:21,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:21,825 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:21,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-03 02:20:22,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:22,039 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:22,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 337808899, now seen corresponding path program 1 times [2022-11-03 02:20:22,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:22,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195509354] [2022-11-03 02:20:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:22,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:22,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:22,043 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:22,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 02:20:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:22,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:22,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:23,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:23,363 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:23,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195509354] [2022-11-03 02:20:23,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195509354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:23,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:23,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:23,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378706788] [2022-11-03 02:20:23,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:23,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:23,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:23,365 INFO L87 Difference]: Start difference. First operand 519 states and 717 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:23,691 INFO L93 Difference]: Finished difference Result 1306 states and 1887 transitions. [2022-11-03 02:20:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:23,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:23,693 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:23,693 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:23,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:23,695 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 874 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:23,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2867 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 24 Unchecked, 0.3s Time] [2022-11-03 02:20:23,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 521. [2022-11-03 02:20:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 1.3826923076923077) internal successors, (719), 520 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 719 transitions. [2022-11-03 02:20:23,704 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 719 transitions. Word has length 298 [2022-11-03 02:20:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:23,705 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 719 transitions. [2022-11-03 02:20:23,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:23,705 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 719 transitions. [2022-11-03 02:20:23,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:23,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:23,707 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:23,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:23,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:23,936 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 701275397, now seen corresponding path program 1 times [2022-11-03 02:20:23,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:23,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220889949] [2022-11-03 02:20:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:23,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:23,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:23,939 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:23,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 02:20:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:24,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:25,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:25,461 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:25,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220889949] [2022-11-03 02:20:25,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220889949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:25,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:25,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:25,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906703203] [2022-11-03 02:20:25,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:25,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:25,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:25,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:25,463 INFO L87 Difference]: Start difference. First operand 521 states and 719 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:25,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:25,792 INFO L93 Difference]: Finished difference Result 1492 states and 2164 transitions. [2022-11-03 02:20:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:25,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:25,794 INFO L225 Difference]: With dead ends: 1492 [2022-11-03 02:20:25,794 INFO L226 Difference]: Without dead ends: 1167 [2022-11-03 02:20:25,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:25,796 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1524 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:25,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 2487 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-11-03 02:20:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 525. [2022-11-03 02:20:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.381679389312977) internal successors, (724), 524 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 724 transitions. [2022-11-03 02:20:25,804 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 724 transitions. Word has length 298 [2022-11-03 02:20:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:25,804 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 724 transitions. [2022-11-03 02:20:25,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 724 transitions. [2022-11-03 02:20:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:25,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:25,806 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:25,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:26,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:26,006 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash -246776569, now seen corresponding path program 1 times [2022-11-03 02:20:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:26,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127793776] [2022-11-03 02:20:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:26,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:26,010 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:26,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 02:20:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:26,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:20:26,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:27,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:27,173 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:27,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127793776] [2022-11-03 02:20:27,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127793776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:27,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:27,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:27,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964976266] [2022-11-03 02:20:27,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:27,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:27,175 INFO L87 Difference]: Start difference. First operand 525 states and 724 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:27,397 INFO L93 Difference]: Finished difference Result 1306 states and 1885 transitions. [2022-11-03 02:20:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:27,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:27,399 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:27,399 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:27,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:27,401 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1236 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:27,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 2297 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:20:27,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 527. [2022-11-03 02:20:27,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3802281368821292) internal successors, (726), 526 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 726 transitions. [2022-11-03 02:20:27,412 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 726 transitions. Word has length 298 [2022-11-03 02:20:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:27,413 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 726 transitions. [2022-11-03 02:20:27,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 726 transitions. [2022-11-03 02:20:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:27,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:27,416 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:27,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-03 02:20:27,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:27,644 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash -681282167, now seen corresponding path program 1 times [2022-11-03 02:20:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:27,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772367740] [2022-11-03 02:20:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:27,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:27,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:27,648 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:27,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 02:20:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:28,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:28,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:28,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:28,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:28,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772367740] [2022-11-03 02:20:28,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772367740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:28,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:28,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:28,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277635155] [2022-11-03 02:20:28,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:28,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:28,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:28,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:28,982 INFO L87 Difference]: Start difference. First operand 527 states and 726 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:29,328 INFO L93 Difference]: Finished difference Result 1306 states and 1884 transitions. [2022-11-03 02:20:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:29,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:29,330 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:29,330 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:29,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:29,331 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 851 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:29,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2877 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 20 Unchecked, 0.3s Time] [2022-11-03 02:20:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:29,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 529. [2022-11-03 02:20:29,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.378787878787879) internal successors, (728), 528 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 728 transitions. [2022-11-03 02:20:29,355 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 728 transitions. Word has length 298 [2022-11-03 02:20:29,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:29,355 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 728 transitions. [2022-11-03 02:20:29,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 728 transitions. [2022-11-03 02:20:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:29,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:29,357 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:29,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-03 02:20:29,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:29,558 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:29,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1387878773, now seen corresponding path program 1 times [2022-11-03 02:20:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:29,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782694920] [2022-11-03 02:20:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:29,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:29,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:29,561 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:29,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 02:20:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:30,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:30,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:30,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:30,654 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:30,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782694920] [2022-11-03 02:20:30,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782694920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:30,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:30,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280082424] [2022-11-03 02:20:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:30,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:30,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:30,656 INFO L87 Difference]: Start difference. First operand 529 states and 728 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:30,967 INFO L93 Difference]: Finished difference Result 1306 states and 1883 transitions. [2022-11-03 02:20:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:30,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:30,969 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:30,969 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:30,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:30,970 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 845 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:30,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 2857 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-03 02:20:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 531. [2022-11-03 02:20:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.3773584905660377) internal successors, (730), 530 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 730 transitions. [2022-11-03 02:20:30,980 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 730 transitions. Word has length 298 [2022-11-03 02:20:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:30,980 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 730 transitions. [2022-11-03 02:20:30,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 730 transitions. [2022-11-03 02:20:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:30,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:30,982 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:31,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-03 02:20:31,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:31,183 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash -526045171, now seen corresponding path program 1 times [2022-11-03 02:20:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:31,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468202025] [2022-11-03 02:20:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:31,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:31,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:31,185 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:31,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 02:20:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:31,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:31,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:32,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:32,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:32,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468202025] [2022-11-03 02:20:32,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468202025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:32,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:32,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:32,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285638276] [2022-11-03 02:20:32,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:32,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:32,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:32,548 INFO L87 Difference]: Start difference. First operand 531 states and 730 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:32,833 INFO L93 Difference]: Finished difference Result 1500 states and 2172 transitions. [2022-11-03 02:20:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:32,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:32,835 INFO L225 Difference]: With dead ends: 1500 [2022-11-03 02:20:32,835 INFO L226 Difference]: Without dead ends: 1175 [2022-11-03 02:20:32,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:32,836 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1511 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:32,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 2482 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:20:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-11-03 02:20:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 533. [2022-11-03 02:20:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.3759398496240602) internal successors, (732), 532 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 732 transitions. [2022-11-03 02:20:32,844 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 732 transitions. Word has length 298 [2022-11-03 02:20:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:32,844 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 732 transitions. [2022-11-03 02:20:32,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 732 transitions. [2022-11-03 02:20:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:32,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:32,846 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:32,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-03 02:20:33,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:33,047 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:33,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash -37998065, now seen corresponding path program 1 times [2022-11-03 02:20:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:33,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134464156] [2022-11-03 02:20:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:33,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:33,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:33,049 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:33,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 02:20:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:33,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:33,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:34,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:34,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:34,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134464156] [2022-11-03 02:20:34,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134464156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:34,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:34,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:34,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526473423] [2022-11-03 02:20:34,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:34,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:34,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:34,137 INFO L87 Difference]: Start difference. First operand 533 states and 732 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:34,427 INFO L93 Difference]: Finished difference Result 1306 states and 1881 transitions. [2022-11-03 02:20:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:34,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:34,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:34,429 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:34,429 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:34,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:34,430 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 833 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:34,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2889 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2022-11-03 02:20:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:34,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 535. [2022-11-03 02:20:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.3745318352059925) internal successors, (734), 534 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 734 transitions. [2022-11-03 02:20:34,439 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 734 transitions. Word has length 298 [2022-11-03 02:20:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:34,440 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 734 transitions. [2022-11-03 02:20:34,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 734 transitions. [2022-11-03 02:20:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:34,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:34,442 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:34,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-03 02:20:34,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:34,642 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1320170351, now seen corresponding path program 1 times [2022-11-03 02:20:34,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:34,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312391122] [2022-11-03 02:20:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:34,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:34,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:34,645 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:34,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 02:20:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:35,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:35,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:35,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:35,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:35,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312391122] [2022-11-03 02:20:35,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312391122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:35,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:35,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:35,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552912020] [2022-11-03 02:20:35,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:35,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:35,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:35,993 INFO L87 Difference]: Start difference. First operand 535 states and 734 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:36,286 INFO L93 Difference]: Finished difference Result 1492 states and 2158 transitions. [2022-11-03 02:20:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:36,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:36,288 INFO L225 Difference]: With dead ends: 1492 [2022-11-03 02:20:36,288 INFO L226 Difference]: Without dead ends: 1167 [2022-11-03 02:20:36,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:36,289 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1477 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:36,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 2460 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-11-03 02:20:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 539. [2022-11-03 02:20:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.3736059479553904) internal successors, (739), 538 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 739 transitions. [2022-11-03 02:20:36,297 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 739 transitions. Word has length 298 [2022-11-03 02:20:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:36,297 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 739 transitions. [2022-11-03 02:20:36,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 739 transitions. [2022-11-03 02:20:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:36,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:36,299 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:36,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:36,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:36,500 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:36,500 INFO L85 PathProgramCache]: Analyzing trace with hash 608761875, now seen corresponding path program 1 times [2022-11-03 02:20:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:36,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280733929] [2022-11-03 02:20:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:36,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:36,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:36,503 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:36,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 02:20:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:37,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:37,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:37,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:37,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:37,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280733929] [2022-11-03 02:20:37,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280733929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:37,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:37,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510414695] [2022-11-03 02:20:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:37,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:37,605 INFO L87 Difference]: Start difference. First operand 539 states and 739 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:37,925 INFO L93 Difference]: Finished difference Result 1306 states and 1879 transitions. [2022-11-03 02:20:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:37,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:37,926 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:37,926 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:37,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:37,927 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 816 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:37,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 2877 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2022-11-03 02:20:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 541. [2022-11-03 02:20:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 1.3722222222222222) internal successors, (741), 540 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 741 transitions. [2022-11-03 02:20:37,938 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 741 transitions. Word has length 298 [2022-11-03 02:20:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:37,939 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 741 transitions. [2022-11-03 02:20:37,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 741 transitions. [2022-11-03 02:20:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:37,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:37,941 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:37,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:38,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:38,161 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1959060459, now seen corresponding path program 1 times [2022-11-03 02:20:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:38,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941160446] [2022-11-03 02:20:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:38,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:38,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:38,164 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:38,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 02:20:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:38,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:38,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:39,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:39,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:39,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941160446] [2022-11-03 02:20:39,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941160446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:39,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:39,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966362420] [2022-11-03 02:20:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:39,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:39,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:39,507 INFO L87 Difference]: Start difference. First operand 541 states and 741 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:39,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:39,811 INFO L93 Difference]: Finished difference Result 1492 states and 2156 transitions. [2022-11-03 02:20:39,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:39,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:39,812 INFO L225 Difference]: With dead ends: 1492 [2022-11-03 02:20:39,812 INFO L226 Difference]: Without dead ends: 1167 [2022-11-03 02:20:39,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:39,813 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1463 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:39,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 2452 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:39,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-11-03 02:20:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 543. [2022-11-03 02:20:39,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.3708487084870848) internal successors, (743), 542 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 743 transitions. [2022-11-03 02:20:39,820 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 743 transitions. Word has length 298 [2022-11-03 02:20:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:39,820 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 743 transitions. [2022-11-03 02:20:39,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 743 transitions. [2022-11-03 02:20:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:39,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:39,822 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:39,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:40,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:40,022 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:40,023 INFO L85 PathProgramCache]: Analyzing trace with hash 688543895, now seen corresponding path program 1 times [2022-11-03 02:20:40,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:40,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6138669] [2022-11-03 02:20:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:40,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:40,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:40,025 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:40,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-03 02:20:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:40,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:41,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:41,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:41,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6138669] [2022-11-03 02:20:41,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6138669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:41,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:41,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:41,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083837757] [2022-11-03 02:20:41,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:41,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:41,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:41,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:41,098 INFO L87 Difference]: Start difference. First operand 543 states and 743 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:41,282 INFO L93 Difference]: Finished difference Result 1324 states and 1904 transitions. [2022-11-03 02:20:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:41,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:41,284 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:20:41,284 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:20:41,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:41,285 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1209 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:41,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 2289 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:20:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 545. [2022-11-03 02:20:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.369485294117647) internal successors, (745), 544 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 745 transitions. [2022-11-03 02:20:41,293 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 745 transitions. Word has length 298 [2022-11-03 02:20:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:41,293 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 745 transitions. [2022-11-03 02:20:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 745 transitions. [2022-11-03 02:20:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:41,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:41,295 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:41,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:41,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:41,510 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash -350040679, now seen corresponding path program 1 times [2022-11-03 02:20:41,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:41,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503688418] [2022-11-03 02:20:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:41,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:41,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:41,513 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:41,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 02:20:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:42,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:20:42,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:42,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:42,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:42,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503688418] [2022-11-03 02:20:42,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503688418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:42,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:42,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:42,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341385256] [2022-11-03 02:20:42,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:42,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:42,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:42,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:42,745 INFO L87 Difference]: Start difference. First operand 545 states and 745 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:43,067 INFO L93 Difference]: Finished difference Result 1324 states and 1903 transitions. [2022-11-03 02:20:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:43,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:43,069 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:20:43,069 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:20:43,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:43,071 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 847 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:43,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2880 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-03 02:20:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:20:43,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 549. [2022-11-03 02:20:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.3686131386861313) internal successors, (750), 548 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 750 transitions. [2022-11-03 02:20:43,082 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 750 transitions. Word has length 298 [2022-11-03 02:20:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:43,082 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 750 transitions. [2022-11-03 02:20:43,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 750 transitions. [2022-11-03 02:20:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:43,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:43,085 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:43,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:43,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:43,298 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:43,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash -231599205, now seen corresponding path program 1 times [2022-11-03 02:20:43,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:43,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705126686] [2022-11-03 02:20:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:43,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:43,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:43,301 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:43,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 02:20:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:44,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:20:44,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:44,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:44,531 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705126686] [2022-11-03 02:20:44,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705126686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:44,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:44,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117490324] [2022-11-03 02:20:44,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:44,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:44,535 INFO L87 Difference]: Start difference. First operand 549 states and 750 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:44,866 INFO L93 Difference]: Finished difference Result 1324 states and 1902 transitions. [2022-11-03 02:20:44,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:44,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:44,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:44,868 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:20:44,868 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:20:44,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:44,869 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 821 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:44,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2915 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 37 Unchecked, 0.3s Time] [2022-11-03 02:20:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:20:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 559. [2022-11-03 02:20:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.3691756272401434) internal successors, (764), 558 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 764 transitions. [2022-11-03 02:20:44,880 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 764 transitions. Word has length 298 [2022-11-03 02:20:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:44,881 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 764 transitions. [2022-11-03 02:20:44,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 764 transitions. [2022-11-03 02:20:44,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:44,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:44,883 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:44,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-03 02:20:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:45,084 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1119786013, now seen corresponding path program 1 times [2022-11-03 02:20:45,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:45,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750067312] [2022-11-03 02:20:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:45,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:45,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:45,087 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:45,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-03 02:20:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:45,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:45,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:46,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:46,503 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750067312] [2022-11-03 02:20:46,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750067312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:46,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:46,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:46,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970391787] [2022-11-03 02:20:46,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:46,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:46,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:46,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:46,506 INFO L87 Difference]: Start difference. First operand 559 states and 764 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:46,817 INFO L93 Difference]: Finished difference Result 1492 states and 2152 transitions. [2022-11-03 02:20:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:46,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:46,819 INFO L225 Difference]: With dead ends: 1492 [2022-11-03 02:20:46,819 INFO L226 Difference]: Without dead ends: 1167 [2022-11-03 02:20:46,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:46,820 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1405 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:46,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 2418 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-11-03 02:20:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 563. [2022-11-03 02:20:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.3683274021352314) internal successors, (769), 562 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 769 transitions. [2022-11-03 02:20:46,828 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 769 transitions. Word has length 298 [2022-11-03 02:20:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:46,829 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 769 transitions. [2022-11-03 02:20:46,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:46,829 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 769 transitions. [2022-11-03 02:20:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:46,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:46,831 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:46,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2022-11-03 02:20:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:47,031 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash -820796001, now seen corresponding path program 1 times [2022-11-03 02:20:47,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:47,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163439462] [2022-11-03 02:20:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:47,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:47,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:47,034 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:47,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 02:20:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:47,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:20:47,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:49,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:49,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:49,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163439462] [2022-11-03 02:20:49,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163439462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:49,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:49,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:49,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583214437] [2022-11-03 02:20:49,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:49,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:49,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:49,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:49,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:49,161 INFO L87 Difference]: Start difference. First operand 563 states and 769 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:49,436 INFO L93 Difference]: Finished difference Result 1490 states and 2148 transitions. [2022-11-03 02:20:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:49,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:49,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:49,437 INFO L225 Difference]: With dead ends: 1490 [2022-11-03 02:20:49,438 INFO L226 Difference]: Without dead ends: 1165 [2022-11-03 02:20:49,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:49,438 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 1394 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:49,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 2408 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:20:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-11-03 02:20:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 565. [2022-11-03 02:20:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.3670212765957446) internal successors, (771), 564 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 771 transitions. [2022-11-03 02:20:49,446 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 771 transitions. Word has length 298 [2022-11-03 02:20:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:49,446 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 771 transitions. [2022-11-03 02:20:49,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 771 transitions. [2022-11-03 02:20:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:49,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:49,448 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:49,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 02:20:49,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:49,649 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1591529567, now seen corresponding path program 1 times [2022-11-03 02:20:49,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:49,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852448570] [2022-11-03 02:20:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:49,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:49,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:49,652 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:49,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-03 02:20:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:50,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:50,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:51,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:51,115 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:51,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852448570] [2022-11-03 02:20:51,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852448570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:51,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:51,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:51,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516653079] [2022-11-03 02:20:51,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:51,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:51,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:51,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:51,116 INFO L87 Difference]: Start difference. First operand 565 states and 771 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:51,393 INFO L93 Difference]: Finished difference Result 1542 states and 2225 transitions. [2022-11-03 02:20:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:51,395 INFO L225 Difference]: With dead ends: 1542 [2022-11-03 02:20:51,395 INFO L226 Difference]: Without dead ends: 1217 [2022-11-03 02:20:51,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:51,396 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 1472 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:51,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 2475 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:20:51,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-11-03 02:20:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 571. [2022-11-03 02:20:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.3666666666666667) internal successors, (779), 570 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 779 transitions. [2022-11-03 02:20:51,406 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 779 transitions. Word has length 298 [2022-11-03 02:20:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:51,406 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 779 transitions. [2022-11-03 02:20:51,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:51,407 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 779 transitions. [2022-11-03 02:20:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:51,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:51,408 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:51,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:51,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:51,609 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash -266673373, now seen corresponding path program 1 times [2022-11-03 02:20:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:51,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578184571] [2022-11-03 02:20:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:51,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:51,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:51,611 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:51,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 02:20:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:52,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:52,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:53,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:53,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:53,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578184571] [2022-11-03 02:20:53,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578184571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:53,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:53,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380985820] [2022-11-03 02:20:53,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:53,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:53,114 INFO L87 Difference]: Start difference. First operand 571 states and 779 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:53,398 INFO L93 Difference]: Finished difference Result 1542 states and 2224 transitions. [2022-11-03 02:20:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:53,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:53,400 INFO L225 Difference]: With dead ends: 1542 [2022-11-03 02:20:53,400 INFO L226 Difference]: Without dead ends: 1217 [2022-11-03 02:20:53,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:53,401 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 1465 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:53,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2471 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:20:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-11-03 02:20:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 573. [2022-11-03 02:20:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.3653846153846154) internal successors, (781), 572 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 781 transitions. [2022-11-03 02:20:53,407 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 781 transitions. Word has length 298 [2022-11-03 02:20:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:53,408 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 781 transitions. [2022-11-03 02:20:53,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 781 transitions. [2022-11-03 02:20:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:53,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:53,410 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:53,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-03 02:20:53,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:53,610 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:53,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:53,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1324511451, now seen corresponding path program 1 times [2022-11-03 02:20:53,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:53,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044650284] [2022-11-03 02:20:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:53,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:53,613 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:53,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-03 02:20:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:54,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:20:54,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:54,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:54,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:54,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044650284] [2022-11-03 02:20:54,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044650284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:54,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:54,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:54,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339786794] [2022-11-03 02:20:54,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:54,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:54,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:54,659 INFO L87 Difference]: Start difference. First operand 573 states and 781 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:54,831 INFO L93 Difference]: Finished difference Result 1306 states and 1870 transitions. [2022-11-03 02:20:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:20:54,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:54,833 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:54,833 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:54,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:54,834 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1086 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:54,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 2210 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 575. [2022-11-03 02:20:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.3641114982578397) internal successors, (783), 574 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:54,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 783 transitions. [2022-11-03 02:20:54,840 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 783 transitions. Word has length 298 [2022-11-03 02:20:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:54,840 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 783 transitions. [2022-11-03 02:20:54,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:54,840 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 783 transitions. [2022-11-03 02:20:54,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:54,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:54,841 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:54,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2022-11-03 02:20:55,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:55,042 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1084271705, now seen corresponding path program 1 times [2022-11-03 02:20:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:55,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481627538] [2022-11-03 02:20:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:55,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:55,044 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:55,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 02:20:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:55,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:55,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:56,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:56,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:56,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481627538] [2022-11-03 02:20:56,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481627538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:56,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:56,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:56,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928175476] [2022-11-03 02:20:56,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:56,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:56,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:56,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:56,181 INFO L87 Difference]: Start difference. First operand 575 states and 783 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:56,468 INFO L93 Difference]: Finished difference Result 1306 states and 1869 transitions. [2022-11-03 02:20:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:56,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:56,470 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:56,470 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:56,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:56,470 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 716 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:56,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2973 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-03 02:20:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 577. [2022-11-03 02:20:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.3628472222222223) internal successors, (785), 576 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 785 transitions. [2022-11-03 02:20:56,481 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 785 transitions. Word has length 298 [2022-11-03 02:20:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:56,481 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 785 transitions. [2022-11-03 02:20:56,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 785 transitions. [2022-11-03 02:20:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:56,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:56,483 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:56,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 02:20:56,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:56,697 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:56,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1057206103, now seen corresponding path program 1 times [2022-11-03 02:20:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:56,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433487894] [2022-11-03 02:20:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:56,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:56,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:56,701 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:56,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-03 02:20:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:57,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:20:57,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:57,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:57,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:57,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433487894] [2022-11-03 02:20:57,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433487894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:57,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:57,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:57,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162359445] [2022-11-03 02:20:57,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:57,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:57,853 INFO L87 Difference]: Start difference. First operand 577 states and 785 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:58,187 INFO L93 Difference]: Finished difference Result 1306 states and 1868 transitions. [2022-11-03 02:20:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:58,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:20:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:58,189 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:20:58,189 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:20:58,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:58,190 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 710 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:58,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 2953 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-03 02:20:58,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:20:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 579. [2022-11-03 02:20:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.3615916955017302) internal successors, (787), 578 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 787 transitions. [2022-11-03 02:20:58,197 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 787 transitions. Word has length 298 [2022-11-03 02:20:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:58,197 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 787 transitions. [2022-11-03 02:20:58,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 787 transitions. [2022-11-03 02:20:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:20:58,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:58,199 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:58,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2022-11-03 02:20:58,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:58,399 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:58,400 INFO L85 PathProgramCache]: Analyzing trace with hash 676898347, now seen corresponding path program 1 times [2022-11-03 02:20:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:58,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729944349] [2022-11-03 02:20:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:58,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:58,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:58,402 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:58,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-03 02:20:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:59,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:20:59,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:59,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:59,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:59,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729944349] [2022-11-03 02:20:59,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729944349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:59,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:59,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:59,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036775587] [2022-11-03 02:20:59,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:59,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:59,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:59,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:59,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:59,910 INFO L87 Difference]: Start difference. First operand 579 states and 787 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:00,201 INFO L93 Difference]: Finished difference Result 1548 states and 2229 transitions. [2022-11-03 02:21:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:00,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:00,203 INFO L225 Difference]: With dead ends: 1548 [2022-11-03 02:21:00,203 INFO L226 Difference]: Without dead ends: 1223 [2022-11-03 02:21:00,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:00,204 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1448 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:00,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 2463 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-11-03 02:21:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 581. [2022-11-03 02:21:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.360344827586207) internal successors, (789), 580 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 789 transitions. [2022-11-03 02:21:00,215 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 789 transitions. Word has length 298 [2022-11-03 02:21:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:00,215 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 789 transitions. [2022-11-03 02:21:00,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:00,215 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 789 transitions. [2022-11-03 02:21:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:00,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:00,217 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:00,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:00,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:00,417 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:00,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1234144211, now seen corresponding path program 1 times [2022-11-03 02:21:00,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:00,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225429253] [2022-11-03 02:21:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:00,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:00,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:00,420 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:00,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 02:21:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:01,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:21:01,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:01,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:01,549 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:01,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225429253] [2022-11-03 02:21:01,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225429253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:01,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:01,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180439369] [2022-11-03 02:21:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:01,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:01,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:01,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:01,552 INFO L87 Difference]: Start difference. First operand 581 states and 789 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:01,839 INFO L93 Difference]: Finished difference Result 1306 states and 1866 transitions. [2022-11-03 02:21:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:01,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:01,841 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:21:01,841 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:21:01,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:01,841 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 698 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:01,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 2983 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-03 02:21:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:21:01,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 583. [2022-11-03 02:21:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 1.359106529209622) internal successors, (791), 582 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 791 transitions. [2022-11-03 02:21:01,847 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 791 transitions. Word has length 298 [2022-11-03 02:21:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:01,847 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 791 transitions. [2022-11-03 02:21:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 791 transitions. [2022-11-03 02:21:01,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:01,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:01,849 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:01,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-03 02:21:02,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:02,049 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2093472431, now seen corresponding path program 1 times [2022-11-03 02:21:02,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:02,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231193255] [2022-11-03 02:21:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:02,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:02,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:02,052 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:02,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-03 02:21:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:02,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:21:02,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:03,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:03,252 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:03,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231193255] [2022-11-03 02:21:03,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231193255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:03,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:03,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:03,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492302098] [2022-11-03 02:21:03,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:03,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:03,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:03,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:03,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:03,254 INFO L87 Difference]: Start difference. First operand 583 states and 791 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:03,570 INFO L93 Difference]: Finished difference Result 1306 states and 1865 transitions. [2022-11-03 02:21:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:03,572 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:21:03,572 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:21:03,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:03,573 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 692 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:03,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 2960 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2022-11-03 02:21:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:21:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 585. [2022-11-03 02:21:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.3578767123287672) internal successors, (793), 584 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 793 transitions. [2022-11-03 02:21:03,584 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 793 transitions. Word has length 298 [2022-11-03 02:21:03,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:03,584 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 793 transitions. [2022-11-03 02:21:03,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 793 transitions. [2022-11-03 02:21:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:03,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:03,587 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:03,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:03,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:03,802 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1600846257, now seen corresponding path program 1 times [2022-11-03 02:21:03,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:03,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672220752] [2022-11-03 02:21:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:03,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:03,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:03,806 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:03,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-03 02:21:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:04,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:21:04,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:05,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:05,135 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:05,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672220752] [2022-11-03 02:21:05,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672220752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:05,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:05,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:05,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974453364] [2022-11-03 02:21:05,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:05,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:05,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:05,137 INFO L87 Difference]: Start difference. First operand 585 states and 793 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:05,423 INFO L93 Difference]: Finished difference Result 1306 states and 1864 transitions. [2022-11-03 02:21:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:05,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:05,425 INFO L225 Difference]: With dead ends: 1306 [2022-11-03 02:21:05,425 INFO L226 Difference]: Without dead ends: 981 [2022-11-03 02:21:05,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:05,426 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 681 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:05,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 2970 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-11-03 02:21:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-03 02:21:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 589. [2022-11-03 02:21:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.3571428571428572) internal successors, (798), 588 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 798 transitions. [2022-11-03 02:21:05,435 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 798 transitions. Word has length 298 [2022-11-03 02:21:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:05,435 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 798 transitions. [2022-11-03 02:21:05,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 798 transitions. [2022-11-03 02:21:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:05,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:05,437 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:05,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:05,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:05,638 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:05,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash -85333581, now seen corresponding path program 1 times [2022-11-03 02:21:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:05,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068968573] [2022-11-03 02:21:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:05,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:05,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:05,641 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:05,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-03 02:21:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:06,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:21:06,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:07,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:07,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:07,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068968573] [2022-11-03 02:21:07,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068968573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:07,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:07,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231404786] [2022-11-03 02:21:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:07,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:07,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:07,129 INFO L87 Difference]: Start difference. First operand 589 states and 798 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:07,397 INFO L93 Difference]: Finished difference Result 1548 states and 2225 transitions. [2022-11-03 02:21:07,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:07,399 INFO L225 Difference]: With dead ends: 1548 [2022-11-03 02:21:07,399 INFO L226 Difference]: Without dead ends: 1223 [2022-11-03 02:21:07,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:07,400 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1415 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:07,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 2444 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:07,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-11-03 02:21:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 591. [2022-11-03 02:21:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 1.3559322033898304) internal successors, (800), 590 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 800 transitions. [2022-11-03 02:21:07,406 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 800 transitions. Word has length 298 [2022-11-03 02:21:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:07,406 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 800 transitions. [2022-11-03 02:21:07,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 800 transitions. [2022-11-03 02:21:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:07,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:07,407 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:07,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:07,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:07,608 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -502730187, now seen corresponding path program 1 times [2022-11-03 02:21:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:07,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818078193] [2022-11-03 02:21:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:07,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:07,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:07,611 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:07,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 02:21:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:08,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:21:08,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:08,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:08,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:08,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818078193] [2022-11-03 02:21:08,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818078193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:08,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:08,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:08,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009111669] [2022-11-03 02:21:08,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:08,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:08,755 INFO L87 Difference]: Start difference. First operand 591 states and 800 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:08,873 INFO L93 Difference]: Finished difference Result 1370 states and 1958 transitions. [2022-11-03 02:21:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:08,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:08,874 INFO L225 Difference]: With dead ends: 1370 [2022-11-03 02:21:08,874 INFO L226 Difference]: Without dead ends: 1045 [2022-11-03 02:21:08,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:08,875 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1144 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:08,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 2271 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:21:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-11-03 02:21:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 593. [2022-11-03 02:21:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.3547297297297298) internal successors, (802), 592 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 802 transitions. [2022-11-03 02:21:08,881 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 802 transitions. Word has length 298 [2022-11-03 02:21:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:08,882 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 802 transitions. [2022-11-03 02:21:08,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 802 transitions. [2022-11-03 02:21:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:08,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:08,883 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:08,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-03 02:21:09,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:09,084 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:09,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:09,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1458844471, now seen corresponding path program 1 times [2022-11-03 02:21:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:09,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873999716] [2022-11-03 02:21:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:09,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:09,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:09,086 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:09,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 02:21:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:09,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:21:09,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:10,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:10,289 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:10,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873999716] [2022-11-03 02:21:10,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873999716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:10,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:10,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:10,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091260273] [2022-11-03 02:21:10,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:10,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:10,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:10,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:10,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:10,291 INFO L87 Difference]: Start difference. First operand 593 states and 802 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:10,604 INFO L93 Difference]: Finished difference Result 1324 states and 1888 transitions. [2022-11-03 02:21:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:10,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:10,606 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:21:10,606 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:21:10,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:10,609 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 707 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:10,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 2984 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 32 Unchecked, 0.3s Time] [2022-11-03 02:21:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:21:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 599. [2022-11-03 02:21:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.354515050167224) internal successors, (810), 598 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 810 transitions. [2022-11-03 02:21:10,618 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 810 transitions. Word has length 298 [2022-11-03 02:21:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:10,618 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 810 transitions. [2022-11-03 02:21:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 810 transitions. [2022-11-03 02:21:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:10,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:10,620 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:10,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:10,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:10,821 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1449337415, now seen corresponding path program 1 times [2022-11-03 02:21:10,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:10,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403409829] [2022-11-03 02:21:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:10,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:10,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:10,823 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:10,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-03 02:21:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:11,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:21:11,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:12,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:12,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:12,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403409829] [2022-11-03 02:21:12,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403409829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:12,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:12,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082536456] [2022-11-03 02:21:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:12,400 INFO L87 Difference]: Start difference. First operand 599 states and 810 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:12,706 INFO L93 Difference]: Finished difference Result 1250 states and 1779 transitions. [2022-11-03 02:21:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:12,708 INFO L225 Difference]: With dead ends: 1250 [2022-11-03 02:21:12,708 INFO L226 Difference]: Without dead ends: 925 [2022-11-03 02:21:12,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:12,709 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 993 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:12,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1949 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:12,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-11-03 02:21:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 601. [2022-11-03 02:21:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.3533333333333333) internal successors, (812), 600 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 812 transitions. [2022-11-03 02:21:12,719 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 812 transitions. Word has length 298 [2022-11-03 02:21:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:12,719 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 812 transitions. [2022-11-03 02:21:12,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 812 transitions. [2022-11-03 02:21:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:12,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:12,722 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:12,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:12,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:12,947 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1893238089, now seen corresponding path program 1 times [2022-11-03 02:21:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:12,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072758678] [2022-11-03 02:21:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:12,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:12,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:12,952 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:12,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-03 02:21:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:13,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:21:13,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:14,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:14,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:14,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072758678] [2022-11-03 02:21:14,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072758678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:14,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:14,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:14,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151543071] [2022-11-03 02:21:14,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:14,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:14,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:14,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:14,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:14,340 INFO L87 Difference]: Start difference. First operand 601 states and 812 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:14,638 INFO L93 Difference]: Finished difference Result 1324 states and 1886 transitions. [2022-11-03 02:21:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:14,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:14,640 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:21:14,640 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:21:14,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:14,640 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 685 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:14,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 3000 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-03 02:21:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:21:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 607. [2022-11-03 02:21:14,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 1.353135313531353) internal successors, (820), 606 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 820 transitions. [2022-11-03 02:21:14,647 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 820 transitions. Word has length 298 [2022-11-03 02:21:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:14,647 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 820 transitions. [2022-11-03 02:21:14,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 820 transitions. [2022-11-03 02:21:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:14,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:14,649 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:14,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2022-11-03 02:21:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:14,849 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:14,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2048640825, now seen corresponding path program 1 times [2022-11-03 02:21:14,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:14,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659883896] [2022-11-03 02:21:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:14,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:14,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:14,853 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:14,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 02:21:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:15,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:21:15,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:16,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:16,124 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:16,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659883896] [2022-11-03 02:21:16,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659883896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:16,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:16,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:16,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825498726] [2022-11-03 02:21:16,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:16,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:16,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:16,126 INFO L87 Difference]: Start difference. First operand 607 states and 820 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:16,415 INFO L93 Difference]: Finished difference Result 1324 states and 1885 transitions. [2022-11-03 02:21:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:16,417 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:21:16,417 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:21:16,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:16,418 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 674 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:16,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 3012 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-03 02:21:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:21:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 611. [2022-11-03 02:21:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.3524590163934427) internal successors, (825), 610 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 825 transitions. [2022-11-03 02:21:16,424 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 825 transitions. Word has length 298 [2022-11-03 02:21:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:16,424 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 825 transitions. [2022-11-03 02:21:16,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 825 transitions. [2022-11-03 02:21:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:16,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:16,426 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:16,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:16,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:16,630 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:16,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1151247547, now seen corresponding path program 1 times [2022-11-03 02:21:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:16,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247052484] [2022-11-03 02:21:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:16,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:16,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:16,634 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:16,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 02:21:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:17,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:21:17,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:18,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:18,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:18,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247052484] [2022-11-03 02:21:18,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247052484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:18,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:18,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:18,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165841878] [2022-11-03 02:21:18,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:18,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:18,165 INFO L87 Difference]: Start difference. First operand 611 states and 825 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:18,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:18,451 INFO L93 Difference]: Finished difference Result 1548 states and 2219 transitions. [2022-11-03 02:21:18,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:18,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:18,453 INFO L225 Difference]: With dead ends: 1548 [2022-11-03 02:21:18,453 INFO L226 Difference]: Without dead ends: 1223 [2022-11-03 02:21:18,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:18,454 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 1343 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:18,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 2402 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-11-03 02:21:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 615. [2022-11-03 02:21:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.3517915309446253) internal successors, (830), 614 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 830 transitions. [2022-11-03 02:21:18,465 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 830 transitions. Word has length 298 [2022-11-03 02:21:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:18,465 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 830 transitions. [2022-11-03 02:21:18,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 830 transitions. [2022-11-03 02:21:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:18,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:18,467 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:18,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:18,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:18,667 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:18,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:18,668 INFO L85 PathProgramCache]: Analyzing trace with hash -694119619, now seen corresponding path program 1 times [2022-11-03 02:21:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:18,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221318285] [2022-11-03 02:21:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:18,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:18,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:18,670 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:18,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-03 02:21:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:19,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:21:19,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:21,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:21,342 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:21,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221318285] [2022-11-03 02:21:21,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221318285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:21,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:21,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113556639] [2022-11-03 02:21:21,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:21,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:21,344 INFO L87 Difference]: Start difference. First operand 615 states and 830 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:21,639 INFO L93 Difference]: Finished difference Result 1542 states and 2209 transitions. [2022-11-03 02:21:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:21,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:21,641 INFO L225 Difference]: With dead ends: 1542 [2022-11-03 02:21:21,641 INFO L226 Difference]: Without dead ends: 1217 [2022-11-03 02:21:21,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:21,642 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1325 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:21,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 2386 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-11-03 02:21:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 617. [2022-11-03 02:21:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.3506493506493507) internal successors, (832), 616 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 832 transitions. [2022-11-03 02:21:21,649 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 832 transitions. Word has length 298 [2022-11-03 02:21:21,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:21,649 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 832 transitions. [2022-11-03 02:21:21,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:21,649 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 832 transitions. [2022-11-03 02:21:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:21,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:21,651 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:21,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-03 02:21:21,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:21,851 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash -34588097, now seen corresponding path program 1 times [2022-11-03 02:21:21,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:21,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661051338] [2022-11-03 02:21:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:21,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:21,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:21,854 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:21,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-03 02:21:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:22,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:21:22,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:23,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:23,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661051338] [2022-11-03 02:21:23,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661051338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:23,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:23,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:23,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019474318] [2022-11-03 02:21:23,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:23,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:23,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:23,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:23,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:23,141 INFO L87 Difference]: Start difference. First operand 617 states and 832 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:23,249 INFO L93 Difference]: Finished difference Result 1423 states and 2030 transitions. [2022-11-03 02:21:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:23,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:23,251 INFO L225 Difference]: With dead ends: 1423 [2022-11-03 02:21:23,251 INFO L226 Difference]: Without dead ends: 1098 [2022-11-03 02:21:23,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:23,252 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 1107 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:23,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 2269 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:21:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-03 02:21:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 621. [2022-11-03 02:21:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 1.35) internal successors, (837), 620 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 837 transitions. [2022-11-03 02:21:23,258 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 837 transitions. Word has length 298 [2022-11-03 02:21:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:23,258 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 837 transitions. [2022-11-03 02:21:23,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 837 transitions. [2022-11-03 02:21:23,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:23,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:23,260 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:23,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-03 02:21:23,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:23,474 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash -106974655, now seen corresponding path program 1 times [2022-11-03 02:21:23,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:23,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521520208] [2022-11-03 02:21:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:23,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:23,478 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:23,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 02:21:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:24,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:21:24,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:24,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:24,694 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:24,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521520208] [2022-11-03 02:21:24,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521520208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:24,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:24,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:24,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256348052] [2022-11-03 02:21:24,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:24,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:24,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:24,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:24,696 INFO L87 Difference]: Start difference. First operand 621 states and 837 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:25,017 INFO L93 Difference]: Finished difference Result 1324 states and 1881 transitions. [2022-11-03 02:21:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:25,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:25,019 INFO L225 Difference]: With dead ends: 1324 [2022-11-03 02:21:25,019 INFO L226 Difference]: Without dead ends: 999 [2022-11-03 02:21:25,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:25,019 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 625 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:25,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 3043 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 33 Unchecked, 0.3s Time] [2022-11-03 02:21:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-03 02:21:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 629. [2022-11-03 02:21:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 628 states have (on average 1.3503184713375795) internal successors, (848), 628 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 848 transitions. [2022-11-03 02:21:25,029 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 848 transitions. Word has length 298 [2022-11-03 02:21:25,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:25,030 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 848 transitions. [2022-11-03 02:21:25,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:25,030 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 848 transitions. [2022-11-03 02:21:25,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:25,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:25,032 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:25,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-03 02:21:25,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:25,245 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash 33573955, now seen corresponding path program 1 times [2022-11-03 02:21:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:25,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569546688] [2022-11-03 02:21:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:25,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:25,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:25,248 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:25,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-03 02:21:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:25,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:21:25,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:26,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:26,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:26,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569546688] [2022-11-03 02:21:26,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569546688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:26,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:26,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:26,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352846764] [2022-11-03 02:21:26,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:26,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:21:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:21:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:26,336 INFO L87 Difference]: Start difference. First operand 629 states and 848 transitions. Second operand has 7 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:26,681 INFO L93 Difference]: Finished difference Result 1807 states and 2551 transitions. [2022-11-03 02:21:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:21:26,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:26,683 INFO L225 Difference]: With dead ends: 1807 [2022-11-03 02:21:26,683 INFO L226 Difference]: Without dead ends: 1482 [2022-11-03 02:21:26,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:21:26,684 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 2916 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2916 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:26,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2916 Valid, 2901 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:21:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-11-03 02:21:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 981. [2022-11-03 02:21:26,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.346938775510204) internal successors, (1320), 980 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1320 transitions. [2022-11-03 02:21:26,696 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1320 transitions. Word has length 298 [2022-11-03 02:21:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:26,697 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1320 transitions. [2022-11-03 02:21:26,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:26,697 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1320 transitions. [2022-11-03 02:21:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:26,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:26,699 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:26,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2022-11-03 02:21:26,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:26,900 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash -389127871, now seen corresponding path program 1 times [2022-11-03 02:21:26,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:26,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397060621] [2022-11-03 02:21:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:26,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:26,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:26,902 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:26,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 02:21:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:27,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:21:27,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:28,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:28,158 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:28,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397060621] [2022-11-03 02:21:28,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397060621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:28,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:28,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:28,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87107520] [2022-11-03 02:21:28,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:28,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:28,160 INFO L87 Difference]: Start difference. First operand 981 states and 1320 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:28,456 INFO L93 Difference]: Finished difference Result 2036 states and 2887 transitions. [2022-11-03 02:21:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:28,458 INFO L225 Difference]: With dead ends: 2036 [2022-11-03 02:21:28,458 INFO L226 Difference]: Without dead ends: 1533 [2022-11-03 02:21:28,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:28,459 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 599 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:28,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 3077 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-03 02:21:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-11-03 02:21:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 995. [2022-11-03 02:21:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.347082494969819) internal successors, (1339), 994 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1339 transitions. [2022-11-03 02:21:28,469 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1339 transitions. Word has length 298 [2022-11-03 02:21:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:28,469 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1339 transitions. [2022-11-03 02:21:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1339 transitions. [2022-11-03 02:21:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:28,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:28,471 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:28,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-03 02:21:28,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:28,671 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1668991549, now seen corresponding path program 1 times [2022-11-03 02:21:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:28,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208350245] [2022-11-03 02:21:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:28,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:28,674 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:28,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-03 02:21:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:29,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:21:29,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:29,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:29,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:29,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208350245] [2022-11-03 02:21:29,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208350245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:29,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:29,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:29,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501527513] [2022-11-03 02:21:29,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:29,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:29,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:29,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:29,989 INFO L87 Difference]: Start difference. First operand 995 states and 1339 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:30,331 INFO L93 Difference]: Finished difference Result 2036 states and 2886 transitions. [2022-11-03 02:21:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:30,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:30,333 INFO L225 Difference]: With dead ends: 2036 [2022-11-03 02:21:30,333 INFO L226 Difference]: Without dead ends: 1533 [2022-11-03 02:21:30,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:30,334 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 588 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:30,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 3084 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 36 Unchecked, 0.3s Time] [2022-11-03 02:21:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-11-03 02:21:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 999. [2022-11-03 02:21:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.346693386773547) internal successors, (1344), 998 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1344 transitions. [2022-11-03 02:21:30,351 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1344 transitions. Word has length 298 [2022-11-03 02:21:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:30,351 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1344 transitions. [2022-11-03 02:21:30,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1344 transitions. [2022-11-03 02:21:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:30,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:30,354 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:30,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:30,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:30,578 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash -967926971, now seen corresponding path program 1 times [2022-11-03 02:21:30,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:30,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595236748] [2022-11-03 02:21:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:30,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:30,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:30,581 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:30,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-03 02:21:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:31,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:21:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:32,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:32,192 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:32,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595236748] [2022-11-03 02:21:32,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595236748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:32,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:32,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:32,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116516960] [2022-11-03 02:21:32,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:32,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:32,194 INFO L87 Difference]: Start difference. First operand 999 states and 1344 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:32,493 INFO L93 Difference]: Finished difference Result 2471 states and 3535 transitions. [2022-11-03 02:21:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:32,496 INFO L225 Difference]: With dead ends: 2471 [2022-11-03 02:21:32,496 INFO L226 Difference]: Without dead ends: 1968 [2022-11-03 02:21:32,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:32,497 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 1335 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:32,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 2414 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2022-11-03 02:21:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1003. [2022-11-03 02:21:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.3463073852295409) internal successors, (1349), 1002 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1349 transitions. [2022-11-03 02:21:32,512 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1349 transitions. Word has length 298 [2022-11-03 02:21:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:32,512 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1349 transitions. [2022-11-03 02:21:32,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1349 transitions. [2022-11-03 02:21:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:32,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:32,515 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:32,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-03 02:21:32,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:32,715 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:32,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash 807080391, now seen corresponding path program 1 times [2022-11-03 02:21:32,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:32,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217220132] [2022-11-03 02:21:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:32,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:32,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:32,718 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:32,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-03 02:21:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:33,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:21:33,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:35,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:35,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:35,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217220132] [2022-11-03 02:21:35,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217220132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:35,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:35,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:21:35,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746747156] [2022-11-03 02:21:35,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:35,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:35,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:35,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:35,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:35,838 INFO L87 Difference]: Start difference. First operand 1003 states and 1349 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:36,129 INFO L93 Difference]: Finished difference Result 2467 states and 3528 transitions. [2022-11-03 02:21:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:21:36,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-03 02:21:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:36,131 INFO L225 Difference]: With dead ends: 2467 [2022-11-03 02:21:36,131 INFO L226 Difference]: Without dead ends: 1964 [2022-11-03 02:21:36,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:36,132 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 1325 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:36,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 2404 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-11-03 02:21:36,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1005. [2022-11-03 02:21:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 1004 states have (on average 1.345617529880478) internal successors, (1351), 1004 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1351 transitions. [2022-11-03 02:21:36,149 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1351 transitions. Word has length 298 [2022-11-03 02:21:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:36,149 INFO L495 AbstractCegarLoop]: Abstraction has 1005 states and 1351 transitions. [2022-11-03 02:21:36,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:36,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1351 transitions. [2022-11-03 02:21:36,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:21:36,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:36,152 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:36,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2022-11-03 02:21:36,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:36,375 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 808927433, now seen corresponding path program 1 times [2022-11-03 02:21:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:36,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854023594] [2022-11-03 02:21:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:36,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:36,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:36,378 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:36,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-03 02:21:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:37,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 205 conjunts are in the unsatisfiable core [2022-11-03 02:21:37,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:03,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:48,598 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-03 02:22:48,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-03 02:22:48,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:48,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854023594] [2022-11-03 02:22:48,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2022-11-03 02:22:48,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096612784] [2022-11-03 02:22:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:48,601 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:22:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:22:48,601 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:22:48,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (93)] Waiting until timeout for monitored process [2022-11-03 02:22:48,926 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.declareFun(Scriptor.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.declareFun(WrapperScript.java:137) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.declareFun(WrapperScript.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.declareFun(HistoryRecordingScript.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.declareFun(ManagedScript.java:172) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:117) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:135) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:90) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:320) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1281) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:387) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 42 more [2022-11-03 02:22:48,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986148529] [2022-11-03 02:22:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:48,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:48,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:48,934 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:48,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-11-03 02:22:49,160 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by |v_ULTIMATE.start_main_#t~nondet5#1_95| at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:135) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:90) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:320) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1281) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:387) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:22:49,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:49,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-03 02:22:49,162 ERROR L170 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2022-11-03 02:22:49,162 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-03 02:22:49,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:22:49,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (93)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:49,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:49,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:49,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67dda79-29e7-4aa5-827d-6520c95b7d7e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:22:49,790 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:49,794 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:22:49,843 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:22:49,844 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:22:49,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:22:49 BoogieIcfgContainer [2022-11-03 02:22:49,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:22:49,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:22:49,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:22:49,899 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:22:49,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:52" (3/4) ... [2022-11-03 02:22:49,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:22:49,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:22:49,904 INFO L158 Benchmark]: Toolchain (without parser) took 241330.97ms. Allocated memory was 73.4MB in the beginning and 484.4MB in the end (delta: 411.0MB). Free memory was 49.3MB in the beginning and 391.3MB in the end (delta: -341.9MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2022-11-03 02:22:49,904 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory is still 31.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:22:49,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1052.57ms. Allocated memory is still 73.4MB. Free memory was 49.2MB in the beginning and 41.0MB in the end (delta: 8.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-11-03 02:22:49,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 195.46ms. Allocated memory is still 73.4MB. Free memory was 41.0MB in the beginning and 29.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:22:49,904 INFO L158 Benchmark]: Boogie Preprocessor took 129.38ms. Allocated memory is still 73.4MB. Free memory was 29.4MB in the beginning and 37.5MB in the end (delta: -8.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-11-03 02:22:49,905 INFO L158 Benchmark]: RCFGBuilder took 2542.17ms. Allocated memory was 73.4MB in the beginning and 146.8MB in the end (delta: 73.4MB). Free memory was 37.5MB in the beginning and 104.5MB in the end (delta: -67.0MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2022-11-03 02:22:49,905 INFO L158 Benchmark]: TraceAbstraction took 237395.23ms. Allocated memory was 146.8MB in the beginning and 484.4MB in the end (delta: 337.6MB). Free memory was 104.1MB in the beginning and 392.3MB in the end (delta: -288.2MB). Peak memory consumption was 297.2MB. Max. memory is 16.1GB. [2022-11-03 02:22:49,905 INFO L158 Benchmark]: Witness Printer took 4.84ms. Allocated memory is still 484.4MB. Free memory was 392.3MB in the beginning and 391.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:22:49,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory is still 31.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1052.57ms. Allocated memory is still 73.4MB. Free memory was 49.2MB in the beginning and 41.0MB in the end (delta: 8.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 195.46ms. Allocated memory is still 73.4MB. Free memory was 41.0MB in the beginning and 29.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 129.38ms. Allocated memory is still 73.4MB. Free memory was 29.4MB in the beginning and 37.5MB in the end (delta: -8.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * RCFGBuilder took 2542.17ms. Allocated memory was 73.4MB in the beginning and 146.8MB in the end (delta: 73.4MB). Free memory was 37.5MB in the beginning and 104.5MB in the end (delta: -67.0MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. * TraceAbstraction took 237395.23ms. Allocated memory was 146.8MB in the beginning and 484.4MB in the end (delta: 337.6MB). Free memory was 104.1MB in the beginning and 392.3MB in the end (delta: -288.2MB). Peak memory consumption was 297.2MB. Max. memory is 16.1GB. * Witness Printer took 4.84ms. Allocated memory is still 484.4MB. Free memory was 392.3MB in the beginning and 391.3MB 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: unable to decide satisfiability of path constraint. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 2); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (2 - 1); [L31] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 4); [L32] const SORT_9 msb_SORT_9 = (SORT_9)1 << (4 - 1); [L34] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 3); [L35] const SORT_10 msb_SORT_10 = (SORT_10)1 << (3 - 1); [L37] const SORT_10 var_11 = 0; [L38] const SORT_1 var_14 = 0; [L39] const SORT_4 var_16 = 0; [L40] const SORT_9 var_33 = 8; [L41] const SORT_9 var_40 = 7; [L42] const SORT_4 var_52 = 1; [L43] const SORT_1 var_56 = 1; [L44] const SORT_4 var_66 = 2; [L45] const SORT_9 var_72 = 0; [L46] const SORT_4 var_79 = 3; [L47] const SORT_9 var_98 = 5; [L48] const SORT_10 var_120 = 1; [L49] const SORT_9 var_122 = 15; [L50] const SORT_9 var_150 = 6; [L51] const SORT_9 var_315 = 1; [L53] SORT_1 input_2; [L54] SORT_1 input_3; [L55] SORT_4 input_5; [L56] SORT_1 input_6; [L57] SORT_1 input_7; [L58] SORT_1 input_8; [L59] SORT_4 input_103; [L60] SORT_10 input_116; [L61] SORT_10 input_117; [L62] SORT_10 input_118; [L63] SORT_10 input_119; [L64] SORT_10 input_128; [L65] SORT_10 input_135; [L66] SORT_10 input_142; [L67] SORT_10 input_143; [L68] SORT_10 input_144; [L69] SORT_10 input_149; [L70] SORT_10 input_153; [L71] SORT_10 input_159; [L72] SORT_4 input_174; [L73] SORT_4 input_175; [L74] SORT_4 input_176; [L75] SORT_4 input_177; [L76] SORT_4 input_184; [L77] SORT_4 input_187; [L78] SORT_4 input_195; [L79] SORT_4 input_202; [L80] SORT_4 input_203; [L81] SORT_4 input_204; [L82] SORT_4 input_207; [L83] SORT_4 input_209; [L84] SORT_4 input_214; [L85] SORT_4 input_223; [L86] SORT_1 input_235; [L87] SORT_1 input_236; [L88] SORT_1 input_237; [L89] SORT_1 input_238; [L90] SORT_1 input_245; [L91] SORT_1 input_248; [L92] SORT_1 input_251; [L93] SORT_1 input_261; [L94] SORT_4 input_276; [L95] SORT_4 input_280; [L96] SORT_4 input_281; [L97] SORT_4 input_282; [L98] SORT_4 input_283; [L99] SORT_4 input_287; [L100] SORT_4 input_292; [L101] SORT_4 input_301; [L102] SORT_9 input_311; [L103] SORT_9 input_312; [L104] SORT_9 input_313; [L105] SORT_9 input_314; [L106] SORT_9 input_320; [L107] SORT_9 input_326; [L108] SORT_9 input_333; [L109] SORT_9 input_334; [L110] SORT_9 input_335; [L111] SORT_9 input_338; [L112] SORT_9 input_340; [L113] SORT_9 input_344; [L114] SORT_9 input_345; [L115] SORT_9 input_349; [L116] SORT_9 input_354; [L117] SORT_9 input_372; [L118] SORT_9 input_373; [L119] SORT_9 input_374; [L120] SORT_9 input_375; [L121] SORT_9 input_380; [L122] SORT_9 input_383; [L123] SORT_9 input_391; [L124] SORT_9 input_398; [L125] SORT_9 input_399; [L126] SORT_9 input_400; [L127] SORT_9 input_403; [L128] SORT_9 input_405; [L129] SORT_9 input_410; [L130] SORT_9 input_419; [L131] SORT_9 input_430; [L132] SORT_9 input_431; [L133] SORT_9 input_432; [L134] SORT_9 input_433; [L135] SORT_9 input_438; [L136] SORT_9 input_441; [L137] SORT_9 input_444; [L138] SORT_9 input_454; [L140] SORT_10 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L141] SORT_4 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L142] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L143] SORT_4 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L144] SORT_9 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L145] SORT_4 state_96 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L146] SORT_9 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L147] SORT_9 state_113 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L149] SORT_10 init_13_arg_1 = var_11; [L150] state_12 = init_13_arg_1 [L151] SORT_4 init_18_arg_1 = var_16; [L152] state_17 = init_18_arg_1 [L153] SORT_1 init_23_arg_1 = var_14; [L154] state_22 = init_23_arg_1 [L155] SORT_4 init_51_arg_1 = var_16; [L156] state_50 = init_51_arg_1 [L157] SORT_9 init_74_arg_1 = var_72; [L158] state_73 = init_74_arg_1 [L159] SORT_9 init_112_arg_1 = var_72; [L160] state_111 = init_112_arg_1 [L161] SORT_9 init_114_arg_1 = var_72; [L162] state_113 = init_114_arg_1 [L165] input_2 = __VERIFIER_nondet_uchar() [L166] input_2 = input_2 & mask_SORT_1 [L167] input_3 = __VERIFIER_nondet_uchar() [L168] input_5 = __VERIFIER_nondet_uchar() [L169] input_6 = __VERIFIER_nondet_uchar() [L170] input_6 = input_6 & mask_SORT_1 [L171] input_7 = __VERIFIER_nondet_uchar() [L172] input_7 = input_7 & mask_SORT_1 [L173] input_8 = __VERIFIER_nondet_uchar() [L174] input_8 = input_8 & mask_SORT_1 [L175] input_103 = __VERIFIER_nondet_uchar() [L176] input_116 = __VERIFIER_nondet_uchar() [L177] input_117 = __VERIFIER_nondet_uchar() [L178] input_118 = __VERIFIER_nondet_uchar() [L179] input_119 = __VERIFIER_nondet_uchar() [L180] input_128 = __VERIFIER_nondet_uchar() [L181] input_135 = __VERIFIER_nondet_uchar() [L182] input_142 = __VERIFIER_nondet_uchar() [L183] input_143 = __VERIFIER_nondet_uchar() [L184] input_144 = __VERIFIER_nondet_uchar() [L185] input_149 = __VERIFIER_nondet_uchar() [L186] input_153 = __VERIFIER_nondet_uchar() [L187] input_159 = __VERIFIER_nondet_uchar() [L188] input_174 = __VERIFIER_nondet_uchar() [L189] input_175 = __VERIFIER_nondet_uchar() [L190] input_176 = __VERIFIER_nondet_uchar() [L191] input_177 = __VERIFIER_nondet_uchar() [L192] input_184 = __VERIFIER_nondet_uchar() [L193] input_187 = __VERIFIER_nondet_uchar() [L194] input_195 = __VERIFIER_nondet_uchar() [L195] input_202 = __VERIFIER_nondet_uchar() [L196] input_203 = __VERIFIER_nondet_uchar() [L197] input_204 = __VERIFIER_nondet_uchar() [L198] input_207 = __VERIFIER_nondet_uchar() [L199] input_209 = __VERIFIER_nondet_uchar() [L200] input_214 = __VERIFIER_nondet_uchar() [L201] input_223 = __VERIFIER_nondet_uchar() [L202] input_235 = __VERIFIER_nondet_uchar() [L203] input_236 = __VERIFIER_nondet_uchar() [L204] input_237 = __VERIFIER_nondet_uchar() [L205] input_238 = __VERIFIER_nondet_uchar() [L206] input_245 = __VERIFIER_nondet_uchar() [L207] input_248 = __VERIFIER_nondet_uchar() [L208] input_251 = __VERIFIER_nondet_uchar() [L209] input_261 = __VERIFIER_nondet_uchar() [L210] input_276 = __VERIFIER_nondet_uchar() [L211] input_280 = __VERIFIER_nondet_uchar() [L212] input_281 = __VERIFIER_nondet_uchar() [L213] input_282 = __VERIFIER_nondet_uchar() [L214] input_283 = __VERIFIER_nondet_uchar() [L215] input_287 = __VERIFIER_nondet_uchar() [L216] input_292 = __VERIFIER_nondet_uchar() [L217] input_301 = __VERIFIER_nondet_uchar() [L218] input_311 = __VERIFIER_nondet_uchar() [L219] input_312 = __VERIFIER_nondet_uchar() [L220] input_313 = __VERIFIER_nondet_uchar() [L221] input_314 = __VERIFIER_nondet_uchar() [L222] input_320 = __VERIFIER_nondet_uchar() [L223] input_326 = __VERIFIER_nondet_uchar() [L224] input_333 = __VERIFIER_nondet_uchar() [L225] input_334 = __VERIFIER_nondet_uchar() [L226] input_335 = __VERIFIER_nondet_uchar() [L227] input_338 = __VERIFIER_nondet_uchar() [L228] input_340 = __VERIFIER_nondet_uchar() [L229] input_344 = __VERIFIER_nondet_uchar() [L230] input_345 = __VERIFIER_nondet_uchar() [L231] input_349 = __VERIFIER_nondet_uchar() [L232] input_354 = __VERIFIER_nondet_uchar() [L233] input_372 = __VERIFIER_nondet_uchar() [L234] input_373 = __VERIFIER_nondet_uchar() [L235] input_374 = __VERIFIER_nondet_uchar() [L236] input_375 = __VERIFIER_nondet_uchar() [L237] input_380 = __VERIFIER_nondet_uchar() [L238] input_383 = __VERIFIER_nondet_uchar() [L239] input_391 = __VERIFIER_nondet_uchar() [L240] input_398 = __VERIFIER_nondet_uchar() [L241] input_399 = __VERIFIER_nondet_uchar() [L242] input_400 = __VERIFIER_nondet_uchar() [L243] input_403 = __VERIFIER_nondet_uchar() [L244] input_405 = __VERIFIER_nondet_uchar() [L245] input_410 = __VERIFIER_nondet_uchar() [L246] input_419 = __VERIFIER_nondet_uchar() [L247] input_430 = __VERIFIER_nondet_uchar() [L248] input_431 = __VERIFIER_nondet_uchar() [L249] input_432 = __VERIFIER_nondet_uchar() [L250] input_433 = __VERIFIER_nondet_uchar() [L251] input_438 = __VERIFIER_nondet_uchar() [L252] input_441 = __VERIFIER_nondet_uchar() [L253] input_444 = __VERIFIER_nondet_uchar() [L254] input_454 = __VERIFIER_nondet_uchar() [L257] SORT_1 var_15_arg_0 = var_14; [L258] SORT_10 var_15_arg_1 = state_12; [L259] SORT_9 var_15 = ((SORT_9)var_15_arg_0 << 3) | var_15_arg_1; [L260] SORT_4 var_19_arg_0 = state_17; [L261] SORT_1 var_19_arg_1 = var_14; [L262] SORT_10 var_19 = ((SORT_10)var_19_arg_0 << 1) | var_19_arg_1; [L263] var_19 = var_19 & mask_SORT_10 [L264] SORT_1 var_20_arg_0 = var_14; [L265] SORT_10 var_20_arg_1 = var_19; [L266] SORT_9 var_20 = ((SORT_9)var_20_arg_0 << 3) | var_20_arg_1; [L267] SORT_9 var_21_arg_0 = var_15; [L268] SORT_9 var_21_arg_1 = var_20; [L269] SORT_9 var_21 = var_21_arg_0 + var_21_arg_1; [L270] SORT_1 var_24_arg_0 = var_14; [L271] SORT_1 var_24_arg_1 = state_22; [L272] SORT_4 var_24 = ((SORT_4)var_24_arg_0 << 1) | var_24_arg_1; [L273] var_24 = var_24 & mask_SORT_4 [L274] SORT_1 var_25_arg_0 = state_22; [L275] SORT_4 var_25_arg_1 = var_24; [L276] SORT_10 var_25 = ((SORT_10)var_25_arg_0 << 2) | var_25_arg_1; [L277] var_25 = var_25 & mask_SORT_10 [L278] SORT_1 var_26_arg_0 = var_14; [L279] SORT_10 var_26_arg_1 = var_25; [L280] SORT_9 var_26 = ((SORT_9)var_26_arg_0 << 3) | var_26_arg_1; [L281] SORT_9 var_27_arg_0 = var_21; [L282] SORT_9 var_27_arg_1 = var_26; [L283] SORT_9 var_27 = var_27_arg_0 + var_27_arg_1; [L284] var_27 = var_27 & mask_SORT_9 [L285] SORT_9 var_28_arg_0 = var_27; [L286] SORT_1 var_28 = var_28_arg_0 >> 3; [L287] var_28 = var_28 & mask_SORT_1 [L288] SORT_1 var_29_arg_0 = var_28; [L289] SORT_1 var_29_arg_1 = var_14; [L290] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L291] SORT_9 var_30_arg_0 = var_27; [L292] SORT_4 var_30 = var_30_arg_0 >> 1; [L293] var_30 = var_30 & mask_SORT_4 [L294] SORT_4 var_31_arg_0 = var_30; [L295] SORT_4 var_31_arg_1 = var_16; [L296] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L297] SORT_1 var_32_arg_0 = var_29; [L298] SORT_1 var_32_arg_1 = var_31; [L299] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L300] SORT_9 var_34_arg_0 = var_27; [L301] SORT_9 var_34_arg_1 = var_33; [L302] SORT_1 var_34 = var_34_arg_0 == var_34_arg_1; [L303] SORT_1 var_35_arg_0 = var_34; [L304] SORT_1 var_35 = ~var_35_arg_0; [L305] SORT_10 var_36_arg_0 = state_12; [L306] SORT_10 var_36_arg_1 = var_11; [L307] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L308] SORT_1 var_37_arg_0 = var_36; [L309] SORT_1 var_37 = ~var_37_arg_0; [L310] SORT_1 var_38_arg_0 = var_35; [L311] SORT_1 var_38_arg_1 = var_37; [L312] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L313] SORT_1 var_39_arg_0 = var_32; [L314] SORT_1 var_39_arg_1 = var_38; [L315] SORT_1 var_39 = var_39_arg_0 & var_39_arg_1; [L316] SORT_9 var_41_arg_0 = var_27; [L317] SORT_9 var_41_arg_1 = var_40; [L318] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L319] SORT_1 var_42_arg_0 = var_41; [L320] SORT_1 var_42 = ~var_42_arg_0; [L321] SORT_10 var_43_arg_0 = state_12; [L322] SORT_10 var_43_arg_1 = var_11; [L323] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L324] SORT_1 var_44_arg_0 = var_43; [L325] SORT_1 var_44 = ~var_44_arg_0; [L326] SORT_4 var_45_arg_0 = state_17; [L327] SORT_4 var_45_arg_1 = var_16; [L328] SORT_1 var_45 = var_45_arg_0 == var_45_arg_1; [L329] SORT_1 var_46_arg_0 = var_45; [L330] SORT_1 var_46 = ~var_46_arg_0; [L331] SORT_1 var_47_arg_0 = var_44; [L332] SORT_1 var_47_arg_1 = var_46; [L333] SORT_1 var_47 = var_47_arg_0 | var_47_arg_1; [L334] SORT_1 var_48_arg_0 = var_42; [L335] SORT_1 var_48_arg_1 = var_47; [L336] SORT_1 var_48 = var_48_arg_0 | var_48_arg_1; [L337] SORT_1 var_49_arg_0 = var_39; [L338] SORT_1 var_49_arg_1 = var_48; [L339] SORT_1 var_49 = var_49_arg_0 & var_49_arg_1; [L340] SORT_4 var_53_arg_0 = state_50; [L341] SORT_4 var_53_arg_1 = var_52; [L342] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L343] SORT_9 var_54_arg_0 = var_27; [L344] SORT_9 var_54_arg_1 = var_40; [L345] SORT_1 var_54 = var_54_arg_0 == var_54_arg_1; [L346] SORT_1 var_55_arg_0 = var_53; [L347] SORT_1 var_55_arg_1 = var_54; [L348] SORT_1 var_55 = var_55_arg_0 & var_55_arg_1; [L349] SORT_1 var_57_arg_0 = var_28; [L350] SORT_1 var_57_arg_1 = var_56; [L351] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L352] SORT_1 var_58_arg_0 = var_55; [L353] SORT_1 var_58_arg_1 = var_57; [L354] SORT_1 var_58 = var_58_arg_0 | var_58_arg_1; [L355] SORT_1 var_59_arg_0 = var_58; [L356] SORT_1 var_59 = ~var_59_arg_0; [L357] SORT_10 var_60_arg_0 = state_12; [L358] SORT_10 var_60_arg_1 = var_11; [L359] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L360] SORT_4 var_61_arg_0 = state_17; [L361] SORT_4 var_61_arg_1 = var_16; [L362] SORT_1 var_61 = var_61_arg_0 == var_61_arg_1; [L363] SORT_1 var_62_arg_0 = var_60; [L364] SORT_1 var_62_arg_1 = var_61; [L365] SORT_1 var_62 = var_62_arg_0 & var_62_arg_1; [L366] SORT_1 var_63_arg_0 = var_62; [L367] SORT_1 var_63 = ~var_63_arg_0; [L368] SORT_1 var_64_arg_0 = var_59; [L369] SORT_1 var_64_arg_1 = var_63; [L370] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L371] SORT_1 var_65_arg_0 = var_49; [L372] SORT_1 var_65_arg_1 = var_64; [L373] SORT_1 var_65 = var_65_arg_0 & var_65_arg_1; [L374] SORT_4 var_67_arg_0 = state_50; [L375] SORT_4 var_67_arg_1 = var_66; [L376] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L377] SORT_1 var_68_arg_0 = var_67; [L378] SORT_1 var_68 = ~var_68_arg_0; [L379] SORT_1 var_69_arg_0 = state_22; [L380] SORT_1 var_69_arg_1 = var_14; [L381] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L382] SORT_10 var_70_arg_0 = state_12; [L383] SORT_10 var_70_arg_1 = var_11; [L384] SORT_1 var_70 = var_70_arg_0 == var_70_arg_1; [L385] SORT_1 var_71_arg_0 = var_69; [L386] SORT_1 var_71_arg_1 = var_70; [L387] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L388] SORT_9 var_75_arg_0 = state_73; [L389] SORT_9 var_75_arg_1 = var_72; [L390] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L391] SORT_1 var_76_arg_0 = var_71; [L392] SORT_1 var_76_arg_1 = var_75; [L393] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L394] SORT_1 var_77_arg_0 = var_68; [L395] SORT_1 var_77_arg_1 = var_76; [L396] SORT_1 var_77 = var_77_arg_0 | var_77_arg_1; [L397] SORT_1 var_78_arg_0 = var_65; [L398] SORT_1 var_78_arg_1 = var_77; [L399] SORT_1 var_78 = var_78_arg_0 & var_78_arg_1; [L400] SORT_4 var_80_arg_0 = state_50; [L401] SORT_4 var_80_arg_1 = var_79; [L402] SORT_1 var_80 = var_80_arg_0 == var_80_arg_1; [L403] SORT_1 var_81_arg_0 = var_80; [L404] SORT_1 var_81 = ~var_81_arg_0; [L405] SORT_9 var_82_arg_0 = var_27; [L406] SORT_4 var_82 = var_82_arg_0 >> 2; [L407] var_82 = var_82 & mask_SORT_4 [L408] SORT_4 var_83_arg_0 = var_82; [L409] SORT_4 var_83_arg_1 = var_52; [L410] SORT_1 var_83 = var_83_arg_0 == var_83_arg_1; [L411] SORT_9 var_84_arg_0 = var_27; [L412] SORT_4 var_84 = var_84_arg_0 >> 0; [L413] var_84 = var_84 & mask_SORT_4 [L414] SORT_4 var_85_arg_0 = var_84; [L415] SORT_4 var_85_arg_1 = var_52; [L416] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L417] SORT_4 var_86_arg_0 = var_84; [L418] SORT_4 var_86_arg_1 = var_66; [L419] SORT_1 var_86 = var_86_arg_0 == var_86_arg_1; [L420] SORT_1 var_87_arg_0 = var_85; [L421] SORT_1 var_87_arg_1 = var_86; [L422] SORT_1 var_87 = var_87_arg_0 | var_87_arg_1; [L423] SORT_1 var_88_arg_0 = var_83; [L424] SORT_1 var_88_arg_1 = var_87; [L425] SORT_1 var_88 = var_88_arg_0 & var_88_arg_1; [L426] SORT_1 var_89_arg_0 = var_81; [L427] SORT_1 var_89_arg_1 = var_88; [L428] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L429] SORT_1 var_90_arg_0 = var_78; [L430] SORT_1 var_90_arg_1 = var_89; [L431] SORT_1 var_90 = var_90_arg_0 & var_90_arg_1; [L432] SORT_1 var_93_arg_0 = var_90; [L433] SORT_1 var_93 = ~var_93_arg_0; [L434] SORT_1 var_94_arg_0 = var_56; [L435] SORT_1 var_94_arg_1 = var_93; [L436] SORT_1 var_94 = var_94_arg_0 & var_94_arg_1; [L437] var_94 = var_94 & mask_SORT_1 [L438] SORT_1 bad_95_arg_0 = var_94; [L439] CALL __VERIFIER_assert(!(bad_95_arg_0)) [L20] COND FALSE !(!(cond)) [L439] RET __VERIFIER_assert(!(bad_95_arg_0)) [L441] SORT_4 var_170_arg_0 = state_50; [L442] SORT_4 var_170_arg_1 = var_79; [L443] SORT_1 var_170 = var_170_arg_0 == var_170_arg_1; [L444] SORT_4 var_168_arg_0 = state_50; [L445] SORT_4 var_168_arg_1 = var_66; [L446] SORT_1 var_168 = var_168_arg_0 == var_168_arg_1; [L447] SORT_1 var_171_arg_0 = var_170; [L448] SORT_1 var_171_arg_1 = var_168; [L449] SORT_1 var_171 = var_171_arg_0 | var_171_arg_1; [L450] var_171 = var_171 & mask_SORT_1 [L451] SORT_1 var_169_arg_0 = var_168; [L452] SORT_10 var_169_arg_1 = state_12; [L453] SORT_10 var_169_arg_2 = var_11; [L454] EXPR var_169_arg_0 ? var_169_arg_1 : var_169_arg_2 [L454] SORT_10 var_169 = var_169_arg_0 ? var_169_arg_1 : var_169_arg_2; [L455] SORT_4 var_166_arg_0 = state_50; [L456] SORT_4 var_166_arg_1 = var_52; [L457] SORT_1 var_166 = var_166_arg_0 == var_166_arg_1; [L458] SORT_4 var_164_arg_0 = state_50; [L459] SORT_4 var_164_arg_1 = var_52; [L460] SORT_1 var_164 = var_164_arg_0 == var_164_arg_1; [L461] SORT_9 var_154_arg_0 = var_27; [L462] SORT_9 var_154_arg_1 = var_98; [L463] SORT_1 var_154 = var_154_arg_0 == var_154_arg_1; [L464] SORT_4 var_161_arg_0 = state_50; [L465] SORT_4 var_161_arg_1 = var_52; [L466] SORT_1 var_161 = var_161_arg_0 == var_161_arg_1; [L467] SORT_9 var_151_arg_0 = var_27; [L468] SORT_9 var_151_arg_1 = var_150; [L469] SORT_1 var_151 = var_151_arg_0 == var_151_arg_1; [L470] SORT_4 var_156_arg_0 = state_50; [L471] SORT_4 var_156_arg_1 = var_52; [L472] SORT_1 var_156 = var_156_arg_0 == var_156_arg_1; [L473] SORT_4 var_147_arg_0 = state_17; [L474] SORT_4 var_147_arg_1 = var_16; [L475] SORT_1 var_147 = var_147_arg_0 > var_147_arg_1; [L476] SORT_4 var_145_arg_0 = var_52; [L477] var_145_arg_0 = var_145_arg_0 & mask_SORT_4 [L478] SORT_10 var_145 = var_145_arg_0; [L479] SORT_10 var_146_arg_0 = state_12; [L480] SORT_10 var_146_arg_1 = var_145; [L481] SORT_10 var_146 = var_146_arg_0 - var_146_arg_1; [L482] SORT_1 var_148_arg_0 = var_147; [L483] SORT_10 var_148_arg_1 = state_12; [L484] SORT_10 var_148_arg_2 = var_146; [L485] EXPR var_148_arg_0 ? var_148_arg_1 : var_148_arg_2 [L485] SORT_10 var_148 = var_148_arg_0 ? var_148_arg_1 : var_148_arg_2; [L486] SORT_1 var_152_arg_0 = var_151; [L487] SORT_10 var_152_arg_1 = input_149; [L488] SORT_10 var_152_arg_2 = var_148; [L489] EXPR var_152_arg_0 ? var_152_arg_1 : var_152_arg_2 [L489] SORT_10 var_152 = var_152_arg_0 ? var_152_arg_1 : var_152_arg_2; [L490] SORT_1 var_155_arg_0 = var_154; [L491] SORT_10 var_155_arg_1 = input_153; [L492] SORT_10 var_155_arg_2 = var_152; [L493] EXPR var_155_arg_0 ? var_155_arg_1 : var_155_arg_2 [L493] SORT_10 var_155 = var_155_arg_0 ? var_155_arg_1 : var_155_arg_2; [L494] SORT_1 var_157_arg_0 = var_156; [L495] SORT_10 var_157_arg_1 = var_155; [L496] SORT_10 var_157_arg_2 = input_144; [L497] EXPR var_157_arg_0 ? var_157_arg_1 : var_157_arg_2 [L497] SORT_10 var_157 = var_157_arg_0 ? var_157_arg_1 : var_157_arg_2; [L498] SORT_1 var_158_arg_0 = var_151; [L499] SORT_10 var_158_arg_1 = state_12; [L500] SORT_10 var_158_arg_2 = var_157; [L501] EXPR var_158_arg_0 ? var_158_arg_1 : var_158_arg_2 [L501] SORT_10 var_158 = var_158_arg_0 ? var_158_arg_1 : var_158_arg_2; [L502] SORT_1 var_160_arg_0 = var_154; [L503] SORT_10 var_160_arg_1 = input_159; [L504] SORT_10 var_160_arg_2 = var_158; [L505] EXPR var_160_arg_0 ? var_160_arg_1 : var_160_arg_2 [L505] SORT_10 var_160 = var_160_arg_0 ? var_160_arg_1 : var_160_arg_2; [L506] SORT_1 var_162_arg_0 = var_161; [L507] SORT_10 var_162_arg_1 = var_160; [L508] SORT_10 var_162_arg_2 = input_143; [L509] EXPR var_162_arg_0 ? var_162_arg_1 : var_162_arg_2 [L509] SORT_10 var_162 = var_162_arg_0 ? var_162_arg_1 : var_162_arg_2; [L510] SORT_1 var_163_arg_0 = var_154; [L511] SORT_10 var_163_arg_1 = state_12; [L512] SORT_10 var_163_arg_2 = var_162; [L513] EXPR var_163_arg_0 ? var_163_arg_1 : var_163_arg_2 [L513] SORT_10 var_163 = var_163_arg_0 ? var_163_arg_1 : var_163_arg_2; [L514] SORT_1 var_165_arg_0 = var_164; [L515] SORT_10 var_165_arg_1 = var_163; [L516] SORT_10 var_165_arg_2 = input_142; [L517] EXPR var_165_arg_0 ? var_165_arg_1 : var_165_arg_2 [L517] SORT_10 var_165 = var_165_arg_0 ? var_165_arg_1 : var_165_arg_2; [L518] SORT_4 var_140_arg_0 = state_50; [L519] SORT_4 var_140_arg_1 = var_16; [L520] SORT_1 var_140 = var_140_arg_0 == var_140_arg_1; [L521] SORT_9 var_129_arg_0 = var_27; [L522] SORT_9 var_129_arg_1 = var_98; [L523] SORT_1 var_129 = var_129_arg_0 >= var_129_arg_1; [L524] SORT_4 var_137_arg_0 = state_50; [L525] SORT_4 var_137_arg_1 = var_16; [L526] SORT_1 var_137 = var_137_arg_0 == var_137_arg_1; [L527] SORT_1 var_125_arg_0 = var_14; [L528] SORT_1 var_125_arg_1 = input_7; [L529] SORT_4 var_125 = ((SORT_4)var_125_arg_0 << 1) | var_125_arg_1; [L530] var_125 = var_125 & mask_SORT_4 [L531] SORT_4 var_133_arg_0 = state_96; [L532] SORT_4 var_133_arg_1 = var_125; [L533] SORT_1 var_133 = var_133_arg_0 == var_133_arg_1; [L534] SORT_4 var_131_arg_0 = state_50; [L535] SORT_4 var_131_arg_1 = var_16; [L536] SORT_1 var_131 = var_131_arg_0 == var_131_arg_1; [L537] SORT_4 var_126_arg_0 = state_96; [L538] SORT_4 var_126_arg_1 = var_125; [L539] SORT_1 var_126 = var_126_arg_0 == var_126_arg_1; [L540] SORT_9 var_123_arg_0 = state_73; [L541] SORT_9 var_123_arg_1 = var_122; [L542] SORT_1 var_123 = var_123_arg_0 == var_123_arg_1; [L543] SORT_10 var_121_arg_0 = state_12; [L544] SORT_10 var_121_arg_1 = var_120; [L545] SORT_10 var_121 = var_121_arg_0 + var_121_arg_1; [L546] SORT_1 var_124_arg_0 = var_123; [L547] SORT_10 var_124_arg_1 = state_12; [L548] SORT_10 var_124_arg_2 = var_121; [L549] EXPR var_124_arg_0 ? var_124_arg_1 : var_124_arg_2 [L549] SORT_10 var_124 = var_124_arg_0 ? var_124_arg_1 : var_124_arg_2; [L550] SORT_1 var_127_arg_0 = var_126; [L551] SORT_10 var_127_arg_1 = var_124; [L552] SORT_10 var_127_arg_2 = input_119; [L553] EXPR var_127_arg_0 ? var_127_arg_1 : var_127_arg_2 [L553] SORT_10 var_127 = var_127_arg_0 ? var_127_arg_1 : var_127_arg_2; [L554] SORT_1 var_130_arg_0 = var_129; [L555] SORT_10 var_130_arg_1 = input_128; [L556] SORT_10 var_130_arg_2 = var_127; [L557] EXPR var_130_arg_0 ? var_130_arg_1 : var_130_arg_2 [L557] SORT_10 var_130 = var_130_arg_0 ? var_130_arg_1 : var_130_arg_2; [L558] SORT_1 var_132_arg_0 = var_131; [L559] SORT_10 var_132_arg_1 = var_130; [L560] SORT_10 var_132_arg_2 = input_118; [L561] EXPR var_132_arg_0 ? var_132_arg_1 : var_132_arg_2 [L561] SORT_10 var_132 = var_132_arg_0 ? var_132_arg_1 : var_132_arg_2; [L562] SORT_1 var_134_arg_0 = var_133; [L563] SORT_10 var_134_arg_1 = var_132; [L564] SORT_10 var_134_arg_2 = state_12; [L565] EXPR var_134_arg_0 ? var_134_arg_1 : var_134_arg_2 [L565] SORT_10 var_134 = var_134_arg_0 ? var_134_arg_1 : var_134_arg_2; [L566] SORT_1 var_136_arg_0 = var_129; [L567] SORT_10 var_136_arg_1 = input_135; [L568] SORT_10 var_136_arg_2 = var_134; [L569] EXPR var_136_arg_0 ? var_136_arg_1 : var_136_arg_2 [L569] SORT_10 var_136 = var_136_arg_0 ? var_136_arg_1 : var_136_arg_2; [L570] SORT_1 var_138_arg_0 = var_137; [L571] SORT_10 var_138_arg_1 = var_136; [L572] SORT_10 var_138_arg_2 = input_117; [L573] EXPR var_138_arg_0 ? var_138_arg_1 : var_138_arg_2 [L573] SORT_10 var_138 = var_138_arg_0 ? var_138_arg_1 : var_138_arg_2; [L574] SORT_1 var_139_arg_0 = var_129; [L575] SORT_10 var_139_arg_1 = state_12; [L576] SORT_10 var_139_arg_2 = var_138; [L577] EXPR var_139_arg_0 ? var_139_arg_1 : var_139_arg_2 [L577] SORT_10 var_139 = var_139_arg_0 ? var_139_arg_1 : var_139_arg_2; [L578] SORT_1 var_141_arg_0 = var_140; [L579] SORT_10 var_141_arg_1 = var_139; [L580] SORT_10 var_141_arg_2 = input_116; [L581] EXPR var_141_arg_0 ? var_141_arg_1 : var_141_arg_2 [L581] SORT_10 var_141 = var_141_arg_0 ? var_141_arg_1 : var_141_arg_2; [L582] SORT_1 var_167_arg_0 = var_166; [L583] SORT_10 var_167_arg_1 = var_165; [L584] SORT_10 var_167_arg_2 = var_141; [L585] EXPR var_167_arg_0 ? var_167_arg_1 : var_167_arg_2 [L585] SORT_10 var_167 = var_167_arg_0 ? var_167_arg_1 : var_167_arg_2; [L586] SORT_1 var_172_arg_0 = var_171; [L587] SORT_10 var_172_arg_1 = var_169; [L588] SORT_10 var_172_arg_2 = var_167; [L589] EXPR var_172_arg_0 ? var_172_arg_1 : var_172_arg_2 [L589] SORT_10 var_172 = var_172_arg_0 ? var_172_arg_1 : var_172_arg_2; [L590] var_172 = var_172 & mask_SORT_10 [L591] SORT_10 next_173_arg_1 = var_172; [L592] SORT_4 var_231_arg_0 = state_50; [L593] SORT_4 var_231_arg_1 = var_79; [L594] SORT_1 var_231 = var_231_arg_0 == var_231_arg_1; [L595] SORT_4 var_229_arg_0 = state_50; [L596] SORT_4 var_229_arg_1 = var_66; [L597] SORT_1 var_229 = var_229_arg_0 == var_229_arg_1; [L598] SORT_1 var_232_arg_0 = var_231; [L599] SORT_1 var_232_arg_1 = var_229; [L600] SORT_1 var_232 = var_232_arg_0 | var_232_arg_1; [L601] var_232 = var_232 & mask_SORT_1 [L602] SORT_4 var_227_arg_0 = state_50; [L603] SORT_4 var_227_arg_1 = var_66; [L604] SORT_1 var_227 = var_227_arg_0 == var_227_arg_1; [L605] SORT_4 var_225_arg_0 = state_17; [L606] SORT_4 var_225_arg_1 = var_16; [L607] SORT_1 var_225 = var_225_arg_0 > var_225_arg_1; [L608] SORT_4 var_224_arg_0 = state_17; [L609] SORT_4 var_224_arg_1 = var_52; [L610] SORT_4 var_224 = var_224_arg_0 - var_224_arg_1; [L611] SORT_1 var_226_arg_0 = var_225; [L612] SORT_4 var_226_arg_1 = var_224; [L613] SORT_4 var_226_arg_2 = state_17; [L614] EXPR var_226_arg_0 ? var_226_arg_1 : var_226_arg_2 [L614] SORT_4 var_226 = var_226_arg_0 ? var_226_arg_1 : var_226_arg_2; [L615] SORT_1 var_228_arg_0 = var_227; [L616] SORT_4 var_228_arg_1 = var_226; [L617] SORT_4 var_228_arg_2 = input_223; [L618] EXPR var_228_arg_0 ? var_228_arg_1 : var_228_arg_2 [L618] SORT_4 var_228 = var_228_arg_0 ? var_228_arg_1 : var_228_arg_2; [L619] SORT_1 var_230_arg_0 = var_229; [L620] SORT_4 var_230_arg_1 = var_228; [L621] SORT_4 var_230_arg_2 = var_16; [L622] EXPR var_230_arg_0 ? var_230_arg_1 : var_230_arg_2 [L622] SORT_4 var_230 = var_230_arg_0 ? var_230_arg_1 : var_230_arg_2; [L623] SORT_4 var_221_arg_0 = state_50; [L624] SORT_4 var_221_arg_1 = var_52; [L625] SORT_1 var_221 = var_221_arg_0 == var_221_arg_1; [L626] SORT_4 var_219_arg_0 = state_50; [L627] SORT_4 var_219_arg_1 = var_52; [L628] SORT_1 var_219 = var_219_arg_0 == var_219_arg_1; [L629] SORT_4 var_216_arg_0 = state_50; [L630] SORT_4 var_216_arg_1 = var_52; [L631] SORT_1 var_216 = var_216_arg_0 == var_216_arg_1; [L632] SORT_4 var_211_arg_0 = state_50; [L633] SORT_4 var_211_arg_1 = var_52; [L634] SORT_1 var_211 = var_211_arg_0 == var_211_arg_1; [L635] SORT_4 var_205_arg_0 = state_17; [L636] SORT_4 var_205_arg_1 = var_52; [L637] SORT_4 var_205 = var_205_arg_0 - var_205_arg_1; [L638] SORT_1 var_206_arg_0 = var_147; [L639] SORT_4 var_206_arg_1 = var_205; [L640] SORT_4 var_206_arg_2 = state_17; [L641] EXPR var_206_arg_0 ? var_206_arg_1 : var_206_arg_2 [L641] SORT_4 var_206 = var_206_arg_0 ? var_206_arg_1 : var_206_arg_2; [L642] SORT_1 var_208_arg_0 = var_151; [L643] SORT_4 var_208_arg_1 = input_207; [L644] SORT_4 var_208_arg_2 = var_206; [L645] EXPR var_208_arg_0 ? var_208_arg_1 : var_208_arg_2 [L645] SORT_4 var_208 = var_208_arg_0 ? var_208_arg_1 : var_208_arg_2; [L646] SORT_1 var_210_arg_0 = var_154; [L647] SORT_4 var_210_arg_1 = input_209; [L648] SORT_4 var_210_arg_2 = var_208; [L649] EXPR var_210_arg_0 ? var_210_arg_1 : var_210_arg_2 [L649] SORT_4 var_210 = var_210_arg_0 ? var_210_arg_1 : var_210_arg_2; [L650] SORT_1 var_212_arg_0 = var_211; [L651] SORT_4 var_212_arg_1 = var_210; [L652] SORT_4 var_212_arg_2 = input_204; [L653] EXPR var_212_arg_0 ? var_212_arg_1 : var_212_arg_2 [L653] SORT_4 var_212 = var_212_arg_0 ? var_212_arg_1 : var_212_arg_2; [L654] SORT_1 var_213_arg_0 = var_151; [L655] SORT_4 var_213_arg_1 = state_17; [L656] SORT_4 var_213_arg_2 = var_212; [L657] EXPR var_213_arg_0 ? var_213_arg_1 : var_213_arg_2 [L657] SORT_4 var_213 = var_213_arg_0 ? var_213_arg_1 : var_213_arg_2; [L658] SORT_1 var_215_arg_0 = var_154; [L659] SORT_4 var_215_arg_1 = input_214; [L660] SORT_4 var_215_arg_2 = var_213; [L661] EXPR var_215_arg_0 ? var_215_arg_1 : var_215_arg_2 [L661] SORT_4 var_215 = var_215_arg_0 ? var_215_arg_1 : var_215_arg_2; [L662] SORT_1 var_217_arg_0 = var_216; [L663] SORT_4 var_217_arg_1 = var_215; [L664] SORT_4 var_217_arg_2 = input_203; [L665] EXPR var_217_arg_0 ? var_217_arg_1 : var_217_arg_2 [L665] SORT_4 var_217 = var_217_arg_0 ? var_217_arg_1 : var_217_arg_2; [L666] SORT_1 var_218_arg_0 = var_154; [L667] SORT_4 var_218_arg_1 = state_17; [L668] SORT_4 var_218_arg_2 = var_217; [L669] EXPR var_218_arg_0 ? var_218_arg_1 : var_218_arg_2 [L669] SORT_4 var_218 = var_218_arg_0 ? var_218_arg_1 : var_218_arg_2; [L670] SORT_1 var_220_arg_0 = var_219; [L671] SORT_4 var_220_arg_1 = var_218; [L672] SORT_4 var_220_arg_2 = input_202; [L673] EXPR var_220_arg_0 ? var_220_arg_1 : var_220_arg_2 [L673] SORT_4 var_220 = var_220_arg_0 ? var_220_arg_1 : var_220_arg_2; [L674] SORT_4 var_200_arg_0 = state_50; [L675] SORT_4 var_200_arg_1 = var_16; [L676] SORT_1 var_200 = var_200_arg_0 == var_200_arg_1; [L677] SORT_4 var_197_arg_0 = state_50; [L678] SORT_4 var_197_arg_1 = var_16; [L679] SORT_1 var_197 = var_197_arg_0 == var_197_arg_1; [L680] SORT_4 var_193_arg_0 = state_96; [L681] SORT_4 var_193_arg_1 = var_125; [L682] SORT_1 var_193 = var_193_arg_0 == var_193_arg_1; [L683] SORT_1 var_181_arg_0 = var_14; [L684] SORT_1 var_181_arg_1 = input_6; [L685] SORT_4 var_181 = ((SORT_4)var_181_arg_0 << 1) | var_181_arg_1; [L686] var_181 = var_181 & mask_SORT_4 [L687] SORT_4 var_191_arg_0 = state_96; [L688] SORT_4 var_191_arg_1 = var_181; [L689] SORT_1 var_191 = var_191_arg_0 == var_191_arg_1; [L690] SORT_4 var_189_arg_0 = state_50; [L691] SORT_4 var_189_arg_1 = var_16; [L692] SORT_1 var_189 = var_189_arg_0 == var_189_arg_1; [L693] SORT_4 var_185_arg_0 = state_96; [L694] SORT_4 var_185_arg_1 = var_125; [L695] SORT_1 var_185 = var_185_arg_0 == var_185_arg_1; [L696] SORT_4 var_182_arg_0 = state_96; [L697] SORT_4 var_182_arg_1 = var_181; [L698] SORT_1 var_182 = var_182_arg_0 == var_182_arg_1; [L699] SORT_9 var_179_arg_0 = state_111; [L700] SORT_9 var_179_arg_1 = var_122; [L701] SORT_1 var_179 = var_179_arg_0 == var_179_arg_1; [L702] SORT_4 var_178_arg_0 = state_17; [L703] SORT_4 var_178_arg_1 = var_52; [L704] SORT_4 var_178 = var_178_arg_0 + var_178_arg_1; [L705] SORT_1 var_180_arg_0 = var_179; [L706] SORT_4 var_180_arg_1 = state_17; [L707] SORT_4 var_180_arg_2 = var_178; [L708] EXPR var_180_arg_0 ? var_180_arg_1 : var_180_arg_2 [L708] SORT_4 var_180 = var_180_arg_0 ? var_180_arg_1 : var_180_arg_2; [L709] SORT_1 var_183_arg_0 = var_182; [L710] SORT_4 var_183_arg_1 = var_180; [L711] SORT_4 var_183_arg_2 = input_177; [L712] EXPR var_183_arg_0 ? var_183_arg_1 : var_183_arg_2 [L712] SORT_4 var_183 = var_183_arg_0 ? var_183_arg_1 : var_183_arg_2; [L713] SORT_1 var_186_arg_0 = var_185; [L714] SORT_4 var_186_arg_1 = input_184; [L715] SORT_4 var_186_arg_2 = var_183; [L716] EXPR var_186_arg_0 ? var_186_arg_1 : var_186_arg_2 [L716] SORT_4 var_186 = var_186_arg_0 ? var_186_arg_1 : var_186_arg_2; [L717] SORT_1 var_188_arg_0 = var_129; [L718] SORT_4 var_188_arg_1 = input_187; [L719] SORT_4 var_188_arg_2 = var_186; [L720] EXPR var_188_arg_0 ? var_188_arg_1 : var_188_arg_2 [L720] SORT_4 var_188 = var_188_arg_0 ? var_188_arg_1 : var_188_arg_2; [L721] SORT_1 var_190_arg_0 = var_189; [L722] SORT_4 var_190_arg_1 = var_188; [L723] SORT_4 var_190_arg_2 = input_176; [L724] EXPR var_190_arg_0 ? var_190_arg_1 : var_190_arg_2 [L724] SORT_4 var_190 = var_190_arg_0 ? var_190_arg_1 : var_190_arg_2; [L725] SORT_1 var_192_arg_0 = var_191; [L726] SORT_4 var_192_arg_1 = var_190; [L727] SORT_4 var_192_arg_2 = state_17; [L728] EXPR var_192_arg_0 ? var_192_arg_1 : var_192_arg_2 [L728] SORT_4 var_192 = var_192_arg_0 ? var_192_arg_1 : var_192_arg_2; [L729] SORT_1 var_194_arg_0 = var_193; [L730] SORT_4 var_194_arg_1 = state_17; [L731] SORT_4 var_194_arg_2 = var_192; [L732] EXPR var_194_arg_0 ? var_194_arg_1 : var_194_arg_2 [L732] SORT_4 var_194 = var_194_arg_0 ? var_194_arg_1 : var_194_arg_2; [L733] SORT_1 var_196_arg_0 = var_129; [L734] SORT_4 var_196_arg_1 = input_195; [L735] SORT_4 var_196_arg_2 = var_194; [L736] EXPR var_196_arg_0 ? var_196_arg_1 : var_196_arg_2 [L736] SORT_4 var_196 = var_196_arg_0 ? var_196_arg_1 : var_196_arg_2; [L737] SORT_1 var_198_arg_0 = var_197; [L738] SORT_4 var_198_arg_1 = var_196; [L739] SORT_4 var_198_arg_2 = input_175; [L740] EXPR var_198_arg_0 ? var_198_arg_1 : var_198_arg_2 [L740] SORT_4 var_198 = var_198_arg_0 ? var_198_arg_1 : var_198_arg_2; [L741] SORT_1 var_199_arg_0 = var_129; [L742] SORT_4 var_199_arg_1 = state_17; [L743] SORT_4 var_199_arg_2 = var_198; [L744] EXPR var_199_arg_0 ? var_199_arg_1 : var_199_arg_2 [L744] SORT_4 var_199 = var_199_arg_0 ? var_199_arg_1 : var_199_arg_2; [L745] SORT_1 var_201_arg_0 = var_200; [L746] SORT_4 var_201_arg_1 = var_199; [L747] SORT_4 var_201_arg_2 = input_174; [L748] EXPR var_201_arg_0 ? var_201_arg_1 : var_201_arg_2 [L748] SORT_4 var_201 = var_201_arg_0 ? var_201_arg_1 : var_201_arg_2; [L749] SORT_1 var_222_arg_0 = var_221; [L750] SORT_4 var_222_arg_1 = var_220; [L751] SORT_4 var_222_arg_2 = var_201; [L752] EXPR var_222_arg_0 ? var_222_arg_1 : var_222_arg_2 [L752] SORT_4 var_222 = var_222_arg_0 ? var_222_arg_1 : var_222_arg_2; [L753] SORT_1 var_233_arg_0 = var_232; [L754] SORT_4 var_233_arg_1 = var_230; [L755] SORT_4 var_233_arg_2 = var_222; [L756] EXPR var_233_arg_0 ? var_233_arg_1 : var_233_arg_2 [L756] SORT_4 var_233 = var_233_arg_0 ? var_233_arg_1 : var_233_arg_2; [L757] var_233 = var_233 & mask_SORT_4 [L758] SORT_4 next_234_arg_1 = var_233; [L759] SORT_4 var_272_arg_0 = state_50; [L760] SORT_4 var_272_arg_1 = var_79; [L761] SORT_1 var_272 = var_272_arg_0 == var_272_arg_1; [L762] SORT_4 var_270_arg_0 = state_50; [L763] SORT_4 var_270_arg_1 = var_66; [L764] SORT_1 var_270 = var_270_arg_0 == var_270_arg_1; [L765] SORT_1 var_273_arg_0 = var_272; [L766] SORT_1 var_273_arg_1 = var_270; [L767] SORT_1 var_273 = var_273_arg_0 | var_273_arg_1; [L768] var_273 = var_273 & mask_SORT_1 [L769] SORT_1 var_271_arg_0 = var_270; [L770] SORT_1 var_271_arg_1 = state_22; [L771] SORT_1 var_271_arg_2 = var_14; [L772] EXPR var_271_arg_0 ? var_271_arg_1 : var_271_arg_2 [L772] SORT_1 var_271 = var_271_arg_0 ? var_271_arg_1 : var_271_arg_2; [L773] SORT_4 var_268_arg_0 = state_50; [L774] SORT_4 var_268_arg_1 = var_52; [L775] SORT_1 var_268 = var_268_arg_0 == var_268_arg_1; [L776] SORT_4 var_266_arg_0 = state_50; [L777] SORT_4 var_266_arg_1 = var_16; [L778] SORT_1 var_266 = var_266_arg_0 == var_266_arg_1; [L779] SORT_4 var_263_arg_0 = state_50; [L780] SORT_4 var_263_arg_1 = var_16; [L781] SORT_1 var_263 = var_263_arg_0 == var_263_arg_1; [L782] SORT_4 var_259_arg_0 = state_96; [L783] SORT_4 var_259_arg_1 = var_125; [L784] SORT_1 var_259 = var_259_arg_0 == var_259_arg_1; [L785] SORT_4 var_257_arg_0 = state_96; [L786] SORT_4 var_257_arg_1 = var_181; [L787] SORT_1 var_257 = var_257_arg_0 == var_257_arg_1; [L788] SORT_1 var_242_arg_0 = var_14; [L789] SORT_1 var_242_arg_1 = input_8; [L790] SORT_4 var_242 = ((SORT_4)var_242_arg_0 << 1) | var_242_arg_1; [L791] var_242 = var_242 & mask_SORT_4 [L792] SORT_4 var_255_arg_0 = state_96; [L793] SORT_4 var_255_arg_1 = var_242; [L794] SORT_1 var_255 = var_255_arg_0 == var_255_arg_1; [L795] SORT_4 var_253_arg_0 = state_50; [L796] SORT_4 var_253_arg_1 = var_16; [L797] SORT_1 var_253 = var_253_arg_0 == var_253_arg_1; [L798] SORT_4 var_249_arg_0 = state_96; [L799] SORT_4 var_249_arg_1 = var_125; [L800] SORT_1 var_249 = var_249_arg_0 == var_249_arg_1; [L801] SORT_4 var_246_arg_0 = state_96; [L802] SORT_4 var_246_arg_1 = var_181; [L803] SORT_1 var_246 = var_246_arg_0 == var_246_arg_1; [L804] SORT_4 var_243_arg_0 = state_96; [L805] SORT_4 var_243_arg_1 = var_242; [L806] SORT_1 var_243 = var_243_arg_0 == var_243_arg_1; [L807] SORT_9 var_240_arg_0 = state_113; [L808] SORT_9 var_240_arg_1 = var_122; [L809] SORT_1 var_240 = var_240_arg_0 == var_240_arg_1; [L810] SORT_1 var_239_arg_0 = state_22; [L811] SORT_1 var_239_arg_1 = var_56; [L812] SORT_1 var_239 = var_239_arg_0 + var_239_arg_1; [L813] SORT_1 var_241_arg_0 = var_240; [L814] SORT_1 var_241_arg_1 = state_22; [L815] SORT_1 var_241_arg_2 = var_239; [L816] EXPR var_241_arg_0 ? var_241_arg_1 : var_241_arg_2 [L816] SORT_1 var_241 = var_241_arg_0 ? var_241_arg_1 : var_241_arg_2; [L817] SORT_1 var_244_arg_0 = var_243; [L818] SORT_1 var_244_arg_1 = var_241; [L819] SORT_1 var_244_arg_2 = input_238; [L820] EXPR var_244_arg_0 ? var_244_arg_1 : var_244_arg_2 [L820] SORT_1 var_244 = var_244_arg_0 ? var_244_arg_1 : var_244_arg_2; [L821] SORT_1 var_247_arg_0 = var_246; [L822] SORT_1 var_247_arg_1 = input_245; [L823] SORT_1 var_247_arg_2 = var_244; [L824] EXPR var_247_arg_0 ? var_247_arg_1 : var_247_arg_2 [L824] SORT_1 var_247 = var_247_arg_0 ? var_247_arg_1 : var_247_arg_2; [L825] SORT_1 var_250_arg_0 = var_249; [L826] SORT_1 var_250_arg_1 = input_248; [L827] SORT_1 var_250_arg_2 = var_247; [L828] EXPR var_250_arg_0 ? var_250_arg_1 : var_250_arg_2 [L828] SORT_1 var_250 = var_250_arg_0 ? var_250_arg_1 : var_250_arg_2; [L829] SORT_1 var_252_arg_0 = var_129; [L830] SORT_1 var_252_arg_1 = input_251; [L831] SORT_1 var_252_arg_2 = var_250; [L832] EXPR var_252_arg_0 ? var_252_arg_1 : var_252_arg_2 [L832] SORT_1 var_252 = var_252_arg_0 ? var_252_arg_1 : var_252_arg_2; [L833] SORT_1 var_254_arg_0 = var_253; [L834] SORT_1 var_254_arg_1 = var_252; [L835] SORT_1 var_254_arg_2 = input_237; [L836] EXPR var_254_arg_0 ? var_254_arg_1 : var_254_arg_2 [L836] SORT_1 var_254 = var_254_arg_0 ? var_254_arg_1 : var_254_arg_2; [L837] SORT_1 var_256_arg_0 = var_255; [L838] SORT_1 var_256_arg_1 = var_254; [L839] SORT_1 var_256_arg_2 = state_22; [L840] EXPR var_256_arg_0 ? var_256_arg_1 : var_256_arg_2 [L840] SORT_1 var_256 = var_256_arg_0 ? var_256_arg_1 : var_256_arg_2; [L841] SORT_1 var_258_arg_0 = var_257; [L842] SORT_1 var_258_arg_1 = state_22; [L843] SORT_1 var_258_arg_2 = var_256; [L844] EXPR var_258_arg_0 ? var_258_arg_1 : var_258_arg_2 [L844] SORT_1 var_258 = var_258_arg_0 ? var_258_arg_1 : var_258_arg_2; [L845] SORT_1 var_260_arg_0 = var_259; [L846] SORT_1 var_260_arg_1 = state_22; [L847] SORT_1 var_260_arg_2 = var_258; [L848] EXPR var_260_arg_0 ? var_260_arg_1 : var_260_arg_2 [L848] SORT_1 var_260 = var_260_arg_0 ? var_260_arg_1 : var_260_arg_2; [L849] SORT_1 var_262_arg_0 = var_129; [L850] SORT_1 var_262_arg_1 = input_261; [L851] SORT_1 var_262_arg_2 = var_260; [L852] EXPR var_262_arg_0 ? var_262_arg_1 : var_262_arg_2 [L852] SORT_1 var_262 = var_262_arg_0 ? var_262_arg_1 : var_262_arg_2; [L853] SORT_1 var_264_arg_0 = var_263; [L854] SORT_1 var_264_arg_1 = var_262; [L855] SORT_1 var_264_arg_2 = input_236; [L856] EXPR var_264_arg_0 ? var_264_arg_1 : var_264_arg_2 [L856] SORT_1 var_264 = var_264_arg_0 ? var_264_arg_1 : var_264_arg_2; [L857] SORT_1 var_265_arg_0 = var_129; [L858] SORT_1 var_265_arg_1 = state_22; [L859] SORT_1 var_265_arg_2 = var_264; [L860] EXPR var_265_arg_0 ? var_265_arg_1 : var_265_arg_2 [L860] SORT_1 var_265 = var_265_arg_0 ? var_265_arg_1 : var_265_arg_2; [L861] SORT_1 var_267_arg_0 = var_266; [L862] SORT_1 var_267_arg_1 = var_265; [L863] SORT_1 var_267_arg_2 = input_235; [L864] EXPR var_267_arg_0 ? var_267_arg_1 : var_267_arg_2 [L864] SORT_1 var_267 = var_267_arg_0 ? var_267_arg_1 : var_267_arg_2; [L865] SORT_1 var_269_arg_0 = var_268; [L866] SORT_1 var_269_arg_1 = state_22; [L867] SORT_1 var_269_arg_2 = var_267; [L868] EXPR var_269_arg_0 ? var_269_arg_1 : var_269_arg_2 [L868] SORT_1 var_269 = var_269_arg_0 ? var_269_arg_1 : var_269_arg_2; [L869] SORT_1 var_274_arg_0 = var_273; [L870] SORT_1 var_274_arg_1 = var_271; [L871] SORT_1 var_274_arg_2 = var_269; [L872] EXPR var_274_arg_0 ? var_274_arg_1 : var_274_arg_2 [L872] SORT_1 var_274 = var_274_arg_0 ? var_274_arg_1 : var_274_arg_2; [L873] var_274 = var_274 & mask_SORT_1 [L874] SORT_1 next_275_arg_1 = var_274; [L875] SORT_4 var_307_arg_0 = state_50; [L876] SORT_4 var_307_arg_1 = var_79; [L877] SORT_1 var_307 = var_307_arg_0 == var_307_arg_1; [L878] SORT_4 var_305_arg_0 = state_50; [L879] SORT_4 var_305_arg_1 = var_66; [L880] SORT_1 var_305 = var_305_arg_0 == var_305_arg_1; [L881] SORT_1 var_308_arg_0 = var_307; [L882] SORT_1 var_308_arg_1 = var_305; [L883] SORT_1 var_308 = var_308_arg_0 | var_308_arg_1; [L884] var_308 = var_308 & mask_SORT_1 [L885] SORT_4 var_303_arg_0 = state_50; [L886] SORT_4 var_303_arg_1 = var_66; [L887] SORT_1 var_303 = var_303_arg_0 == var_303_arg_1; [L888] SORT_1 var_302_arg_0 = var_225; [L889] SORT_4 var_302_arg_1 = state_50; [L890] SORT_4 var_302_arg_2 = var_16; [L891] EXPR var_302_arg_0 ? var_302_arg_1 : var_302_arg_2 [L891] SORT_4 var_302 = var_302_arg_0 ? var_302_arg_1 : var_302_arg_2; [L892] SORT_1 var_304_arg_0 = var_303; [L893] SORT_4 var_304_arg_1 = var_302; [L894] SORT_4 var_304_arg_2 = input_301; [L895] EXPR var_304_arg_0 ? var_304_arg_1 : var_304_arg_2 [L895] SORT_4 var_304 = var_304_arg_0 ? var_304_arg_1 : var_304_arg_2; [L896] SORT_1 var_306_arg_0 = var_305; [L897] SORT_4 var_306_arg_1 = var_304; [L898] SORT_4 var_306_arg_2 = var_16; [L899] EXPR var_306_arg_0 ? var_306_arg_1 : var_306_arg_2 [L899] SORT_4 var_306 = var_306_arg_0 ? var_306_arg_1 : var_306_arg_2; [L900] SORT_4 var_299_arg_0 = state_50; [L901] SORT_4 var_299_arg_1 = var_52; [L902] SORT_1 var_299 = var_299_arg_0 == var_299_arg_1; [L903] SORT_4 var_297_arg_0 = state_50; [L904] SORT_4 var_297_arg_1 = var_52; [L905] SORT_1 var_297 = var_297_arg_0 == var_297_arg_1; [L906] SORT_4 var_294_arg_0 = state_50; [L907] SORT_4 var_294_arg_1 = var_52; [L908] SORT_1 var_294 = var_294_arg_0 == var_294_arg_1; [L909] SORT_4 var_289_arg_0 = state_50; [L910] SORT_4 var_289_arg_1 = var_52; [L911] SORT_1 var_289 = var_289_arg_0 == var_289_arg_1; [L912] SORT_9 var_284_arg_0 = state_73; [L913] SORT_9 var_284_arg_1 = var_72; [L914] SORT_1 var_284 = var_284_arg_0 > var_284_arg_1; [L915] SORT_1 var_285_arg_0 = var_284; [L916] SORT_4 var_285_arg_1 = var_79; [L917] SORT_4 var_285_arg_2 = var_66; [L918] EXPR var_285_arg_0 ? var_285_arg_1 : var_285_arg_2 [L918] SORT_4 var_285 = var_285_arg_0 ? var_285_arg_1 : var_285_arg_2; [L919] SORT_1 var_286_arg_0 = var_151; [L920] SORT_4 var_286_arg_1 = var_285; [L921] SORT_4 var_286_arg_2 = input_283; [L922] EXPR var_286_arg_0 ? var_286_arg_1 : var_286_arg_2 [L922] SORT_4 var_286 = var_286_arg_0 ? var_286_arg_1 : var_286_arg_2; [L923] SORT_1 var_288_arg_0 = var_154; [L924] SORT_4 var_288_arg_1 = input_287; [L925] SORT_4 var_288_arg_2 = var_286; [L926] EXPR var_288_arg_0 ? var_288_arg_1 : var_288_arg_2 [L926] SORT_4 var_288 = var_288_arg_0 ? var_288_arg_1 : var_288_arg_2; [L927] SORT_1 var_290_arg_0 = var_289; [L928] SORT_4 var_290_arg_1 = var_288; [L929] SORT_4 var_290_arg_2 = input_282; [L930] EXPR var_290_arg_0 ? var_290_arg_1 : var_290_arg_2 [L930] SORT_4 var_290 = var_290_arg_0 ? var_290_arg_1 : var_290_arg_2; [L931] SORT_1 var_291_arg_0 = var_151; [L932] SORT_4 var_291_arg_1 = var_290; [L933] SORT_4 var_291_arg_2 = state_50; [L934] EXPR var_291_arg_0 ? var_291_arg_1 : var_291_arg_2 [L934] SORT_4 var_291 = var_291_arg_0 ? var_291_arg_1 : var_291_arg_2; [L935] SORT_1 var_293_arg_0 = var_154; [L936] SORT_4 var_293_arg_1 = input_292; [L937] SORT_4 var_293_arg_2 = var_291; [L938] EXPR var_293_arg_0 ? var_293_arg_1 : var_293_arg_2 [L938] SORT_4 var_293 = var_293_arg_0 ? var_293_arg_1 : var_293_arg_2; [L939] SORT_1 var_295_arg_0 = var_294; [L940] SORT_4 var_295_arg_1 = var_293; [L941] SORT_4 var_295_arg_2 = input_281; [L942] EXPR var_295_arg_0 ? var_295_arg_1 : var_295_arg_2 [L942] SORT_4 var_295 = var_295_arg_0 ? var_295_arg_1 : var_295_arg_2; [L943] SORT_1 var_296_arg_0 = var_154; [L944] SORT_4 var_296_arg_1 = var_79; [L945] SORT_4 var_296_arg_2 = var_295; [L946] EXPR var_296_arg_0 ? var_296_arg_1 : var_296_arg_2 [L946] SORT_4 var_296 = var_296_arg_0 ? var_296_arg_1 : var_296_arg_2; [L947] SORT_1 var_298_arg_0 = var_297; [L948] SORT_4 var_298_arg_1 = var_296; [L949] SORT_4 var_298_arg_2 = input_280; [L950] EXPR var_298_arg_0 ? var_298_arg_1 : var_298_arg_2 [L950] SORT_4 var_298 = var_298_arg_0 ? var_298_arg_1 : var_298_arg_2; [L951] SORT_4 var_278_arg_0 = state_50; [L952] SORT_4 var_278_arg_1 = var_16; [L953] SORT_1 var_278 = var_278_arg_0 == var_278_arg_1; [L954] SORT_1 var_277_arg_0 = var_129; [L955] SORT_4 var_277_arg_1 = var_52; [L956] SORT_4 var_277_arg_2 = state_50; [L957] EXPR var_277_arg_0 ? var_277_arg_1 : var_277_arg_2 [L957] SORT_4 var_277 = var_277_arg_0 ? var_277_arg_1 : var_277_arg_2; [L958] SORT_1 var_279_arg_0 = var_278; [L959] SORT_4 var_279_arg_1 = var_277; [L960] SORT_4 var_279_arg_2 = input_276; [L961] EXPR var_279_arg_0 ? var_279_arg_1 : var_279_arg_2 [L961] SORT_4 var_279 = var_279_arg_0 ? var_279_arg_1 : var_279_arg_2; [L962] SORT_1 var_300_arg_0 = var_299; [L963] SORT_4 var_300_arg_1 = var_298; [L964] SORT_4 var_300_arg_2 = var_279; [L965] EXPR var_300_arg_0 ? var_300_arg_1 : var_300_arg_2 [L965] SORT_4 var_300 = var_300_arg_0 ? var_300_arg_1 : var_300_arg_2; [L966] SORT_1 var_309_arg_0 = var_308; [L967] SORT_4 var_309_arg_1 = var_306; [L968] SORT_4 var_309_arg_2 = var_300; [L969] EXPR var_309_arg_0 ? var_309_arg_1 : var_309_arg_2 [L969] SORT_4 var_309 = var_309_arg_0 ? var_309_arg_1 : var_309_arg_2; [L970] var_309 = var_309 & mask_SORT_4 [L971] SORT_4 next_310_arg_1 = var_309; [L972] SORT_4 var_365_arg_0 = state_50; [L973] SORT_4 var_365_arg_1 = var_79; [L974] SORT_1 var_365 = var_365_arg_0 == var_365_arg_1; [L975] SORT_4 var_363_arg_0 = state_50; [L976] SORT_4 var_363_arg_1 = var_66; [L977] SORT_1 var_363 = var_363_arg_0 == var_363_arg_1; [L978] SORT_1 var_366_arg_0 = var_365; [L979] SORT_1 var_366_arg_1 = var_363; [L980] SORT_1 var_366 = var_366_arg_0 | var_366_arg_1; [L981] var_366 = var_366 & mask_SORT_1 [L982] SORT_1 var_364_arg_0 = var_363; [L983] SORT_9 var_364_arg_1 = state_73; [L984] SORT_9 var_364_arg_2 = state_73; [L985] EXPR var_364_arg_0 ? var_364_arg_1 : var_364_arg_2 [L985] SORT_9 var_364 = var_364_arg_0 ? var_364_arg_1 : var_364_arg_2; [L986] SORT_4 var_361_arg_0 = state_50; [L987] SORT_4 var_361_arg_1 = var_52; [L988] SORT_1 var_361 = var_361_arg_0 == var_361_arg_1; [L989] SORT_4 var_359_arg_0 = state_50; [L990] SORT_4 var_359_arg_1 = var_52; [L991] SORT_1 var_359 = var_359_arg_0 == var_359_arg_1; [L992] SORT_4 var_356_arg_0 = state_50; [L993] SORT_4 var_356_arg_1 = var_52; [L994] SORT_1 var_356 = var_356_arg_0 == var_356_arg_1; [L995] SORT_4 var_351_arg_0 = state_50; [L996] SORT_4 var_351_arg_1 = var_52; [L997] SORT_1 var_351 = var_351_arg_0 == var_351_arg_1; [L998] SORT_9 var_346_arg_0 = state_73; [L999] SORT_9 var_346_arg_1 = var_315; [L1000] SORT_9 var_346 = var_346_arg_0 - var_346_arg_1; [L1001] SORT_1 var_347_arg_0 = var_284; [L1002] SORT_9 var_347_arg_1 = var_346; [L1003] SORT_9 var_347_arg_2 = state_73; [L1004] EXPR var_347_arg_0 ? var_347_arg_1 : var_347_arg_2 [L1004] SORT_9 var_347 = var_347_arg_0 ? var_347_arg_1 : var_347_arg_2; [L1005] SORT_1 var_348_arg_0 = var_151; [L1006] SORT_9 var_348_arg_1 = var_347; [L1007] SORT_9 var_348_arg_2 = input_345; [L1008] EXPR var_348_arg_0 ? var_348_arg_1 : var_348_arg_2 [L1008] SORT_9 var_348 = var_348_arg_0 ? var_348_arg_1 : var_348_arg_2; [L1009] SORT_1 var_350_arg_0 = var_154; [L1010] SORT_9 var_350_arg_1 = input_349; [L1011] SORT_9 var_350_arg_2 = var_348; [L1012] EXPR var_350_arg_0 ? var_350_arg_1 : var_350_arg_2 [L1012] SORT_9 var_350 = var_350_arg_0 ? var_350_arg_1 : var_350_arg_2; [L1013] SORT_1 var_352_arg_0 = var_351; [L1014] SORT_9 var_352_arg_1 = var_350; [L1015] SORT_9 var_352_arg_2 = input_344; [L1016] EXPR var_352_arg_0 ? var_352_arg_1 : var_352_arg_2 [L1016] SORT_9 var_352 = var_352_arg_0 ? var_352_arg_1 : var_352_arg_2; [L1017] SORT_4 var_342_arg_0 = state_50; [L1018] SORT_4 var_342_arg_1 = var_52; [L1019] SORT_1 var_342 = var_342_arg_0 == var_342_arg_1; [L1020] SORT_9 var_336_arg_0 = state_73; [L1021] SORT_9 var_336_arg_1 = var_315; [L1022] SORT_9 var_336 = var_336_arg_0 - var_336_arg_1; [L1023] SORT_1 var_337_arg_0 = var_147; [L1024] SORT_9 var_337_arg_1 = state_73; [L1025] SORT_9 var_337_arg_2 = var_336; [L1026] EXPR var_337_arg_0 ? var_337_arg_1 : var_337_arg_2 [L1026] SORT_9 var_337 = var_337_arg_0 ? var_337_arg_1 : var_337_arg_2; [L1027] SORT_1 var_339_arg_0 = var_151; [L1028] SORT_9 var_339_arg_1 = input_338; [L1029] SORT_9 var_339_arg_2 = var_337; [L1030] EXPR var_339_arg_0 ? var_339_arg_1 : var_339_arg_2 [L1030] SORT_9 var_339 = var_339_arg_0 ? var_339_arg_1 : var_339_arg_2; [L1031] SORT_1 var_341_arg_0 = var_154; [L1032] SORT_9 var_341_arg_1 = input_340; [L1033] SORT_9 var_341_arg_2 = var_339; [L1034] EXPR var_341_arg_0 ? var_341_arg_1 : var_341_arg_2 [L1034] SORT_9 var_341 = var_341_arg_0 ? var_341_arg_1 : var_341_arg_2; [L1035] SORT_1 var_343_arg_0 = var_342; [L1036] SORT_9 var_343_arg_1 = var_341; [L1037] SORT_9 var_343_arg_2 = input_335; [L1038] EXPR var_343_arg_0 ? var_343_arg_1 : var_343_arg_2 [L1038] SORT_9 var_343 = var_343_arg_0 ? var_343_arg_1 : var_343_arg_2; [L1039] SORT_1 var_353_arg_0 = var_151; [L1040] SORT_9 var_353_arg_1 = var_352; [L1041] SORT_9 var_353_arg_2 = var_343; [L1042] EXPR var_353_arg_0 ? var_353_arg_1 : var_353_arg_2 [L1042] SORT_9 var_353 = var_353_arg_0 ? var_353_arg_1 : var_353_arg_2; [L1043] SORT_1 var_355_arg_0 = var_154; [L1044] SORT_9 var_355_arg_1 = input_354; [L1045] SORT_9 var_355_arg_2 = var_353; [L1046] EXPR var_355_arg_0 ? var_355_arg_1 : var_355_arg_2 [L1046] SORT_9 var_355 = var_355_arg_0 ? var_355_arg_1 : var_355_arg_2; [L1047] SORT_1 var_357_arg_0 = var_356; [L1048] SORT_9 var_357_arg_1 = var_355; [L1049] SORT_9 var_357_arg_2 = input_334; [L1050] EXPR var_357_arg_0 ? var_357_arg_1 : var_357_arg_2 [L1050] SORT_9 var_357 = var_357_arg_0 ? var_357_arg_1 : var_357_arg_2; [L1051] SORT_1 var_358_arg_0 = var_154; [L1052] SORT_9 var_358_arg_1 = state_73; [L1053] SORT_9 var_358_arg_2 = var_357; [L1054] EXPR var_358_arg_0 ? var_358_arg_1 : var_358_arg_2 [L1054] SORT_9 var_358 = var_358_arg_0 ? var_358_arg_1 : var_358_arg_2; [L1055] SORT_1 var_360_arg_0 = var_359; [L1056] SORT_9 var_360_arg_1 = var_358; [L1057] SORT_9 var_360_arg_2 = input_333; [L1058] EXPR var_360_arg_0 ? var_360_arg_1 : var_360_arg_2 [L1058] SORT_9 var_360 = var_360_arg_0 ? var_360_arg_1 : var_360_arg_2; [L1059] SORT_4 var_331_arg_0 = state_50; [L1060] SORT_4 var_331_arg_1 = var_16; [L1061] SORT_1 var_331 = var_331_arg_0 == var_331_arg_1; [L1062] SORT_4 var_328_arg_0 = state_50; [L1063] SORT_4 var_328_arg_1 = var_16; [L1064] SORT_1 var_328 = var_328_arg_0 == var_328_arg_1; [L1065] SORT_4 var_324_arg_0 = state_96; [L1066] SORT_4 var_324_arg_1 = var_125; [L1067] SORT_1 var_324 = var_324_arg_0 == var_324_arg_1; [L1068] SORT_4 var_322_arg_0 = state_50; [L1069] SORT_4 var_322_arg_1 = var_16; [L1070] SORT_1 var_322 = var_322_arg_0 == var_322_arg_1; [L1071] SORT_4 var_318_arg_0 = state_96; [L1072] SORT_4 var_318_arg_1 = var_125; [L1073] SORT_1 var_318 = var_318_arg_0 == var_318_arg_1; [L1074] SORT_9 var_316_arg_0 = state_73; [L1075] SORT_9 var_316_arg_1 = var_315; [L1076] SORT_9 var_316 = var_316_arg_0 + var_316_arg_1; [L1077] SORT_1 var_317_arg_0 = var_123; [L1078] SORT_9 var_317_arg_1 = state_73; [L1079] SORT_9 var_317_arg_2 = var_316; [L1080] EXPR var_317_arg_0 ? var_317_arg_1 : var_317_arg_2 [L1080] SORT_9 var_317 = var_317_arg_0 ? var_317_arg_1 : var_317_arg_2; [L1081] SORT_1 var_319_arg_0 = var_318; [L1082] SORT_9 var_319_arg_1 = var_317; [L1083] SORT_9 var_319_arg_2 = input_314; [L1084] EXPR var_319_arg_0 ? var_319_arg_1 : var_319_arg_2 [L1084] SORT_9 var_319 = var_319_arg_0 ? var_319_arg_1 : var_319_arg_2; [L1085] SORT_1 var_321_arg_0 = var_129; [L1086] SORT_9 var_321_arg_1 = input_320; [L1087] SORT_9 var_321_arg_2 = var_319; [L1088] EXPR var_321_arg_0 ? var_321_arg_1 : var_321_arg_2 [L1088] SORT_9 var_321 = var_321_arg_0 ? var_321_arg_1 : var_321_arg_2; [L1089] SORT_1 var_323_arg_0 = var_322; [L1090] SORT_9 var_323_arg_1 = var_321; [L1091] SORT_9 var_323_arg_2 = input_313; [L1092] EXPR var_323_arg_0 ? var_323_arg_1 : var_323_arg_2 [L1092] SORT_9 var_323 = var_323_arg_0 ? var_323_arg_1 : var_323_arg_2; [L1093] SORT_1 var_325_arg_0 = var_324; [L1094] SORT_9 var_325_arg_1 = var_323; [L1095] SORT_9 var_325_arg_2 = state_73; [L1096] EXPR var_325_arg_0 ? var_325_arg_1 : var_325_arg_2 [L1096] SORT_9 var_325 = var_325_arg_0 ? var_325_arg_1 : var_325_arg_2; [L1097] SORT_1 var_327_arg_0 = var_129; [L1098] SORT_9 var_327_arg_1 = input_326; [L1099] SORT_9 var_327_arg_2 = var_325; [L1100] EXPR var_327_arg_0 ? var_327_arg_1 : var_327_arg_2 [L1100] SORT_9 var_327 = var_327_arg_0 ? var_327_arg_1 : var_327_arg_2; [L1101] SORT_1 var_329_arg_0 = var_328; [L1102] SORT_9 var_329_arg_1 = var_327; [L1103] SORT_9 var_329_arg_2 = input_312; [L1104] EXPR var_329_arg_0 ? var_329_arg_1 : var_329_arg_2 [L1104] SORT_9 var_329 = var_329_arg_0 ? var_329_arg_1 : var_329_arg_2; [L1105] SORT_1 var_330_arg_0 = var_129; [L1106] SORT_9 var_330_arg_1 = state_73; [L1107] SORT_9 var_330_arg_2 = var_329; [L1108] EXPR var_330_arg_0 ? var_330_arg_1 : var_330_arg_2 [L1108] SORT_9 var_330 = var_330_arg_0 ? var_330_arg_1 : var_330_arg_2; [L1109] SORT_1 var_332_arg_0 = var_331; [L1110] SORT_9 var_332_arg_1 = var_330; [L1111] SORT_9 var_332_arg_2 = input_311; [L1112] EXPR var_332_arg_0 ? var_332_arg_1 : var_332_arg_2 [L1112] SORT_9 var_332 = var_332_arg_0 ? var_332_arg_1 : var_332_arg_2; [L1113] SORT_1 var_362_arg_0 = var_361; [L1114] SORT_9 var_362_arg_1 = var_360; [L1115] SORT_9 var_362_arg_2 = var_332; [L1116] EXPR var_362_arg_0 ? var_362_arg_1 : var_362_arg_2 [L1116] SORT_9 var_362 = var_362_arg_0 ? var_362_arg_1 : var_362_arg_2; [L1117] SORT_1 var_367_arg_0 = var_366; [L1118] SORT_9 var_367_arg_1 = var_364; [L1119] SORT_9 var_367_arg_2 = var_362; [L1120] EXPR var_367_arg_0 ? var_367_arg_1 : var_367_arg_2 [L1120] SORT_9 var_367 = var_367_arg_0 ? var_367_arg_1 : var_367_arg_2; [L1121] var_367 = var_367 & mask_SORT_9 [L1122] SORT_9 next_368_arg_1 = var_367; [L1123] SORT_4 var_97_arg_0 = state_50; [L1124] SORT_4 var_97_arg_1 = var_16; [L1125] SORT_1 var_97 = var_97_arg_0 == var_97_arg_1; [L1126] SORT_9 var_99_arg_0 = var_27; [L1127] SORT_9 var_99_arg_1 = var_98; [L1128] SORT_1 var_99 = var_99_arg_0 < var_99_arg_1; [L1129] SORT_1 var_100_arg_0 = var_97; [L1130] SORT_1 var_100_arg_1 = var_99; [L1131] SORT_1 var_100 = var_100_arg_0 & var_100_arg_1; [L1132] var_100 = var_100 & mask_SORT_1 [L1133] SORT_1 var_369_arg_0 = var_14; [L1134] SORT_1 var_369_arg_1 = input_2; [L1135] SORT_4 var_369 = ((SORT_4)var_369_arg_0 << 1) | var_369_arg_1; [L1136] SORT_1 var_370_arg_0 = var_100; [L1137] SORT_4 var_370_arg_1 = input_5; [L1138] SORT_4 var_370_arg_2 = var_369; [L1139] EXPR var_370_arg_0 ? var_370_arg_1 : var_370_arg_2 [L1139] SORT_4 var_370 = var_370_arg_0 ? var_370_arg_1 : var_370_arg_2; [L1140] var_370 = var_370 & mask_SORT_4 [L1141] SORT_4 next_371_arg_1 = var_370; [L1142] SORT_4 var_426_arg_0 = state_50; [L1143] SORT_4 var_426_arg_1 = var_79; [L1144] SORT_1 var_426 = var_426_arg_0 == var_426_arg_1; [L1145] SORT_4 var_424_arg_0 = state_50; [L1146] SORT_4 var_424_arg_1 = var_66; [L1147] SORT_1 var_424 = var_424_arg_0 == var_424_arg_1; [L1148] SORT_1 var_427_arg_0 = var_426; [L1149] SORT_1 var_427_arg_1 = var_424; [L1150] SORT_1 var_427 = var_427_arg_0 | var_427_arg_1; [L1151] var_427 = var_427 & mask_SORT_1 [L1152] SORT_4 var_422_arg_0 = state_50; [L1153] SORT_4 var_422_arg_1 = var_66; [L1154] SORT_1 var_422 = var_422_arg_0 == var_422_arg_1; [L1155] SORT_9 var_420_arg_0 = state_111; [L1156] SORT_9 var_420_arg_1 = var_315; [L1157] SORT_9 var_420 = var_420_arg_0 - var_420_arg_1; [L1158] SORT_1 var_421_arg_0 = var_225; [L1159] SORT_9 var_421_arg_1 = var_420; [L1160] SORT_9 var_421_arg_2 = state_111; [L1161] EXPR var_421_arg_0 ? var_421_arg_1 : var_421_arg_2 [L1161] SORT_9 var_421 = var_421_arg_0 ? var_421_arg_1 : var_421_arg_2; [L1162] SORT_1 var_423_arg_0 = var_422; [L1163] SORT_9 var_423_arg_1 = var_421; [L1164] SORT_9 var_423_arg_2 = input_419; [L1165] EXPR var_423_arg_0 ? var_423_arg_1 : var_423_arg_2 [L1165] SORT_9 var_423 = var_423_arg_0 ? var_423_arg_1 : var_423_arg_2; [L1166] SORT_1 var_425_arg_0 = var_424; [L1167] SORT_9 var_425_arg_1 = var_423; [L1168] SORT_9 var_425_arg_2 = state_111; [L1169] EXPR var_425_arg_0 ? var_425_arg_1 : var_425_arg_2 [L1169] SORT_9 var_425 = var_425_arg_0 ? var_425_arg_1 : var_425_arg_2; [L1170] SORT_4 var_417_arg_0 = state_50; [L1171] SORT_4 var_417_arg_1 = var_52; [L1172] SORT_1 var_417 = var_417_arg_0 == var_417_arg_1; [L1173] SORT_4 var_415_arg_0 = state_50; [L1174] SORT_4 var_415_arg_1 = var_52; [L1175] SORT_1 var_415 = var_415_arg_0 == var_415_arg_1; [L1176] SORT_4 var_412_arg_0 = state_50; [L1177] SORT_4 var_412_arg_1 = var_52; [L1178] SORT_1 var_412 = var_412_arg_0 == var_412_arg_1; [L1179] SORT_4 var_407_arg_0 = state_50; [L1180] SORT_4 var_407_arg_1 = var_52; [L1181] SORT_1 var_407 = var_407_arg_0 == var_407_arg_1; [L1182] SORT_9 var_401_arg_0 = state_111; [L1183] SORT_9 var_401_arg_1 = var_315; [L1184] SORT_9 var_401 = var_401_arg_0 - var_401_arg_1; [L1185] SORT_1 var_402_arg_0 = var_147; [L1186] SORT_9 var_402_arg_1 = var_401; [L1187] SORT_9 var_402_arg_2 = state_111; [L1188] EXPR var_402_arg_0 ? var_402_arg_1 : var_402_arg_2 [L1188] SORT_9 var_402 = var_402_arg_0 ? var_402_arg_1 : var_402_arg_2; [L1189] SORT_1 var_404_arg_0 = var_151; [L1190] SORT_9 var_404_arg_1 = input_403; [L1191] SORT_9 var_404_arg_2 = var_402; [L1192] EXPR var_404_arg_0 ? var_404_arg_1 : var_404_arg_2 [L1192] SORT_9 var_404 = var_404_arg_0 ? var_404_arg_1 : var_404_arg_2; [L1193] SORT_1 var_406_arg_0 = var_154; [L1194] SORT_9 var_406_arg_1 = input_405; [L1195] SORT_9 var_406_arg_2 = var_404; [L1196] EXPR var_406_arg_0 ? var_406_arg_1 : var_406_arg_2 [L1196] SORT_9 var_406 = var_406_arg_0 ? var_406_arg_1 : var_406_arg_2; [L1197] SORT_1 var_408_arg_0 = var_407; [L1198] SORT_9 var_408_arg_1 = var_406; [L1199] SORT_9 var_408_arg_2 = input_400; [L1200] EXPR var_408_arg_0 ? var_408_arg_1 : var_408_arg_2 [L1200] SORT_9 var_408 = var_408_arg_0 ? var_408_arg_1 : var_408_arg_2; [L1201] SORT_1 var_409_arg_0 = var_151; [L1202] SORT_9 var_409_arg_1 = state_111; [L1203] SORT_9 var_409_arg_2 = var_408; [L1204] EXPR var_409_arg_0 ? var_409_arg_1 : var_409_arg_2 [L1204] SORT_9 var_409 = var_409_arg_0 ? var_409_arg_1 : var_409_arg_2; [L1205] SORT_1 var_411_arg_0 = var_154; [L1206] SORT_9 var_411_arg_1 = input_410; [L1207] SORT_9 var_411_arg_2 = var_409; [L1208] EXPR var_411_arg_0 ? var_411_arg_1 : var_411_arg_2 [L1208] SORT_9 var_411 = var_411_arg_0 ? var_411_arg_1 : var_411_arg_2; [L1209] SORT_1 var_413_arg_0 = var_412; [L1210] SORT_9 var_413_arg_1 = var_411; [L1211] SORT_9 var_413_arg_2 = input_399; [L1212] EXPR var_413_arg_0 ? var_413_arg_1 : var_413_arg_2 [L1212] SORT_9 var_413 = var_413_arg_0 ? var_413_arg_1 : var_413_arg_2; [L1213] SORT_1 var_414_arg_0 = var_154; [L1214] SORT_9 var_414_arg_1 = state_111; [L1215] SORT_9 var_414_arg_2 = var_413; [L1216] EXPR var_414_arg_0 ? var_414_arg_1 : var_414_arg_2 [L1216] SORT_9 var_414 = var_414_arg_0 ? var_414_arg_1 : var_414_arg_2; [L1217] SORT_1 var_416_arg_0 = var_415; [L1218] SORT_9 var_416_arg_1 = var_414; [L1219] SORT_9 var_416_arg_2 = input_398; [L1220] EXPR var_416_arg_0 ? var_416_arg_1 : var_416_arg_2 [L1220] SORT_9 var_416 = var_416_arg_0 ? var_416_arg_1 : var_416_arg_2; [L1221] SORT_4 var_396_arg_0 = state_50; [L1222] SORT_4 var_396_arg_1 = var_16; [L1223] SORT_1 var_396 = var_396_arg_0 == var_396_arg_1; [L1224] SORT_4 var_393_arg_0 = state_50; [L1225] SORT_4 var_393_arg_1 = var_16; [L1226] SORT_1 var_393 = var_393_arg_0 == var_393_arg_1; [L1227] SORT_4 var_389_arg_0 = state_96; [L1228] SORT_4 var_389_arg_1 = var_125; [L1229] SORT_1 var_389 = var_389_arg_0 == var_389_arg_1; [L1230] SORT_4 var_387_arg_0 = state_96; [L1231] SORT_4 var_387_arg_1 = var_181; [L1232] SORT_1 var_387 = var_387_arg_0 == var_387_arg_1; [L1233] SORT_4 var_385_arg_0 = state_50; [L1234] SORT_4 var_385_arg_1 = var_16; [L1235] SORT_1 var_385 = var_385_arg_0 == var_385_arg_1; [L1236] SORT_4 var_381_arg_0 = state_96; [L1237] SORT_4 var_381_arg_1 = var_125; [L1238] SORT_1 var_381 = var_381_arg_0 == var_381_arg_1; [L1239] SORT_4 var_378_arg_0 = state_96; [L1240] SORT_4 var_378_arg_1 = var_181; [L1241] SORT_1 var_378 = var_378_arg_0 == var_378_arg_1; [L1242] SORT_9 var_376_arg_0 = state_111; [L1243] SORT_9 var_376_arg_1 = var_315; [L1244] SORT_9 var_376 = var_376_arg_0 + var_376_arg_1; [L1245] SORT_1 var_377_arg_0 = var_179; [L1246] SORT_9 var_377_arg_1 = state_111; [L1247] SORT_9 var_377_arg_2 = var_376; [L1248] EXPR var_377_arg_0 ? var_377_arg_1 : var_377_arg_2 [L1248] SORT_9 var_377 = var_377_arg_0 ? var_377_arg_1 : var_377_arg_2; [L1249] SORT_1 var_379_arg_0 = var_378; [L1250] SORT_9 var_379_arg_1 = var_377; [L1251] SORT_9 var_379_arg_2 = input_375; [L1252] EXPR var_379_arg_0 ? var_379_arg_1 : var_379_arg_2 [L1252] SORT_9 var_379 = var_379_arg_0 ? var_379_arg_1 : var_379_arg_2; [L1253] SORT_1 var_382_arg_0 = var_381; [L1254] SORT_9 var_382_arg_1 = input_380; [L1255] SORT_9 var_382_arg_2 = var_379; [L1256] EXPR var_382_arg_0 ? var_382_arg_1 : var_382_arg_2 [L1256] SORT_9 var_382 = var_382_arg_0 ? var_382_arg_1 : var_382_arg_2; [L1257] SORT_1 var_384_arg_0 = var_129; [L1258] SORT_9 var_384_arg_1 = input_383; [L1259] SORT_9 var_384_arg_2 = var_382; [L1260] EXPR var_384_arg_0 ? var_384_arg_1 : var_384_arg_2 [L1260] SORT_9 var_384 = var_384_arg_0 ? var_384_arg_1 : var_384_arg_2; [L1261] SORT_1 var_386_arg_0 = var_385; [L1262] SORT_9 var_386_arg_1 = var_384; [L1263] SORT_9 var_386_arg_2 = input_374; [L1264] EXPR var_386_arg_0 ? var_386_arg_1 : var_386_arg_2 [L1264] SORT_9 var_386 = var_386_arg_0 ? var_386_arg_1 : var_386_arg_2; [L1265] SORT_1 var_388_arg_0 = var_387; [L1266] SORT_9 var_388_arg_1 = var_386; [L1267] SORT_9 var_388_arg_2 = state_111; [L1268] EXPR var_388_arg_0 ? var_388_arg_1 : var_388_arg_2 [L1268] SORT_9 var_388 = var_388_arg_0 ? var_388_arg_1 : var_388_arg_2; [L1269] SORT_1 var_390_arg_0 = var_389; [L1270] SORT_9 var_390_arg_1 = state_111; [L1271] SORT_9 var_390_arg_2 = var_388; [L1272] EXPR var_390_arg_0 ? var_390_arg_1 : var_390_arg_2 [L1272] SORT_9 var_390 = var_390_arg_0 ? var_390_arg_1 : var_390_arg_2; [L1273] SORT_1 var_392_arg_0 = var_129; [L1274] SORT_9 var_392_arg_1 = input_391; [L1275] SORT_9 var_392_arg_2 = var_390; [L1276] EXPR var_392_arg_0 ? var_392_arg_1 : var_392_arg_2 [L1276] SORT_9 var_392 = var_392_arg_0 ? var_392_arg_1 : var_392_arg_2; [L1277] SORT_1 var_394_arg_0 = var_393; [L1278] SORT_9 var_394_arg_1 = var_392; [L1279] SORT_9 var_394_arg_2 = input_373; [L1280] EXPR var_394_arg_0 ? var_394_arg_1 : var_394_arg_2 [L1280] SORT_9 var_394 = var_394_arg_0 ? var_394_arg_1 : var_394_arg_2; [L1281] SORT_1 var_395_arg_0 = var_129; [L1282] SORT_9 var_395_arg_1 = state_111; [L1283] SORT_9 var_395_arg_2 = var_394; [L1284] EXPR var_395_arg_0 ? var_395_arg_1 : var_395_arg_2 [L1284] SORT_9 var_395 = var_395_arg_0 ? var_395_arg_1 : var_395_arg_2; [L1285] SORT_1 var_397_arg_0 = var_396; [L1286] SORT_9 var_397_arg_1 = var_395; [L1287] SORT_9 var_397_arg_2 = input_372; [L1288] EXPR var_397_arg_0 ? var_397_arg_1 : var_397_arg_2 [L1288] SORT_9 var_397 = var_397_arg_0 ? var_397_arg_1 : var_397_arg_2; [L1289] SORT_1 var_418_arg_0 = var_417; [L1290] SORT_9 var_418_arg_1 = var_416; [L1291] SORT_9 var_418_arg_2 = var_397; [L1292] EXPR var_418_arg_0 ? var_418_arg_1 : var_418_arg_2 [L1292] SORT_9 var_418 = var_418_arg_0 ? var_418_arg_1 : var_418_arg_2; [L1293] SORT_1 var_428_arg_0 = var_427; [L1294] SORT_9 var_428_arg_1 = var_425; [L1295] SORT_9 var_428_arg_2 = var_418; [L1296] EXPR var_428_arg_0 ? var_428_arg_1 : var_428_arg_2 [L1296] SORT_9 var_428 = var_428_arg_0 ? var_428_arg_1 : var_428_arg_2; [L1297] var_428 = var_428 & mask_SORT_9 [L1298] SORT_9 next_429_arg_1 = var_428; [L1299] SORT_4 var_465_arg_0 = state_50; [L1300] SORT_4 var_465_arg_1 = var_79; [L1301] SORT_1 var_465 = var_465_arg_0 == var_465_arg_1; [L1302] SORT_4 var_463_arg_0 = state_50; [L1303] SORT_4 var_463_arg_1 = var_66; [L1304] SORT_1 var_463 = var_463_arg_0 == var_463_arg_1; [L1305] SORT_1 var_466_arg_0 = var_465; [L1306] SORT_1 var_466_arg_1 = var_463; [L1307] SORT_1 var_466 = var_466_arg_0 | var_466_arg_1; [L1308] var_466 = var_466 & mask_SORT_1 [L1309] SORT_1 var_464_arg_0 = var_463; [L1310] SORT_9 var_464_arg_1 = state_113; [L1311] SORT_9 var_464_arg_2 = state_113; [L1312] EXPR var_464_arg_0 ? var_464_arg_1 : var_464_arg_2 [L1312] SORT_9 var_464 = var_464_arg_0 ? var_464_arg_1 : var_464_arg_2; [L1313] SORT_4 var_461_arg_0 = state_50; [L1314] SORT_4 var_461_arg_1 = var_52; [L1315] SORT_1 var_461 = var_461_arg_0 == var_461_arg_1; [L1316] SORT_4 var_459_arg_0 = state_50; [L1317] SORT_4 var_459_arg_1 = var_16; [L1318] SORT_1 var_459 = var_459_arg_0 == var_459_arg_1; [L1319] SORT_4 var_456_arg_0 = state_50; [L1320] SORT_4 var_456_arg_1 = var_16; [L1321] SORT_1 var_456 = var_456_arg_0 == var_456_arg_1; [L1322] SORT_4 var_452_arg_0 = state_96; [L1323] SORT_4 var_452_arg_1 = var_125; [L1324] SORT_1 var_452 = var_452_arg_0 == var_452_arg_1; [L1325] SORT_4 var_450_arg_0 = state_96; [L1326] SORT_4 var_450_arg_1 = var_181; [L1327] SORT_1 var_450 = var_450_arg_0 == var_450_arg_1; [L1328] SORT_4 var_448_arg_0 = state_96; [L1329] SORT_4 var_448_arg_1 = var_242; [L1330] SORT_1 var_448 = var_448_arg_0 == var_448_arg_1; [L1331] SORT_4 var_446_arg_0 = state_50; [L1332] SORT_4 var_446_arg_1 = var_16; [L1333] SORT_1 var_446 = var_446_arg_0 == var_446_arg_1; [L1334] SORT_4 var_442_arg_0 = state_96; [L1335] SORT_4 var_442_arg_1 = var_125; [L1336] SORT_1 var_442 = var_442_arg_0 == var_442_arg_1; [L1337] SORT_4 var_439_arg_0 = state_96; [L1338] SORT_4 var_439_arg_1 = var_181; [L1339] SORT_1 var_439 = var_439_arg_0 == var_439_arg_1; [L1340] SORT_4 var_436_arg_0 = state_96; [L1341] SORT_4 var_436_arg_1 = var_242; [L1342] SORT_1 var_436 = var_436_arg_0 == var_436_arg_1; [L1343] SORT_9 var_434_arg_0 = state_113; [L1344] SORT_9 var_434_arg_1 = var_315; [L1345] SORT_9 var_434 = var_434_arg_0 + var_434_arg_1; [L1346] SORT_1 var_435_arg_0 = var_240; [L1347] SORT_9 var_435_arg_1 = state_113; [L1348] SORT_9 var_435_arg_2 = var_434; [L1349] EXPR var_435_arg_0 ? var_435_arg_1 : var_435_arg_2 [L1349] SORT_9 var_435 = var_435_arg_0 ? var_435_arg_1 : var_435_arg_2; [L1350] SORT_1 var_437_arg_0 = var_436; [L1351] SORT_9 var_437_arg_1 = var_435; [L1352] SORT_9 var_437_arg_2 = input_433; [L1353] EXPR var_437_arg_0 ? var_437_arg_1 : var_437_arg_2 [L1353] SORT_9 var_437 = var_437_arg_0 ? var_437_arg_1 : var_437_arg_2; [L1354] SORT_1 var_440_arg_0 = var_439; [L1355] SORT_9 var_440_arg_1 = input_438; [L1356] SORT_9 var_440_arg_2 = var_437; [L1357] EXPR var_440_arg_0 ? var_440_arg_1 : var_440_arg_2 [L1357] SORT_9 var_440 = var_440_arg_0 ? var_440_arg_1 : var_440_arg_2; [L1358] SORT_1 var_443_arg_0 = var_442; [L1359] SORT_9 var_443_arg_1 = input_441; [L1360] SORT_9 var_443_arg_2 = var_440; [L1361] EXPR var_443_arg_0 ? var_443_arg_1 : var_443_arg_2 [L1361] SORT_9 var_443 = var_443_arg_0 ? var_443_arg_1 : var_443_arg_2; [L1362] SORT_1 var_445_arg_0 = var_129; [L1363] SORT_9 var_445_arg_1 = input_444; [L1364] SORT_9 var_445_arg_2 = var_443; [L1365] EXPR var_445_arg_0 ? var_445_arg_1 : var_445_arg_2 [L1365] SORT_9 var_445 = var_445_arg_0 ? var_445_arg_1 : var_445_arg_2; [L1366] SORT_1 var_447_arg_0 = var_446; [L1367] SORT_9 var_447_arg_1 = var_445; [L1368] SORT_9 var_447_arg_2 = input_432; [L1369] EXPR var_447_arg_0 ? var_447_arg_1 : var_447_arg_2 [L1369] SORT_9 var_447 = var_447_arg_0 ? var_447_arg_1 : var_447_arg_2; [L1370] SORT_1 var_449_arg_0 = var_448; [L1371] SORT_9 var_449_arg_1 = var_447; [L1372] SORT_9 var_449_arg_2 = state_113; [L1373] EXPR var_449_arg_0 ? var_449_arg_1 : var_449_arg_2 [L1373] SORT_9 var_449 = var_449_arg_0 ? var_449_arg_1 : var_449_arg_2; [L1374] SORT_1 var_451_arg_0 = var_450; [L1375] SORT_9 var_451_arg_1 = state_113; [L1376] SORT_9 var_451_arg_2 = var_449; [L1377] EXPR var_451_arg_0 ? var_451_arg_1 : var_451_arg_2 [L1377] SORT_9 var_451 = var_451_arg_0 ? var_451_arg_1 : var_451_arg_2; [L1378] SORT_1 var_453_arg_0 = var_452; [L1379] SORT_9 var_453_arg_1 = state_113; [L1380] SORT_9 var_453_arg_2 = var_451; [L1381] EXPR var_453_arg_0 ? var_453_arg_1 : var_453_arg_2 [L1381] SORT_9 var_453 = var_453_arg_0 ? var_453_arg_1 : var_453_arg_2; [L1382] SORT_1 var_455_arg_0 = var_129; [L1383] SORT_9 var_455_arg_1 = input_454; [L1384] SORT_9 var_455_arg_2 = var_453; [L1385] EXPR var_455_arg_0 ? var_455_arg_1 : var_455_arg_2 [L1385] SORT_9 var_455 = var_455_arg_0 ? var_455_arg_1 : var_455_arg_2; [L1386] SORT_1 var_457_arg_0 = var_456; [L1387] SORT_9 var_457_arg_1 = var_455; [L1388] SORT_9 var_457_arg_2 = input_431; [L1389] EXPR var_457_arg_0 ? var_457_arg_1 : var_457_arg_2 [L1389] SORT_9 var_457 = var_457_arg_0 ? var_457_arg_1 : var_457_arg_2; [L1390] SORT_1 var_458_arg_0 = var_129; [L1391] SORT_9 var_458_arg_1 = state_113; [L1392] SORT_9 var_458_arg_2 = var_457; [L1393] EXPR var_458_arg_0 ? var_458_arg_1 : var_458_arg_2 [L1393] SORT_9 var_458 = var_458_arg_0 ? var_458_arg_1 : var_458_arg_2; [L1394] SORT_1 var_460_arg_0 = var_459; [L1395] SORT_9 var_460_arg_1 = var_458; [L1396] SORT_9 var_460_arg_2 = input_430; [L1397] EXPR var_460_arg_0 ? var_460_arg_1 : var_460_arg_2 [L1397] SORT_9 var_460 = var_460_arg_0 ? var_460_arg_1 : var_460_arg_2; [L1398] SORT_1 var_462_arg_0 = var_461; [L1399] SORT_9 var_462_arg_1 = state_113; [L1400] SORT_9 var_462_arg_2 = var_460; [L1401] EXPR var_462_arg_0 ? var_462_arg_1 : var_462_arg_2 [L1401] SORT_9 var_462 = var_462_arg_0 ? var_462_arg_1 : var_462_arg_2; [L1402] SORT_1 var_467_arg_0 = var_466; [L1403] SORT_9 var_467_arg_1 = var_464; [L1404] SORT_9 var_467_arg_2 = var_462; [L1405] EXPR var_467_arg_0 ? var_467_arg_1 : var_467_arg_2 [L1405] SORT_9 var_467 = var_467_arg_0 ? var_467_arg_1 : var_467_arg_2; [L1406] var_467 = var_467 & mask_SORT_9 [L1407] SORT_9 next_468_arg_1 = var_467; [L1409] state_12 = next_173_arg_1 [L1410] state_17 = next_234_arg_1 [L1411] state_22 = next_275_arg_1 [L1412] state_50 = next_310_arg_1 [L1413] state_73 = next_368_arg_1 [L1414] state_96 = next_371_arg_1 [L1415] state_111 = next_429_arg_1 [L1416] state_113 = next_468_arg_1 [L165] input_2 = __VERIFIER_nondet_uchar() [L166] input_2 = input_2 & mask_SORT_1 [L167] input_3 = __VERIFIER_nondet_uchar() [L168] input_5 = __VERIFIER_nondet_uchar() [L169] input_6 = __VERIFIER_nondet_uchar() [L170] input_6 = input_6 & mask_SORT_1 [L171] input_7 = __VERIFIER_nondet_uchar() [L172] input_7 = input_7 & mask_SORT_1 [L173] input_8 = __VERIFIER_nondet_uchar() [L174] input_8 = input_8 & mask_SORT_1 [L175] input_103 = __VERIFIER_nondet_uchar() [L176] input_116 = __VERIFIER_nondet_uchar() [L177] input_117 = __VERIFIER_nondet_uchar() [L178] input_118 = __VERIFIER_nondet_uchar() [L179] input_119 = __VERIFIER_nondet_uchar() [L180] input_128 = __VERIFIER_nondet_uchar() [L181] input_135 = __VERIFIER_nondet_uchar() [L182] input_142 = __VERIFIER_nondet_uchar() [L183] input_143 = __VERIFIER_nondet_uchar() [L184] input_144 = __VERIFIER_nondet_uchar() [L185] input_149 = __VERIFIER_nondet_uchar() [L186] input_153 = __VERIFIER_nondet_uchar() [L187] input_159 = __VERIFIER_nondet_uchar() [L188] input_174 = __VERIFIER_nondet_uchar() [L189] input_175 = __VERIFIER_nondet_uchar() [L190] input_176 = __VERIFIER_nondet_uchar() [L191] input_177 = __VERIFIER_nondet_uchar() [L192] input_184 = __VERIFIER_nondet_uchar() [L193] input_187 = __VERIFIER_nondet_uchar() [L194] input_195 = __VERIFIER_nondet_uchar() [L195] input_202 = __VERIFIER_nondet_uchar() [L196] input_203 = __VERIFIER_nondet_uchar() [L197] input_204 = __VERIFIER_nondet_uchar() [L198] input_207 = __VERIFIER_nondet_uchar() [L199] input_209 = __VERIFIER_nondet_uchar() [L200] input_214 = __VERIFIER_nondet_uchar() [L201] input_223 = __VERIFIER_nondet_uchar() [L202] input_235 = __VERIFIER_nondet_uchar() [L203] input_236 = __VERIFIER_nondet_uchar() [L204] input_237 = __VERIFIER_nondet_uchar() [L205] input_238 = __VERIFIER_nondet_uchar() [L206] input_245 = __VERIFIER_nondet_uchar() [L207] input_248 = __VERIFIER_nondet_uchar() [L208] input_251 = __VERIFIER_nondet_uchar() [L209] input_261 = __VERIFIER_nondet_uchar() [L210] input_276 = __VERIFIER_nondet_uchar() [L211] input_280 = __VERIFIER_nondet_uchar() [L212] input_281 = __VERIFIER_nondet_uchar() [L213] input_282 = __VERIFIER_nondet_uchar() [L214] input_283 = __VERIFIER_nondet_uchar() [L215] input_287 = __VERIFIER_nondet_uchar() [L216] input_292 = __VERIFIER_nondet_uchar() [L217] input_301 = __VERIFIER_nondet_uchar() [L218] input_311 = __VERIFIER_nondet_uchar() [L219] input_312 = __VERIFIER_nondet_uchar() [L220] input_313 = __VERIFIER_nondet_uchar() [L221] input_314 = __VERIFIER_nondet_uchar() [L222] input_320 = __VERIFIER_nondet_uchar() [L223] input_326 = __VERIFIER_nondet_uchar() [L224] input_333 = __VERIFIER_nondet_uchar() [L225] input_334 = __VERIFIER_nondet_uchar() [L226] input_335 = __VERIFIER_nondet_uchar() [L227] input_338 = __VERIFIER_nondet_uchar() [L228] input_340 = __VERIFIER_nondet_uchar() [L229] input_344 = __VERIFIER_nondet_uchar() [L230] input_345 = __VERIFIER_nondet_uchar() [L231] input_349 = __VERIFIER_nondet_uchar() [L232] input_354 = __VERIFIER_nondet_uchar() [L233] input_372 = __VERIFIER_nondet_uchar() [L234] input_373 = __VERIFIER_nondet_uchar() [L235] input_374 = __VERIFIER_nondet_uchar() [L236] input_375 = __VERIFIER_nondet_uchar() [L237] input_380 = __VERIFIER_nondet_uchar() [L238] input_383 = __VERIFIER_nondet_uchar() [L239] input_391 = __VERIFIER_nondet_uchar() [L240] input_398 = __VERIFIER_nondet_uchar() [L241] input_399 = __VERIFIER_nondet_uchar() [L242] input_400 = __VERIFIER_nondet_uchar() [L243] input_403 = __VERIFIER_nondet_uchar() [L244] input_405 = __VERIFIER_nondet_uchar() [L245] input_410 = __VERIFIER_nondet_uchar() [L246] input_419 = __VERIFIER_nondet_uchar() [L247] input_430 = __VERIFIER_nondet_uchar() [L248] input_431 = __VERIFIER_nondet_uchar() [L249] input_432 = __VERIFIER_nondet_uchar() [L250] input_433 = __VERIFIER_nondet_uchar() [L251] input_438 = __VERIFIER_nondet_uchar() [L252] input_441 = __VERIFIER_nondet_uchar() [L253] input_444 = __VERIFIER_nondet_uchar() [L254] input_454 = __VERIFIER_nondet_uchar() [L257] SORT_1 var_15_arg_0 = var_14; [L258] SORT_10 var_15_arg_1 = state_12; [L259] SORT_9 var_15 = ((SORT_9)var_15_arg_0 << 3) | var_15_arg_1; [L260] SORT_4 var_19_arg_0 = state_17; [L261] SORT_1 var_19_arg_1 = var_14; [L262] SORT_10 var_19 = ((SORT_10)var_19_arg_0 << 1) | var_19_arg_1; [L263] var_19 = var_19 & mask_SORT_10 [L264] SORT_1 var_20_arg_0 = var_14; [L265] SORT_10 var_20_arg_1 = var_19; [L266] SORT_9 var_20 = ((SORT_9)var_20_arg_0 << 3) | var_20_arg_1; [L267] SORT_9 var_21_arg_0 = var_15; [L268] SORT_9 var_21_arg_1 = var_20; [L269] SORT_9 var_21 = var_21_arg_0 + var_21_arg_1; [L270] SORT_1 var_24_arg_0 = var_14; [L271] SORT_1 var_24_arg_1 = state_22; [L272] SORT_4 var_24 = ((SORT_4)var_24_arg_0 << 1) | var_24_arg_1; [L273] var_24 = var_24 & mask_SORT_4 [L274] SORT_1 var_25_arg_0 = state_22; [L275] SORT_4 var_25_arg_1 = var_24; [L276] SORT_10 var_25 = ((SORT_10)var_25_arg_0 << 2) | var_25_arg_1; [L277] var_25 = var_25 & mask_SORT_10 [L278] SORT_1 var_26_arg_0 = var_14; [L279] SORT_10 var_26_arg_1 = var_25; [L280] SORT_9 var_26 = ((SORT_9)var_26_arg_0 << 3) | var_26_arg_1; [L281] SORT_9 var_27_arg_0 = var_21; [L282] SORT_9 var_27_arg_1 = var_26; [L283] SORT_9 var_27 = var_27_arg_0 + var_27_arg_1; [L284] var_27 = var_27 & mask_SORT_9 [L285] SORT_9 var_28_arg_0 = var_27; [L286] SORT_1 var_28 = var_28_arg_0 >> 3; [L287] var_28 = var_28 & mask_SORT_1 [L288] SORT_1 var_29_arg_0 = var_28; [L289] SORT_1 var_29_arg_1 = var_14; [L290] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L291] SORT_9 var_30_arg_0 = var_27; [L292] SORT_4 var_30 = var_30_arg_0 >> 1; [L293] var_30 = var_30 & mask_SORT_4 [L294] SORT_4 var_31_arg_0 = var_30; [L295] SORT_4 var_31_arg_1 = var_16; [L296] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L297] SORT_1 var_32_arg_0 = var_29; [L298] SORT_1 var_32_arg_1 = var_31; [L299] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L300] SORT_9 var_34_arg_0 = var_27; [L301] SORT_9 var_34_arg_1 = var_33; [L302] SORT_1 var_34 = var_34_arg_0 == var_34_arg_1; [L303] SORT_1 var_35_arg_0 = var_34; [L304] SORT_1 var_35 = ~var_35_arg_0; [L305] SORT_10 var_36_arg_0 = state_12; [L306] SORT_10 var_36_arg_1 = var_11; [L307] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L308] SORT_1 var_37_arg_0 = var_36; [L309] SORT_1 var_37 = ~var_37_arg_0; [L310] SORT_1 var_38_arg_0 = var_35; [L311] SORT_1 var_38_arg_1 = var_37; [L312] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L313] SORT_1 var_39_arg_0 = var_32; [L314] SORT_1 var_39_arg_1 = var_38; [L315] SORT_1 var_39 = var_39_arg_0 & var_39_arg_1; [L316] SORT_9 var_41_arg_0 = var_27; [L317] SORT_9 var_41_arg_1 = var_40; [L318] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L319] SORT_1 var_42_arg_0 = var_41; [L320] SORT_1 var_42 = ~var_42_arg_0; [L321] SORT_10 var_43_arg_0 = state_12; [L322] SORT_10 var_43_arg_1 = var_11; [L323] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L324] SORT_1 var_44_arg_0 = var_43; [L325] SORT_1 var_44 = ~var_44_arg_0; [L326] SORT_4 var_45_arg_0 = state_17; [L327] SORT_4 var_45_arg_1 = var_16; [L328] SORT_1 var_45 = var_45_arg_0 == var_45_arg_1; [L329] SORT_1 var_46_arg_0 = var_45; [L330] SORT_1 var_46 = ~var_46_arg_0; [L331] SORT_1 var_47_arg_0 = var_44; [L332] SORT_1 var_47_arg_1 = var_46; [L333] SORT_1 var_47 = var_47_arg_0 | var_47_arg_1; [L334] SORT_1 var_48_arg_0 = var_42; [L335] SORT_1 var_48_arg_1 = var_47; [L336] SORT_1 var_48 = var_48_arg_0 | var_48_arg_1; [L337] SORT_1 var_49_arg_0 = var_39; [L338] SORT_1 var_49_arg_1 = var_48; [L339] SORT_1 var_49 = var_49_arg_0 & var_49_arg_1; [L340] SORT_4 var_53_arg_0 = state_50; [L341] SORT_4 var_53_arg_1 = var_52; [L342] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L343] SORT_9 var_54_arg_0 = var_27; [L344] SORT_9 var_54_arg_1 = var_40; [L345] SORT_1 var_54 = var_54_arg_0 == var_54_arg_1; [L346] SORT_1 var_55_arg_0 = var_53; [L347] SORT_1 var_55_arg_1 = var_54; [L348] SORT_1 var_55 = var_55_arg_0 & var_55_arg_1; [L349] SORT_1 var_57_arg_0 = var_28; [L350] SORT_1 var_57_arg_1 = var_56; [L351] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L352] SORT_1 var_58_arg_0 = var_55; [L353] SORT_1 var_58_arg_1 = var_57; [L354] SORT_1 var_58 = var_58_arg_0 | var_58_arg_1; [L355] SORT_1 var_59_arg_0 = var_58; [L356] SORT_1 var_59 = ~var_59_arg_0; [L357] SORT_10 var_60_arg_0 = state_12; [L358] SORT_10 var_60_arg_1 = var_11; [L359] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L360] SORT_4 var_61_arg_0 = state_17; [L361] SORT_4 var_61_arg_1 = var_16; [L362] SORT_1 var_61 = var_61_arg_0 == var_61_arg_1; [L363] SORT_1 var_62_arg_0 = var_60; [L364] SORT_1 var_62_arg_1 = var_61; [L365] SORT_1 var_62 = var_62_arg_0 & var_62_arg_1; [L366] SORT_1 var_63_arg_0 = var_62; [L367] SORT_1 var_63 = ~var_63_arg_0; [L368] SORT_1 var_64_arg_0 = var_59; [L369] SORT_1 var_64_arg_1 = var_63; [L370] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L371] SORT_1 var_65_arg_0 = var_49; [L372] SORT_1 var_65_arg_1 = var_64; [L373] SORT_1 var_65 = var_65_arg_0 & var_65_arg_1; [L374] SORT_4 var_67_arg_0 = state_50; [L375] SORT_4 var_67_arg_1 = var_66; [L376] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L377] SORT_1 var_68_arg_0 = var_67; [L378] SORT_1 var_68 = ~var_68_arg_0; [L379] SORT_1 var_69_arg_0 = state_22; [L380] SORT_1 var_69_arg_1 = var_14; [L381] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L382] SORT_10 var_70_arg_0 = state_12; [L383] SORT_10 var_70_arg_1 = var_11; [L384] SORT_1 var_70 = var_70_arg_0 == var_70_arg_1; [L385] SORT_1 var_71_arg_0 = var_69; [L386] SORT_1 var_71_arg_1 = var_70; [L387] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L388] SORT_9 var_75_arg_0 = state_73; [L389] SORT_9 var_75_arg_1 = var_72; [L390] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L391] SORT_1 var_76_arg_0 = var_71; [L392] SORT_1 var_76_arg_1 = var_75; [L393] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L394] SORT_1 var_77_arg_0 = var_68; [L395] SORT_1 var_77_arg_1 = var_76; [L396] SORT_1 var_77 = var_77_arg_0 | var_77_arg_1; [L397] SORT_1 var_78_arg_0 = var_65; [L398] SORT_1 var_78_arg_1 = var_77; [L399] SORT_1 var_78 = var_78_arg_0 & var_78_arg_1; [L400] SORT_4 var_80_arg_0 = state_50; [L401] SORT_4 var_80_arg_1 = var_79; [L402] SORT_1 var_80 = var_80_arg_0 == var_80_arg_1; [L403] SORT_1 var_81_arg_0 = var_80; [L404] SORT_1 var_81 = ~var_81_arg_0; [L405] SORT_9 var_82_arg_0 = var_27; [L406] SORT_4 var_82 = var_82_arg_0 >> 2; [L407] var_82 = var_82 & mask_SORT_4 [L408] SORT_4 var_83_arg_0 = var_82; [L409] SORT_4 var_83_arg_1 = var_52; [L410] SORT_1 var_83 = var_83_arg_0 == var_83_arg_1; [L411] SORT_9 var_84_arg_0 = var_27; [L412] SORT_4 var_84 = var_84_arg_0 >> 0; [L413] var_84 = var_84 & mask_SORT_4 [L414] SORT_4 var_85_arg_0 = var_84; [L415] SORT_4 var_85_arg_1 = var_52; [L416] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L417] SORT_4 var_86_arg_0 = var_84; [L418] SORT_4 var_86_arg_1 = var_66; [L419] SORT_1 var_86 = var_86_arg_0 == var_86_arg_1; [L420] SORT_1 var_87_arg_0 = var_85; [L421] SORT_1 var_87_arg_1 = var_86; [L422] SORT_1 var_87 = var_87_arg_0 | var_87_arg_1; [L423] SORT_1 var_88_arg_0 = var_83; [L424] SORT_1 var_88_arg_1 = var_87; [L425] SORT_1 var_88 = var_88_arg_0 & var_88_arg_1; [L426] SORT_1 var_89_arg_0 = var_81; [L427] SORT_1 var_89_arg_1 = var_88; [L428] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L429] SORT_1 var_90_arg_0 = var_78; [L430] SORT_1 var_90_arg_1 = var_89; [L431] SORT_1 var_90 = var_90_arg_0 & var_90_arg_1; [L432] SORT_1 var_93_arg_0 = var_90; [L433] SORT_1 var_93 = ~var_93_arg_0; [L434] SORT_1 var_94_arg_0 = var_56; [L435] SORT_1 var_94_arg_1 = var_93; [L436] SORT_1 var_94 = var_94_arg_0 & var_94_arg_1; [L437] var_94 = var_94 & mask_SORT_1 [L438] SORT_1 bad_95_arg_0 = var_94; [L439] CALL __VERIFIER_assert(!(bad_95_arg_0)) [L20] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 301 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 237.2s, OverallIterations: 91, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 28.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 112500 SdHoareTripleChecker+Valid, 21.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112500 mSDsluCounter, 228301 SdHoareTripleChecker+Invalid, 19.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1092 IncrementalHoareTripleChecker+Unchecked, 175236 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8303 IncrementalHoareTripleChecker+Invalid, 9485 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 53065 mSDtfsCounter, 8303 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26667 GetRequests, 26134 SyntacticMatches, 0 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1005occurred in iteration=90, InterpolantAutomatonStates: 662, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 90 MinimizatonAttempts, 48345 StatesRemovedByMinimization, 90 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.3s SsaConstructionTime, 31.7s SatisfiabilityAnalysisTime, 118.2s InterpolantComputationTime, 26825 NumberOfCodeBlocks, 26825 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 26734 ConstructedInterpolants, 422 QuantifiedInterpolants, 123265 SizeOfPredicates, 2245 NumberOfNonLiveVariables, 163294 ConjunctsInSsa, 2233 ConjunctsInUnsatCore, 91 InterpolantComputations, 90 PerfectInterpolantSequences, 178/180 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN