./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW --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 32bit --witnessprinter.graph.data.programhash fd6b20844e2c749d2220243ee5decb4640d1db1a76545071f1578ab9a21c944c --- 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-4e7fbc6 [2022-11-23 15:41:13,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:41:13,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:41:13,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:41:13,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:41:13,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:41:13,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:41:13,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:41:13,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:41:13,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:41:13,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:41:13,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:41:13,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:41:13,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:41:13,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:41:13,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:41:13,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:41:13,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:41:13,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:41:13,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:41:13,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:41:13,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:41:13,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:41:13,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:41:13,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:41:13,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:41:13,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:41:13,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:41:13,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:41:13,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:41:13,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:41:13,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:41:13,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:41:13,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:41:13,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:41:13,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:41:13,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:41:13,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:41:13,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:41:13,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:41:13,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:41:13,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:41:13,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:41:13,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:41:13,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:41:13,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:41:13,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:41:13,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:41:13,115 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:41:13,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:41:13,115 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:41:13,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:41:13,117 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:41:13,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:41:13,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:41:13,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:41:13,118 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:41:13,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:41:13,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:41:13,118 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:41:13,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:41:13,119 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:41:13,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:41:13,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:41:13,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:41:13,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:41:13,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:41:13,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:41:13,121 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:41:13,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:41:13,122 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:41:13,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:41:13,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:41:13,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:41:13,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:41:13,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:41:13,123 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:41:13,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:41:13,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:41:13,124 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:41:13,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:41:13,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:41:13,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:41:13,139 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_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd6b20844e2c749d2220243ee5decb4640d1db1a76545071f1578ab9a21c944c [2022-11-23 15:41:13,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:41:13,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:41:13,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:41:13,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:41:13,409 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:41:13,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c [2022-11-23 15:41:16,598 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:41:17,372 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:41:17,373 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c [2022-11-23 15:41:17,424 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/data/8d3e05787/4c7a61020fce4452adcd36595b5543a2/FLAG8fe722ae1 [2022-11-23 15:41:17,441 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/data/8d3e05787/4c7a61020fce4452adcd36595b5543a2 [2022-11-23 15:41:17,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:41:17,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:41:17,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:41:17,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:41:17,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:41:17,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:17" (1/1) ... [2022-11-23 15:41:17,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab9cfe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:17, skipping insertion in model container [2022-11-23 15:41:17,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:17" (1/1) ... [2022-11-23 15:41:17,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:41:17,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:41:20,069 WARN L237 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_d7fa013d-e18d-404e-884e-171d1a64385e/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c[381679,381692] [2022-11-23 15:41:20,096 WARN L237 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_d7fa013d-e18d-404e-884e-171d1a64385e/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c[383339,383352] [2022-11-23 15:41:20,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:41:20,377 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:41:21,565 WARN L237 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_d7fa013d-e18d-404e-884e-171d1a64385e/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c[381679,381692] [2022-11-23 15:41:21,569 WARN L237 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_d7fa013d-e18d-404e-884e-171d1a64385e/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c[383339,383352] [2022-11-23 15:41:21,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:41:21,644 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:41:21,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21 WrapperNode [2022-11-23 15:41:21,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:41:21,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:41:21,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:41:21,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:41:21,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:21,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,271 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-11-23 15:41:22,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:41:22,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:41:22,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:41:22,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:41:22,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,713 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:41:22,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:41:22,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:41:22,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:41:22,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (1/1) ... [2022-11-23 15:41:22,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:41:22,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:22,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:41:22,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:41:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:41:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 15:41:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 15:41:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 15:41:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 15:41:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 15:41:22,999 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 15:41:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 15:41:22,999 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 15:41:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 15:41:22,999 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 15:41:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 15:41:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 15:41:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:41:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:41:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:41:23,234 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:41:23,236 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:41:32,097 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:41:34,667 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:41:34,667 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-23 15:41:34,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:34 BoogieIcfgContainer [2022-11-23 15:41:34,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:41:34,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:41:34,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:41:34,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:41:34,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:17" (1/3) ... [2022-11-23 15:41:34,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce454a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:34, skipping insertion in model container [2022-11-23 15:41:34,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:21" (2/3) ... [2022-11-23 15:41:34,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce454a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:34, skipping insertion in model container [2022-11-23 15:41:34,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:34" (3/3) ... [2022-11-23 15:41:34,688 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-1.c [2022-11-23 15:41:34,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:41:34,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:41:34,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:41:34,831 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;@315dfeb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:41:34,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:41:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 1798 states, 1766 states have (on average 1.962061155152888) internal successors, (3465), 1769 states have internal predecessors, (3465), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-23 15:41:34,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 15:41:34,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:34,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:34,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:34,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:34,870 INFO L85 PathProgramCache]: Analyzing trace with hash 372455490, now seen corresponding path program 1 times [2022-11-23 15:41:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:34,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385619801] [2022-11-23 15:41:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:35,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385619801] [2022-11-23 15:41:35,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385619801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:35,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:35,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:41:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588272856] [2022-11-23 15:41:35,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:35,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:41:35,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:41:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:41:35,532 INFO L87 Difference]: Start difference. First operand has 1798 states, 1766 states have (on average 1.962061155152888) internal successors, (3465), 1769 states have internal predecessors, (3465), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:41:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:36,851 INFO L93 Difference]: Finished difference Result 3734 states and 7259 transitions. [2022-11-23 15:41:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:41:36,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2022-11-23 15:41:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:36,881 INFO L225 Difference]: With dead ends: 3734 [2022-11-23 15:41:36,881 INFO L226 Difference]: Without dead ends: 1935 [2022-11-23 15:41:36,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:41:36,897 INFO L413 NwaCegarLoop]: 3421 mSDtfsCounter, 3680 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 6756 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:36,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 6756 Invalid, 692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 15:41:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2022-11-23 15:41:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1934. [2022-11-23 15:41:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1878 states have (on average 1.9297124600638977) internal successors, (3624), 1881 states have internal predecessors, (3624), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-23 15:41:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3708 transitions. [2022-11-23 15:41:37,042 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3708 transitions. Word has length 58 [2022-11-23 15:41:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:37,043 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 3708 transitions. [2022-11-23 15:41:37,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:41:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3708 transitions. [2022-11-23 15:41:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:41:37,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:37,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:37,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:41:37,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash -768940363, now seen corresponding path program 1 times [2022-11-23 15:41:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:37,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896827222] [2022-11-23 15:41:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:37,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:41:37,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:37,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896827222] [2022-11-23 15:41:37,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896827222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:37,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144268222] [2022-11-23 15:41:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:37,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:37,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:37,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:37,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:41:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:37,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:41:37,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 15:41:37,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:41:37,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144268222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:37,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:41:37,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 15:41:37,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110561905] [2022-11-23 15:41:37,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:37,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:37,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:37,652 INFO L87 Difference]: Start difference. First operand 1934 states and 3708 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:38,186 INFO L93 Difference]: Finished difference Result 2503 states and 4585 transitions. [2022-11-23 15:41:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:38,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-23 15:41:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:38,199 INFO L225 Difference]: With dead ends: 2503 [2022-11-23 15:41:38,199 INFO L226 Difference]: Without dead ends: 2215 [2022-11-23 15:41:38,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:38,203 INFO L413 NwaCegarLoop]: 3292 mSDtfsCounter, 3471 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:38,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 3472 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:41:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-11-23 15:41:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2211. [2022-11-23 15:41:38,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2107 states have (on average 1.8818224964404366) internal successors, (3965), 2111 states have internal predecessors, (3965), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-23 15:41:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 4121 transitions. [2022-11-23 15:41:38,278 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 4121 transitions. Word has length 115 [2022-11-23 15:41:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:38,279 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 4121 transitions. [2022-11-23 15:41:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 4121 transitions. [2022-11-23 15:41:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:41:38,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:38,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:38,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:38,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:38,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1505508279, now seen corresponding path program 1 times [2022-11-23 15:41:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:38,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611764795] [2022-11-23 15:41:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:41:38,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:38,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611764795] [2022-11-23 15:41:38,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611764795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:38,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687310374] [2022-11-23 15:41:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:38,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:38,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:38,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:38,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:41:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:38,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:41:38,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:41:39,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:41:39,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687310374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:39,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:41:39,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 15:41:39,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619471711] [2022-11-23 15:41:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:39,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:39,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:39,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:39,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:39,039 INFO L87 Difference]: Start difference. First operand 2211 states and 4121 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:39,580 INFO L93 Difference]: Finished difference Result 3328 states and 5836 transitions. [2022-11-23 15:41:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-23 15:41:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:39,594 INFO L225 Difference]: With dead ends: 3328 [2022-11-23 15:41:39,595 INFO L226 Difference]: Without dead ends: 2763 [2022-11-23 15:41:39,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:39,599 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3465 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:39,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:41:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-11-23 15:41:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2757. [2022-11-23 15:41:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2559 states have (on average 1.8112543962485346) internal successors, (4635), 2565 states have internal predecessors, (4635), 148 states have call successors, (148), 48 states have call predecessors, (148), 48 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2022-11-23 15:41:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4931 transitions. [2022-11-23 15:41:39,696 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4931 transitions. Word has length 115 [2022-11-23 15:41:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:39,697 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 4931 transitions. [2022-11-23 15:41:39,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4931 transitions. [2022-11-23 15:41:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:41:39,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:39,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:39,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:39,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:39,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:39,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:39,909 INFO L85 PathProgramCache]: Analyzing trace with hash -366347719, now seen corresponding path program 1 times [2022-11-23 15:41:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:39,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786812148] [2022-11-23 15:41:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:39,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:41:40,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:40,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786812148] [2022-11-23 15:41:40,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786812148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:40,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131972505] [2022-11-23 15:41:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:40,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:40,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:40,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:40,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:41:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:40,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:41:40,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 15:41:40,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:41:40,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131972505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:40,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:41:40,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 15:41:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259226026] [2022-11-23 15:41:40,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:40,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:40,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:40,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:40,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:40,412 INFO L87 Difference]: Start difference. First operand 2757 states and 4931 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:40,957 INFO L93 Difference]: Finished difference Result 4954 states and 8288 transitions. [2022-11-23 15:41:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:40,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-23 15:41:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:40,983 INFO L225 Difference]: With dead ends: 4954 [2022-11-23 15:41:40,984 INFO L226 Difference]: Without dead ends: 3843 [2022-11-23 15:41:41,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:41,128 INFO L413 NwaCegarLoop]: 3290 mSDtfsCounter, 3474 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:41,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 3470 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:41:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2022-11-23 15:41:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3833. [2022-11-23 15:41:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3451 states have (on average 1.724427702115329) internal successors, (5951), 3461 states have internal predecessors, (5951), 284 states have call successors, (284), 96 states have call predecessors, (284), 96 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2022-11-23 15:41:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 6519 transitions. [2022-11-23 15:41:41,329 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 6519 transitions. Word has length 115 [2022-11-23 15:41:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:41,331 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 6519 transitions. [2022-11-23 15:41:41,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 6519 transitions. [2022-11-23 15:41:41,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:41:41,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:41,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:41,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:41,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:41,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:41,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash 329084407, now seen corresponding path program 1 times [2022-11-23 15:41:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:41,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179178302] [2022-11-23 15:41:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:41,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:41:41,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179178302] [2022-11-23 15:41:41,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179178302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:41,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120828259] [2022-11-23 15:41:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:41,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:41,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:41,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:41,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:41:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:41,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:41:41,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:41:41,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:41:41,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120828259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:41,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:41:41,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 15:41:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418309220] [2022-11-23 15:41:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:41,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:41,994 INFO L87 Difference]: Start difference. First operand 3833 states and 6519 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:42,641 INFO L93 Difference]: Finished difference Result 8158 states and 13092 transitions. [2022-11-23 15:41:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:42,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-23 15:41:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:42,671 INFO L225 Difference]: With dead ends: 8158 [2022-11-23 15:41:42,672 INFO L226 Difference]: Without dead ends: 5971 [2022-11-23 15:41:42,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:42,682 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3459 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:42,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:41:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2022-11-23 15:41:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5953. [2022-11-23 15:41:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5953 states, 5211 states have (on average 1.637881404720783) internal successors, (8535), 5229 states have internal predecessors, (8535), 548 states have call successors, (548), 192 states have call predecessors, (548), 192 states have return successors, (548), 532 states have call predecessors, (548), 548 states have call successors, (548) [2022-11-23 15:41:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 9631 transitions. [2022-11-23 15:41:42,946 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 9631 transitions. Word has length 115 [2022-11-23 15:41:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:42,946 INFO L495 AbstractCegarLoop]: Abstraction has 5953 states and 9631 transitions. [2022-11-23 15:41:42,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 9631 transitions. [2022-11-23 15:41:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:41:42,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:42,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:42,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:43,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:43,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash -19614215, now seen corresponding path program 1 times [2022-11-23 15:41:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:43,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122260223] [2022-11-23 15:41:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:41:43,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:43,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122260223] [2022-11-23 15:41:43,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122260223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:43,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799882653] [2022-11-23 15:41:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:43,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:43,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:41:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:43,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:41:43,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:41:43,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:41:43,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799882653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:43,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:41:43,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 15:41:43,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020847687] [2022-11-23 15:41:43,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:43,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:43,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:43,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:43,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:43,597 INFO L87 Difference]: Start difference. First operand 5953 states and 9631 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:44,433 INFO L93 Difference]: Finished difference Result 14470 states and 22500 transitions. [2022-11-23 15:41:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:44,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-23 15:41:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:44,483 INFO L225 Difference]: With dead ends: 14470 [2022-11-23 15:41:44,484 INFO L226 Difference]: Without dead ends: 10163 [2022-11-23 15:41:44,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:41:44,499 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3453 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:44,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3453 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:41:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2022-11-23 15:41:44,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10129. [2022-11-23 15:41:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10129 states, 8683 states have (on average 1.5670851088333526) internal successors, (13607), 8717 states have internal predecessors, (13607), 1060 states have call successors, (1060), 384 states have call predecessors, (1060), 384 states have return successors, (1060), 1028 states have call predecessors, (1060), 1060 states have call successors, (1060) [2022-11-23 15:41:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10129 states to 10129 states and 15727 transitions. [2022-11-23 15:41:44,925 INFO L78 Accepts]: Start accepts. Automaton has 10129 states and 15727 transitions. Word has length 115 [2022-11-23 15:41:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:44,925 INFO L495 AbstractCegarLoop]: Abstraction has 10129 states and 15727 transitions. [2022-11-23 15:41:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:41:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10129 states and 15727 transitions. [2022-11-23 15:41:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:41:44,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:44,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:44,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:45,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fa013d-e18d-404e-884e-171d1a64385e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 15:41:45,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1461364603, now seen corresponding path program 1 times [2022-11-23 15:41:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:45,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471892772] [2022-11-23 15:41:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-23 15:41:45,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:45,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471892772] [2022-11-23 15:41:45,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471892772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:45,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:45,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:41:45,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467509367] [2022-11-23 15:41:45,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:45,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:45,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:45,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:45,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:45,266 INFO L87 Difference]: Start difference. First operand 10129 states and 15727 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:41:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:46,305 INFO L93 Difference]: Finished difference Result 16723 states and 25776 transitions. [2022-11-23 15:41:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-11-23 15:41:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:46,373 INFO L225 Difference]: With dead ends: 16723 [2022-11-23 15:41:46,374 INFO L226 Difference]: Without dead ends: 12401 [2022-11-23 15:41:46,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:46,391 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 100 mSDsluCounter, 3254 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6602 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:46,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 6602 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:41:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12401 states. [2022-11-23 15:41:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12401 to 11713. [2022-11-23 15:41:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11713 states, 10203 states have (on average 1.5908066255023032) internal successors, (16231), 10237 states have internal predecessors, (16231), 1092 states have call successors, (1092), 416 states have call predecessors, (1092), 416 states have return successors, (1092), 1060 states have call predecessors, (1092), 1092 states have call successors, (1092) [2022-11-23 15:41:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11713 states to 11713 states and 18415 transitions. [2022-11-23 15:41:47,123 INFO L78 Accepts]: Start accepts. Automaton has 11713 states and 18415 transitions. Word has length 115 [2022-11-23 15:41:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:47,125 INFO L495 AbstractCegarLoop]: Abstraction has 11713 states and 18415 transitions. [2022-11-23 15:41:47,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:41:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 11713 states and 18415 transitions. [2022-11-23 15:41:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 15:41:47,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:47,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:47,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:41:47,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:47,160 INFO L85 PathProgramCache]: Analyzing trace with hash -97988855, now seen corresponding path program 1 times [2022-11-23 15:41:47,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:47,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121219898] [2022-11-23 15:41:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:47,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-23 15:41:47,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:47,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121219898] [2022-11-23 15:41:47,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121219898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:47,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:47,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:41:47,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850782081] [2022-11-23 15:41:47,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:47,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:47,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:47,304 INFO L87 Difference]: Start difference. First operand 11713 states and 18415 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:41:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:48,779 INFO L93 Difference]: Finished difference Result 31558 states and 48788 transitions. [2022-11-23 15:41:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:48,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-23 15:41:48,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:48,871 INFO L225 Difference]: With dead ends: 31558 [2022-11-23 15:41:48,872 INFO L226 Difference]: Without dead ends: 21491 [2022-11-23 15:41:48,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:48,909 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3461 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:48,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3461 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:41:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21491 states. [2022-11-23 15:41:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21491 to 21393. [2022-11-23 15:41:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21393 states, 18443 states have (on average 1.5480670172965352) internal successors, (28551), 18509 states have internal predecessors, (28551), 2116 states have call successors, (2116), 832 states have call predecessors, (2116), 832 states have return successors, (2116), 2052 states have call predecessors, (2116), 2116 states have call successors, (2116) [2022-11-23 15:41:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21393 states to 21393 states and 32783 transitions. [2022-11-23 15:41:50,080 INFO L78 Accepts]: Start accepts. Automaton has 21393 states and 32783 transitions. Word has length 156 [2022-11-23 15:41:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:50,082 INFO L495 AbstractCegarLoop]: Abstraction has 21393 states and 32783 transitions. [2022-11-23 15:41:50,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:41:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 21393 states and 32783 transitions. [2022-11-23 15:41:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 15:41:50,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:50,134 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:50,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:41:50,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:50,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:50,135 INFO L85 PathProgramCache]: Analyzing trace with hash 965545190, now seen corresponding path program 1 times [2022-11-23 15:41:50,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:50,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080773176] [2022-11-23 15:41:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:50,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-23 15:41:50,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:50,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080773176] [2022-11-23 15:41:50,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080773176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:50,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:50,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:41:50,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552867838] [2022-11-23 15:41:50,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:50,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:50,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:50,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:50,268 INFO L87 Difference]: Start difference. First operand 21393 states and 32783 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:41:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:52,255 INFO L93 Difference]: Finished difference Result 60310 states and 91924 transitions. [2022-11-23 15:41:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-23 15:41:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:52,427 INFO L225 Difference]: With dead ends: 60310 [2022-11-23 15:41:52,427 INFO L226 Difference]: Without dead ends: 40563 [2022-11-23 15:41:52,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:52,501 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3463 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:52,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:41:52,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40563 states. [2022-11-23 15:41:54,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40563 to 40369. [2022-11-23 15:41:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40369 states, 34603 states have (on average 1.5186833511545241) internal successors, (52551), 34733 states have internal predecessors, (52551), 4100 states have call successors, (4100), 1664 states have call predecessors, (4100), 1664 states have return successors, (4100), 3972 states have call predecessors, (4100), 4100 states have call successors, (4100) [2022-11-23 15:41:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40369 states to 40369 states and 60751 transitions. [2022-11-23 15:41:54,694 INFO L78 Accepts]: Start accepts. Automaton has 40369 states and 60751 transitions. Word has length 156 [2022-11-23 15:41:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:54,695 INFO L495 AbstractCegarLoop]: Abstraction has 40369 states and 60751 transitions. [2022-11-23 15:41:54,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:41:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 40369 states and 60751 transitions. [2022-11-23 15:41:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 15:41:54,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:54,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:54,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:41:54,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:54,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:54,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1925366565, now seen corresponding path program 1 times [2022-11-23 15:41:54,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:54,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383302126] [2022-11-23 15:41:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-23 15:41:54,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:54,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383302126] [2022-11-23 15:41:54,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383302126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:41:54,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:41:54,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:41:54,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236463859] [2022-11-23 15:41:54,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:41:54,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:41:54,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:54,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:41:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:54,973 INFO L87 Difference]: Start difference. First operand 40369 states and 60751 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:41:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:58,749 INFO L93 Difference]: Finished difference Result 116662 states and 175828 transitions. [2022-11-23 15:41:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:41:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-23 15:41:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:59,288 INFO L225 Difference]: With dead ends: 116662 [2022-11-23 15:41:59,288 INFO L226 Difference]: Without dead ends: 77939 [2022-11-23 15:41:59,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:41:59,402 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3465 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:59,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:41:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77939 states. [2022-11-23 15:42:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77939 to 77553. [2022-11-23 15:42:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77553 states, 66283 states have (on average 1.4976841724122325) internal successors, (99271), 66541 states have internal predecessors, (99271), 7940 states have call successors, (7940), 3328 states have call predecessors, (7940), 3328 states have return successors, (7940), 7684 states have call predecessors, (7940), 7940 states have call successors, (7940) [2022-11-23 15:42:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77553 states to 77553 states and 115151 transitions. [2022-11-23 15:42:03,255 INFO L78 Accepts]: Start accepts. Automaton has 77553 states and 115151 transitions. Word has length 156 [2022-11-23 15:42:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:03,256 INFO L495 AbstractCegarLoop]: Abstraction has 77553 states and 115151 transitions. [2022-11-23 15:42:03,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:42:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 77553 states and 115151 transitions. [2022-11-23 15:42:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 15:42:03,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:03,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:42:03,926 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:03,927 INFO L85 PathProgramCache]: Analyzing trace with hash 132817514, now seen corresponding path program 1 times [2022-11-23 15:42:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:03,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850735260] [2022-11-23 15:42:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-23 15:42:04,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:04,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850735260] [2022-11-23 15:42:04,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850735260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:04,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:04,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:42:04,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555060811] [2022-11-23 15:42:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:04,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:42:04,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:42:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:04,044 INFO L87 Difference]: Start difference. First operand 77553 states and 115151 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:42:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:10,824 INFO L93 Difference]: Finished difference Result 227062 states and 338900 transitions. [2022-11-23 15:42:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:42:10,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-23 15:42:10,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:11,740 INFO L225 Difference]: With dead ends: 227062 [2022-11-23 15:42:11,740 INFO L226 Difference]: Without dead ends: 151155 [2022-11-23 15:42:11,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:11,964 INFO L413 NwaCegarLoop]: 3272 mSDtfsCounter, 3468 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:11,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 3452 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:42:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151155 states.