./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.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_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/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_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/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_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/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 b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 --- 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 13:55:14,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:55:14,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:55:14,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:55:14,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:55:14,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:55:14,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:55:14,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:55:14,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:55:14,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:55:14,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:55:14,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:55:14,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:55:14,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:55:14,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:55:14,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:55:14,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:55:14,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:55:14,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:55:14,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:55:14,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:55:14,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:55:14,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:55:14,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:55:14,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:55:14,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:55:14,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:55:14,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:55:14,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:55:14,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:55:14,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:55:14,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:55:14,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:55:14,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:55:14,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:55:14,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:55:14,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:55:14,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:55:14,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:55:14,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:55:14,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:55:14,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:55:14,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:55:14,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:55:14,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:55:14,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:55:14,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:55:14,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:55:14,988 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:55:14,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:55:14,989 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:55:14,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:55:14,990 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:55:14,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:55:14,991 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:55:14,991 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:55:14,991 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:55:14,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:55:14,992 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:55:14,992 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:55:14,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:55:14,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:55:14,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:55:14,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:55:14,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:55:14,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:55:14,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:55:14,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:55:14,996 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:55:14,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:55:14,996 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:55:14,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:55:14,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:55:14,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:55:14,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:14,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:55:14,998 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:55:14,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:55:14,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:55:14,999 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:55:14,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:55:14,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:55:14,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:55:15,001 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_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 [2022-11-23 13:55:15,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:55:15,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:55:15,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:55:15,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:55:15,388 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:55:15,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2022-11-23 13:55:18,582 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:55:19,405 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:55:19,405 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2022-11-23 13:55:19,458 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/data/7e0b213cc/5add03c1c2944acfaa7d8c05511d4c05/FLAG38a4a8ce6 [2022-11-23 13:55:19,478 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/data/7e0b213cc/5add03c1c2944acfaa7d8c05511d4c05 [2022-11-23 13:55:19,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:55:19,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:55:19,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:55:19,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:55:19,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:55:19,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:19" (1/1) ... [2022-11-23 13:55:19,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5251bf94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19, skipping insertion in model container [2022-11-23 13:55:19,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:19" (1/1) ... [2022-11-23 13:55:19,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:55:19,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:55:22,278 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_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[380323,380336] [2022-11-23 13:55:22,319 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_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[383339,383352] [2022-11-23 13:55:22,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:55:22,677 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:55:24,015 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_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[380323,380336] [2022-11-23 13:55:24,025 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_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[383339,383352] [2022-11-23 13:55:24,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:55:24,139 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:55:24,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24 WrapperNode [2022-11-23 13:55:24,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:55:24,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:24,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:55:24,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:55:24,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:24,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:24,863 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-11-23 13:55:24,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:24,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:55:24,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:55:24,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:55:24,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:24,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:25,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:25,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:25,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:25,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:25,408 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:25,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:25,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:55:25,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:55:25,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:55:25,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:55:25,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (1/1) ... [2022-11-23 13:55:25,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:25,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:25,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:55:25,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:55:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:55:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 13:55:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 13:55:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 13:55:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 13:55:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 13:55:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 13:55:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-23 13:55:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-23 13:55:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 13:55:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 13:55:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 13:55:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 13:55:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 13:55:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 13:55:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:55:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:55:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:55:25,881 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:55:25,884 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:55:35,717 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:55:38,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:55:38,641 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-23 13:55:38,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:38 BoogieIcfgContainer [2022-11-23 13:55:38,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:55:38,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:55:38,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:55:38,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:55:38,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:19" (1/3) ... [2022-11-23 13:55:38,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681de1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:38, skipping insertion in model container [2022-11-23 13:55:38,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:24" (2/3) ... [2022-11-23 13:55:38,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681de1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:38, skipping insertion in model container [2022-11-23 13:55:38,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:38" (3/3) ... [2022-11-23 13:55:38,663 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-2.c [2022-11-23 13:55:38,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:55:38,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 13:55:38,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:55:38,819 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;@9eae8b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:55:38,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 13:55:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 1804 states, 1769 states have (on average 1.9621254946297344) internal successors, (3471), 1774 states have internal predecessors, (3471), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-23 13:55:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 13:55:38,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:38,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:38,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:38,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1498476499, now seen corresponding path program 1 times [2022-11-23 13:55:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:38,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251677526] [2022-11-23 13:55:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:39,404 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 13:55:39,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:39,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251677526] [2022-11-23 13:55:39,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251677526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:39,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:39,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:55:39,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445716608] [2022-11-23 13:55:39,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:39,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:55:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:39,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:55:39,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:55:39,479 INFO L87 Difference]: Start difference. First operand has 1804 states, 1769 states have (on average 1.9621254946297344) internal successors, (3471), 1774 states have internal predecessors, (3471), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 13:55:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:40,837 INFO L93 Difference]: Finished difference Result 3745 states and 7279 transitions. [2022-11-23 13:55:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:55:40,840 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2022-11-23 13:55:40,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:40,871 INFO L225 Difference]: With dead ends: 3745 [2022-11-23 13:55:40,872 INFO L226 Difference]: Without dead ends: 1940 [2022-11-23 13:55:40,884 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 13:55:40,889 INFO L413 NwaCegarLoop]: 3428 mSDtfsCounter, 3688 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3688 SdHoareTripleChecker+Valid, 6768 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:40,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3688 Valid, 6768 Invalid, 696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 13:55:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2022-11-23 13:55:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1939. [2022-11-23 13:55:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1881 states have (on average 1.9298245614035088) internal successors, (3630), 1885 states have internal predecessors, (3630), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-23 13:55:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3716 transitions. [2022-11-23 13:55:41,072 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3716 transitions. Word has length 59 [2022-11-23 13:55:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:41,073 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 3716 transitions. [2022-11-23 13:55:41,073 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 13:55:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3716 transitions. [2022-11-23 13:55:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 13:55:41,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:41,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:41,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:55:41,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:41,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1924827821, now seen corresponding path program 1 times [2022-11-23 13:55:41,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:41,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254420172] [2022-11-23 13:55:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:41,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:41,442 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 13:55:41,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254420172] [2022-11-23 13:55:41,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254420172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:55:41,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722762380] [2022-11-23 13:55:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:41,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:41,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:41,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:41,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:55:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:41,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:55:41,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:41,964 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 13:55:41,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:55:41,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722762380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:41,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:55:41,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 13:55:41,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285954199] [2022-11-23 13:55:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:41,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:41,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:55:41,993 INFO L87 Difference]: Start difference. First operand 1939 states and 3716 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:42,650 INFO L93 Difference]: Finished difference Result 2518 states and 4609 transitions. [2022-11-23 13:55:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:42,651 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-23 13:55:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:42,667 INFO L225 Difference]: With dead ends: 2518 [2022-11-23 13:55:42,667 INFO L226 Difference]: Without dead ends: 2225 [2022-11-23 13:55:42,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 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 13:55:42,672 INFO L413 NwaCegarLoop]: 3306 mSDtfsCounter, 3473 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3473 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:42,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3473 Valid, 3493 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:55:42,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-23 13:55:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2219. [2022-11-23 13:55:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 2113 states have (on average 1.882158069096072) internal successors, (3977), 2118 states have internal predecessors, (3977), 80 states have call successors, (80), 25 states have call predecessors, (80), 24 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-23 13:55:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 4135 transitions. [2022-11-23 13:55:42,761 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 4135 transitions. Word has length 116 [2022-11-23 13:55:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:42,762 INFO L495 AbstractCegarLoop]: Abstraction has 2219 states and 4135 transitions. [2022-11-23 13:55:42,762 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 4135 transitions. [2022-11-23 13:55:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 13:55:42,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:42,767 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:42,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:55:42,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:42,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash -268133269, now seen corresponding path program 1 times [2022-11-23 13:55:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:42,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270228115] [2022-11-23 13:55:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:43,159 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 13:55:43,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:43,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270228115] [2022-11-23 13:55:43,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270228115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:55:43,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251036597] [2022-11-23 13:55:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:43,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:43,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:43,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:43,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:55:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:43,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:55:43,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:43,467 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 13:55:43,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:55:43,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251036597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:43,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:55:43,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 13:55:43,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026338779] [2022-11-23 13:55:43,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:43,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:43,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:43,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:55:43,470 INFO L87 Difference]: Start difference. First operand 2219 states and 4135 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:44,037 INFO L93 Difference]: Finished difference Result 3352 states and 5878 transitions. [2022-11-23 13:55:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:44,038 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-23 13:55:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:44,051 INFO L225 Difference]: With dead ends: 3352 [2022-11-23 13:55:44,051 INFO L226 Difference]: Without dead ends: 2779 [2022-11-23 13:55:44,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 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 13:55:44,056 INFO L413 NwaCegarLoop]: 3294 mSDtfsCounter, 3479 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 3481 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 13:55:44,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 3481 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 13:55:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2022-11-23 13:55:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2771. [2022-11-23 13:55:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2571 states have (on average 1.8121353558926487) internal successors, (4659), 2578 states have internal predecessors, (4659), 150 states have call successors, (150), 49 states have call predecessors, (150), 48 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2022-11-23 13:55:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4957 transitions. [2022-11-23 13:55:44,177 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4957 transitions. Word has length 116 [2022-11-23 13:55:44,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:44,177 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 4957 transitions. [2022-11-23 13:55:44,178 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4957 transitions. [2022-11-23 13:55:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 13:55:44,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:44,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:44,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:55:44,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 13:55:44,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:44,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1520297897, now seen corresponding path program 1 times [2022-11-23 13:55:44,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:44,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951399402] [2022-11-23 13:55:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:44,547 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 13:55:44,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:44,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951399402] [2022-11-23 13:55:44,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951399402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:55:44,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515558742] [2022-11-23 13:55:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:44,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:44,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:44,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:44,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:55:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:44,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:55:44,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:44,844 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 13:55:44,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:55:44,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515558742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:44,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:55:44,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 13:55:44,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069447667] [2022-11-23 13:55:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:55:44,854 INFO L87 Difference]: Start difference. First operand 2771 states and 4957 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:45,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:45,441 INFO L93 Difference]: Finished difference Result 4996 states and 8366 transitions. [2022-11-23 13:55:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:45,442 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-23 13:55:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:45,461 INFO L225 Difference]: With dead ends: 4996 [2022-11-23 13:55:45,462 INFO L226 Difference]: Without dead ends: 3871 [2022-11-23 13:55:45,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 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 13:55:45,472 INFO L413 NwaCegarLoop]: 3304 mSDtfsCounter, 3482 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3482 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:45,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3482 Valid, 3491 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 13:55:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2022-11-23 13:55:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3859. [2022-11-23 13:55:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3475 states have (on average 1.7263309352517986) internal successors, (5999), 3486 states have internal predecessors, (5999), 286 states have call successors, (286), 97 states have call predecessors, (286), 96 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2022-11-23 13:55:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 6569 transitions. [2022-11-23 13:55:45,679 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 6569 transitions. Word has length 116 [2022-11-23 13:55:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:45,681 INFO L495 AbstractCegarLoop]: Abstraction has 3859 states and 6569 transitions. [2022-11-23 13:55:45,681 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 6569 transitions. [2022-11-23 13:55:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 13:55:45,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:45,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:45,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:55:45,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:45,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1603857323, now seen corresponding path program 1 times [2022-11-23 13:55:45,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:45,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22632534] [2022-11-23 13:55:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:45,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:46,071 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 13:55:46,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:46,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22632534] [2022-11-23 13:55:46,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22632534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:55:46,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815309788] [2022-11-23 13:55:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:46,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:46,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:46,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:46,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:55:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:46,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:55:46,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:46,511 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 13:55:46,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:55:46,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815309788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:46,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:55:46,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 13:55:46,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354650455] [2022-11-23 13:55:46,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:46,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:46,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:55:46,515 INFO L87 Difference]: Start difference. First operand 3859 states and 6569 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:47,315 INFO L93 Difference]: Finished difference Result 8236 states and 13242 transitions. [2022-11-23 13:55:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:47,316 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-23 13:55:47,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:47,351 INFO L225 Difference]: With dead ends: 8236 [2022-11-23 13:55:47,351 INFO L226 Difference]: Without dead ends: 6023 [2022-11-23 13:55:47,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 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 13:55:47,364 INFO L413 NwaCegarLoop]: 3269 mSDtfsCounter, 3461 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:47,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3461 Valid, 3456 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:55:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6023 states. [2022-11-23 13:55:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6023 to 6003. [2022-11-23 13:55:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 5259 states have (on average 1.641186537364518) internal successors, (8631), 5278 states have internal predecessors, (8631), 550 states have call successors, (550), 193 states have call predecessors, (550), 192 states have return successors, (548), 532 states have call predecessors, (548), 548 states have call successors, (548) [2022-11-23 13:55:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 9729 transitions. [2022-11-23 13:55:47,750 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 9729 transitions. Word has length 116 [2022-11-23 13:55:47,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:47,751 INFO L495 AbstractCegarLoop]: Abstraction has 6003 states and 9729 transitions. [2022-11-23 13:55:47,752 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 9729 transitions. [2022-11-23 13:55:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 13:55:47,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:47,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:47,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:55:47,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:47,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:47,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash 269560425, now seen corresponding path program 1 times [2022-11-23 13:55:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:47,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332369282] [2022-11-23 13:55:47,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:47,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:48,176 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 13:55:48,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:48,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332369282] [2022-11-23 13:55:48,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332369282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:55:48,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233269119] [2022-11-23 13:55:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:48,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:48,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:48,180 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:48,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 13:55:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:48,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:55:48,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:48,489 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 13:55:48,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:55:48,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233269119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:48,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:55:48,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-23 13:55:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162193480] [2022-11-23 13:55:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:48,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:48,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:55:48,493 INFO L87 Difference]: Start difference. First operand 6003 states and 9729 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:49,566 INFO L93 Difference]: Finished difference Result 14620 states and 22794 transitions. [2022-11-23 13:55:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:49,567 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-23 13:55:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:49,650 INFO L225 Difference]: With dead ends: 14620 [2022-11-23 13:55:49,652 INFO L226 Difference]: Without dead ends: 10263 [2022-11-23 13:55:49,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 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 13:55:49,676 INFO L413 NwaCegarLoop]: 3269 mSDtfsCounter, 3467 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3467 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:49,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3467 Valid, 3456 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:55:49,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10263 states. [2022-11-23 13:55:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10263 to 10227. [2022-11-23 13:55:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10227 states, 8779 states have (on average 1.5718191137942819) internal successors, (13799), 8814 states have internal predecessors, (13799), 1062 states have call successors, (1062), 385 states have call predecessors, (1062), 384 states have return successors, (1060), 1028 states have call predecessors, (1060), 1060 states have call successors, (1060) [2022-11-23 13:55:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10227 states to 10227 states and 15921 transitions. [2022-11-23 13:55:50,307 INFO L78 Accepts]: Start accepts. Automaton has 10227 states and 15921 transitions. Word has length 116 [2022-11-23 13:55:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:50,309 INFO L495 AbstractCegarLoop]: Abstraction has 10227 states and 15921 transitions. [2022-11-23 13:55:50,310 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:55:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 10227 states and 15921 transitions. [2022-11-23 13:55:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 13:55:50,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:50,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:50,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 13:55:50,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ab3cc0-6c6d-4de6-a426-9bd46a02cb78/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:50,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1950162265, now seen corresponding path program 1 times [2022-11-23 13:55:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:50,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001159331] [2022-11-23 13:55:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:50,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:50,655 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 13:55:50,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:50,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001159331] [2022-11-23 13:55:50,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001159331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:50,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:50,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:55:50,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836982700] [2022-11-23 13:55:50,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:50,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:50,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:50,660 INFO L87 Difference]: Start difference. First operand 10227 states and 15921 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 13:55:51,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:51,676 INFO L93 Difference]: Finished difference Result 16919 states and 26164 transitions. [2022-11-23 13:55:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:51,677 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), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-11-23 13:55:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:51,742 INFO L225 Difference]: With dead ends: 16919 [2022-11-23 13:55:51,743 INFO L226 Difference]: Without dead ends: 12499 [2022-11-23 13:55:51,762 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 13:55:51,763 INFO L413 NwaCegarLoop]: 3355 mSDtfsCounter, 100 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6616 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:51,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 6616 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 13:55:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12499 states. [2022-11-23 13:55:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12499 to 11811. [2022-11-23 13:55:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11811 states, 10299 states have (on average 1.5946208369744634) internal successors, (16423), 10334 states have internal predecessors, (16423), 1094 states have call successors, (1094), 417 states have call predecessors, (1094), 416 states have return successors, (1092), 1060 states have call predecessors, (1092), 1092 states have call successors, (1092) [2022-11-23 13:55:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11811 states to 11811 states and 18609 transitions. [2022-11-23 13:55:52,350 INFO L78 Accepts]: Start accepts. Automaton has 11811 states and 18609 transitions. Word has length 116 [2022-11-23 13:55:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:52,351 INFO L495 AbstractCegarLoop]: Abstraction has 11811 states and 18609 transitions. [2022-11-23 13:55:52,351 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), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 13:55:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 11811 states and 18609 transitions. [2022-11-23 13:55:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 13:55:52,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:52,384 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, 1] [2022-11-23 13:55:52,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:55:52,385 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1245908620, now seen corresponding path program 1 times [2022-11-23 13:55:52,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:52,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473277084] [2022-11-23 13:55:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:52,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:52,511 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 13:55:52,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:52,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473277084] [2022-11-23 13:55:52,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473277084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:52,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:52,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:55:52,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135843056] [2022-11-23 13:55:52,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:52,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:52,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:52,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:52,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:52,514 INFO L87 Difference]: Start difference. First operand 11811 states and 18609 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 13:55:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:53,964 INFO L93 Difference]: Finished difference Result 31852 states and 49370 transitions. [2022-11-23 13:55:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:53,965 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2022-11-23 13:55:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:54,072 INFO L225 Difference]: With dead ends: 31852 [2022-11-23 13:55:54,072 INFO L226 Difference]: Without dead ends: 21687 [2022-11-23 13:55:54,113 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 13:55:54,114 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 3469 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3469 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:54,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3469 Valid, 3458 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:55:54,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21687 states. [2022-11-23 13:55:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21687 to 21587. [2022-11-23 13:55:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21587 states, 18635 states have (on average 1.5527233700026832) internal successors, (28935), 18702 states have internal predecessors, (28935), 2118 states have call successors, (2118), 833 states have call predecessors, (2118), 832 states have return successors, (2116), 2052 states have call predecessors, (2116), 2116 states have call successors, (2116) [2022-11-23 13:55:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21587 states to 21587 states and 33169 transitions. [2022-11-23 13:55:55,411 INFO L78 Accepts]: Start accepts. Automaton has 21587 states and 33169 transitions. Word has length 157 [2022-11-23 13:55:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:55,413 INFO L495 AbstractCegarLoop]: Abstraction has 21587 states and 33169 transitions. [2022-11-23 13:55:55,413 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 13:55:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 21587 states and 33169 transitions. [2022-11-23 13:55:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 13:55:55,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:55,477 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, 1] [2022-11-23 13:55:55,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:55:55,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 604208752, now seen corresponding path program 1 times [2022-11-23 13:55:55,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:55,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378393196] [2022-11-23 13:55:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:55,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:55,628 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 13:55:55,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:55,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378393196] [2022-11-23 13:55:55,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378393196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:55,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:55,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:55:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617534157] [2022-11-23 13:55:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:55,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:55,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:55,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:55,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:55,632 INFO L87 Difference]: Start difference. First operand 21587 states and 33169 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 13:55:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:58,045 INFO L93 Difference]: Finished difference Result 60892 states and 93082 transitions. [2022-11-23 13:55:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:58,046 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2022-11-23 13:55:58,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:58,285 INFO L225 Difference]: With dead ends: 60892 [2022-11-23 13:55:58,285 INFO L226 Difference]: Without dead ends: 40951 [2022-11-23 13:55:58,372 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 13:55:58,375 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 3471 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:58,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 3458 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:55:58,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40951 states. [2022-11-23 13:56:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40951 to 40755. [2022-11-23 13:56:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40755 states, 34987 states have (on average 1.5239660445308256) internal successors, (53319), 35118 states have internal predecessors, (53319), 4102 states have call successors, (4102), 1665 states have call predecessors, (4102), 1664 states have return successors, (4100), 3972 states have call predecessors, (4100), 4100 states have call successors, (4100) [2022-11-23 13:56:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40755 states to 40755 states and 61521 transitions. [2022-11-23 13:56:00,780 INFO L78 Accepts]: Start accepts. Automaton has 40755 states and 61521 transitions. Word has length 157 [2022-11-23 13:56:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:00,781 INFO L495 AbstractCegarLoop]: Abstraction has 40755 states and 61521 transitions. [2022-11-23 13:56:00,781 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 13:56:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 40755 states and 61521 transitions. [2022-11-23 13:56:00,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 13:56:00,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:00,918 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, 1] [2022-11-23 13:56:00,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:56:00,918 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1276742809, now seen corresponding path program 1 times [2022-11-23 13:56:00,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:00,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984420150] [2022-11-23 13:56:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:00,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:01,048 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 13:56:01,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:01,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984420150] [2022-11-23 13:56:01,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984420150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:01,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:01,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:56:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025605782] [2022-11-23 13:56:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:01,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:01,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:01,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:01,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:01,051 INFO L87 Difference]: Start difference. First operand 40755 states and 61521 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 13:56:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:04,978 INFO L93 Difference]: Finished difference Result 117820 states and 178138 transitions. [2022-11-23 13:56:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:04,980 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2022-11-23 13:56:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:05,369 INFO L225 Difference]: With dead ends: 117820 [2022-11-23 13:56:05,369 INFO L226 Difference]: Without dead ends: 78711 [2022-11-23 13:56:05,496 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 13:56:05,497 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 3473 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3473 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:05,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3473 Valid, 3458 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:56:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78711 states. [2022-11-23 13:56:09,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78711 to 78323. [2022-11-23 13:56:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78323 states, 67051 states have (on average 1.5034376817646269) internal successors, (100807), 67310 states have internal predecessors, (100807), 7942 states have call successors, (7942), 3329 states have call predecessors, (7942), 3328 states have return successors, (7940), 7684 states have call predecessors, (7940), 7940 states have call successors, (7940) [2022-11-23 13:56:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78323 states to 78323 states and 116689 transitions. [2022-11-23 13:56:10,041 INFO L78 Accepts]: Start accepts. Automaton has 78323 states and 116689 transitions. Word has length 157 [2022-11-23 13:56:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:10,042 INFO L495 AbstractCegarLoop]: Abstraction has 78323 states and 116689 transitions. [2022-11-23 13:56:10,042 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 13:56:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 78323 states and 116689 transitions. [2022-11-23 13:56:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 13:56:10,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:10,273 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, 1] [2022-11-23 13:56:10,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 13:56:10,273 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1920610394, now seen corresponding path program 1 times [2022-11-23 13:56:10,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815810049] [2022-11-23 13:56:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:10,705 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 13:56:10,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:10,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815810049] [2022-11-23 13:56:10,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815810049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:10,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:10,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:56:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371412495] [2022-11-23 13:56:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:10,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:10,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:10,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:10,711 INFO L87 Difference]: Start difference. First operand 78323 states and 116689 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 13:56:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:17,942 INFO L93 Difference]: Finished difference Result 229372 states and 343514 transitions. [2022-11-23 13:56:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:17,968 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2022-11-23 13:56:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:18,738 INFO L225 Difference]: With dead ends: 229372 [2022-11-23 13:56:18,738 INFO L226 Difference]: Without dead ends: 152695 [2022-11-23 13:56:19,042 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 13:56:19,042 INFO L413 NwaCegarLoop]: 3292 mSDtfsCounter, 3476 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:19,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3476 Valid, 3479 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:56:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152695 states.