./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS --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 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 --- 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-8393723 [2022-11-19 07:17:56,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:17:56,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:17:56,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:17:56,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:17:56,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:17:56,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:17:56,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:17:56,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:17:56,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:17:56,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:17:56,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:17:56,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:17:56,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:17:56,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:17:56,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:17:56,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:17:56,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:17:56,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:17:56,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:17:56,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:17:56,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:17:56,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:17:56,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:17:56,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:17:56,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:17:56,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:17:56,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:17:56,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:17:56,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:17:56,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:17:56,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:17:56,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:17:56,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:17:56,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:17:56,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:17:56,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:17:56,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:17:56,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:17:56,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:17:56,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:17:56,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:17:56,963 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:17:56,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:17:56,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:17:56,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:17:56,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:17:56,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:17:56,965 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:17:56,965 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:17:56,966 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:17:56,966 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:17:56,966 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:17:56,966 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:17:56,967 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:17:56,967 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:17:56,967 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:17:56,967 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:17:56,968 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:17:56,968 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:17:56,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:17:56,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:17:56,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:17:56,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:17:56,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:17:56,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:17:56,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:17:56,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:17:56,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:17:56,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:17:56,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:17:56,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:17:56,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:17:56,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:17:56,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:56,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:17:56,973 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:17:56,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:17:56,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:17:56,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:17:56,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:17:56,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:17:56,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:17:56,974 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_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 [2022-11-19 07:17:57,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:17:57,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:17:57,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:17:57,311 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:17:57,312 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:17:57,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2022-11-19 07:17:57,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/data/ed961c87a/d61c9c7b5be44d80a06b12dc82ff631d/FLAGb990d8547 [2022-11-19 07:17:58,495 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:17:58,496 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2022-11-19 07:17:58,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/data/ed961c87a/d61c9c7b5be44d80a06b12dc82ff631d/FLAGb990d8547 [2022-11-19 07:17:58,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/data/ed961c87a/d61c9c7b5be44d80a06b12dc82ff631d [2022-11-19 07:17:58,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:17:58,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:17:58,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:58,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:17:58,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:17:58,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:58" (1/1) ... [2022-11-19 07:17:58,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68520662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:58, skipping insertion in model container [2022-11-19 07:17:58,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:58" (1/1) ... [2022-11-19 07:17:58,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:17:59,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:18:01,736 WARN L234 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_72e02194-31c2-45c7-be45-c2bd3bc53e88/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[380593,380606] [2022-11-19 07:18:01,775 WARN L234 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_72e02194-31c2-45c7-be45-c2bd3bc53e88/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[383339,383352] [2022-11-19 07:18:02,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:18:02,149 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:18:03,498 WARN L234 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_72e02194-31c2-45c7-be45-c2bd3bc53e88/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[380593,380606] [2022-11-19 07:18:03,504 WARN L234 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_72e02194-31c2-45c7-be45-c2bd3bc53e88/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[383339,383352] [2022-11-19 07:18:03,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:18:03,666 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:18:03,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03 WrapperNode [2022-11-19 07:18:03,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:18:03,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:18:03,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:18:03,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:18:03,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:03,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,236 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2022-11-19 07:18:04,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:18:04,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:18:04,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:18:04,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:18:04,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,691 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:18:04,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:18:04,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:18:04,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:18:04,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:18:04,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:04,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:18:05,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:18:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:18:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-19 07:18:05,101 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-19 07:18:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-19 07:18:05,102 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-19 07:18:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-19 07:18:05,102 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-19 07:18:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-19 07:18:05,103 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-19 07:18:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-19 07:18:05,103 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-19 07:18:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-19 07:18:05,103 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-19 07:18:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-19 07:18:05,104 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-19 07:18:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:18:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:18:05,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:18:05,368 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:18:05,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:18:16,132 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:18:19,275 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:18:19,276 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-19 07:18:19,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:18:19 BoogieIcfgContainer [2022-11-19 07:18:19,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:18:19,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:18:19,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:18:19,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:18:19,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:17:58" (1/3) ... [2022-11-19 07:18:19,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@979412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:18:19, skipping insertion in model container [2022-11-19 07:18:19,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (2/3) ... [2022-11-19 07:18:19,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@979412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:18:19, skipping insertion in model container [2022-11-19 07:18:19,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:18:19" (3/3) ... [2022-11-19 07:18:19,294 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.15.cil.c [2022-11-19 07:18:19,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:18:19,318 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:18:19,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:18:19,486 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;@7e75611d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:18:19,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:18:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-19 07:18:19,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:18:19,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:19,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:19,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash 643887346, now seen corresponding path program 1 times [2022-11-19 07:18:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:19,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351478217] [2022-11-19 07:18:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:19,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:18:20,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:20,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351478217] [2022-11-19 07:18:20,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351478217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:20,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:18:20,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:18:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048979644] [2022-11-19 07:18:20,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:20,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:18:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:18:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:18:20,268 INFO L87 Difference]: Start difference. First operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-19 07:18:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:21,803 INFO L93 Difference]: Finished difference Result 3877 states and 7503 transitions. [2022-11-19 07:18:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:18:21,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 71 [2022-11-19 07:18:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:21,842 INFO L225 Difference]: With dead ends: 3877 [2022-11-19 07:18:21,843 INFO L226 Difference]: Without dead ends: 2028 [2022-11-19 07:18:22,010 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 [2022-11-19 07:18:22,014 INFO L413 NwaCegarLoop]: 3549 mSDtfsCounter, 3820 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 6994 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:22,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3820 Valid, 6994 Invalid, 758 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:18:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-11-19 07:18:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2027. [2022-11-19 07:18:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1961 states have (on average 1.9163691993880674) internal successors, (3758), 1965 states have internal predecessors, (3758), 52 states have call successors, (52), 13 states have call predecessors, (52), 12 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-19 07:18:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3860 transitions. [2022-11-19 07:18:22,208 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3860 transitions. Word has length 71 [2022-11-19 07:18:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:22,210 INFO L495 AbstractCegarLoop]: Abstraction has 2027 states and 3860 transitions. [2022-11-19 07:18:22,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-19 07:18:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3860 transitions. [2022-11-19 07:18:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:18:22,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:22,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:22,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:18:22,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1927279853, now seen corresponding path program 1 times [2022-11-19 07:18:22,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:22,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320905709] [2022-11-19 07:18:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:22,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:18:22,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:22,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320905709] [2022-11-19 07:18:22,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320905709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:22,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402497087] [2022-11-19 07:18:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:22,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:22,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:22,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:22,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:18:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:23,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:18:23,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:18:23,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:18:23,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402497087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:23,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:18:23,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 07:18:23,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941398258] [2022-11-19 07:18:23,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:23,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:23,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:23,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:23,275 INFO L87 Difference]: Start difference. First operand 2027 states and 3860 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2022-11-19 07:18:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:23,945 INFO L93 Difference]: Finished difference Result 2782 states and 5049 transitions. [2022-11-19 07:18:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:23,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 144 [2022-11-19 07:18:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:23,961 INFO L225 Difference]: With dead ends: 2782 [2022-11-19 07:18:23,962 INFO L226 Difference]: Without dead ends: 2401 [2022-11-19 07:18:23,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:23,967 INFO L413 NwaCegarLoop]: 3376 mSDtfsCounter, 3533 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:23,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3624 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:18:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-11-19 07:18:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2395. [2022-11-19 07:18:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2273 states have (on average 1.86229652441707) internal successors, (4233), 2278 states have internal predecessors, (4233), 96 states have call successors, (96), 25 states have call predecessors, (96), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-19 07:18:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 4423 transitions. [2022-11-19 07:18:24,088 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 4423 transitions. Word has length 144 [2022-11-19 07:18:24,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:24,092 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 4423 transitions. [2022-11-19 07:18:24,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2022-11-19 07:18:24,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 4423 transitions. [2022-11-19 07:18:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:18:24,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:24,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:24,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:24,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:24,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1381005137, now seen corresponding path program 1 times [2022-11-19 07:18:24,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:24,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985233532] [2022-11-19 07:18:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:18:24,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:24,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985233532] [2022-11-19 07:18:24,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985233532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:24,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625700455] [2022-11-19 07:18:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:24,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:24,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:24,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:24,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:18:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:24,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:18:25,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:18:25,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:18:25,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625700455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:25,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:18:25,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 07:18:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679765956] [2022-11-19 07:18:25,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:25,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:25,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:25,131 INFO L87 Difference]: Start difference. First operand 2395 states and 4423 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2022-11-19 07:18:25,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:25,782 INFO L93 Difference]: Finished difference Result 3880 states and 6758 transitions. [2022-11-19 07:18:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:25,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 144 [2022-11-19 07:18:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:25,802 INFO L225 Difference]: With dead ends: 3880 [2022-11-19 07:18:25,803 INFO L226 Difference]: Without dead ends: 3131 [2022-11-19 07:18:25,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:25,811 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3527 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:25,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:18:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-11-19 07:18:25,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3123. [2022-11-19 07:18:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 2891 states have (on average 1.7886544448287789) internal successors, (5171), 2898 states have internal predecessors, (5171), 182 states have call successors, (182), 49 states have call predecessors, (182), 48 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-19 07:18:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5533 transitions. [2022-11-19 07:18:25,960 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5533 transitions. Word has length 144 [2022-11-19 07:18:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:25,961 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5533 transitions. [2022-11-19 07:18:25,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2022-11-19 07:18:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5533 transitions. [2022-11-19 07:18:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:18:25,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:25,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:25,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:26,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:26,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash 777939471, now seen corresponding path program 1 times [2022-11-19 07:18:26,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:26,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351953627] [2022-11-19 07:18:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:26,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:18:26,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:26,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351953627] [2022-11-19 07:18:26,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351953627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:26,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504599448] [2022-11-19 07:18:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:26,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:26,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:26,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:26,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:18:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:26,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:18:26,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-19 07:18:26,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:18:26,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504599448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:26,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:18:26,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 07:18:26,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444920991] [2022-11-19 07:18:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:26,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:26,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:26,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:26,828 INFO L87 Difference]: Start difference. First operand 3123 states and 5533 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2022-11-19 07:18:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:27,752 INFO L93 Difference]: Finished difference Result 6052 states and 10126 transitions. [2022-11-19 07:18:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:27,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 144 [2022-11-19 07:18:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:27,778 INFO L225 Difference]: With dead ends: 6052 [2022-11-19 07:18:27,778 INFO L226 Difference]: Without dead ends: 4575 [2022-11-19 07:18:27,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:27,787 INFO L413 NwaCegarLoop]: 3374 mSDtfsCounter, 3551 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:27,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 3622 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:18:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2022-11-19 07:18:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4563. [2022-11-19 07:18:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4115 states have (on average 1.7066828675577157) internal successors, (7023), 4126 states have internal predecessors, (7023), 350 states have call successors, (350), 97 states have call predecessors, (350), 96 states have return successors, (348), 340 states have call predecessors, (348), 348 states have call successors, (348) [2022-11-19 07:18:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7721 transitions. [2022-11-19 07:18:28,026 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7721 transitions. Word has length 144 [2022-11-19 07:18:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:28,027 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 7721 transitions. [2022-11-19 07:18:28,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2022-11-19 07:18:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7721 transitions. [2022-11-19 07:18:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:18:28,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:28,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:28,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:28,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:28,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1206943027, now seen corresponding path program 1 times [2022-11-19 07:18:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541823296] [2022-11-19 07:18:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:18:28,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:28,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541823296] [2022-11-19 07:18:28,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541823296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:28,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004159778] [2022-11-19 07:18:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:28,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:28,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:28,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:28,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:18:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:28,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:18:28,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 07:18:28,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:18:28,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004159778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:28,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:18:28,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 07:18:28,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519880009] [2022-11-19 07:18:28,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:28,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:28,899 INFO L87 Difference]: Start difference. First operand 4563 states and 7721 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2022-11-19 07:18:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:29,754 INFO L93 Difference]: Finished difference Result 10348 states and 16762 transitions. [2022-11-19 07:18:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 144 [2022-11-19 07:18:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:29,799 INFO L225 Difference]: With dead ends: 10348 [2022-11-19 07:18:29,799 INFO L226 Difference]: Without dead ends: 7431 [2022-11-19 07:18:29,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:29,818 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3545 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:29,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:18:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2022-11-19 07:18:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7411. [2022-11-19 07:18:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 6539 states have (on average 1.6331243309374521) internal successors, (10679), 6558 states have internal predecessors, (10679), 678 states have call successors, (678), 193 states have call predecessors, (678), 192 states have return successors, (676), 660 states have call predecessors, (676), 676 states have call successors, (676) [2022-11-19 07:18:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 12033 transitions. [2022-11-19 07:18:30,221 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 12033 transitions. Word has length 144 [2022-11-19 07:18:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:30,221 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 12033 transitions. [2022-11-19 07:18:30,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2022-11-19 07:18:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 12033 transitions. [2022-11-19 07:18:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:18:30,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:30,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:30,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 07:18:30,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:30,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:30,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:30,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1069122059, now seen corresponding path program 1 times [2022-11-19 07:18:30,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:30,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762253017] [2022-11-19 07:18:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:30,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:18:30,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:30,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762253017] [2022-11-19 07:18:30,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762253017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927424350] [2022-11-19 07:18:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:30,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:30,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:30,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:18:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:30,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:18:30,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-19 07:18:31,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:18:31,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927424350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:31,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:18:31,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 07:18:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537370970] [2022-11-19 07:18:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:31,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:31,038 INFO L87 Difference]: Start difference. First operand 7411 states and 12033 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-11-19 07:18:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:32,578 INFO L93 Difference]: Finished difference Result 18844 states and 29834 transitions. [2022-11-19 07:18:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:32,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 144 [2022-11-19 07:18:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:32,687 INFO L225 Difference]: With dead ends: 18844 [2022-11-19 07:18:32,687 INFO L226 Difference]: Without dead ends: 13079 [2022-11-19 07:18:32,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:32,725 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3554 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:32,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3554 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:18:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13079 states. [2022-11-19 07:18:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13079 to 13043. [2022-11-19 07:18:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13043 states, 11339 states have (on average 1.578181497486551) internal successors, (17895), 11374 states have internal predecessors, (17895), 1318 states have call successors, (1318), 385 states have call predecessors, (1318), 384 states have return successors, (1316), 1284 states have call predecessors, (1316), 1316 states have call successors, (1316) [2022-11-19 07:18:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13043 states to 13043 states and 20529 transitions. [2022-11-19 07:18:33,654 INFO L78 Accepts]: Start accepts. Automaton has 13043 states and 20529 transitions. Word has length 144 [2022-11-19 07:18:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:33,655 INFO L495 AbstractCegarLoop]: Abstraction has 13043 states and 20529 transitions. [2022-11-19 07:18:33,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-11-19 07:18:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 13043 states and 20529 transitions. [2022-11-19 07:18:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:18:33,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:33,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:33,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:33,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1750611827, now seen corresponding path program 1 times [2022-11-19 07:18:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:33,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651782122] [2022-11-19 07:18:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:18:34,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:34,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651782122] [2022-11-19 07:18:34,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651782122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:34,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724107424] [2022-11-19 07:18:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:34,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:34,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:34,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:18:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:34,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:18:34,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:18:34,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:18:34,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724107424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:34,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:18:34,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 07:18:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247417939] [2022-11-19 07:18:34,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:34,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:34,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:34,768 INFO L87 Difference]: Start difference. First operand 13043 states and 20529 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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) [2022-11-19 07:18:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:36,413 INFO L93 Difference]: Finished difference Result 35644 states and 55578 transitions. [2022-11-19 07:18:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:36,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 144 [2022-11-19 07:18:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:36,532 INFO L225 Difference]: With dead ends: 35644 [2022-11-19 07:18:36,532 INFO L226 Difference]: Without dead ends: 24247 [2022-11-19 07:18:36,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:36,583 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3524 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:36,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:18:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24247 states. [2022-11-19 07:18:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24247 to 24179. [2022-11-19 07:18:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24179 states, 20843 states have (on average 1.5417646212157559) internal successors, (32135), 20910 states have internal predecessors, (32135), 2566 states have call successors, (2566), 769 states have call predecessors, (2566), 768 states have return successors, (2564), 2500 states have call predecessors, (2564), 2564 states have call successors, (2564) [2022-11-19 07:18:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24179 states to 24179 states and 37265 transitions. [2022-11-19 07:18:38,358 INFO L78 Accepts]: Start accepts. Automaton has 24179 states and 37265 transitions. Word has length 144 [2022-11-19 07:18:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:38,360 INFO L495 AbstractCegarLoop]: Abstraction has 24179 states and 37265 transitions. [2022-11-19 07:18:38,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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) [2022-11-19 07:18:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 24179 states and 37265 transitions. [2022-11-19 07:18:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:18:38,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:38,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:38,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:38,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:38,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:38,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1808203407, now seen corresponding path program 1 times [2022-11-19 07:18:38,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:38,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187287726] [2022-11-19 07:18:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:18:38,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:38,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187287726] [2022-11-19 07:18:38,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187287726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:38,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700213797] [2022-11-19 07:18:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:38,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:38,910 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:38,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:18:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:39,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:18:39,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 07:18:39,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:18:39,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700213797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:39,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:18:39,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 07:18:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049623183] [2022-11-19 07:18:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:39,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:39,330 INFO L87 Difference]: Start difference. First operand 24179 states and 37265 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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) [2022-11-19 07:18:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:42,337 INFO L93 Difference]: Finished difference Result 68860 states and 106266 transitions. [2022-11-19 07:18:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:42,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 144 [2022-11-19 07:18:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:42,564 INFO L225 Difference]: With dead ends: 68860 [2022-11-19 07:18:42,564 INFO L226 Difference]: Without dead ends: 46327 [2022-11-19 07:18:42,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:42,654 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3539 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:42,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:18:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46327 states. [2022-11-19 07:18:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46327 to 46195. [2022-11-19 07:18:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46195 states, 39659 states have (on average 1.5187221059532514) internal successors, (60231), 39790 states have internal predecessors, (60231), 4998 states have call successors, (4998), 1537 states have call predecessors, (4998), 1536 states have return successors, (4996), 4868 states have call predecessors, (4996), 4996 states have call successors, (4996) [2022-11-19 07:18:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46195 states to 46195 states and 70225 transitions. [2022-11-19 07:18:45,744 INFO L78 Accepts]: Start accepts. Automaton has 46195 states and 70225 transitions. Word has length 144 [2022-11-19 07:18:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:45,745 INFO L495 AbstractCegarLoop]: Abstraction has 46195 states and 70225 transitions. [2022-11-19 07:18:45,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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) [2022-11-19 07:18:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 46195 states and 70225 transitions. [2022-11-19 07:18:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:18:46,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:46,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:46,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-19 07:18:46,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:46,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2109260877, now seen corresponding path program 1 times [2022-11-19 07:18:46,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:46,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445276400] [2022-11-19 07:18:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 07:18:47,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:47,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445276400] [2022-11-19 07:18:47,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445276400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:47,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:18:47,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:18:47,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334538145] [2022-11-19 07:18:47,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:47,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:18:47,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:47,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:18:47,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:47,178 INFO L87 Difference]: Start difference. First operand 46195 states and 70225 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-19 07:18:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:54,477 INFO L93 Difference]: Finished difference Result 158075 states and 238040 transitions. [2022-11-19 07:18:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:18:54,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 144 [2022-11-19 07:18:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:55,223 INFO L225 Difference]: With dead ends: 158075 [2022-11-19 07:18:55,223 INFO L226 Difference]: Without dead ends: 113527 [2022-11-19 07:18:55,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:18:55,391 INFO L413 NwaCegarLoop]: 3342 mSDtfsCounter, 4430 mSDsluCounter, 9823 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 13165 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:55,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4452 Valid, 13165 Invalid, 1409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [151 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 07:18:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113527 states. [2022-11-19 07:19:00,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113527 to 89203. [2022-11-19 07:19:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89203 states, 76395 states have (on average 1.5038549643301262) internal successors, (114887), 76654 states have internal predecessors, (114887), 9734 states have call successors, (9734), 3073 states have call predecessors, (9734), 3072 states have return successors, (9732), 9476 states have call predecessors, (9732), 9732 states have call successors, (9732) [2022-11-19 07:19:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89203 states to 89203 states and 134353 transitions. [2022-11-19 07:19:01,445 INFO L78 Accepts]: Start accepts. Automaton has 89203 states and 134353 transitions. Word has length 144 [2022-11-19 07:19:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:19:01,447 INFO L495 AbstractCegarLoop]: Abstraction has 89203 states and 134353 transitions. [2022-11-19 07:19:01,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-19 07:19:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 89203 states and 134353 transitions. [2022-11-19 07:19:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-19 07:19:01,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:19:01,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:19:01,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:19:01,700 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:19:01,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:19:01,701 INFO L85 PathProgramCache]: Analyzing trace with hash 923190678, now seen corresponding path program 1 times [2022-11-19 07:19:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:19:01,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75581474] [2022-11-19 07:19:01,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:19:01,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:19:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:19:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:19:02,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:19:02,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75581474] [2022-11-19 07:19:02,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75581474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:19:02,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214220004] [2022-11-19 07:19:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:19:02,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:19:02,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:19:02,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:19:02,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e02194-31c2-45c7-be45-c2bd3bc53e88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:19:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:19:02,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:19:02,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:19:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-19 07:19:02,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:19:02,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214220004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:19:02,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:19:02,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-19 07:19:02,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746372294] [2022-11-19 07:19:02,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:19:02,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:19:02,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:19:02,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:19:02,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:19:02,666 INFO L87 Difference]: Start difference. First operand 89203 states and 134353 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:19:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:19:09,156 INFO L93 Difference]: Finished difference Result 157175 states and 240212 transitions. [2022-11-19 07:19:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:19:09,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 167 [2022-11-19 07:19:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:19:09,667 INFO L225 Difference]: With dead ends: 157175 [2022-11-19 07:19:09,667 INFO L226 Difference]: Without dead ends: 112371 [2022-11-19 07:19:09,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:19:09,812 INFO L413 NwaCegarLoop]: 3452 mSDtfsCounter, 134 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:19:09,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 6778 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:19:09,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112371 states.