./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c44d114d56c1766d1cbfa8e225f5145dcce7e8e615df451e987409645be250c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:37:58,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:37:58,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:37:58,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:37:58,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:37:59,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:37:59,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:37:59,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:37:59,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:37:59,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:37:59,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:37:59,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:37:59,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:37:59,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:37:59,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:37:59,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:37:59,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:37:59,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:37:59,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:37:59,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:37:59,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:37:59,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:37:59,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:37:59,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:37:59,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:37:59,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:37:59,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:37:59,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:37:59,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:37:59,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:37:59,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:37:59,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:37:59,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:37:59,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:37:59,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:37:59,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:37:59,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:37:59,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:37:59,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:37:59,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:37:59,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:37:59,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:37:59,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:37:59,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:37:59,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:37:59,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:37:59,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:37:59,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:37:59,111 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:37:59,112 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:37:59,112 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:37:59,112 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:37:59,113 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:37:59,113 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:37:59,114 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:37:59,114 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:37:59,114 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:37:59,114 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:37:59,114 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:37:59,115 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:37:59,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:37:59,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:37:59,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:37:59,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:37:59,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:37:59,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:37:59,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:37:59,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:37:59,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:37:59,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:37:59,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:37:59,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:37:59,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:37:59,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:37:59,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:59,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:37:59,119 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:37:59,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:37:59,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:37:59,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:37:59,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:37:59,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:37:59,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:37:59,120 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_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c44d114d56c1766d1cbfa8e225f5145dcce7e8e615df451e987409645be250c [2022-11-03 02:37:59,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:37:59,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:37:59,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:37:59,461 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:37:59,462 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:37:59,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c [2022-11-03 02:37:59,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/data/7a7ca6315/edad6fd03af14315b591c89f8628d9a1/FLAG0cde4d83c [2022-11-03 02:38:00,696 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:38:00,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c [2022-11-03 02:38:00,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/data/7a7ca6315/edad6fd03af14315b591c89f8628d9a1/FLAG0cde4d83c [2022-11-03 02:38:00,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/data/7a7ca6315/edad6fd03af14315b591c89f8628d9a1 [2022-11-03 02:38:00,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:38:00,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:38:00,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:38:00,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:38:00,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:38:00,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:38:00" (1/1) ... [2022-11-03 02:38:00,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49545514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:00, skipping insertion in model container [2022-11-03 02:38:00,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:38:00" (1/1) ... [2022-11-03 02:38:00,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:38:01,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:38:03,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[380593,380606] [2022-11-03 02:38:03,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[383339,383352] [2022-11-03 02:38:04,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:38:04,025 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:38:05,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[380593,380606] [2022-11-03 02:38:05,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[383339,383352] [2022-11-03 02:38:05,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:38:05,508 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:38:05,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05 WrapperNode [2022-11-03 02:38:05,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:38:05,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:38:05,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:38:05,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:38:05,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:05,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,292 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-11-03 02:38:06,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:38:06,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:38:06,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:38:06,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:38:06,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:38:06,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:38:06,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:38:06,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:38:06,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (1/1) ... [2022-11-03 02:38:06,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:38:06,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:06,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:38:07,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:38:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:38:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 02:38:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 02:38:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 02:38:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 02:38:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 02:38:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 02:38:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 02:38:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 02:38:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 02:38:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 02:38:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 02:38:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 02:38:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:38:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:38:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:38:07,344 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:38:07,346 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:38:16,447 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:38:19,780 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:38:19,780 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-03 02:38:19,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:38:19 BoogieIcfgContainer [2022-11-03 02:38:19,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:38:19,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:38:19,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:38:19,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:38:19,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:38:00" (1/3) ... [2022-11-03 02:38:19,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9f8493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:38:19, skipping insertion in model container [2022-11-03 02:38:19,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:05" (2/3) ... [2022-11-03 02:38:19,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9f8493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:38:19, skipping insertion in model container [2022-11-03 02:38:19,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:38:19" (3/3) ... [2022-11-03 02:38:19,796 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.09.cil-1.c [2022-11-03 02:38:19,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:38:19,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:38:19,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:38:19,909 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;@2750579, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:38:19,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:38:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 1798 states, 1766 states have (on average 1.962061155152888) internal successors, (3465), 1769 states have internal predecessors, (3465), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-03 02:38:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 02:38:19,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:19,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:19,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:19,942 INFO L85 PathProgramCache]: Analyzing trace with hash -253024636, now seen corresponding path program 1 times [2022-11-03 02:38:19,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:19,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705247057] [2022-11-03 02:38:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:19,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:20,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:20,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705247057] [2022-11-03 02:38:20,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705247057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:20,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:20,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:38:20,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933178461] [2022-11-03 02:38:20,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:20,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:38:20,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:38:20,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:38:20,479 INFO L87 Difference]: Start difference. First operand has 1798 states, 1766 states have (on average 1.962061155152888) internal successors, (3465), 1769 states have internal predecessors, (3465), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:38:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:21,539 INFO L93 Difference]: Finished difference Result 3734 states and 7259 transitions. [2022-11-03 02:38:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:38:21,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2022-11-03 02:38:21,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:21,567 INFO L225 Difference]: With dead ends: 3734 [2022-11-03 02:38:21,567 INFO L226 Difference]: Without dead ends: 1935 [2022-11-03 02:38:21,578 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 [2022-11-03 02:38:21,584 INFO L413 NwaCegarLoop]: 3421 mSDtfsCounter, 3680 mSDsluCounter, 3625 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 6756 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:21,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 6756 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:38:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2022-11-03 02:38:21,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1934. [2022-11-03 02:38:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1878 states have (on average 1.9297124600638977) internal successors, (3624), 1881 states have internal predecessors, (3624), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 02:38:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3708 transitions. [2022-11-03 02:38:21,719 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3708 transitions. Word has length 58 [2022-11-03 02:38:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:21,720 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 3708 transitions. [2022-11-03 02:38:21,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:38:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3708 transitions. [2022-11-03 02:38:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:38:21,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:21,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:21,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:38:21,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:21,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:21,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1309920116, now seen corresponding path program 1 times [2022-11-03 02:38:21,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:21,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103314951] [2022-11-03 02:38:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:21,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:38:22,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:22,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103314951] [2022-11-03 02:38:22,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103314951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:22,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404560136] [2022-11-03 02:38:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:22,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:22,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:22,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:22,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:38:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:22,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:38:22,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:38:22,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:22,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404560136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:22,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:38:22,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:38:22,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469585483] [2022-11-03 02:38:22,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:22,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:22,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:22,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:22,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:22,463 INFO L87 Difference]: Start difference. First operand 1934 states and 3708 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:23,004 INFO L93 Difference]: Finished difference Result 2503 states and 4585 transitions. [2022-11-03 02:38:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:23,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-03 02:38:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:23,017 INFO L225 Difference]: With dead ends: 2503 [2022-11-03 02:38:23,017 INFO L226 Difference]: Without dead ends: 2215 [2022-11-03 02:38:23,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:23,020 INFO L413 NwaCegarLoop]: 3292 mSDtfsCounter, 3471 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:23,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 3472 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:38:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-11-03 02:38:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2211. [2022-11-03 02:38:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2107 states have (on average 1.8818224964404366) internal successors, (3965), 2111 states have internal predecessors, (3965), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-03 02:38:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 4121 transitions. [2022-11-03 02:38:23,090 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 4121 transitions. Word has length 115 [2022-11-03 02:38:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:23,090 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 4121 transitions. [2022-11-03 02:38:23,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 4121 transitions. [2022-11-03 02:38:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:38:23,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:23,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:23,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:38:23,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 02:38:23,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:23,311 INFO L85 PathProgramCache]: Analyzing trace with hash -710598538, now seen corresponding path program 1 times [2022-11-03 02:38:23,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:23,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478083799] [2022-11-03 02:38:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:23,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:38:23,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:23,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478083799] [2022-11-03 02:38:23,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478083799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:23,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879323046] [2022-11-03 02:38:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:23,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:23,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:23,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:23,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:38:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:23,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:38:23,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:38:23,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:23,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879323046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:23,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:38:23,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:38:23,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988586144] [2022-11-03 02:38:23,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:23,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:23,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:23,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:23,808 INFO L87 Difference]: Start difference. First operand 2211 states and 4121 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:24,482 INFO L93 Difference]: Finished difference Result 3328 states and 5836 transitions. [2022-11-03 02:38:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:24,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-03 02:38:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:24,494 INFO L225 Difference]: With dead ends: 3328 [2022-11-03 02:38:24,495 INFO L226 Difference]: Without dead ends: 2763 [2022-11-03 02:38:24,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:24,498 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3465 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:24,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:38:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-11-03 02:38:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2757. [2022-11-03 02:38:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2559 states have (on average 1.8112543962485346) internal successors, (4635), 2565 states have internal predecessors, (4635), 148 states have call successors, (148), 48 states have call predecessors, (148), 48 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2022-11-03 02:38:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4931 transitions. [2022-11-03 02:38:24,589 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4931 transitions. Word has length 115 [2022-11-03 02:38:24,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:24,590 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 4931 transitions. [2022-11-03 02:38:24,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:24,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4931 transitions. [2022-11-03 02:38:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:38:24,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:24,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:24,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:24,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:24,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:24,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1712512760, now seen corresponding path program 1 times [2022-11-03 02:38:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:24,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784173959] [2022-11-03 02:38:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:24,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:38:24,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:24,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784173959] [2022-11-03 02:38:24,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784173959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:24,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790207018] [2022-11-03 02:38:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:24,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:24,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:25,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:38:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:25,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:38:25,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 02:38:25,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:25,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790207018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:25,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:38:25,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:38:25,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837075667] [2022-11-03 02:38:25,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:25,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:25,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:25,249 INFO L87 Difference]: Start difference. First operand 2757 states and 4931 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:25,835 INFO L93 Difference]: Finished difference Result 4954 states and 8288 transitions. [2022-11-03 02:38:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-03 02:38:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:25,853 INFO L225 Difference]: With dead ends: 4954 [2022-11-03 02:38:25,854 INFO L226 Difference]: Without dead ends: 3843 [2022-11-03 02:38:25,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:25,860 INFO L413 NwaCegarLoop]: 3290 mSDtfsCounter, 3474 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:25,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 3470 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:38:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2022-11-03 02:38:25,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3833. [2022-11-03 02:38:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3451 states have (on average 1.724427702115329) internal successors, (5951), 3461 states have internal predecessors, (5951), 284 states have call successors, (284), 96 states have call predecessors, (284), 96 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2022-11-03 02:38:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 6519 transitions. [2022-11-03 02:38:26,003 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 6519 transitions. Word has length 115 [2022-11-03 02:38:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:26,004 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 6519 transitions. [2022-11-03 02:38:26,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 6519 transitions. [2022-11-03 02:38:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:38:26,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:26,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:26,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:26,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:26,227 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1887022410, now seen corresponding path program 1 times [2022-11-03 02:38:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:26,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627569394] [2022-11-03 02:38:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:38:26,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627569394] [2022-11-03 02:38:26,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627569394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786826014] [2022-11-03 02:38:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:26,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:26,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:26,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:26,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:38:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:26,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:38:26,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:38:26,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:26,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786826014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:26,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:38:26,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:38:26,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405412909] [2022-11-03 02:38:26,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:26,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:26,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:26,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:26,657 INFO L87 Difference]: Start difference. First operand 3833 states and 6519 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:27,282 INFO L93 Difference]: Finished difference Result 8158 states and 13092 transitions. [2022-11-03 02:38:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:27,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-03 02:38:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:27,314 INFO L225 Difference]: With dead ends: 8158 [2022-11-03 02:38:27,314 INFO L226 Difference]: Without dead ends: 5971 [2022-11-03 02:38:27,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:27,325 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3459 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:27,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:38:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2022-11-03 02:38:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5953. [2022-11-03 02:38:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5953 states, 5211 states have (on average 1.637881404720783) internal successors, (8535), 5229 states have internal predecessors, (8535), 548 states have call successors, (548), 192 states have call predecessors, (548), 192 states have return successors, (548), 532 states have call predecessors, (548), 548 states have call successors, (548) [2022-11-03 02:38:27,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 9631 transitions. [2022-11-03 02:38:27,855 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 9631 transitions. Word has length 115 [2022-11-03 02:38:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:27,856 INFO L495 AbstractCegarLoop]: Abstraction has 5953 states and 9631 transitions. [2022-11-03 02:38:27,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 9631 transitions. [2022-11-03 02:38:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:38:27,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:27,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:27,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:28,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:28,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:28,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:28,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2059246264, now seen corresponding path program 1 times [2022-11-03 02:38:28,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:28,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097453178] [2022-11-03 02:38:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:28,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:38:28,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:28,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097453178] [2022-11-03 02:38:28,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097453178] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:28,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996137275] [2022-11-03 02:38:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:28,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:28,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:28,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:38:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:28,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:38:28,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:38:28,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:28,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996137275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:28,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:38:28,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:38:28,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196783272] [2022-11-03 02:38:28,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:28,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:28,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:28,536 INFO L87 Difference]: Start difference. First operand 5953 states and 9631 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:29,281 INFO L93 Difference]: Finished difference Result 14470 states and 22500 transitions. [2022-11-03 02:38:29,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:29,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-03 02:38:29,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:29,353 INFO L225 Difference]: With dead ends: 14470 [2022-11-03 02:38:29,353 INFO L226 Difference]: Without dead ends: 10163 [2022-11-03 02:38:29,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:38:29,370 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3453 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:29,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3453 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:38:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2022-11-03 02:38:29,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10129. [2022-11-03 02:38:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10129 states, 8683 states have (on average 1.5670851088333526) internal successors, (13607), 8717 states have internal predecessors, (13607), 1060 states have call successors, (1060), 384 states have call predecessors, (1060), 384 states have return successors, (1060), 1028 states have call predecessors, (1060), 1060 states have call successors, (1060) [2022-11-03 02:38:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10129 states to 10129 states and 15727 transitions. [2022-11-03 02:38:29,820 INFO L78 Accepts]: Start accepts. Automaton has 10129 states and 15727 transitions. Word has length 115 [2022-11-03 02:38:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:29,820 INFO L495 AbstractCegarLoop]: Abstraction has 10129 states and 15727 transitions. [2022-11-03 02:38:29,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:38:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 10129 states and 15727 transitions. [2022-11-03 02:38:29,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:38:29,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:29,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:29,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:30,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c05f2a0-ab26-4d3b-b4f3-7e4f688c7a04/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:30,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:30,052 INFO L85 PathProgramCache]: Analyzing trace with hash -754742214, now seen corresponding path program 1 times [2022-11-03 02:38:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:30,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774482568] [2022-11-03 02:38:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:30,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 02:38:30,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:30,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774482568] [2022-11-03 02:38:30,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774482568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:30,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:30,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:30,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292342476] [2022-11-03 02:38:30,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:30,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:30,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:30,196 INFO L87 Difference]: Start difference. First operand 10129 states and 15727 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:38:31,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:31,396 INFO L93 Difference]: Finished difference Result 16723 states and 25776 transitions. [2022-11-03 02:38:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:31,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-11-03 02:38:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:31,462 INFO L225 Difference]: With dead ends: 16723 [2022-11-03 02:38:31,462 INFO L226 Difference]: Without dead ends: 12401 [2022-11-03 02:38:31,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:31,483 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 100 mSDsluCounter, 3501 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6602 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:31,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 6602 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:38:31,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12401 states. [2022-11-03 02:38:32,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12401 to 11713. [2022-11-03 02:38:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11713 states, 10203 states have (on average 1.5908066255023032) internal successors, (16231), 10237 states have internal predecessors, (16231), 1092 states have call successors, (1092), 416 states have call predecessors, (1092), 416 states have return successors, (1092), 1060 states have call predecessors, (1092), 1092 states have call successors, (1092) [2022-11-03 02:38:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11713 states to 11713 states and 18415 transitions. [2022-11-03 02:38:32,233 INFO L78 Accepts]: Start accepts. Automaton has 11713 states and 18415 transitions. Word has length 115 [2022-11-03 02:38:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:32,234 INFO L495 AbstractCegarLoop]: Abstraction has 11713 states and 18415 transitions. [2022-11-03 02:38:32,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:38:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 11713 states and 18415 transitions. [2022-11-03 02:38:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 02:38:32,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:32,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:32,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:38:32,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:32,271 INFO L85 PathProgramCache]: Analyzing trace with hash 572424494, now seen corresponding path program 1 times [2022-11-03 02:38:32,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:32,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197803987] [2022-11-03 02:38:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:38:32,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:32,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197803987] [2022-11-03 02:38:32,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197803987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:32,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:32,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:32,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102655296] [2022-11-03 02:38:32,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:32,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:32,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:32,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:32,441 INFO L87 Difference]: Start difference. First operand 11713 states and 18415 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:38:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:33,982 INFO L93 Difference]: Finished difference Result 31558 states and 48788 transitions. [2022-11-03 02:38:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:33,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-03 02:38:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:34,091 INFO L225 Difference]: With dead ends: 31558 [2022-11-03 02:38:34,092 INFO L226 Difference]: Without dead ends: 21491 [2022-11-03 02:38:34,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:34,137 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3461 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:34,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3461 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:38:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21491 states. [2022-11-03 02:38:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21491 to 21393. [2022-11-03 02:38:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21393 states, 18443 states have (on average 1.5480670172965352) internal successors, (28551), 18509 states have internal predecessors, (28551), 2116 states have call successors, (2116), 832 states have call predecessors, (2116), 832 states have return successors, (2116), 2052 states have call predecessors, (2116), 2116 states have call successors, (2116) [2022-11-03 02:38:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21393 states to 21393 states and 32783 transitions. [2022-11-03 02:38:35,407 INFO L78 Accepts]: Start accepts. Automaton has 21393 states and 32783 transitions. Word has length 156 [2022-11-03 02:38:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:35,408 INFO L495 AbstractCegarLoop]: Abstraction has 21393 states and 32783 transitions. [2022-11-03 02:38:35,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:38:35,409 INFO L276 IsEmpty]: Start isEmpty. Operand 21393 states and 32783 transitions. [2022-11-03 02:38:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 02:38:35,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:35,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:35,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:38:35,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 698331019, now seen corresponding path program 1 times [2022-11-03 02:38:35,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:35,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559358407] [2022-11-03 02:38:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:38:35,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:35,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559358407] [2022-11-03 02:38:35,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559358407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:35,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:35,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:35,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331117755] [2022-11-03 02:38:35,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:35,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:35,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:35,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:35,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:35,593 INFO L87 Difference]: Start difference. First operand 21393 states and 32783 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:38:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:37,825 INFO L93 Difference]: Finished difference Result 60310 states and 91924 transitions. [2022-11-03 02:38:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-03 02:38:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:38,018 INFO L225 Difference]: With dead ends: 60310 [2022-11-03 02:38:38,019 INFO L226 Difference]: Without dead ends: 40563 [2022-11-03 02:38:38,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:38,081 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3463 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:38,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:38:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40563 states. [2022-11-03 02:38:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40563 to 40369. [2022-11-03 02:38:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40369 states, 34603 states have (on average 1.5186833511545241) internal successors, (52551), 34733 states have internal predecessors, (52551), 4100 states have call successors, (4100), 1664 states have call predecessors, (4100), 1664 states have return successors, (4100), 3972 states have call predecessors, (4100), 4100 states have call successors, (4100) [2022-11-03 02:38:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40369 states to 40369 states and 60751 transitions. [2022-11-03 02:38:40,412 INFO L78 Accepts]: Start accepts. Automaton has 40369 states and 60751 transitions. Word has length 156 [2022-11-03 02:38:40,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:40,413 INFO L495 AbstractCegarLoop]: Abstraction has 40369 states and 60751 transitions. [2022-11-03 02:38:40,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:38:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand 40369 states and 60751 transitions. [2022-11-03 02:38:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 02:38:40,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:40,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:38:40,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1753729462, now seen corresponding path program 1 times [2022-11-03 02:38:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527154960] [2022-11-03 02:38:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:38:40,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:40,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527154960] [2022-11-03 02:38:40,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527154960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:40,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:40,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886308036] [2022-11-03 02:38:40,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:40,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:40,681 INFO L87 Difference]: Start difference. First operand 40369 states and 60751 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:38:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:44,365 INFO L93 Difference]: Finished difference Result 116662 states and 175828 transitions. [2022-11-03 02:38:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-03 02:38:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:44,720 INFO L225 Difference]: With dead ends: 116662 [2022-11-03 02:38:44,720 INFO L226 Difference]: Without dead ends: 77939 [2022-11-03 02:38:44,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:44,821 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3465 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:44,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:38:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77939 states. [2022-11-03 02:38:48,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77939 to 77553. [2022-11-03 02:38:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77553 states, 66283 states have (on average 1.4976841724122325) internal successors, (99271), 66541 states have internal predecessors, (99271), 7940 states have call successors, (7940), 3328 states have call predecessors, (7940), 3328 states have return successors, (7940), 7684 states have call predecessors, (7940), 7940 states have call successors, (7940) [2022-11-03 02:38:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77553 states to 77553 states and 115151 transitions. [2022-11-03 02:38:48,740 INFO L78 Accepts]: Start accepts. Automaton has 77553 states and 115151 transitions. Word has length 156 [2022-11-03 02:38:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:48,740 INFO L495 AbstractCegarLoop]: Abstraction has 77553 states and 115151 transitions. [2022-11-03 02:38:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:38:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 77553 states and 115151 transitions. [2022-11-03 02:38:48,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 02:38:48,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:48,977 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:48,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:38:48,978 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:48,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:48,979 INFO L85 PathProgramCache]: Analyzing trace with hash 809433747, now seen corresponding path program 1 times [2022-11-03 02:38:48,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:48,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800163173] [2022-11-03 02:38:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:48,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:38:49,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:49,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800163173] [2022-11-03 02:38:49,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800163173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:49,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:49,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:49,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62763189] [2022-11-03 02:38:49,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:49,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:49,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:49,122 INFO L87 Difference]: Start difference. First operand 77553 states and 115151 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:38:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:55,538 INFO L93 Difference]: Finished difference Result 227062 states and 338900 transitions. [2022-11-03 02:38:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:55,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-03 02:38:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:56,208 INFO L225 Difference]: With dead ends: 227062 [2022-11-03 02:38:56,209 INFO L226 Difference]: Without dead ends: 151155 [2022-11-03 02:38:56,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:56,458 INFO L413 NwaCegarLoop]: 3272 mSDtfsCounter, 3468 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:56,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 3452 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:38:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151155 states.