./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.08.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/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_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.08.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/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_11edb8c9-b411-4344-9df8-04305a38668a/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 d0fbb3eaba725aed5c3b8bf09c66f0f1daed4feeee0b9a3792dc033de334e501 --- 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 04:06:30,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:06:30,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:06:30,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:06:30,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:06:30,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:06:30,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:06:30,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:06:30,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:06:30,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:06:31,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:06:31,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:06:31,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:06:31,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:06:31,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:06:31,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:06:31,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:06:31,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:06:31,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:06:31,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:06:31,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:06:31,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:06:31,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:06:31,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:06:31,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:06:31,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:06:31,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:06:31,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:06:31,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:06:31,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:06:31,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:06:31,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:06:31,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:06:31,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:06:31,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:06:31,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:06:31,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:06:31,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:06:31,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:06:31,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:06:31,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:06:31,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:06:31,100 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:06:31,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:06:31,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:06:31,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:06:31,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:06:31,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:06:31,102 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:06:31,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:06:31,103 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:06:31,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:06:31,104 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:06:31,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:06:31,105 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:06:31,105 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:06:31,105 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:06:31,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:06:31,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:06:31,106 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:06:31,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:06:31,107 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:06:31,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:06:31,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:06:31,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:06:31,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:06:31,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:06:31,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:06:31,108 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:06:31,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:06:31,108 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:06:31,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:06:31,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:06:31,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:06:31,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:31,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:06:31,110 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:06:31,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:06:31,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:06:31,110 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:06:31,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:06:31,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:06:31,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:06:31,111 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_11edb8c9-b411-4344-9df8-04305a38668a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0fbb3eaba725aed5c3b8bf09c66f0f1daed4feeee0b9a3792dc033de334e501 [2022-11-03 04:06:31,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:06:31,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:06:31,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:06:31,461 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:06:31,462 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:06:31,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/systemc/transmitter.08.cil.c [2022-11-03 04:06:31,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/data/bc10404af/a6790ecff4ef4d6293f1ebb484f9e8ea/FLAG061f3fe10 [2022-11-03 04:06:32,122 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:06:32,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/sv-benchmarks/c/systemc/transmitter.08.cil.c [2022-11-03 04:06:32,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/data/bc10404af/a6790ecff4ef4d6293f1ebb484f9e8ea/FLAG061f3fe10 [2022-11-03 04:06:32,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/data/bc10404af/a6790ecff4ef4d6293f1ebb484f9e8ea [2022-11-03 04:06:32,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:06:32,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:06:32,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:32,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:06:32,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:06:32,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690d8e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32, skipping insertion in model container [2022-11-03 04:06:32,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:06:32,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:06:32,693 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_11edb8c9-b411-4344-9df8-04305a38668a/sv-benchmarks/c/systemc/transmitter.08.cil.c[706,719] [2022-11-03 04:06:32,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:32,802 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:06:32,817 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_11edb8c9-b411-4344-9df8-04305a38668a/sv-benchmarks/c/systemc/transmitter.08.cil.c[706,719] [2022-11-03 04:06:32,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:32,920 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:06:32,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32 WrapperNode [2022-11-03 04:06:32,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:32,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:32,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:06:32,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:06:32,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,980 INFO L138 Inliner]: procedures = 44, calls = 54, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 606 [2022-11-03 04:06:32,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:32,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:06:32,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:06:32,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:06:32,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:06:33,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:06:33,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:06:33,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:06:33,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:33,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:33,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:06:33,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11edb8c9-b411-4344-9df8-04305a38668a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:06:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:06:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 04:06:33,135 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 04:06:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 04:06:33,135 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 04:06:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 04:06:33,135 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 04:06:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 04:06:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 04:06:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 04:06:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 04:06:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:06:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 04:06:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 04:06:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:06:33,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:06:33,261 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:06:33,263 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:06:34,182 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:06:34,621 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:06:34,622 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-03 04:06:34,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:34 BoogieIcfgContainer [2022-11-03 04:06:34,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:06:34,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:06:34,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:06:34,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:06:34,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:32" (1/3) ... [2022-11-03 04:06:34,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0abb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:34, skipping insertion in model container [2022-11-03 04:06:34,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (2/3) ... [2022-11-03 04:06:34,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0abb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:34, skipping insertion in model container [2022-11-03 04:06:34,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:34" (3/3) ... [2022-11-03 04:06:34,636 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.08.cil.c [2022-11-03 04:06:34,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:06:34,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:06:34,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:06:34,747 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;@53a4088c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:06:34,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:06:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 115 states have internal predecessors, (175), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-03 04:06:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 04:06:34,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:34,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:34,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:34,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1115745721, now seen corresponding path program 1 times [2022-11-03 04:06:34,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:34,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282658943] [2022-11-03 04:06:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:34,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:35,272 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 04:06:35,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:35,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282658943] [2022-11-03 04:06:35,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282658943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:35,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:35,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:06:35,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227877905] [2022-11-03 04:06:35,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:35,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:06:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:06:35,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:06:35,314 INFO L87 Difference]: Start difference. First operand has 142 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 115 states have internal predecessors, (175), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 04:06:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:35,894 INFO L93 Difference]: Finished difference Result 413 states and 642 transitions. [2022-11-03 04:06:35,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:06:35,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 61 [2022-11-03 04:06:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:35,918 INFO L225 Difference]: With dead ends: 413 [2022-11-03 04:06:35,918 INFO L226 Difference]: Without dead ends: 272 [2022-11-03 04:06:35,928 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 04:06:35,934 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 375 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:35,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 578 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:06:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-03 04:06:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 268. [2022-11-03 04:06:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 217 states have (on average 1.4976958525345623) internal successors, (325), 219 states have internal predecessors, (325), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-03 04:06:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 401 transitions. [2022-11-03 04:06:36,057 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 401 transitions. Word has length 61 [2022-11-03 04:06:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:36,059 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 401 transitions. [2022-11-03 04:06:36,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 04:06:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 401 transitions. [2022-11-03 04:06:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 04:06:36,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:36,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:36,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:06:36,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash -985095494, now seen corresponding path program 1 times [2022-11-03 04:06:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:36,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88712672] [2022-11-03 04:06:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:36,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:36,323 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 04:06:36,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:36,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88712672] [2022-11-03 04:06:36,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88712672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:36,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:36,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:06:36,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232520080] [2022-11-03 04:06:36,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:36,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:36,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:36,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:36,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:36,329 INFO L87 Difference]: Start difference. First operand 268 states and 401 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:06:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:37,315 INFO L93 Difference]: Finished difference Result 1549 states and 2443 transitions. [2022-11-03 04:06:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:06:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2022-11-03 04:06:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:37,328 INFO L225 Difference]: With dead ends: 1549 [2022-11-03 04:06:37,328 INFO L226 Difference]: Without dead ends: 1286 [2022-11-03 04:06:37,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:06:37,332 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 941 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:37,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 809 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:06:37,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-11-03 04:06:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1250. [2022-11-03 04:06:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1027 states have (on average 1.49269717624148) internal successors, (1533), 1035 states have internal predecessors, (1533), 162 states have call successors, (162), 60 states have call predecessors, (162), 60 states have return successors, (244), 155 states have call predecessors, (244), 162 states have call successors, (244) [2022-11-03 04:06:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1939 transitions. [2022-11-03 04:06:37,471 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1939 transitions. Word has length 61 [2022-11-03 04:06:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:37,471 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1939 transitions. [2022-11-03 04:06:37,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:06:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1939 transitions. [2022-11-03 04:06:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 04:06:37,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:37,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:37,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:06:37,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1858573189, now seen corresponding path program 1 times [2022-11-03 04:06:37,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:37,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955372906] [2022-11-03 04:06:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:37,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:37,646 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 04:06:37,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:37,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955372906] [2022-11-03 04:06:37,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955372906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:37,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:37,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:06:37,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562454020] [2022-11-03 04:06:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:37,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:37,650 INFO L87 Difference]: Start difference. First operand 1250 states and 1939 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:06:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:38,545 INFO L93 Difference]: Finished difference Result 4923 states and 7865 transitions. [2022-11-03 04:06:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:06:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2022-11-03 04:06:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:38,578 INFO L225 Difference]: With dead ends: 4923 [2022-11-03 04:06:38,578 INFO L226 Difference]: Without dead ends: 3678 [2022-11-03 04:06:38,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:06:38,592 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 943 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:38,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 816 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:06:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3678 states. [2022-11-03 04:06:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3678 to 3416. [2022-11-03 04:06:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3416 states, 2875 states have (on average 1.5057391304347827) internal successors, (4329), 2849 states have internal predecessors, (4329), 376 states have call successors, (376), 148 states have call predecessors, (376), 164 states have return successors, (726), 419 states have call predecessors, (726), 376 states have call successors, (726) [2022-11-03 04:06:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 5431 transitions. [2022-11-03 04:06:38,910 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 5431 transitions. Word has length 61 [2022-11-03 04:06:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:38,910 INFO L495 AbstractCegarLoop]: Abstraction has 3416 states and 5431 transitions. [2022-11-03 04:06:38,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:06:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 5431 transitions. [2022-11-03 04:06:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 04:06:38,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:38,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:38,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:06:38,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash 280879706, now seen corresponding path program 1 times [2022-11-03 04:06:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:38,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350733626] [2022-11-03 04:06:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:38,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:39,104 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 04:06:39,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:39,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350733626] [2022-11-03 04:06:39,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350733626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:39,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:39,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:06:39,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070997166] [2022-11-03 04:06:39,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:39,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:39,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:39,108 INFO L87 Difference]: Start difference. First operand 3416 states and 5431 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:06:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:40,390 INFO L93 Difference]: Finished difference Result 12583 states and 20719 transitions. [2022-11-03 04:06:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:06:40,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2022-11-03 04:06:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:40,451 INFO L225 Difference]: With dead ends: 12583 [2022-11-03 04:06:40,452 INFO L226 Difference]: Without dead ends: 9172 [2022-11-03 04:06:40,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:06:40,470 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 912 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:40,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 850 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:06:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9172 states. [2022-11-03 04:06:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9172 to 8584. [2022-11-03 04:06:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8584 states, 7317 states have (on average 1.5176985103184366) internal successors, (11105), 7181 states have internal predecessors, (11105), 846 states have call successors, (846), 348 states have call predecessors, (846), 420 states have return successors, (2042), 1055 states have call predecessors, (2042), 846 states have call successors, (2042) [2022-11-03 04:06:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 13993 transitions. [2022-11-03 04:06:41,189 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 13993 transitions. Word has length 61 [2022-11-03 04:06:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:41,190 INFO L495 AbstractCegarLoop]: Abstraction has 8584 states and 13993 transitions. [2022-11-03 04:06:41,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:06:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 13993 transitions. [2022-11-03 04:06:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 04:06:41,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:41,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:41,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:06:41,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:41,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1483936903, now seen corresponding path program 1 times [2022-11-03 04:06:41,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:41,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562678076] [2022-11-03 04:06:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:41,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:41,321 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 04:06:41,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:41,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562678076] [2022-11-03 04:06:41,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562678076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:41,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:41,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:06:41,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916963160] [2022-11-03 04:06:41,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:41,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:41,325 INFO L87 Difference]: Start difference. First operand 8584 states and 13993 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:06:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:43,246 INFO L93 Difference]: Finished difference Result 30951 states and 52709 transitions. [2022-11-03 04:06:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:06:43,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2022-11-03 04:06:43,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:43,437 INFO L225 Difference]: With dead ends: 30951 [2022-11-03 04:06:43,437 INFO L226 Difference]: Without dead ends: 22372 [2022-11-03 04:06:43,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:06:43,497 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 889 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:43,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 877 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:06:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22372 states. [2022-11-03 04:06:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22372 to 21128. [2022-11-03 04:06:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21128 states, 18135 states have (on average 1.5316790736145576) internal successors, (27777), 17669 states have internal predecessors, (27777), 1916 states have call successors, (1916), 820 states have call predecessors, (1916), 1076 states have return successors, (5710), 2639 states have call predecessors, (5710), 1916 states have call successors, (5710) [2022-11-03 04:06:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21128 states to 21128 states and 35403 transitions. [2022-11-03 04:06:45,395 INFO L78 Accepts]: Start accepts. Automaton has 21128 states and 35403 transitions. Word has length 61 [2022-11-03 04:06:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:45,396 INFO L495 AbstractCegarLoop]: Abstraction has 21128 states and 35403 transitions. [2022-11-03 04:06:45,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:06:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 21128 states and 35403 transitions. [2022-11-03 04:06:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 04:06:45,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:45,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:45,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:06:45,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1541081128, now seen corresponding path program 1 times [2022-11-03 04:06:45,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:45,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467632454] [2022-11-03 04:06:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:45,686 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 04:06:45,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:45,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467632454] [2022-11-03 04:06:45,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467632454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:45,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:45,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:06:45,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499652858] [2022-11-03 04:06:45,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:45,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:06:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:45,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:06:45,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:06:45,689 INFO L87 Difference]: Start difference. First operand 21128 states and 35403 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 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 04:06:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:48,339 INFO L93 Difference]: Finished difference Result 60276 states and 101252 transitions. [2022-11-03 04:06:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:06:48,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 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 61 [2022-11-03 04:06:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:48,579 INFO L225 Difference]: With dead ends: 60276 [2022-11-03 04:06:48,579 INFO L226 Difference]: Without dead ends: 39154 [2022-11-03 04:06:48,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:06:48,657 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 772 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:48,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 512 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:06:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39154 states. [2022-11-03 04:06:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39154 to 34038. [2022-11-03 04:06:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34038 states, 29329 states have (on average 1.5137236182617886) internal successors, (44396), 28702 states have internal predecessors, (44396), 2872 states have call successors, (2872), 1324 states have call predecessors, (2872), 1836 states have return successors, (8563), 4012 states have call predecessors, (8563), 2872 states have call successors, (8563) [2022-11-03 04:06:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34038 states to 34038 states and 55831 transitions. [2022-11-03 04:06:51,932 INFO L78 Accepts]: Start accepts. Automaton has 34038 states and 55831 transitions. Word has length 61 [2022-11-03 04:06:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:51,932 INFO L495 AbstractCegarLoop]: Abstraction has 34038 states and 55831 transitions. [2022-11-03 04:06:51,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 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 04:06:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 34038 states and 55831 transitions. [2022-11-03 04:06:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:06:51,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:51,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:51,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:06:51,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash 479655206, now seen corresponding path program 1 times [2022-11-03 04:06:51,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:51,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820425803] [2022-11-03 04:06:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:51,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:52,244 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 04:06:52,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:52,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820425803] [2022-11-03 04:06:52,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820425803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:52,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:52,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:06:52,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786693150] [2022-11-03 04:06:52,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:52,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:06:52,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:06:52,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:06:52,248 INFO L87 Difference]: Start difference. First operand 34038 states and 55831 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (5), 2 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 04:06:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:56,496 INFO L93 Difference]: Finished difference Result 107960 states and 176708 transitions. [2022-11-03 04:06:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:06:56,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (5), 2 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 62 [2022-11-03 04:06:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:57,182 INFO L225 Difference]: With dead ends: 107960 [2022-11-03 04:06:57,182 INFO L226 Difference]: Without dead ends: 73928 [2022-11-03 04:06:57,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:06:57,289 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 696 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:57,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 525 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:06:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73928 states. [2022-11-03 04:07:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73928 to 62078. [2022-11-03 04:07:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62078 states, 53625 states have (on average 1.5112913752913752) internal successors, (81043), 52318 states have internal predecessors, (81043), 5068 states have call successors, (5068), 2348 states have call predecessors, (5068), 3384 states have return successors, (16046), 7412 states have call predecessors, (16046), 5068 states have call successors, (16046) [2022-11-03 04:07:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62078 states to 62078 states and 102157 transitions. [2022-11-03 04:07:02,608 INFO L78 Accepts]: Start accepts. Automaton has 62078 states and 102157 transitions. Word has length 62 [2022-11-03 04:07:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:02,609 INFO L495 AbstractCegarLoop]: Abstraction has 62078 states and 102157 transitions. [2022-11-03 04:07:02,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (5), 2 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 04:07:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 62078 states and 102157 transitions. [2022-11-03 04:07:02,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 04:07:02,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:02,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:02,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:07:02,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:02,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:02,613 INFO L85 PathProgramCache]: Analyzing trace with hash 538184111, now seen corresponding path program 1 times [2022-11-03 04:07:02,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:02,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126972655] [2022-11-03 04:07:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:02,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:02,926 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 04:07:02,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:02,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126972655] [2022-11-03 04:07:02,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126972655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:02,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:02,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22378784] [2022-11-03 04:07:02,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:02,931 INFO L87 Difference]: Start difference. First operand 62078 states and 102157 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (5), 2 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 04:07:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:10,432 INFO L93 Difference]: Finished difference Result 175423 states and 294597 transitions. [2022-11-03 04:07:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:07:10,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (5), 2 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 63 [2022-11-03 04:07:10,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:11,172 INFO L225 Difference]: With dead ends: 175423 [2022-11-03 04:07:11,173 INFO L226 Difference]: Without dead ends: 113351 [2022-11-03 04:07:11,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:07:11,579 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 641 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:11,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 555 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:07:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113351 states.