./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba --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 45519c8273c53879cf6a170ed74d5bc0be814b1f3243ce6c30d1d3efe9a3cf32 --- 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-b5237d8 [2022-11-22 02:28:02,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:28:02,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:28:03,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:28:03,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:28:03,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:28:03,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:28:03,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:28:03,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:28:03,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:28:03,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:28:03,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:28:03,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:28:03,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:28:03,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:28:03,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:28:03,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:28:03,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:28:03,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:28:03,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:28:03,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:28:03,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:28:03,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:28:03,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:28:03,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:28:03,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:28:03,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:28:03,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:28:03,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:28:03,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:28:03,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:28:03,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:28:03,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:28:03,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:28:03,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:28:03,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:28:03,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:28:03,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:28:03,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:28:03,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:28:03,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:28:03,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:28:03,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:28:03,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:28:03,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:28:03,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:28:03,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:28:03,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:28:03,139 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:28:03,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:28:03,139 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:28:03,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:28:03,141 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:28:03,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:28:03,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:28:03,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:28:03,142 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:28:03,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:28:03,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:28:03,142 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:28:03,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:28:03,144 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:28:03,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:28:03,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:28:03,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:28:03,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:28:03,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:28:03,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:28:03,146 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:28:03,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:28:03,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:28:03,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:28:03,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:28:03,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:28:03,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:28:03,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:28:03,148 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:28:03,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:28:03,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:28:03,149 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:28:03,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:28:03,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:28:03,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:28:03,150 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_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45519c8273c53879cf6a170ed74d5bc0be814b1f3243ce6c30d1d3efe9a3cf32 [2022-11-22 02:28:03,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:28:03,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:28:03,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:28:03,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:28:03,460 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:28:03,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/systemc/transmitter.16.cil.c [2022-11-22 02:28:06,450 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:28:06,751 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:28:06,756 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/sv-benchmarks/c/systemc/transmitter.16.cil.c [2022-11-22 02:28:06,775 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/data/355bfa3ac/edcf93d3db8f4bd7a47a017dff06eb5b/FLAG1fad094cb [2022-11-22 02:28:06,788 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/data/355bfa3ac/edcf93d3db8f4bd7a47a017dff06eb5b [2022-11-22 02:28:06,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:28:06,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:28:06,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:28:06,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:28:06,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:28:06,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:28:06" (1/1) ... [2022-11-22 02:28:06,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c05a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:06, skipping insertion in model container [2022-11-22 02:28:06,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:28:06" (1/1) ... [2022-11-22 02:28:06,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:28:06,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:28:06,998 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/sv-benchmarks/c/systemc/transmitter.16.cil.c[706,719] [2022-11-22 02:28:07,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:28:07,205 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:28:07,215 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/sv-benchmarks/c/systemc/transmitter.16.cil.c[706,719] [2022-11-22 02:28:07,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:28:07,314 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:28:07,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07 WrapperNode [2022-11-22 02:28:07,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:28:07,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:28:07,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:28:07,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:28:07,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,420 INFO L138 Inliner]: procedures = 56, calls = 71, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 945 [2022-11-22 02:28:07,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:28:07,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:28:07,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:28:07,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:28:07,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:28:07,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:28:07,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:28:07,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:28:07,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (1/1) ... [2022-11-22 02:28:07,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:28:07,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:07,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:28:07,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01c2e891-ffe3-475f-b9c9-457914c161d7/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:28:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:28:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 02:28:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 02:28:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-22 02:28:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-22 02:28:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 02:28:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 02:28:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 02:28:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 02:28:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 02:28:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 02:28:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 02:28:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 02:28:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:28:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:28:07,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:28:07,782 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:28:07,800 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:28:08,686 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:28:09,324 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:28:09,324 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-22 02:28:09,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:28:09 BoogieIcfgContainer [2022-11-22 02:28:09,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:28:09,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:28:09,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:28:09,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:28:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:28:06" (1/3) ... [2022-11-22 02:28:09,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b4101c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:28:09, skipping insertion in model container [2022-11-22 02:28:09,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:07" (2/3) ... [2022-11-22 02:28:09,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b4101c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:28:09, skipping insertion in model container [2022-11-22 02:28:09,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:28:09" (3/3) ... [2022-11-22 02:28:09,349 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.16.cil.c [2022-11-22 02:28:09,368 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:28:09,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:28:09,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:28:09,445 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;@581abf4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:28:09,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:28:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 163 states have (on average 1.5521472392638036) internal successors, (253), 165 states have internal predecessors, (253), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-22 02:28:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:28:09,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:09,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:09,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:09,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1439967137, now seen corresponding path program 1 times [2022-11-22 02:28:09,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:09,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814349397] [2022-11-22 02:28:09,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:10,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:10,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814349397] [2022-11-22 02:28:10,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814349397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:10,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:10,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:28:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722105711] [2022-11-22 02:28:10,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:10,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:28:10,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:28:10,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:28:10,163 INFO L87 Difference]: Start difference. First operand has 197 states, 163 states have (on average 1.5521472392638036) internal successors, (253), 165 states have internal predecessors, (253), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (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) [2022-11-22 02:28:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:10,869 INFO L93 Difference]: Finished difference Result 578 states and 911 transitions. [2022-11-22 02:28:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:28:10,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (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 70 [2022-11-22 02:28:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:10,893 INFO L225 Difference]: With dead ends: 578 [2022-11-22 02:28:10,893 INFO L226 Difference]: Without dead ends: 382 [2022-11-22 02:28:10,903 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 [2022-11-22 02:28:10,907 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 533 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:10,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 850 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:28:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-22 02:28:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 378. [2022-11-22 02:28:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 317 states have (on average 1.5173501577287065) internal successors, (481), 319 states have internal predecessors, (481), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-22 02:28:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 577 transitions. [2022-11-22 02:28:11,014 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 577 transitions. Word has length 70 [2022-11-22 02:28:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:11,015 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 577 transitions. [2022-11-22 02:28:11,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (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) [2022-11-22 02:28:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 577 transitions. [2022-11-22 02:28:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:28:11,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:11,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:11,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:28:11,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash -466517056, now seen corresponding path program 1 times [2022-11-22 02:28:11,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:11,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566570955] [2022-11-22 02:28:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:11,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:11,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:11,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566570955] [2022-11-22 02:28:11,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566570955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:11,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:11,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:28:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888468730] [2022-11-22 02:28:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:11,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:28:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:11,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:28:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:28:11,292 INFO L87 Difference]: Start difference. First operand 378 states and 577 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:12,489 INFO L93 Difference]: Finished difference Result 2209 states and 3569 transitions. [2022-11-22 02:28:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:28:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 70 [2022-11-22 02:28:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:12,508 INFO L225 Difference]: With dead ends: 2209 [2022-11-22 02:28:12,508 INFO L226 Difference]: Without dead ends: 1836 [2022-11-22 02:28:12,512 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 [2022-11-22 02:28:12,513 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1393 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:12,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 1179 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:28:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2022-11-22 02:28:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1798. [2022-11-22 02:28:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1525 states have (on average 1.5140983606557377) internal successors, (2309), 1533 states have internal predecessors, (2309), 212 states have call successors, (212), 60 states have call predecessors, (212), 60 states have return successors, (334), 205 states have call predecessors, (334), 212 states have call successors, (334) [2022-11-22 02:28:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2855 transitions. [2022-11-22 02:28:12,708 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2855 transitions. Word has length 70 [2022-11-22 02:28:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:12,708 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2855 transitions. [2022-11-22 02:28:12,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2855 transitions. [2022-11-22 02:28:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:28:12,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:12,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:12,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:28:12,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:12,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:12,722 INFO L85 PathProgramCache]: Analyzing trace with hash -363715809, now seen corresponding path program 1 times [2022-11-22 02:28:12,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:12,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562054032] [2022-11-22 02:28:12,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:12,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:13,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:13,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562054032] [2022-11-22 02:28:13,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562054032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:13,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:13,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:28:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397681445] [2022-11-22 02:28:13,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:13,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:28:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:13,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:28:13,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:28:13,011 INFO L87 Difference]: Start difference. First operand 1798 states and 2855 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:14,444 INFO L93 Difference]: Finished difference Result 7117 states and 11663 transitions. [2022-11-22 02:28:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:28:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 70 [2022-11-22 02:28:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:14,499 INFO L225 Difference]: With dead ends: 7117 [2022-11-22 02:28:14,499 INFO L226 Difference]: Without dead ends: 5324 [2022-11-22 02:28:14,521 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 [2022-11-22 02:28:14,525 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1400 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:14,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 1186 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:28:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5324 states. [2022-11-22 02:28:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5324 to 5012. [2022-11-22 02:28:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 4361 states have (on average 1.5228158679202017) internal successors, (6641), 4295 states have internal predecessors, (6641), 486 states have call successors, (486), 148 states have call predecessors, (486), 164 states have return successors, (1016), 569 states have call predecessors, (1016), 486 states have call successors, (1016) [2022-11-22 02:28:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 8143 transitions. [2022-11-22 02:28:15,012 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 8143 transitions. Word has length 70 [2022-11-22 02:28:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:15,012 INFO L495 AbstractCegarLoop]: Abstraction has 5012 states and 8143 transitions. [2022-11-22 02:28:15,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 8143 transitions. [2022-11-22 02:28:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:28:15,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:15,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:15,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:28:15,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1830410272, now seen corresponding path program 1 times [2022-11-22 02:28:15,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:15,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311766244] [2022-11-22 02:28:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:15,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:15,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:15,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311766244] [2022-11-22 02:28:15,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311766244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:15,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:15,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:28:15,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468810939] [2022-11-22 02:28:15,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:15,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:28:15,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:28:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:28:15,255 INFO L87 Difference]: Start difference. First operand 5012 states and 8143 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:17,269 INFO L93 Difference]: Finished difference Result 18573 states and 31325 transitions. [2022-11-22 02:28:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:28:17,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 70 [2022-11-22 02:28:17,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:17,386 INFO L225 Difference]: With dead ends: 18573 [2022-11-22 02:28:17,386 INFO L226 Difference]: Without dead ends: 13566 [2022-11-22 02:28:17,423 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 [2022-11-22 02:28:17,432 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 1364 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:17,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 1225 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:28:17,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2022-11-22 02:28:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 12864. [2022-11-22 02:28:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12864 states, 11367 states have (on average 1.5308348728776282) internal successors, (17401), 11051 states have internal predecessors, (17401), 1076 states have call successors, (1076), 348 states have call predecessors, (1076), 420 states have return successors, (2912), 1465 states have call predecessors, (2912), 1076 states have call successors, (2912) [2022-11-22 02:28:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12864 states to 12864 states and 21389 transitions. [2022-11-22 02:28:18,686 INFO L78 Accepts]: Start accepts. Automaton has 12864 states and 21389 transitions. Word has length 70 [2022-11-22 02:28:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:18,687 INFO L495 AbstractCegarLoop]: Abstraction has 12864 states and 21389 transitions. [2022-11-22 02:28:18,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 12864 states and 21389 transitions. [2022-11-22 02:28:18,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:28:18,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:18,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:18,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:28:18,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash 956932577, now seen corresponding path program 1 times [2022-11-22 02:28:18,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:18,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637774162] [2022-11-22 02:28:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:18,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:19,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:19,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637774162] [2022-11-22 02:28:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637774162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:19,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:19,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:28:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877454398] [2022-11-22 02:28:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:19,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:28:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:28:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:28:19,013 INFO L87 Difference]: Start difference. First operand 12864 states and 21389 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:22,192 INFO L93 Difference]: Finished difference Result 46885 states and 81599 transitions. [2022-11-22 02:28:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:28:22,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 70 [2022-11-22 02:28:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:22,535 INFO L225 Difference]: With dead ends: 46885 [2022-11-22 02:28:22,535 INFO L226 Difference]: Without dead ends: 34026 [2022-11-22 02:28:22,611 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 [2022-11-22 02:28:22,614 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1341 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:22,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1252 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:28:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34026 states. [2022-11-22 02:28:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34026 to 32540. [2022-11-22 02:28:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32540 states, 29077 states have (on average 1.539945661519414) internal successors, (44777), 27971 states have internal predecessors, (44777), 2386 states have call successors, (2386), 820 states have call predecessors, (2386), 1076 states have return successors, (8280), 3749 states have call predecessors, (8280), 2386 states have call successors, (8280) [2022-11-22 02:28:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32540 states to 32540 states and 55443 transitions. [2022-11-22 02:28:25,707 INFO L78 Accepts]: Start accepts. Automaton has 32540 states and 55443 transitions. Word has length 70 [2022-11-22 02:28:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:25,708 INFO L495 AbstractCegarLoop]: Abstraction has 32540 states and 55443 transitions. [2022-11-22 02:28:25,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 32540 states and 55443 transitions. [2022-11-22 02:28:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:28:25,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:25,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:25,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:28:25,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:25,713 INFO L85 PathProgramCache]: Analyzing trace with hash 4194, now seen corresponding path program 1 times [2022-11-22 02:28:25,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:25,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832381142] [2022-11-22 02:28:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:25,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:25,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:25,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832381142] [2022-11-22 02:28:25,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832381142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:25,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:25,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:28:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384002299] [2022-11-22 02:28:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:25,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:28:25,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:28:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:28:25,905 INFO L87 Difference]: Start difference. First operand 32540 states and 55443 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:31,036 INFO L93 Difference]: Finished difference Result 118557 states and 213161 transitions. [2022-11-22 02:28:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:28:31,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 70 [2022-11-22 02:28:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:31,967 INFO L225 Difference]: With dead ends: 118557 [2022-11-22 02:28:31,967 INFO L226 Difference]: Without dead ends: 86022 [2022-11-22 02:28:32,121 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 [2022-11-22 02:28:32,123 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1318 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:32,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 1279 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:28:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86022 states. [2022-11-22 02:28:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86022 to 82948. [2022-11-22 02:28:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82948 states, 74719 states have (on average 1.5505694669361207) internal successors, (115857), 71227 states have internal predecessors, (115857), 5408 states have call successors, (5408), 1980 states have call predecessors, (5408), 2820 states have return successors, (23664), 9741 states have call predecessors, (23664), 5408 states have call successors, (23664) [2022-11-22 02:28:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82948 states to 82948 states and 144929 transitions. [2022-11-22 02:28:39,074 INFO L78 Accepts]: Start accepts. Automaton has 82948 states and 144929 transitions. Word has length 70 [2022-11-22 02:28:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:39,075 INFO L495 AbstractCegarLoop]: Abstraction has 82948 states and 144929 transitions. [2022-11-22 02:28:39,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:39,076 INFO L276 IsEmpty]: Start isEmpty. Operand 82948 states and 144929 transitions. [2022-11-22 02:28:39,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:28:39,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:39,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:39,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:28:39,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1576553565, now seen corresponding path program 1 times [2022-11-22 02:28:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:39,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099651067] [2022-11-22 02:28:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:39,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:39,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099651067] [2022-11-22 02:28:39,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099651067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:39,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:39,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:28:39,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353260518] [2022-11-22 02:28:39,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:39,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:28:39,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:39,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:28:39,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:28:39,284 INFO L87 Difference]: Start difference. First operand 82948 states and 144929 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-11-22 02:28:50,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:50,180 INFO L93 Difference]: Finished difference Result 303477 states and 563595 transitions. [2022-11-22 02:28:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:28:50,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 70 [2022-11-22 02:28:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:51,940 INFO L225 Difference]: With dead ends: 303477 [2022-11-22 02:28:51,941 INFO L226 Difference]: Without dead ends: 220534 [2022-11-22 02:28:52,254 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 [2022-11-22 02:28:52,255 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1295 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:52,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1306 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:28:52,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220534 states.