./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur --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 062c7418109a213aa13d25a99437d8241cca4f6492c123259890838dc94aff90 --- 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-38b53e6 [2022-11-26 00:25:50,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:25:50,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:25:50,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:25:50,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:25:50,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:25:50,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:25:50,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:25:50,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:25:50,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:25:50,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:25:50,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:25:50,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:25:50,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:25:50,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:25:50,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:25:50,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:25:50,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:25:50,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:25:50,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:25:50,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:25:50,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:25:50,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:25:50,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:25:50,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:25:50,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:25:50,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:25:50,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:25:50,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:25:50,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:25:50,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:25:50,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:25:50,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:25:50,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:25:50,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:25:50,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:25:50,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:25:50,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:25:50,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:25:50,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:25:50,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:25:50,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:25:50,331 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:25:50,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:25:50,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:25:50,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:25:50,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:25:50,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:25:50,334 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:25:50,334 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:25:50,334 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:25:50,335 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:25:50,335 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:25:50,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:25:50,335 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:25:50,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:25:50,336 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:25:50,336 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:25:50,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:25:50,337 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:25:50,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:25:50,338 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:25:50,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:25:50,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:25:50,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:25:50,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:25:50,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:25:50,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:25:50,340 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:25:50,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:25:50,340 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:25:50,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:25:50,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:25:50,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:25:50,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:25:50,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:25:50,342 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:25:50,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:25:50,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:25:50,342 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:25:50,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:25:50,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:25:50,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:25:50,343 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_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 062c7418109a213aa13d25a99437d8241cca4f6492c123259890838dc94aff90 [2022-11-26 00:25:50,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:25:50,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:25:50,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:25:50,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:25:50,679 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:25:50,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/systemc/transmitter.12.cil.c [2022-11-26 00:25:53,788 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:25:54,066 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:25:54,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/sv-benchmarks/c/systemc/transmitter.12.cil.c [2022-11-26 00:25:54,089 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/data/38269cb6d/502a4ec68deb4947ad1cdbaf6a8f4e12/FLAGae2f4c829 [2022-11-26 00:25:54,105 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/data/38269cb6d/502a4ec68deb4947ad1cdbaf6a8f4e12 [2022-11-26 00:25:54,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:25:54,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:25:54,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:25:54,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:25:54,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:25:54,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15db15d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54, skipping insertion in model container [2022-11-26 00:25:54,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:25:54,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:25:54,338 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_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/sv-benchmarks/c/systemc/transmitter.12.cil.c[706,719] [2022-11-26 00:25:54,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:25:54,551 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:25:54,567 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_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/sv-benchmarks/c/systemc/transmitter.12.cil.c[706,719] [2022-11-26 00:25:54,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:25:54,722 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:25:54,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54 WrapperNode [2022-11-26 00:25:54,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:25:54,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:25:54,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:25:54,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:25:54,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,817 INFO L138 Inliner]: procedures = 52, calls = 66, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 834 [2022-11-26 00:25:54,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:25:54,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:25:54,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:25:54,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:25:54,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:25:54,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:25:54,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:25:54,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:25:54,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (1/1) ... [2022-11-26 00:25:54,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:25:54,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:25:54,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:25:54,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64d5c1c1-4d91-4855-a7fa-1662b92b19bf/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:25:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:25:55,013 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-26 00:25:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-26 00:25:55,013 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-26 00:25:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-26 00:25:55,014 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-26 00:25:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-26 00:25:55,014 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-26 00:25:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-26 00:25:55,014 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-26 00:25:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-26 00:25:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-26 00:25:55,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-26 00:25:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:25:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:25:55,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:25:55,170 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:25:55,172 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:25:56,321 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:25:56,810 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:25:56,810 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-26 00:25:56,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:25:56 BoogieIcfgContainer [2022-11-26 00:25:56,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:25:56,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:25:56,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:25:56,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:25:56,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:25:54" (1/3) ... [2022-11-26 00:25:56,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4180a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:25:56, skipping insertion in model container [2022-11-26 00:25:56,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:54" (2/3) ... [2022-11-26 00:25:56,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4180a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:25:56, skipping insertion in model container [2022-11-26 00:25:56,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:25:56" (3/3) ... [2022-11-26 00:25:56,830 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.12.cil.c [2022-11-26 00:25:56,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:25:56,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:25:56,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:25:56,920 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;@75094f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:25:56,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:25:56,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 153 states have (on average 1.5620915032679739) internal successors, (239), 155 states have internal predecessors, (239), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-26 00:25:56,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:25:56,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:25:56,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:25:56,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:25:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:25:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2024217964, now seen corresponding path program 1 times [2022-11-26 00:25:56,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:25:56,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827426150] [2022-11-26 00:25:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:25:56,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:25:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:25:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:25:57,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:25:57,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827426150] [2022-11-26 00:25:57,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827426150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:25:57,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:25:57,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:25:57,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105479999] [2022-11-26 00:25:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:25:57,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:25:57,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:25:57,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:25:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:25:57,720 INFO L87 Difference]: Start difference. First operand has 186 states, 153 states have (on average 1.5620915032679739) internal successors, (239), 155 states have internal predecessors, (239), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2022-11-26 00:25:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:25:58,287 INFO L93 Difference]: Finished difference Result 545 states and 862 transitions. [2022-11-26 00:25:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:25:58,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 77 [2022-11-26 00:25:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:25:58,301 INFO L225 Difference]: With dead ends: 545 [2022-11-26 00:25:58,302 INFO L226 Difference]: Without dead ends: 360 [2022-11-26 00:25:58,307 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 [2022-11-26 00:25:58,310 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 507 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:25:58,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 802 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:25:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-26 00:25:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356. [2022-11-26 00:25:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 297 states have (on average 1.5252525252525253) internal successors, (453), 299 states have internal predecessors, (453), 46 states have call successors, (46), 12 states have call predecessors, (46), 12 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-26 00:25:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 545 transitions. [2022-11-26 00:25:58,408 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 545 transitions. Word has length 77 [2022-11-26 00:25:58,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:25:58,408 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 545 transitions. [2022-11-26 00:25:58,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2022-11-26 00:25:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 545 transitions. [2022-11-26 00:25:58,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:25:58,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:25:58,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:25:58,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:25:58,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:25:58,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:25:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash -133255059, now seen corresponding path program 1 times [2022-11-26 00:25:58,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:25:58,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121609984] [2022-11-26 00:25:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:25:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:25:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:25:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:25:58,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:25:58,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121609984] [2022-11-26 00:25:58,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121609984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:25:58,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:25:58,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:25:58,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832348868] [2022-11-26 00:25:58,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:25:58,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:25:58,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:25:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:25:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:25:58,603 INFO L87 Difference]: Start difference. First operand 356 states and 545 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:25:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:25:59,661 INFO L93 Difference]: Finished difference Result 2077 states and 3363 transitions. [2022-11-26 00:25:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:25:59,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2022-11-26 00:25:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:25:59,675 INFO L225 Difference]: With dead ends: 2077 [2022-11-26 00:25:59,676 INFO L226 Difference]: Without dead ends: 1726 [2022-11-26 00:25:59,679 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 [2022-11-26 00:25:59,680 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1199 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:25:59,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1295 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:25:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2022-11-26 00:25:59,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1690. [2022-11-26 00:25:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1427 states have (on average 1.5227750525578136) internal successors, (2173), 1435 states have internal predecessors, (2173), 202 states have call successors, (202), 60 states have call predecessors, (202), 60 states have return successors, (316), 195 states have call predecessors, (316), 202 states have call successors, (316) [2022-11-26 00:25:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2691 transitions. [2022-11-26 00:25:59,821 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2691 transitions. Word has length 77 [2022-11-26 00:25:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:25:59,821 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2691 transitions. [2022-11-26 00:25:59,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:25:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2691 transitions. [2022-11-26 00:25:59,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:25:59,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:25:59,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:25:59,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:25:59,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:25:59,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:25:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash 895277102, now seen corresponding path program 1 times [2022-11-26 00:25:59,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:25:59,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352983983] [2022-11-26 00:25:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:25:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:25:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:26:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:26:00,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:26:00,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352983983] [2022-11-26 00:26:00,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352983983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:26:00,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:26:00,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:26:00,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266012730] [2022-11-26 00:26:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:26:00,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:26:00,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:26:00,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:26:00,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:26:00,117 INFO L87 Difference]: Start difference. First operand 1690 states and 2691 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:26:01,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:26:01,406 INFO L93 Difference]: Finished difference Result 6683 states and 10977 transitions. [2022-11-26 00:26:01,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:26:01,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2022-11-26 00:26:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:26:01,454 INFO L225 Difference]: With dead ends: 6683 [2022-11-26 00:26:01,454 INFO L226 Difference]: Without dead ends: 4998 [2022-11-26 00:26:01,470 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 [2022-11-26 00:26:01,474 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1203 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:26:01,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1319 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:26:01,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2022-11-26 00:26:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4704. [2022-11-26 00:26:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4704 states, 4075 states have (on average 1.5334969325153374) internal successors, (6249), 4017 states have internal predecessors, (6249), 464 states have call successors, (464), 148 states have call predecessors, (464), 164 states have return successors, (958), 539 states have call predecessors, (958), 464 states have call successors, (958) [2022-11-26 00:26:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7671 transitions. [2022-11-26 00:26:01,906 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7671 transitions. Word has length 77 [2022-11-26 00:26:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:26:01,908 INFO L495 AbstractCegarLoop]: Abstraction has 4704 states and 7671 transitions. [2022-11-26 00:26:01,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:26:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7671 transitions. [2022-11-26 00:26:01,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:26:01,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:26:01,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:26:01,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:26:01,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:26:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:26:01,915 INFO L85 PathProgramCache]: Analyzing trace with hash -246370291, now seen corresponding path program 1 times [2022-11-26 00:26:01,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:26:01,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486616886] [2022-11-26 00:26:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:26:01,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:26:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:26:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:26:02,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:26:02,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486616886] [2022-11-26 00:26:02,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486616886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:26:02,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:26:02,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:26:02,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285304989] [2022-11-26 00:26:02,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:26:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:26:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:26:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:26:02,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:26:02,103 INFO L87 Difference]: Start difference. First operand 4704 states and 7671 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:26:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:26:04,023 INFO L93 Difference]: Finished difference Result 17415 states and 29463 transitions. [2022-11-26 00:26:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:26:04,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2022-11-26 00:26:04,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:26:04,134 INFO L225 Difference]: With dead ends: 17415 [2022-11-26 00:26:04,134 INFO L226 Difference]: Without dead ends: 12716 [2022-11-26 00:26:04,164 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 [2022-11-26 00:26:04,166 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 1198 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:26:04,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 1305 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:26:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2022-11-26 00:26:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 12048. [2022-11-26 00:26:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12048 states, 10597 states have (on average 1.543172596017741) internal successors, (16353), 10317 states have internal predecessors, (16353), 1030 states have call successors, (1030), 348 states have call predecessors, (1030), 420 states have return successors, (2738), 1383 states have call predecessors, (2738), 1030 states have call successors, (2738) [2022-11-26 00:26:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12048 states to 12048 states and 20121 transitions. [2022-11-26 00:26:05,140 INFO L78 Accepts]: Start accepts. Automaton has 12048 states and 20121 transitions. Word has length 77 [2022-11-26 00:26:05,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:26:05,141 INFO L495 AbstractCegarLoop]: Abstraction has 12048 states and 20121 transitions. [2022-11-26 00:26:05,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:26:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 12048 states and 20121 transitions. [2022-11-26 00:26:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:26:05,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:26:05,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:26:05,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:26:05,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:26:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:26:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash -947938516, now seen corresponding path program 1 times [2022-11-26 00:26:05,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:26:05,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288653185] [2022-11-26 00:26:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:26:05,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:26:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:26:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:26:05,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:26:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288653185] [2022-11-26 00:26:05,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288653185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:26:05,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:26:05,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:26:05,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454579998] [2022-11-26 00:26:05,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:26:05,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:26:05,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:26:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:26:05,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:26:05,314 INFO L87 Difference]: Start difference. First operand 12048 states and 20121 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:26:08,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:26:08,250 INFO L93 Difference]: Finished difference Result 43847 states and 76605 transitions. [2022-11-26 00:26:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:26:08,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2022-11-26 00:26:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:26:08,480 INFO L225 Difference]: With dead ends: 43847 [2022-11-26 00:26:08,480 INFO L226 Difference]: Without dead ends: 31804 [2022-11-26 00:26:08,544 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 [2022-11-26 00:26:08,547 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 1193 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:26:08,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1302 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:26:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31804 states. [2022-11-26 00:26:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31804 to 30384. [2022-11-26 00:26:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30384 states, 27015 states have (on average 1.5541365907828983) internal successors, (41985), 26037 states have internal predecessors, (41985), 2292 states have call successors, (2292), 820 states have call predecessors, (2292), 1076 states have return successors, (7766), 3527 states have call predecessors, (7766), 2292 states have call successors, (7766) [2022-11-26 00:26:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30384 states to 30384 states and 52043 transitions. [2022-11-26 00:26:11,378 INFO L78 Accepts]: Start accepts. Automaton has 30384 states and 52043 transitions. Word has length 77 [2022-11-26 00:26:11,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:26:11,378 INFO L495 AbstractCegarLoop]: Abstraction has 30384 states and 52043 transitions. [2022-11-26 00:26:11,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:26:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 30384 states and 52043 transitions. [2022-11-26 00:26:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:26:11,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:26:11,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:26:11,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:26:11,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:26:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:26:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2039024011, now seen corresponding path program 1 times [2022-11-26 00:26:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:26:11,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883797613] [2022-11-26 00:26:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:26:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:26:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:26:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:26:11,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:26:11,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883797613] [2022-11-26 00:26:11,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883797613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:26:11,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:26:11,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:26:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117520058] [2022-11-26 00:26:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:26:11,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:26:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:26:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:26:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:26:11,561 INFO L87 Difference]: Start difference. First operand 30384 states and 52043 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:26:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:26:16,740 INFO L93 Difference]: Finished difference Result 110463 states and 199563 transitions. [2022-11-26 00:26:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:26:16,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2022-11-26 00:26:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:26:17,700 INFO L225 Difference]: With dead ends: 110463 [2022-11-26 00:26:17,700 INFO L226 Difference]: Without dead ends: 80084 [2022-11-26 00:26:17,824 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 [2022-11-26 00:26:17,826 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1188 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:26:17,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1299 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 00:26:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80084 states. [2022-11-26 00:26:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80084 to 77140. [2022-11-26 00:26:23,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77140 states, 69101 states have (on average 1.56699613609065) internal successors, (108281), 66029 states have internal predecessors, (108281), 5218 states have call successors, (5218), 1980 states have call predecessors, (5218), 2820 states have return successors, (22146), 9131 states have call predecessors, (22146), 5218 states have call successors, (22146) [2022-11-26 00:26:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77140 states to 77140 states and 135645 transitions. [2022-11-26 00:26:24,192 INFO L78 Accepts]: Start accepts. Automaton has 77140 states and 135645 transitions. Word has length 77 [2022-11-26 00:26:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:26:24,194 INFO L495 AbstractCegarLoop]: Abstraction has 77140 states and 135645 transitions. [2022-11-26 00:26:24,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-11-26 00:26:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 77140 states and 135645 transitions. [2022-11-26 00:26:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:26:24,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:26:24,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:26:24,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:26:24,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:26:24,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:26:24,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1855952086, now seen corresponding path program 1 times [2022-11-26 00:26:24,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:26:24,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867660938] [2022-11-26 00:26:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:26:24,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:26:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:26:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:26:24,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:26:24,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867660938] [2022-11-26 00:26:24,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867660938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:26:24,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:26:24,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:26:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736496297] [2022-11-26 00:26:24,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:26:24,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:26:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:26:24,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:26:24,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:26:24,336 INFO L87 Difference]: Start difference. First operand 77140 states and 135645 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2022-11-26 00:26:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:26:32,173 INFO L93 Difference]: Finished difference Result 229999 states and 421184 transitions. [2022-11-26 00:26:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:26:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 77 [2022-11-26 00:26:32,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:26:33,165 INFO L225 Difference]: With dead ends: 229999 [2022-11-26 00:26:33,166 INFO L226 Difference]: Without dead ends: 152864 [2022-11-26 00:26:33,454 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 [2022-11-26 00:26:33,458 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 534 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:26:33,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 800 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:26:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152864 states. [2022-11-26 00:26:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152864 to 152252. [2022-11-26 00:26:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152252 states, 136369 states have (on average 1.5567247688257595) internal successors, (212289), 130644 states have internal predecessors, (212289), 10242 states have call successors, (10242), 3960 states have call predecessors, (10242), 5640 states have return successors, (42770), 17648 states have call predecessors, (42770), 10242 states have call successors, (42770) [2022-11-26 00:26:44,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152252 states to 152252 states and 265301 transitions. [2022-11-26 00:26:44,291 INFO L78 Accepts]: Start accepts. Automaton has 152252 states and 265301 transitions. Word has length 77 [2022-11-26 00:26:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:26:44,292 INFO L495 AbstractCegarLoop]: Abstraction has 152252 states and 265301 transitions. [2022-11-26 00:26:44,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2022-11-26 00:26:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 152252 states and 265301 transitions. [2022-11-26 00:26:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:26:44,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:26:44,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:26:44,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:26:44,296 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:26:44,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:26:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash 810364937, now seen corresponding path program 1 times [2022-11-26 00:26:44,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:26:44,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983600161] [2022-11-26 00:26:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:26:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:26:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:26:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:26:44,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:26:44,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983600161] [2022-11-26 00:26:44,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983600161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:26:44,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:26:44,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:26:44,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616998858] [2022-11-26 00:26:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:26:44,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:26:44,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:26:44,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:26:44,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:26:44,400 INFO L87 Difference]: Start difference. First operand 152252 states and 265301 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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)