./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cbdd74a230613e4bdaea53735767d2cb8a557f2fb27b4c6d6d20587e28e4a0f --- 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-2329fc7 [2022-12-13 16:41:00,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:41:00,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:41:01,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:41:01,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:41:01,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:41:01,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:41:01,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:41:01,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:41:01,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:41:01,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:41:01,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:41:01,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:41:01,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:41:01,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:41:01,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:41:01,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:41:01,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:41:01,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:41:01,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:41:01,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:41:01,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:41:01,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:41:01,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:41:01,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:41:01,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:41:01,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:41:01,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:41:01,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:41:01,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:41:01,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:41:01,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:41:01,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:41:01,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:41:01,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:41:01,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:41:01,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:41:01,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:41:01,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:41:01,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:41:01,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:41:01,039 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:41:01,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:41:01,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:41:01,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:41:01,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:41:01,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:41:01,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:41:01,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:41:01,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:41:01,063 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:41:01,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:41:01,064 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:41:01,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:41:01,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:41:01,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:41:01,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:41:01,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:41:01,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:41:01,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:41:01,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:41:01,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:41:01,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:41:01,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:41:01,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:41:01,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:41:01,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:41:01,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:41:01,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:41:01,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:41:01,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:41:01,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:41:01,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:41:01,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:41:01,067 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:41:01,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:41:01,067 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:41:01,067 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cbdd74a230613e4bdaea53735767d2cb8a557f2fb27b4c6d6d20587e28e4a0f [2022-12-13 16:41:01,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:41:01,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:41:01,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:41:01,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:41:01,281 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:41:01,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2022-12-13 16:41:03,911 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:41:04,092 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:41:04,092 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2022-12-13 16:41:04,102 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/data/4e42a1a6a/fc3dc245a729477d9f36f86525fbe827/FLAGa87816f34 [2022-12-13 16:41:04,113 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/data/4e42a1a6a/fc3dc245a729477d9f36f86525fbe827 [2022-12-13 16:41:04,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:41:04,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:41:04,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:41:04,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:41:04,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:41:04,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ab7c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04, skipping insertion in model container [2022-12-13 16:41:04,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:41:04,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:41:04,306 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_77c7d3d5-8231-423e-8983-dd204ca2012d/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c[16977,16990] [2022-12-13 16:41:04,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:41:04,317 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:41:04,371 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_77c7d3d5-8231-423e-8983-dd204ca2012d/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c[16977,16990] [2022-12-13 16:41:04,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:41:04,385 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:41:04,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04 WrapperNode [2022-12-13 16:41:04,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:41:04,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:41:04,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:41:04,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:41:04,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,422 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 414 [2022-12-13 16:41:04,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:41:04,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:41:04,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:41:04,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:41:04,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,450 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:41:04,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:41:04,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:41:04,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:41:04,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (1/1) ... [2022-12-13 16:41:04,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:41:04,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:04,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:41:04,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:41:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:41:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:41:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:41:04,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:41:04,602 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:41:04,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:41:05,006 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:41:05,013 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:41:05,013 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 16:41:05,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:41:05 BoogieIcfgContainer [2022-12-13 16:41:05,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:41:05,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:41:05,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:41:05,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:41:05,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:41:04" (1/3) ... [2022-12-13 16:41:05,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16436b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:41:05, skipping insertion in model container [2022-12-13 16:41:05,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:41:04" (2/3) ... [2022-12-13 16:41:05,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16436b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:41:05, skipping insertion in model container [2022-12-13 16:41:05,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:41:05" (3/3) ... [2022-12-13 16:41:05,022 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2022-12-13 16:41:05,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:41:05,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:41:05,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:41:05,079 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=PETRI_NET, 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;@4c399934, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:41:05,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:41:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 120 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 16:41:05,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:05,090 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] [2022-12-13 16:41:05,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:05,095 INFO L85 PathProgramCache]: Analyzing trace with hash 89596463, now seen corresponding path program 1 times [2022-12-13 16:41:05,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:05,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874336508] [2022-12-13 16:41:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:05,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:05,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874336508] [2022-12-13 16:41:05,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874336508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:05,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:05,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:41:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876312278] [2022-12-13 16:41:05,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:05,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:41:05,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:41:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:41:05,474 INFO L87 Difference]: Start difference. First operand has 121 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 120 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:05,582 INFO L93 Difference]: Finished difference Result 199 states and 336 transitions. [2022-12-13 16:41:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:41:05,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-12-13 16:41:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:05,591 INFO L225 Difference]: With dead ends: 199 [2022-12-13 16:41:05,591 INFO L226 Difference]: Without dead ends: 117 [2022-12-13 16:41:05,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:41:05,595 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 3 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:05,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 776 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:41:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-13 16:41:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-12-13 16:41:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.396551724137931) internal successors, (162), 116 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 162 transitions. [2022-12-13 16:41:05,624 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 162 transitions. Word has length 37 [2022-12-13 16:41:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:05,624 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 162 transitions. [2022-12-13 16:41:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 162 transitions. [2022-12-13 16:41:05,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:41:05,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:05,626 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] [2022-12-13 16:41:05,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:41:05,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:05,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash 446628089, now seen corresponding path program 1 times [2022-12-13 16:41:05,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:05,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982427633] [2022-12-13 16:41:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:05,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:05,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982427633] [2022-12-13 16:41:05,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982427633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:05,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:05,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701284683] [2022-12-13 16:41:05,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:05,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:05,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:05,752 INFO L87 Difference]: Start difference. First operand 117 states and 162 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:05,776 INFO L93 Difference]: Finished difference Result 249 states and 378 transitions. [2022-12-13 16:41:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:05,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 16:41:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:05,780 INFO L225 Difference]: With dead ends: 249 [2022-12-13 16:41:05,780 INFO L226 Difference]: Without dead ends: 179 [2022-12-13 16:41:05,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:05,782 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 91 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:05,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:05,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-13 16:41:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2022-12-13 16:41:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4829545454545454) internal successors, (261), 176 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 261 transitions. [2022-12-13 16:41:05,801 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 261 transitions. Word has length 77 [2022-12-13 16:41:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:05,801 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 261 transitions. [2022-12-13 16:41:05,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 261 transitions. [2022-12-13 16:41:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:41:05,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:05,805 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] [2022-12-13 16:41:05,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:41:05,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:05,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1625058746, now seen corresponding path program 1 times [2022-12-13 16:41:05,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:05,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554409198] [2022-12-13 16:41:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:05,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:05,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554409198] [2022-12-13 16:41:05,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554409198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:05,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:05,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:41:05,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949131592] [2022-12-13 16:41:05,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:05,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:41:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:41:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:05,969 INFO L87 Difference]: Start difference. First operand 177 states and 261 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:06,150 INFO L93 Difference]: Finished difference Result 1087 states and 1759 transitions. [2022-12-13 16:41:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:41:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 16:41:06,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:06,154 INFO L225 Difference]: With dead ends: 1087 [2022-12-13 16:41:06,154 INFO L226 Difference]: Without dead ends: 957 [2022-12-13 16:41:06,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:41:06,155 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 2030 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:06,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 1179 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:41:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-12-13 16:41:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 305. [2022-12-13 16:41:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.5460526315789473) internal successors, (470), 304 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 470 transitions. [2022-12-13 16:41:06,182 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 470 transitions. Word has length 77 [2022-12-13 16:41:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:06,182 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 470 transitions. [2022-12-13 16:41:06,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 470 transitions. [2022-12-13 16:41:06,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 16:41:06,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:06,184 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, 1] [2022-12-13 16:41:06,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:41:06,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:06,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1546109612, now seen corresponding path program 1 times [2022-12-13 16:41:06,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:06,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259557758] [2022-12-13 16:41:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:06,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:06,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259557758] [2022-12-13 16:41:06,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259557758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:06,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:06,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:41:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841949950] [2022-12-13 16:41:06,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:41:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:41:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:41:06,368 INFO L87 Difference]: Start difference. First operand 305 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:06,444 INFO L93 Difference]: Finished difference Result 579 states and 909 transitions. [2022-12-13 16:41:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:41:06,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 16:41:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:06,446 INFO L225 Difference]: With dead ends: 579 [2022-12-13 16:41:06,446 INFO L226 Difference]: Without dead ends: 577 [2022-12-13 16:41:06,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:06,447 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 324 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:06,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 740 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:06,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-12-13 16:41:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 317. [2022-12-13 16:41:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.5253164556962024) internal successors, (482), 316 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 482 transitions. [2022-12-13 16:41:06,466 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 482 transitions. Word has length 78 [2022-12-13 16:41:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:06,467 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 482 transitions. [2022-12-13 16:41:06,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 482 transitions. [2022-12-13 16:41:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 16:41:06,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:06,468 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, 1, 1] [2022-12-13 16:41:06,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:41:06,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:06,469 INFO L85 PathProgramCache]: Analyzing trace with hash -632178990, now seen corresponding path program 1 times [2022-12-13 16:41:06,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:06,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522391258] [2022-12-13 16:41:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:06,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:06,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:06,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522391258] [2022-12-13 16:41:06,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522391258] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:06,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:06,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:06,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822243603] [2022-12-13 16:41:06,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:06,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:06,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:06,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:06,526 INFO L87 Difference]: Start difference. First operand 317 states and 482 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:06,562 INFO L93 Difference]: Finished difference Result 827 states and 1302 transitions. [2022-12-13 16:41:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:06,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-13 16:41:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:06,565 INFO L225 Difference]: With dead ends: 827 [2022-12-13 16:41:06,565 INFO L226 Difference]: Without dead ends: 557 [2022-12-13 16:41:06,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:06,566 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 76 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:06,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-12-13 16:41:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 555. [2022-12-13 16:41:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 1.555956678700361) internal successors, (862), 554 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 862 transitions. [2022-12-13 16:41:06,593 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 862 transitions. Word has length 79 [2022-12-13 16:41:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:06,593 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 862 transitions. [2022-12-13 16:41:06,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 862 transitions. [2022-12-13 16:41:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 16:41:06,594 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:06,594 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, 1, 1] [2022-12-13 16:41:06,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:41:06,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:06,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1939222481, now seen corresponding path program 1 times [2022-12-13 16:41:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:06,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027015321] [2022-12-13 16:41:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:06,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027015321] [2022-12-13 16:41:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027015321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:06,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:06,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677194658] [2022-12-13 16:41:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:06,642 INFO L87 Difference]: Start difference. First operand 555 states and 862 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:06,699 INFO L93 Difference]: Finished difference Result 1065 states and 1679 transitions. [2022-12-13 16:41:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:06,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-13 16:41:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:06,701 INFO L225 Difference]: With dead ends: 1065 [2022-12-13 16:41:06,702 INFO L226 Difference]: Without dead ends: 795 [2022-12-13 16:41:06,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:06,703 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 103 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:06,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 368 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-12-13 16:41:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2022-12-13 16:41:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.5631313131313131) internal successors, (1238), 792 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1238 transitions. [2022-12-13 16:41:06,741 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1238 transitions. Word has length 79 [2022-12-13 16:41:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:06,741 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1238 transitions. [2022-12-13 16:41:06,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1238 transitions. [2022-12-13 16:41:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 16:41:06,742 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:06,742 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, 1, 1, 1] [2022-12-13 16:41:06,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:41:06,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash 843177357, now seen corresponding path program 1 times [2022-12-13 16:41:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:06,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007876601] [2022-12-13 16:41:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:06,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:06,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:06,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007876601] [2022-12-13 16:41:06,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007876601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:06,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:06,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375145104] [2022-12-13 16:41:06,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:06,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:06,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:06,789 INFO L87 Difference]: Start difference. First operand 793 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:06,864 INFO L93 Difference]: Finished difference Result 2185 states and 3448 transitions. [2022-12-13 16:41:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:06,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 16:41:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:06,867 INFO L225 Difference]: With dead ends: 2185 [2022-12-13 16:41:06,868 INFO L226 Difference]: Without dead ends: 1441 [2022-12-13 16:41:06,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:06,869 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 83 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:06,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 326 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:06,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2022-12-13 16:41:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1439. [2022-12-13 16:41:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 1.5618915159944367) internal successors, (2246), 1438 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2246 transitions. [2022-12-13 16:41:06,971 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2246 transitions. Word has length 80 [2022-12-13 16:41:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:06,971 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 2246 transitions. [2022-12-13 16:41:06,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:06,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2246 transitions. [2022-12-13 16:41:06,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 16:41:06,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:06,973 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, 1, 1, 1] [2022-12-13 16:41:06,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:41:06,973 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash -957511571, now seen corresponding path program 1 times [2022-12-13 16:41:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:06,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168389011] [2022-12-13 16:41:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:06,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:07,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:07,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168389011] [2022-12-13 16:41:07,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168389011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:07,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:07,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:07,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043115108] [2022-12-13 16:41:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:07,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:07,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:07,052 INFO L87 Difference]: Start difference. First operand 1439 states and 2246 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:07,277 INFO L93 Difference]: Finished difference Result 4027 states and 6304 transitions. [2022-12-13 16:41:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:07,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 16:41:07,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:07,294 INFO L225 Difference]: With dead ends: 4027 [2022-12-13 16:41:07,294 INFO L226 Difference]: Without dead ends: 2637 [2022-12-13 16:41:07,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:07,297 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 87 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:07,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 339 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2022-12-13 16:41:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2635. [2022-12-13 16:41:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.5497342444950646) internal successors, (4082), 2634 states have internal predecessors, (4082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 4082 transitions. [2022-12-13 16:41:07,452 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 4082 transitions. Word has length 80 [2022-12-13 16:41:07,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:07,452 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 4082 transitions. [2022-12-13 16:41:07,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 4082 transitions. [2022-12-13 16:41:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 16:41:07,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:07,453 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, 1, 1, 1] [2022-12-13 16:41:07,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:41:07,454 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:07,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1565232685, now seen corresponding path program 1 times [2022-12-13 16:41:07,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:07,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438494298] [2022-12-13 16:41:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:07,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:07,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:07,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438494298] [2022-12-13 16:41:07,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438494298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:07,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:07,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951914207] [2022-12-13 16:41:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:07,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:07,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:07,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:07,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:07,494 INFO L87 Difference]: Start difference. First operand 2635 states and 4082 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:07,701 INFO L93 Difference]: Finished difference Result 7423 states and 11476 transitions. [2022-12-13 16:41:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:07,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 16:41:07,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:07,711 INFO L225 Difference]: With dead ends: 7423 [2022-12-13 16:41:07,712 INFO L226 Difference]: Without dead ends: 4837 [2022-12-13 16:41:07,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:07,714 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 95 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:07,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 355 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:07,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4837 states. [2022-12-13 16:41:07,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4837 to 4835. [2022-12-13 16:41:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 4834 states have (on average 1.5295821266032272) internal successors, (7394), 4834 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 7394 transitions. [2022-12-13 16:41:07,978 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 7394 transitions. Word has length 80 [2022-12-13 16:41:07,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:07,978 INFO L495 AbstractCegarLoop]: Abstraction has 4835 states and 7394 transitions. [2022-12-13 16:41:07,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:07,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 7394 transitions. [2022-12-13 16:41:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 16:41:07,979 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:07,979 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, 1, 1, 1] [2022-12-13 16:41:07,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:41:07,980 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:07,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:07,980 INFO L85 PathProgramCache]: Analyzing trace with hash -26351347, now seen corresponding path program 1 times [2022-12-13 16:41:07,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:07,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445441468] [2022-12-13 16:41:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:07,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:08,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:08,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445441468] [2022-12-13 16:41:08,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445441468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:08,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:08,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100056938] [2022-12-13 16:41:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:08,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:08,031 INFO L87 Difference]: Start difference. First operand 4835 states and 7394 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:08,454 INFO L93 Difference]: Finished difference Result 13639 states and 20740 transitions. [2022-12-13 16:41:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:08,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 16:41:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:08,490 INFO L225 Difference]: With dead ends: 13639 [2022-12-13 16:41:08,490 INFO L226 Difference]: Without dead ends: 8853 [2022-12-13 16:41:08,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:08,494 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 99 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:08,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 368 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:08,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2022-12-13 16:41:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 8851. [2022-12-13 16:41:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8851 states, 8850 states have (on average 1.5025988700564972) internal successors, (13298), 8850 states have internal predecessors, (13298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 13298 transitions. [2022-12-13 16:41:09,092 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 13298 transitions. Word has length 80 [2022-12-13 16:41:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:09,092 INFO L495 AbstractCegarLoop]: Abstraction has 8851 states and 13298 transitions. [2022-12-13 16:41:09,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 13298 transitions. [2022-12-13 16:41:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 16:41:09,097 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:09,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:09,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:41:09,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1785241918, now seen corresponding path program 1 times [2022-12-13 16:41:09,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:09,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432736663] [2022-12-13 16:41:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:09,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:09,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:09,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432736663] [2022-12-13 16:41:09,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432736663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:09,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:09,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:09,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513378030] [2022-12-13 16:41:09,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:09,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:09,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:09,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:09,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:09,242 INFO L87 Difference]: Start difference. First operand 8851 states and 13298 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:09,670 INFO L93 Difference]: Finished difference Result 17655 states and 26548 transitions. [2022-12-13 16:41:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:09,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 16:41:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:09,690 INFO L225 Difference]: With dead ends: 17655 [2022-12-13 16:41:09,690 INFO L226 Difference]: Without dead ends: 8853 [2022-12-13 16:41:09,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:09,700 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 80 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:09,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 362 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2022-12-13 16:41:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 8851. [2022-12-13 16:41:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8851 states, 8850 states have (on average 1.4917514124293785) internal successors, (13202), 8850 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 13202 transitions. [2022-12-13 16:41:10,269 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 13202 transitions. Word has length 110 [2022-12-13 16:41:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:10,269 INFO L495 AbstractCegarLoop]: Abstraction has 8851 states and 13202 transitions. [2022-12-13 16:41:10,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 13202 transitions. [2022-12-13 16:41:10,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 16:41:10,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:10,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:10,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:41:10,274 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2076585793, now seen corresponding path program 1 times [2022-12-13 16:41:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548741359] [2022-12-13 16:41:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:10,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:10,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548741359] [2022-12-13 16:41:10,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548741359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:10,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:10,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:10,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060868649] [2022-12-13 16:41:10,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:10,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:10,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:10,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:10,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:10,439 INFO L87 Difference]: Start difference. First operand 8851 states and 13202 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:10,691 INFO L93 Difference]: Finished difference Result 13255 states and 19780 transitions. [2022-12-13 16:41:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:10,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 16:41:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:10,701 INFO L225 Difference]: With dead ends: 13255 [2022-12-13 16:41:10,702 INFO L226 Difference]: Without dead ends: 4453 [2022-12-13 16:41:10,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:10,709 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 74 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:10,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 343 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2022-12-13 16:41:10,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 4451. [2022-12-13 16:41:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4450 states have (on average 1.4782022471910112) internal successors, (6578), 4450 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 6578 transitions. [2022-12-13 16:41:10,910 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 6578 transitions. Word has length 110 [2022-12-13 16:41:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:10,910 INFO L495 AbstractCegarLoop]: Abstraction has 4451 states and 6578 transitions. [2022-12-13 16:41:10,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 6578 transitions. [2022-12-13 16:41:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 16:41:10,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:10,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:10,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:41:10,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1799940288, now seen corresponding path program 1 times [2022-12-13 16:41:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:10,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495301713] [2022-12-13 16:41:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:10,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:10,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:10,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495301713] [2022-12-13 16:41:10,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495301713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:10,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:10,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:10,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734199550] [2022-12-13 16:41:10,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:10,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:10,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:10,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:10,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:10,992 INFO L87 Difference]: Start difference. First operand 4451 states and 6578 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:11,113 INFO L93 Difference]: Finished difference Result 6655 states and 9844 transitions. [2022-12-13 16:41:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 16:41:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:11,116 INFO L225 Difference]: With dead ends: 6655 [2022-12-13 16:41:11,116 INFO L226 Difference]: Without dead ends: 2253 [2022-12-13 16:41:11,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:11,119 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 68 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:11,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 321 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2022-12-13 16:41:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2251. [2022-12-13 16:41:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2250 states have (on average 1.4622222222222223) internal successors, (3290), 2250 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3290 transitions. [2022-12-13 16:41:11,295 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3290 transitions. Word has length 110 [2022-12-13 16:41:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:11,296 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3290 transitions. [2022-12-13 16:41:11,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3290 transitions. [2022-12-13 16:41:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 16:41:11,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:11,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:11,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:41:11,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1010003519, now seen corresponding path program 1 times [2022-12-13 16:41:11,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:11,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21163680] [2022-12-13 16:41:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:11,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21163680] [2022-12-13 16:41:11,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21163680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:11,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:11,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:11,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336192402] [2022-12-13 16:41:11,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:11,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:11,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:11,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:11,376 INFO L87 Difference]: Start difference. First operand 2251 states and 3290 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:11,435 INFO L93 Difference]: Finished difference Result 3355 states and 4912 transitions. [2022-12-13 16:41:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:11,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 16:41:11,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:11,437 INFO L225 Difference]: With dead ends: 3355 [2022-12-13 16:41:11,437 INFO L226 Difference]: Without dead ends: 1153 [2022-12-13 16:41:11,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:11,439 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 62 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:11,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 302 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2022-12-13 16:41:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1151. [2022-12-13 16:41:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.4417391304347826) internal successors, (1658), 1150 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1658 transitions. [2022-12-13 16:41:11,491 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1658 transitions. Word has length 110 [2022-12-13 16:41:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:11,492 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1658 transitions. [2022-12-13 16:41:11,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1658 transitions. [2022-12-13 16:41:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 16:41:11,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:11,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:41:11,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1396251838, now seen corresponding path program 1 times [2022-12-13 16:41:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:11,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199993154] [2022-12-13 16:41:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:12,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:12,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199993154] [2022-12-13 16:41:12,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199993154] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:41:12,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176309406] [2022-12-13 16:41:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:12,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:12,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:12,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:41:12,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:41:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:12,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:41:12,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:41:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:41:12,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:41:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:41:13,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176309406] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:41:13,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:41:13,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-12-13 16:41:13,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557136805] [2022-12-13 16:41:13,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:41:13,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 16:41:13,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:13,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 16:41:13,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-12-13 16:41:13,034 INFO L87 Difference]: Start difference. First operand 1151 states and 1658 transitions. Second operand has 19 states, 19 states have (on average 16.63157894736842) internal successors, (316), 19 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:19,282 INFO L93 Difference]: Finished difference Result 12580 states and 18061 transitions. [2022-12-13 16:41:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-12-13 16:41:19,282 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 16.63157894736842) internal successors, (316), 19 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 16:41:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:19,301 INFO L225 Difference]: With dead ends: 12580 [2022-12-13 16:41:19,301 INFO L226 Difference]: Without dead ends: 11826 [2022-12-13 16:41:19,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1828, Invalid=9514, Unknown=0, NotChecked=0, Total=11342 [2022-12-13 16:41:19,310 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 6976 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6976 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:19,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6976 Valid, 2840 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 16:41:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11826 states. [2022-12-13 16:41:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11826 to 5767. [2022-12-13 16:41:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 1.4419007977800902) internal successors, (8314), 5766 states have internal predecessors, (8314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 8314 transitions. [2022-12-13 16:41:19,987 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 8314 transitions. Word has length 110 [2022-12-13 16:41:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:19,987 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 8314 transitions. [2022-12-13 16:41:19,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.63157894736842) internal successors, (316), 19 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 8314 transitions. [2022-12-13 16:41:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:41:19,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:19,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:19,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:41:20,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 16:41:20,191 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1668141927, now seen corresponding path program 1 times [2022-12-13 16:41:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:20,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884348331] [2022-12-13 16:41:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:20,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:41:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:20,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884348331] [2022-12-13 16:41:20,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884348331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:20,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:20,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:41:20,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38040149] [2022-12-13 16:41:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:20,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:41:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:41:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:20,374 INFO L87 Difference]: Start difference. First operand 5767 states and 8314 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:21,740 INFO L93 Difference]: Finished difference Result 22875 states and 33166 transitions. [2022-12-13 16:41:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:41:21,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 16:41:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:21,764 INFO L225 Difference]: With dead ends: 22875 [2022-12-13 16:41:21,765 INFO L226 Difference]: Without dead ends: 19919 [2022-12-13 16:41:21,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:41:21,769 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1250 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:21,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 1460 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:41:21,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19919 states. [2022-12-13 16:41:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19919 to 8583. [2022-12-13 16:41:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8583 states, 8582 states have (on average 1.4399906781635983) internal successors, (12358), 8582 states have internal predecessors, (12358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 12358 transitions. [2022-12-13 16:41:22,959 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 12358 transitions. Word has length 111 [2022-12-13 16:41:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:22,960 INFO L495 AbstractCegarLoop]: Abstraction has 8583 states and 12358 transitions. [2022-12-13 16:41:22,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 12358 transitions. [2022-12-13 16:41:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:41:22,962 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:22,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:22,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:41:22,963 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:22,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:22,963 INFO L85 PathProgramCache]: Analyzing trace with hash 12117595, now seen corresponding path program 1 times [2022-12-13 16:41:22,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186684818] [2022-12-13 16:41:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:41:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:23,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186684818] [2022-12-13 16:41:23,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186684818] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:23,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:23,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:41:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622957097] [2022-12-13 16:41:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:41:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:41:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:23,095 INFO L87 Difference]: Start difference. First operand 8583 states and 12358 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:25,112 INFO L93 Difference]: Finished difference Result 25691 states and 37210 transitions. [2022-12-13 16:41:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:41:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 16:41:25,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:25,129 INFO L225 Difference]: With dead ends: 25691 [2022-12-13 16:41:25,129 INFO L226 Difference]: Without dead ends: 22735 [2022-12-13 16:41:25,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:41:25,133 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1334 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:25,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1314 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:41:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22735 states. [2022-12-13 16:41:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22735 to 11399. [2022-12-13 16:41:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11399 states, 11398 states have (on average 1.4390243902439024) internal successors, (16402), 11398 states have internal predecessors, (16402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11399 states to 11399 states and 16402 transitions. [2022-12-13 16:41:26,131 INFO L78 Accepts]: Start accepts. Automaton has 11399 states and 16402 transitions. Word has length 111 [2022-12-13 16:41:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:26,131 INFO L495 AbstractCegarLoop]: Abstraction has 11399 states and 16402 transitions. [2022-12-13 16:41:26,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 11399 states and 16402 transitions. [2022-12-13 16:41:26,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:41:26,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:26,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:26,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:41:26,133 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash -13184739, now seen corresponding path program 1 times [2022-12-13 16:41:26,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:26,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67902303] [2022-12-13 16:41:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:26,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:41:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:26,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67902303] [2022-12-13 16:41:26,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67902303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:26,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:26,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:41:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323760048] [2022-12-13 16:41:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:26,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:41:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:26,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:41:26,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:26,280 INFO L87 Difference]: Start difference. First operand 11399 states and 16402 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:28,637 INFO L93 Difference]: Finished difference Result 28507 states and 41254 transitions. [2022-12-13 16:41:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:41:28,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 16:41:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:28,657 INFO L225 Difference]: With dead ends: 28507 [2022-12-13 16:41:28,657 INFO L226 Difference]: Without dead ends: 25551 [2022-12-13 16:41:28,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:41:28,662 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1425 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:28,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 1347 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:41:28,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25551 states. [2022-12-13 16:41:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25551 to 14215. [2022-12-13 16:41:30,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14215 states, 14214 states have (on average 1.4384409736879133) internal successors, (20446), 14214 states have internal predecessors, (20446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14215 states to 14215 states and 20446 transitions. [2022-12-13 16:41:30,185 INFO L78 Accepts]: Start accepts. Automaton has 14215 states and 20446 transitions. Word has length 111 [2022-12-13 16:41:30,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:30,185 INFO L495 AbstractCegarLoop]: Abstraction has 14215 states and 20446 transitions. [2022-12-13 16:41:30,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:30,186 INFO L276 IsEmpty]: Start isEmpty. Operand 14215 states and 20446 transitions. [2022-12-13 16:41:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:41:30,187 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:30,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:30,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:41:30,187 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:30,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2102160607, now seen corresponding path program 1 times [2022-12-13 16:41:30,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:30,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011171786] [2022-12-13 16:41:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:30,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:41:30,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:30,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011171786] [2022-12-13 16:41:30,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011171786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:30,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:30,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:41:30,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947025244] [2022-12-13 16:41:30,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:30,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:41:30,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:30,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:41:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:30,291 INFO L87 Difference]: Start difference. First operand 14215 states and 20446 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:33,835 INFO L93 Difference]: Finished difference Result 31323 states and 45298 transitions. [2022-12-13 16:41:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:41:33,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 16:41:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:33,860 INFO L225 Difference]: With dead ends: 31323 [2022-12-13 16:41:33,861 INFO L226 Difference]: Without dead ends: 28367 [2022-12-13 16:41:33,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:41:33,866 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1228 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:33,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1573 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:41:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28367 states. [2022-12-13 16:41:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28367 to 17031. [2022-12-13 16:41:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17031 states, 17030 states have (on average 1.4380504991192014) internal successors, (24490), 17030 states have internal predecessors, (24490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17031 states to 17031 states and 24490 transitions. [2022-12-13 16:41:35,503 INFO L78 Accepts]: Start accepts. Automaton has 17031 states and 24490 transitions. Word has length 111 [2022-12-13 16:41:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:35,503 INFO L495 AbstractCegarLoop]: Abstraction has 17031 states and 24490 transitions. [2022-12-13 16:41:35,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 17031 states and 24490 transitions. [2022-12-13 16:41:35,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:41:35,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:35,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:35,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:41:35,505 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:35,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2117983273, now seen corresponding path program 1 times [2022-12-13 16:41:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:35,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311746768] [2022-12-13 16:41:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:41:35,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311746768] [2022-12-13 16:41:35,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311746768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:35,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:35,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:41:35,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144673130] [2022-12-13 16:41:35,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:35,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:41:35,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:35,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:41:35,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:35,606 INFO L87 Difference]: Start difference. First operand 17031 states and 24490 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:39,345 INFO L93 Difference]: Finished difference Result 34139 states and 49342 transitions. [2022-12-13 16:41:39,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:41:39,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 16:41:39,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:39,373 INFO L225 Difference]: With dead ends: 34139 [2022-12-13 16:41:39,373 INFO L226 Difference]: Without dead ends: 31183 [2022-12-13 16:41:39,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:41:39,379 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1168 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:39,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 1870 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:41:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31183 states. [2022-12-13 16:41:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31183 to 19847. [2022-12-13 16:41:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19847 states, 19846 states have (on average 1.437770835432833) internal successors, (28534), 19846 states have internal predecessors, (28534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19847 states to 19847 states and 28534 transitions. [2022-12-13 16:41:41,640 INFO L78 Accepts]: Start accepts. Automaton has 19847 states and 28534 transitions. Word has length 111 [2022-12-13 16:41:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:41,640 INFO L495 AbstractCegarLoop]: Abstraction has 19847 states and 28534 transitions. [2022-12-13 16:41:41,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 19847 states and 28534 transitions. [2022-12-13 16:41:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:41:41,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:41,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:41,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:41:41,642 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:41,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:41,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1657991926, now seen corresponding path program 1 times [2022-12-13 16:41:41,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:41,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906433388] [2022-12-13 16:41:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:41,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:41:41,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:41,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906433388] [2022-12-13 16:41:41,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906433388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:41,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:41,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:41:41,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322163689] [2022-12-13 16:41:41,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:41,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:41:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:41:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:41,752 INFO L87 Difference]: Start difference. First operand 19847 states and 28534 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:45,812 INFO L93 Difference]: Finished difference Result 35705 states and 51552 transitions. [2022-12-13 16:41:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:41:45,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 16:41:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:45,841 INFO L225 Difference]: With dead ends: 35705 [2022-12-13 16:41:45,841 INFO L226 Difference]: Without dead ends: 33537 [2022-12-13 16:41:45,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:41:45,847 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1164 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:45,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1672 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:41:45,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33537 states. [2022-12-13 16:41:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33537 to 22201. [2022-12-13 16:41:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22201 states, 22200 states have (on average 1.4371621621621622) internal successors, (31905), 22200 states have internal predecessors, (31905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22201 states to 22201 states and 31905 transitions. [2022-12-13 16:41:48,629 INFO L78 Accepts]: Start accepts. Automaton has 22201 states and 31905 transitions. Word has length 111 [2022-12-13 16:41:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:48,629 INFO L495 AbstractCegarLoop]: Abstraction has 22201 states and 31905 transitions. [2022-12-13 16:41:48,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:48,629 INFO L276 IsEmpty]: Start isEmpty. Operand 22201 states and 31905 transitions. [2022-12-13 16:41:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 16:41:48,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:48,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:48,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:41:48,631 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1861031529, now seen corresponding path program 1 times [2022-12-13 16:41:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:48,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982957721] [2022-12-13 16:41:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:48,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982957721] [2022-12-13 16:41:48,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982957721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:48,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:48,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379799964] [2022-12-13 16:41:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:48,686 INFO L87 Difference]: Start difference. First operand 22201 states and 31905 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:49,834 INFO L93 Difference]: Finished difference Result 31943 states and 45713 transitions. [2022-12-13 16:41:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 16:41:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:49,841 INFO L225 Difference]: With dead ends: 31943 [2022-12-13 16:41:49,841 INFO L226 Difference]: Without dead ends: 9791 [2022-12-13 16:41:49,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:49,850 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 40 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:49,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 301 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:41:49,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9791 states. [2022-12-13 16:41:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9791 to 9501. [2022-12-13 16:41:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9501 states, 9500 states have (on average 1.412421052631579) internal successors, (13418), 9500 states have internal predecessors, (13418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9501 states to 9501 states and 13418 transitions. [2022-12-13 16:41:50,931 INFO L78 Accepts]: Start accepts. Automaton has 9501 states and 13418 transitions. Word has length 114 [2022-12-13 16:41:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:50,931 INFO L495 AbstractCegarLoop]: Abstraction has 9501 states and 13418 transitions. [2022-12-13 16:41:50,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 9501 states and 13418 transitions. [2022-12-13 16:41:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 16:41:50,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:50,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:41:50,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:41:50,933 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:50,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:50,933 INFO L85 PathProgramCache]: Analyzing trace with hash -156099286, now seen corresponding path program 1 times [2022-12-13 16:41:50,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:50,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426234925] [2022-12-13 16:41:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:50,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:51,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:51,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426234925] [2022-12-13 16:41:51,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426234925] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:41:51,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791703602] [2022-12-13 16:41:51,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:51,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:51,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:51,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:41:51,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:41:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:51,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:41:51,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:41:52,277 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:52,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:41:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:53,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791703602] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:41:53,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:41:53,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-12-13 16:41:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991411569] [2022-12-13 16:41:53,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:41:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 16:41:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:53,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 16:41:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-12-13 16:41:53,384 INFO L87 Difference]: Start difference. First operand 9501 states and 13418 transitions. Second operand has 26 states, 26 states have (on average 11.884615384615385) internal successors, (309), 25 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:00,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:42:00,630 INFO L93 Difference]: Finished difference Result 54125 states and 75303 transitions. [2022-12-13 16:42:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 16:42:00,631 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.884615384615385) internal successors, (309), 25 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 16:42:00,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:42:00,667 INFO L225 Difference]: With dead ends: 54125 [2022-12-13 16:42:00,667 INFO L226 Difference]: Without dead ends: 45647 [2022-12-13 16:42:00,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=464, Invalid=1428, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 16:42:00,677 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 2130 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:42:00,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 1299 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:42:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45647 states. [2022-12-13 16:42:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45647 to 23690. [2022-12-13 16:42:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23690 states, 23689 states have (on average 1.4002279539026552) internal successors, (33170), 23689 states have internal predecessors, (33170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23690 states to 23690 states and 33170 transitions. [2022-12-13 16:42:04,454 INFO L78 Accepts]: Start accepts. Automaton has 23690 states and 33170 transitions. Word has length 114 [2022-12-13 16:42:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:42:04,455 INFO L495 AbstractCegarLoop]: Abstraction has 23690 states and 33170 transitions. [2022-12-13 16:42:04,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.884615384615385) internal successors, (309), 25 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 23690 states and 33170 transitions. [2022-12-13 16:42:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 16:42:04,456 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:42:04,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:42:04,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:42:04,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:04,658 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:42:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash -680764048, now seen corresponding path program 1 times [2022-12-13 16:42:04,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:04,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991799379] [2022-12-13 16:42:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:04,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:04,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991799379] [2022-12-13 16:42:04,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991799379] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:42:04,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626400173] [2022-12-13 16:42:04,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:04,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:04,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:42:04,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:42:04,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:42:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:05,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 16:42:05,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:42:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:06,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:42:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:11,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626400173] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:42:11,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:42:11,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 20] total 41 [2022-12-13 16:42:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963453921] [2022-12-13 16:42:11,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:42:11,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-13 16:42:11,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:11,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-13 16:42:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 16:42:11,279 INFO L87 Difference]: Start difference. First operand 23690 states and 33170 transitions. Second operand has 41 states, 41 states have (on average 7.536585365853658) internal successors, (309), 41 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:45:47,614 INFO L93 Difference]: Finished difference Result 619699 states and 851110 transitions. [2022-12-13 16:45:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 378 states. [2022-12-13 16:45:47,615 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.536585365853658) internal successors, (309), 41 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 16:45:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:45:48,477 INFO L225 Difference]: With dead ends: 619699 [2022-12-13 16:45:48,478 INFO L226 Difference]: Without dead ends: 596060 [2022-12-13 16:45:48,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76005 ImplicationChecksByTransitivity, 78.9s TimeCoverageRelationStatistics Valid=27792, Invalid=145680, Unknown=0, NotChecked=0, Total=173472 [2022-12-13 16:45:48,595 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 12778 mSDsluCounter, 11064 mSDsCounter, 0 mSdLazyCounter, 8032 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12778 SdHoareTripleChecker+Valid, 11956 SdHoareTripleChecker+Invalid, 8261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 8032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:45:48,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12778 Valid, 11956 Invalid, 8261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [229 Valid, 8032 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-12-13 16:45:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596060 states. [2022-12-13 16:46:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596060 to 219849. [2022-12-13 16:46:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219849 states, 219848 states have (on average 1.368854845165751) internal successors, (300940), 219848 states have internal predecessors, (300940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219849 states to 219849 states and 300940 transitions. [2022-12-13 16:46:37,436 INFO L78 Accepts]: Start accepts. Automaton has 219849 states and 300940 transitions. Word has length 114 [2022-12-13 16:46:37,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:46:37,436 INFO L495 AbstractCegarLoop]: Abstraction has 219849 states and 300940 transitions. [2022-12-13 16:46:37,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.536585365853658) internal successors, (309), 41 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 219849 states and 300940 transitions. [2022-12-13 16:46:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 16:46:37,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:46:37,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:46:37,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:46:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 16:46:37,642 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:46:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:37,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1835179884, now seen corresponding path program 1 times [2022-12-13 16:46:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:37,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223028080] [2022-12-13 16:46:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:37,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:46:37,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:37,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223028080] [2022-12-13 16:46:37,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223028080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:37,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:37,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:46:37,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063306703] [2022-12-13 16:46:37,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:37,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:46:37,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:37,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:46:37,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:46:37,716 INFO L87 Difference]: Start difference. First operand 219849 states and 300940 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:47:35,141 INFO L93 Difference]: Finished difference Result 482592 states and 664660 transitions. [2022-12-13 16:47:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:35,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-13 16:47:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:47:35,554 INFO L225 Difference]: With dead ends: 482592 [2022-12-13 16:47:35,554 INFO L226 Difference]: Without dead ends: 276674 [2022-12-13 16:47:35,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:35,662 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 79 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:47:35,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 359 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:47:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276674 states. [2022-12-13 16:48:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276674 to 262280. [2022-12-13 16:48:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262280 states, 262279 states have (on average 1.3688324265381522) internal successors, (359016), 262279 states have internal predecessors, (359016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262280 states to 262280 states and 359016 transitions. [2022-12-13 16:48:33,014 INFO L78 Accepts]: Start accepts. Automaton has 262280 states and 359016 transitions. Word has length 115 [2022-12-13 16:48:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:48:33,014 INFO L495 AbstractCegarLoop]: Abstraction has 262280 states and 359016 transitions. [2022-12-13 16:48:33,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 262280 states and 359016 transitions. [2022-12-13 16:48:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 16:48:33,022 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:48:33,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:48:33,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:48:33,023 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:48:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:48:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2122329668, now seen corresponding path program 1 times [2022-12-13 16:48:33,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:48:33,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697683761] [2022-12-13 16:48:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:33,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:48:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:48:33,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:48:33,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697683761] [2022-12-13 16:48:33,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697683761] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:48:33,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935660710] [2022-12-13 16:48:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:33,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:48:33,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:48:33,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:48:33,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c7d3d5-8231-423e-8983-dd204ca2012d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:48:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:33,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:48:33,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:48:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:48:34,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:48:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:48:35,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935660710] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:48:35,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:48:35,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2022-12-13 16:48:35,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445749594] [2022-12-13 16:48:35,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:48:35,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 16:48:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:48:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 16:48:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-12-13 16:48:35,843 INFO L87 Difference]: Start difference. First operand 262280 states and 359016 transitions. Second operand has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 31 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)