./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label42.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R --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 96107ddac20ae25720715e53c2e276b0ff7d668effb9cd422fe5eafc03582006 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:39:26,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:39:26,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:39:26,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:39:26,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:39:26,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:39:26,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:39:26,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:39:26,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:39:26,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:39:26,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:39:26,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:39:26,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:39:26,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:39:26,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:39:26,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:39:26,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:39:26,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:39:26,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:39:26,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:39:26,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:39:26,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:39:26,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:39:26,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:39:26,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:39:26,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:39:26,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:39:26,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:39:26,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:39:26,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:39:26,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:39:26,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:39:26,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:39:26,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:39:26,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:39:26,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:39:26,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:39:26,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:39:26,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:39:26,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:39:26,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:39:26,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:39:26,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:39:26,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:39:26,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:39:26,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:39:26,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:39:26,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:39:26,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:39:26,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:39:26,512 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:39:26,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:39:26,512 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:39:26,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:39:26,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:39:26,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:39:26,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:39:26,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:39:26,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:39:26,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:39:26,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:39:26,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:39:26,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:39:26,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:39:26,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:39:26,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:39:26,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:39:26,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:39:26,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:39:26,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:39:26,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:39:26,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:39:26,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:39:26,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:39:26,517 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:39:26,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:39:26,517 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_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96107ddac20ae25720715e53c2e276b0ff7d668effb9cd422fe5eafc03582006 [2022-11-25 17:39:26,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:39:26,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:39:26,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:39:26,856 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:39:26,857 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:39:26,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem17_label42.c [2022-11-25 17:39:30,010 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:39:30,473 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:39:30,474 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/sv-benchmarks/c/eca-rers2012/Problem17_label42.c [2022-11-25 17:39:30,493 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/data/f23fcc225/8d5924783dbf4aa1828bc8c48e3d8171/FLAG264eb9816 [2022-11-25 17:39:30,509 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/data/f23fcc225/8d5924783dbf4aa1828bc8c48e3d8171 [2022-11-25 17:39:30,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:39:30,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:39:30,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:39:30,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:39:30,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:39:30,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380968d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30, skipping insertion in model container [2022-11-25 17:39:30,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:39:30,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:39:30,943 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_ee60e694-75b6-4197-b30b-1ca250e65854/sv-benchmarks/c/eca-rers2012/Problem17_label42.c[6070,6083] [2022-11-25 17:39:31,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:39:31,793 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:39:31,831 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_ee60e694-75b6-4197-b30b-1ca250e65854/sv-benchmarks/c/eca-rers2012/Problem17_label42.c[6070,6083] [2022-11-25 17:39:32,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:39:32,217 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:39:32,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32 WrapperNode [2022-11-25 17:39:32,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:39:32,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:39:32,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:39:32,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:39:32,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,568 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-25 17:39:32,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:39:32,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:39:32,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:39:32,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:39:32,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,942 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:32,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:33,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:39:33,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:39:33,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:39:33,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:39:33,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (1/1) ... [2022-11-25 17:39:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:39:33,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:39:33,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:39:33,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:39:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:39:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:39:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:39:33,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:39:33,257 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:39:33,260 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:39:37,699 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:39:37,721 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:39:37,722 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:39:37,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:39:37 BoogieIcfgContainer [2022-11-25 17:39:37,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:39:37,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:39:37,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:39:37,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:39:37,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:39:30" (1/3) ... [2022-11-25 17:39:37,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743e2815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:39:37, skipping insertion in model container [2022-11-25 17:39:37,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:32" (2/3) ... [2022-11-25 17:39:37,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743e2815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:39:37, skipping insertion in model container [2022-11-25 17:39:37,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:39:37" (3/3) ... [2022-11-25 17:39:37,742 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label42.c [2022-11-25 17:39:37,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:39:37,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:39:37,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:39:37,835 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;@7d3907c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:39:37,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:39:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) [2022-11-25 17:39:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 17:39:37,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:39:37,858 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] [2022-11-25 17:39:37,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:39:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2102454322, now seen corresponding path program 1 times [2022-11-25 17:39:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:37,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600396744] [2022-11-25 17:39:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:38,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:38,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600396744] [2022-11-25 17:39:38,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600396744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:38,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:38,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:39:38,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632661058] [2022-11-25 17:39:38,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:38,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:38,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:38,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:38,316 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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) [2022-11-25 17:39:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:39:42,384 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2022-11-25 17:39:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:42,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 40 [2022-11-25 17:39:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:39:42,418 INFO L225 Difference]: With dead ends: 1667 [2022-11-25 17:39:42,423 INFO L226 Difference]: Without dead ends: 998 [2022-11-25 17:39:42,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:42,436 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 505 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:39:42,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 17:39:42,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-11-25 17:39:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2022-11-25 17:39:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 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) [2022-11-25 17:39:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2022-11-25 17:39:42,535 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 40 [2022-11-25 17:39:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:39:42,536 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2022-11-25 17:39:42,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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) [2022-11-25 17:39:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2022-11-25 17:39:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 17:39:42,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:39:42,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:42,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:39:42,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:39:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash 48341583, now seen corresponding path program 1 times [2022-11-25 17:39:42,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:42,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778461405] [2022-11-25 17:39:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:42,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:42,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:42,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778461405] [2022-11-25 17:39:42,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778461405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:42,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:42,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:39:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065058745] [2022-11-25 17:39:42,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:42,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:42,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:42,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:42,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:42,832 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 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) [2022-11-25 17:39:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:39:46,712 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2022-11-25 17:39:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:46,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 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 105 [2022-11-25 17:39:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:39:46,721 INFO L225 Difference]: With dead ends: 2841 [2022-11-25 17:39:46,721 INFO L226 Difference]: Without dead ends: 1861 [2022-11-25 17:39:46,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:46,725 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:39:46,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 17:39:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2022-11-25 17:39:46,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2022-11-25 17:39:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 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) [2022-11-25 17:39:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2022-11-25 17:39:46,785 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 105 [2022-11-25 17:39:46,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:39:46,786 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2022-11-25 17:39:46,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 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) [2022-11-25 17:39:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2022-11-25 17:39:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-25 17:39:46,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:39:46,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:46,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:39:46,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:39:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1523238332, now seen corresponding path program 1 times [2022-11-25 17:39:46,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:46,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664280293] [2022-11-25 17:39:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:46,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:47,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:47,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664280293] [2022-11-25 17:39:47,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664280293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:47,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:47,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:39:47,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347919994] [2022-11-25 17:39:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:47,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:47,465 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2022-11-25 17:39:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:39:51,565 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2022-11-25 17:39:51,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:51,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 145 [2022-11-25 17:39:51,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:39:51,579 INFO L225 Difference]: With dead ends: 4591 [2022-11-25 17:39:51,579 INFO L226 Difference]: Without dead ends: 2736 [2022-11-25 17:39:51,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:51,591 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:39:51,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 17:39:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-11-25 17:39:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2022-11-25 17:39:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 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) [2022-11-25 17:39:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2022-11-25 17:39:51,659 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 145 [2022-11-25 17:39:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:39:51,661 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2022-11-25 17:39:51,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2022-11-25 17:39:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2022-11-25 17:39:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-25 17:39:51,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:39:51,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:51,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:39:51,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:39:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:51,678 INFO L85 PathProgramCache]: Analyzing trace with hash 652145173, now seen corresponding path program 1 times [2022-11-25 17:39:51,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:51,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522598436] [2022-11-25 17:39:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:51,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:51,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:51,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522598436] [2022-11-25 17:39:51,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522598436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:51,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:51,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:39:51,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96988125] [2022-11-25 17:39:51,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:51,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:51,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:51,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:51,902 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2022-11-25 17:39:54,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:39:54,767 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2022-11-25 17:39:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:54,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 151 [2022-11-25 17:39:54,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:39:54,782 INFO L225 Difference]: With dead ends: 6709 [2022-11-25 17:39:54,782 INFO L226 Difference]: Without dead ends: 3995 [2022-11-25 17:39:54,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:54,786 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:39:54,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 17:39:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-11-25 17:39:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2022-11-25 17:39:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 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) [2022-11-25 17:39:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2022-11-25 17:39:54,859 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 151 [2022-11-25 17:39:54,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:39:54,861 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2022-11-25 17:39:54,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2022-11-25 17:39:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2022-11-25 17:39:54,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-25 17:39:54,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:39:54,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:54,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:39:54,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:39:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1757277791, now seen corresponding path program 1 times [2022-11-25 17:39:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:54,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969433837] [2022-11-25 17:39:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:55,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969433837] [2022-11-25 17:39:55,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969433837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:55,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:55,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:39:55,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757987059] [2022-11-25 17:39:55,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:55,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:39:55,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:55,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:39:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:39:55,344 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2022-11-25 17:39:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:39:58,964 INFO L93 Difference]: Finished difference Result 8019 states and 10522 transitions. [2022-11-25 17:39:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:39:58,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 188 [2022-11-25 17:39:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:39:58,985 INFO L225 Difference]: With dead ends: 8019 [2022-11-25 17:39:58,985 INFO L226 Difference]: Without dead ends: 4879 [2022-11-25 17:39:58,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:39:58,990 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1095 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:39:58,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 881 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-25 17:39:58,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2022-11-25 17:39:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4852. [2022-11-25 17:39:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 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) [2022-11-25 17:39:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2022-11-25 17:39:59,090 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 188 [2022-11-25 17:39:59,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:39:59,091 INFO L495 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2022-11-25 17:39:59,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2022-11-25 17:39:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2022-11-25 17:39:59,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-25 17:39:59,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:39:59,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:59,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:39:59,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:39:59,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:59,096 INFO L85 PathProgramCache]: Analyzing trace with hash -260014896, now seen corresponding path program 1 times [2022-11-25 17:39:59,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:59,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555067105] [2022-11-25 17:39:59,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:59,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 17:39:59,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:59,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555067105] [2022-11-25 17:39:59,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555067105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:59,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:59,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:39:59,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328318870] [2022-11-25 17:39:59,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:59,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:59,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:59,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:59,325 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-11-25 17:40:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:02,257 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2022-11-25 17:40:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:02,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 194 [2022-11-25 17:40:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:02,277 INFO L225 Difference]: With dead ends: 12249 [2022-11-25 17:40:02,277 INFO L226 Difference]: Without dead ends: 7399 [2022-11-25 17:40:02,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:02,284 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 408 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:02,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 17:40:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2022-11-25 17:40:02,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2022-11-25 17:40:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 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) [2022-11-25 17:40:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2022-11-25 17:40:02,405 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 194 [2022-11-25 17:40:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:02,406 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2022-11-25 17:40:02,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-11-25 17:40:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2022-11-25 17:40:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-25 17:40:02,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:02,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:40:02,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:40:02,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:02,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:02,411 INFO L85 PathProgramCache]: Analyzing trace with hash -546786268, now seen corresponding path program 1 times [2022-11-25 17:40:02,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:02,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350554167] [2022-11-25 17:40:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:02,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:40:02,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:02,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350554167] [2022-11-25 17:40:02,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350554167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:02,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:02,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219800354] [2022-11-25 17:40:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:02,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:02,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:02,842 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-25 17:40:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:06,122 INFO L93 Difference]: Finished difference Result 13930 states and 17666 transitions. [2022-11-25 17:40:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:06,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 207 [2022-11-25 17:40:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:06,147 INFO L225 Difference]: With dead ends: 13930 [2022-11-25 17:40:06,148 INFO L226 Difference]: Without dead ends: 7828 [2022-11-25 17:40:06,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:06,155 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 418 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:06,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 953 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-25 17:40:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2022-11-25 17:40:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 7822. [2022-11-25 17:40:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7822 states, 7821 states have (on average 1.1792609640710907) internal successors, (9223), 7821 states have internal predecessors, (9223), 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) [2022-11-25 17:40:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 9223 transitions. [2022-11-25 17:40:06,324 INFO L78 Accepts]: Start accepts. Automaton has 7822 states and 9223 transitions. Word has length 207 [2022-11-25 17:40:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:06,325 INFO L495 AbstractCegarLoop]: Abstraction has 7822 states and 9223 transitions. [2022-11-25 17:40:06,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-25 17:40:06,326 INFO L276 IsEmpty]: Start isEmpty. Operand 7822 states and 9223 transitions. [2022-11-25 17:40:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-25 17:40:06,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:06,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:40:06,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:40:06,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:06,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash -304170090, now seen corresponding path program 1 times [2022-11-25 17:40:06,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:06,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888482806] [2022-11-25 17:40:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 75 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:40:06,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:06,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888482806] [2022-11-25 17:40:06,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888482806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:40:06,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674209256] [2022-11-25 17:40:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:06,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:40:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:40:06,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:40:06,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:40:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:07,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:40:07,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:40:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 75 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:40:07,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:40:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:40:08,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674209256] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:40:08,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:40:08,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2022-11-25 17:40:08,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517194548] [2022-11-25 17:40:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:08,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:40:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:08,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:40:08,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:40:08,350 INFO L87 Difference]: Start difference. First operand 7822 states and 9223 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 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) [2022-11-25 17:40:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:13,895 INFO L93 Difference]: Finished difference Result 26748 states and 31821 transitions. [2022-11-25 17:40:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:40:13,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 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 260 [2022-11-25 17:40:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:13,942 INFO L225 Difference]: With dead ends: 26748 [2022-11-25 17:40:13,942 INFO L226 Difference]: Without dead ends: 18497 [2022-11-25 17:40:13,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:40:13,954 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1007 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 1151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1151 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:13,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 147 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1151 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-25 17:40:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18497 states. [2022-11-25 17:40:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18497 to 18495. [2022-11-25 17:40:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18495 states, 18494 states have (on average 1.161187412133665) internal successors, (21475), 18494 states have internal predecessors, (21475), 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) [2022-11-25 17:40:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18495 states to 18495 states and 21475 transitions. [2022-11-25 17:40:14,390 INFO L78 Accepts]: Start accepts. Automaton has 18495 states and 21475 transitions. Word has length 260 [2022-11-25 17:40:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:14,391 INFO L495 AbstractCegarLoop]: Abstraction has 18495 states and 21475 transitions. [2022-11-25 17:40:14,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 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) [2022-11-25 17:40:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 18495 states and 21475 transitions. [2022-11-25 17:40:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-25 17:40:14,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:14,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:40:14,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:40:14,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:40:14,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:14,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash 701515888, now seen corresponding path program 1 times [2022-11-25 17:40:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:14,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846231849] [2022-11-25 17:40:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-25 17:40:14,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:14,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846231849] [2022-11-25 17:40:14,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846231849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:14,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:14,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:14,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699761631] [2022-11-25 17:40:14,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:14,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:14,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:14,905 INFO L87 Difference]: Start difference. First operand 18495 states and 21475 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2022-11-25 17:40:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:18,090 INFO L93 Difference]: Finished difference Result 40390 states and 46980 transitions. [2022-11-25 17:40:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:18,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 277 [2022-11-25 17:40:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:18,150 INFO L225 Difference]: With dead ends: 40390 [2022-11-25 17:40:18,150 INFO L226 Difference]: Without dead ends: 21471 [2022-11-25 17:40:18,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:18,168 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:18,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 844 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 17:40:18,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21471 states. [2022-11-25 17:40:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21471 to 21471. [2022-11-25 17:40:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21471 states, 21470 states have (on average 1.1432231020027945) internal successors, (24545), 21470 states have internal predecessors, (24545), 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) [2022-11-25 17:40:18,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21471 states to 21471 states and 24545 transitions. [2022-11-25 17:40:18,609 INFO L78 Accepts]: Start accepts. Automaton has 21471 states and 24545 transitions. Word has length 277 [2022-11-25 17:40:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:18,610 INFO L495 AbstractCegarLoop]: Abstraction has 21471 states and 24545 transitions. [2022-11-25 17:40:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2022-11-25 17:40:18,611 INFO L276 IsEmpty]: Start isEmpty. Operand 21471 states and 24545 transitions. [2022-11-25 17:40:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-25 17:40:18,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:18,619 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 17:40:18,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:40:18,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:18,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1295125674, now seen corresponding path program 1 times [2022-11-25 17:40:18,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:18,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153192877] [2022-11-25 17:40:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-25 17:40:19,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:19,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153192877] [2022-11-25 17:40:19,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153192877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:19,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:19,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:19,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114277093] [2022-11-25 17:40:19,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:19,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:19,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:19,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:19,052 INFO L87 Difference]: Start difference. First operand 21471 states and 24545 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2022-11-25 17:40:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:22,794 INFO L93 Difference]: Finished difference Result 52349 states and 59968 transitions. [2022-11-25 17:40:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:22,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 312 [2022-11-25 17:40:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:22,855 INFO L225 Difference]: With dead ends: 52349 [2022-11-25 17:40:22,855 INFO L226 Difference]: Without dead ends: 30452 [2022-11-25 17:40:22,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:22,878 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 460 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:22,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 327 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-25 17:40:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30452 states. [2022-11-25 17:40:23,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30452 to 21468. [2022-11-25 17:40:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21468 states, 21467 states have (on average 1.1420785391531187) internal successors, (24517), 21467 states have internal predecessors, (24517), 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) [2022-11-25 17:40:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21468 states to 21468 states and 24517 transitions. [2022-11-25 17:40:23,303 INFO L78 Accepts]: Start accepts. Automaton has 21468 states and 24517 transitions. Word has length 312 [2022-11-25 17:40:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:23,304 INFO L495 AbstractCegarLoop]: Abstraction has 21468 states and 24517 transitions. [2022-11-25 17:40:23,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2022-11-25 17:40:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 21468 states and 24517 transitions. [2022-11-25 17:40:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-25 17:40:23,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:23,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 17:40:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:40:23,316 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1545961588, now seen corresponding path program 1 times [2022-11-25 17:40:23,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801635726] [2022-11-25 17:40:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:23,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-25 17:40:23,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801635726] [2022-11-25 17:40:23,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801635726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:23,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:23,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825419302] [2022-11-25 17:40:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:23,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:23,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:23,854 INFO L87 Difference]: Start difference. First operand 21468 states and 24517 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2022-11-25 17:40:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:27,502 INFO L93 Difference]: Finished difference Result 51042 states and 58361 transitions. [2022-11-25 17:40:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:27,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 334 [2022-11-25 17:40:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:27,561 INFO L225 Difference]: With dead ends: 51042 [2022-11-25 17:40:27,561 INFO L226 Difference]: Without dead ends: 29576 [2022-11-25 17:40:27,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:27,582 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 326 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:27,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 843 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 17:40:27,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29576 states. [2022-11-25 17:40:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29576 to 27853. [2022-11-25 17:40:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27853 states, 27852 states have (on average 1.128823782852219) internal successors, (31440), 27852 states have internal predecessors, (31440), 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) [2022-11-25 17:40:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27853 states to 27853 states and 31440 transitions. [2022-11-25 17:40:28,184 INFO L78 Accepts]: Start accepts. Automaton has 27853 states and 31440 transitions. Word has length 334 [2022-11-25 17:40:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:28,184 INFO L495 AbstractCegarLoop]: Abstraction has 27853 states and 31440 transitions. [2022-11-25 17:40:28,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2022-11-25 17:40:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 27853 states and 31440 transitions. [2022-11-25 17:40:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-25 17:40:28,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:28,195 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:40:28,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:40:28,196 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1618781094, now seen corresponding path program 1 times [2022-11-25 17:40:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:28,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519711044] [2022-11-25 17:40:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:28,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 355 proven. 73 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-25 17:40:28,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:28,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519711044] [2022-11-25 17:40:28,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519711044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:40:28,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333664076] [2022-11-25 17:40:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:28,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:40:28,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:40:28,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:40:28,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:40:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:28,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:40:29,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:40:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 355 proven. 73 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-25 17:40:29,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:40:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-25 17:40:30,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333664076] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:40:30,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:40:30,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-25 17:40:30,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938132510] [2022-11-25 17:40:30,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:30,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:40:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:30,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:40:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:40:30,235 INFO L87 Difference]: Start difference. First operand 27853 states and 31440 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-11-25 17:40:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:35,727 INFO L93 Difference]: Finished difference Result 68931 states and 77945 transitions. [2022-11-25 17:40:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:40:35,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 338 [2022-11-25 17:40:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:35,791 INFO L225 Difference]: With dead ends: 68931 [2022-11-25 17:40:35,792 INFO L226 Difference]: Without dead ends: 40653 [2022-11-25 17:40:35,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 671 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:40:35,819 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 900 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:35,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 189 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-25 17:40:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40653 states. [2022-11-25 17:40:36,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40653 to 38524. [2022-11-25 17:40:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38524 states, 38523 states have (on average 1.1351400462061625) internal successors, (43729), 38523 states have internal predecessors, (43729), 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) [2022-11-25 17:40:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38524 states to 38524 states and 43729 transitions. [2022-11-25 17:40:36,598 INFO L78 Accepts]: Start accepts. Automaton has 38524 states and 43729 transitions. Word has length 338 [2022-11-25 17:40:36,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:36,599 INFO L495 AbstractCegarLoop]: Abstraction has 38524 states and 43729 transitions. [2022-11-25 17:40:36,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-11-25 17:40:36,600 INFO L276 IsEmpty]: Start isEmpty. Operand 38524 states and 43729 transitions. [2022-11-25 17:40:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-25 17:40:36,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:36,606 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:40:36,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:40:36,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee60e694-75b6-4197-b30b-1ca250e65854/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:40:36,814 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:36,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 977737213, now seen corresponding path program 1 times [2022-11-25 17:40:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:36,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623662306] [2022-11-25 17:40:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-25 17:40:37,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:37,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623662306] [2022-11-25 17:40:37,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623662306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:37,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:37,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:37,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136001373] [2022-11-25 17:40:37,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:37,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:37,204 INFO L87 Difference]: Start difference. First operand 38524 states and 43729 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-11-25 17:40:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:40,206 INFO L93 Difference]: Finished difference Result 82167 states and 93323 transitions. [2022-11-25 17:40:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:40,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 352 [2022-11-25 17:40:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:40,252 INFO L225 Difference]: With dead ends: 82167 [2022-11-25 17:40:40,252 INFO L226 Difference]: Without dead ends: 43214 [2022-11-25 17:40:40,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:40,274 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 436 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:40,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 835 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 17:40:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43214 states. [2022-11-25 17:40:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43214 to 41082. [2022-11-25 17:40:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41082 states, 41081 states have (on average 1.1328107884423455) internal successors, (46537), 41081 states have internal predecessors, (46537), 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) [2022-11-25 17:40:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41082 states to 41082 states and 46537 transitions. [2022-11-25 17:40:41,023 INFO L78 Accepts]: Start accepts. Automaton has 41082 states and 46537 transitions. Word has length 352 [2022-11-25 17:40:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:41,024 INFO L495 AbstractCegarLoop]: Abstraction has 41082 states and 46537 transitions. [2022-11-25 17:40:41,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-11-25 17:40:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 41082 states and 46537 transitions. [2022-11-25 17:40:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-25 17:40:41,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:41,031 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:40:41,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:40:41,032 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1634611038, now seen corresponding path program 1 times [2022-11-25 17:40:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:41,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669738027] [2022-11-25 17:40:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-25 17:40:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:41,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669738027] [2022-11-25 17:40:41,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669738027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:41,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:41,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:41,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738117351] [2022-11-25 17:40:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:41,663 INFO L87 Difference]: Start difference. First operand 41082 states and 46537 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2022-11-25 17:40:44,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:44,332 INFO L93 Difference]: Finished difference Result 86418 states and 98040 transitions. [2022-11-25 17:40:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:44,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 383 [2022-11-25 17:40:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:44,390 INFO L225 Difference]: With dead ends: 86418 [2022-11-25 17:40:44,390 INFO L226 Difference]: Without dead ends: 44913 [2022-11-25 17:40:44,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:44,414 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 401 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:44,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 880 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 17:40:44,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44913 states. [2022-11-25 17:40:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44913 to 44911. [2022-11-25 17:40:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44911 states, 44910 states have (on average 1.1258517034068136) internal successors, (50562), 44910 states have internal predecessors, (50562), 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) [2022-11-25 17:40:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44911 states to 44911 states and 50562 transitions. [2022-11-25 17:40:45,201 INFO L78 Accepts]: Start accepts. Automaton has 44911 states and 50562 transitions. Word has length 383 [2022-11-25 17:40:45,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:45,201 INFO L495 AbstractCegarLoop]: Abstraction has 44911 states and 50562 transitions. [2022-11-25 17:40:45,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2022-11-25 17:40:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 44911 states and 50562 transitions. [2022-11-25 17:40:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-25 17:40:45,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:45,210 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:40:45,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:40:45,211 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:45,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2065719755, now seen corresponding path program 1 times [2022-11-25 17:40:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:45,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908859481] [2022-11-25 17:40:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:45,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-25 17:40:45,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:45,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908859481] [2022-11-25 17:40:45,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908859481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:45,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:45,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487291000] [2022-11-25 17:40:45,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:45,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:45,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:45,860 INFO L87 Difference]: Start difference. First operand 44911 states and 50562 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-11-25 17:40:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:49,111 INFO L93 Difference]: Finished difference Result 100497 states and 112916 transitions. [2022-11-25 17:40:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:49,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 422 [2022-11-25 17:40:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:49,170 INFO L225 Difference]: With dead ends: 100497 [2022-11-25 17:40:49,170 INFO L226 Difference]: Without dead ends: 55159 [2022-11-25 17:40:49,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:49,199 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 488 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:49,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 194 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 17:40:49,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55159 states. [2022-11-25 17:40:49,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55159 to 53853. [2022-11-25 17:40:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53853 states, 53852 states have (on average 1.121741068112605) internal successors, (60408), 53852 states have internal predecessors, (60408), 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) [2022-11-25 17:40:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53853 states to 53853 states and 60408 transitions. [2022-11-25 17:40:49,999 INFO L78 Accepts]: Start accepts. Automaton has 53853 states and 60408 transitions. Word has length 422 [2022-11-25 17:40:49,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:49,999 INFO L495 AbstractCegarLoop]: Abstraction has 53853 states and 60408 transitions. [2022-11-25 17:40:50,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-11-25 17:40:50,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53853 states and 60408 transitions. [2022-11-25 17:40:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-25 17:40:50,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:50,009 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-25 17:40:50,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:40:50,010 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:50,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1496360823, now seen corresponding path program 1 times [2022-11-25 17:40:50,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:50,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510150359] [2022-11-25 17:40:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-25 17:40:50,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:50,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510150359] [2022-11-25 17:40:50,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510150359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:50,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:50,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:50,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449198499] [2022-11-25 17:40:50,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:50,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:50,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:50,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:50,815 INFO L87 Difference]: Start difference. First operand 53853 states and 60408 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2022-11-25 17:40:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:54,283 INFO L93 Difference]: Finished difference Result 125158 states and 140434 transitions. [2022-11-25 17:40:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:54,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 440 [2022-11-25 17:40:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:54,365 INFO L225 Difference]: With dead ends: 125158 [2022-11-25 17:40:54,365 INFO L226 Difference]: Without dead ends: 67464 [2022-11-25 17:40:54,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:54,390 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 446 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:54,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 657 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 17:40:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67464 states. [2022-11-25 17:40:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67464 to 62342. [2022-11-25 17:40:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62342 states, 62341 states have (on average 1.1151088368810254) internal successors, (69517), 62341 states have internal predecessors, (69517), 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) [2022-11-25 17:40:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62342 states to 62342 states and 69517 transitions. [2022-11-25 17:40:55,599 INFO L78 Accepts]: Start accepts. Automaton has 62342 states and 69517 transitions. Word has length 440 [2022-11-25 17:40:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:40:55,600 INFO L495 AbstractCegarLoop]: Abstraction has 62342 states and 69517 transitions. [2022-11-25 17:40:55,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2022-11-25 17:40:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 62342 states and 69517 transitions. [2022-11-25 17:40:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-25 17:40:55,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:40:55,619 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-25 17:40:55,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:40:55,620 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:40:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash -788361170, now seen corresponding path program 1 times [2022-11-25 17:40:55,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:40:55,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108670920] [2022-11-25 17:40:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:55,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:40:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2022-11-25 17:40:56,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:40:56,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108670920] [2022-11-25 17:40:56,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108670920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:40:56,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:40:56,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:40:56,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319857415] [2022-11-25 17:40:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:40:56,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:40:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:40:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:40:56,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:56,482 INFO L87 Difference]: Start difference. First operand 62342 states and 69517 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2022-11-25 17:40:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:40:59,778 INFO L93 Difference]: Finished difference Result 130194 states and 145275 transitions. [2022-11-25 17:40:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:40:59,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 444 [2022-11-25 17:40:59,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:40:59,856 INFO L225 Difference]: With dead ends: 130194 [2022-11-25 17:40:59,856 INFO L226 Difference]: Without dead ends: 67423 [2022-11-25 17:40:59,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:40:59,882 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 440 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:40:59,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 711 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 17:40:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67423 states. [2022-11-25 17:41:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67423 to 60615. [2022-11-25 17:41:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60615 states, 60614 states have (on average 1.1074669218332398) internal successors, (67128), 60614 states have internal predecessors, (67128), 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) [2022-11-25 17:41:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60615 states to 60615 states and 67128 transitions. [2022-11-25 17:41:01,358 INFO L78 Accepts]: Start accepts. Automaton has 60615 states and 67128 transitions. Word has length 444 [2022-11-25 17:41:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:01,359 INFO L495 AbstractCegarLoop]: Abstraction has 60615 states and 67128 transitions. [2022-11-25 17:41:01,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2022-11-25 17:41:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 60615 states and 67128 transitions. [2022-11-25 17:41:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-11-25 17:41:01,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:01,371 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:41:01,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:41:01,372 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:01,373 INFO L85 PathProgramCache]: Analyzing trace with hash 642720953, now seen corresponding path program 1 times [2022-11-25 17:41:01,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:01,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182163812] [2022-11-25 17:41:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:01,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-25 17:41:01,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:01,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182163812] [2022-11-25 17:41:01,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182163812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:01,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:01,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392292845] [2022-11-25 17:41:01,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:01,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:41:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:41:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:01,856 INFO L87 Difference]: Start difference. First operand 60615 states and 67128 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2022-11-25 17:41:05,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:05,047 INFO L93 Difference]: Finished difference Result 131454 states and 145577 transitions. [2022-11-25 17:41:05,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:41:05,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 475 [2022-11-25 17:41:05,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:05,130 INFO L225 Difference]: With dead ends: 131454 [2022-11-25 17:41:05,130 INFO L226 Difference]: Without dead ends: 70409 [2022-11-25 17:41:05,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:05,161 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 475 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:05,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 120 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 17:41:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70409 states. [2022-11-25 17:41:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70409 to 58886. [2022-11-25 17:41:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58886 states, 58885 states have (on average 1.1044408593020294) internal successors, (65035), 58885 states have internal predecessors, (65035), 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) [2022-11-25 17:41:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58886 states to 58886 states and 65035 transitions. [2022-11-25 17:41:06,317 INFO L78 Accepts]: Start accepts. Automaton has 58886 states and 65035 transitions. Word has length 475 [2022-11-25 17:41:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:06,317 INFO L495 AbstractCegarLoop]: Abstraction has 58886 states and 65035 transitions. [2022-11-25 17:41:06,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2022-11-25 17:41:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 58886 states and 65035 transitions. [2022-11-25 17:41:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-25 17:41:06,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:06,329 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:41:06,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:41:06,330 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash -892559919, now seen corresponding path program 1 times [2022-11-25 17:41:06,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:06,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586183819] [2022-11-25 17:41:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-25 17:41:07,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:07,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586183819] [2022-11-25 17:41:07,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586183819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:07,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:07,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:07,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468787253] [2022-11-25 17:41:07,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:07,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:41:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:41:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:07,105 INFO L87 Difference]: Start difference. First operand 58886 states and 65035 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-11-25 17:41:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:09,951 INFO L93 Difference]: Finished difference Result 127985 states and 141202 transitions. [2022-11-25 17:41:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:41:09,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 483 [2022-11-25 17:41:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:10,024 INFO L225 Difference]: With dead ends: 127985 [2022-11-25 17:41:10,025 INFO L226 Difference]: Without dead ends: 68676 [2022-11-25 17:41:10,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:10,053 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 267 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:10,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 744 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 17:41:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68676 states. [2022-11-25 17:41:10,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68676 to 57575. [2022-11-25 17:41:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57575 states, 57574 states have (on average 1.1018167923020807) internal successors, (63436), 57574 states have internal predecessors, (63436), 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) [2022-11-25 17:41:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57575 states to 57575 states and 63436 transitions. [2022-11-25 17:41:11,206 INFO L78 Accepts]: Start accepts. Automaton has 57575 states and 63436 transitions. Word has length 483 [2022-11-25 17:41:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:11,207 INFO L495 AbstractCegarLoop]: Abstraction has 57575 states and 63436 transitions. [2022-11-25 17:41:11,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-11-25 17:41:11,207 INFO L276 IsEmpty]: Start isEmpty. Operand 57575 states and 63436 transitions. [2022-11-25 17:41:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-11-25 17:41:11,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:11,219 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:41:11,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:41:11,220 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:11,221 INFO L85 PathProgramCache]: Analyzing trace with hash 396274606, now seen corresponding path program 1 times [2022-11-25 17:41:11,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:11,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984786305] [2022-11-25 17:41:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:11,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-25 17:41:11,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:11,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984786305] [2022-11-25 17:41:11,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984786305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:11,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:11,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:11,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066456278] [2022-11-25 17:41:11,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:11,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:41:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:41:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:11,561 INFO L87 Difference]: Start difference. First operand 57575 states and 63436 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2022-11-25 17:41:14,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:14,538 INFO L93 Difference]: Finished difference Result 123654 states and 136226 transitions. [2022-11-25 17:41:14,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:41:14,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 560 [2022-11-25 17:41:14,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:14,632 INFO L225 Difference]: With dead ends: 123654 [2022-11-25 17:41:14,632 INFO L226 Difference]: Without dead ends: 65656 [2022-11-25 17:41:14,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:14,671 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 475 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:14,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 681 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 17:41:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65656 states. [2022-11-25 17:41:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65656 to 65650. [2022-11-25 17:41:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65650 states, 65649 states have (on average 1.0945178144373866) internal successors, (71854), 65649 states have internal predecessors, (71854), 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) [2022-11-25 17:41:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65650 states to 65650 states and 71854 transitions. [2022-11-25 17:41:16,067 INFO L78 Accepts]: Start accepts. Automaton has 65650 states and 71854 transitions. Word has length 560 [2022-11-25 17:41:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:16,067 INFO L495 AbstractCegarLoop]: Abstraction has 65650 states and 71854 transitions. [2022-11-25 17:41:16,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2022-11-25 17:41:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 65650 states and 71854 transitions. [2022-11-25 17:41:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2022-11-25 17:41:16,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:16,096 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:41:16,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 17:41:16,097 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:16,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:16,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1364765501, now seen corresponding path program 1 times [2022-11-25 17:41:16,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:16,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251391774] [2022-11-25 17:41:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:16,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-25 17:41:16,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:16,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251391774] [2022-11-25 17:41:16,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251391774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:16,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:16,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:16,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711254126] [2022-11-25 17:41:16,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:16,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:41:16,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:41:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:16,622 INFO L87 Difference]: Start difference. First operand 65650 states and 71854 transitions. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2022-11-25 17:41:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:19,652 INFO L93 Difference]: Finished difference Result 139375 states and 152646 transitions. [2022-11-25 17:41:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:41:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 697 [2022-11-25 17:41:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:19,731 INFO L225 Difference]: With dead ends: 139375 [2022-11-25 17:41:19,731 INFO L226 Difference]: Without dead ends: 73302 [2022-11-25 17:41:19,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:19,763 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 439 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:19,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 330 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 17:41:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73302 states. [2022-11-25 17:41:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73302 to 68195. [2022-11-25 17:41:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68195 states, 68194 states have (on average 1.0906238085462063) internal successors, (74374), 68194 states have internal predecessors, (74374), 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) [2022-11-25 17:41:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68195 states to 68195 states and 74374 transitions. [2022-11-25 17:41:20,953 INFO L78 Accepts]: Start accepts. Automaton has 68195 states and 74374 transitions. Word has length 697 [2022-11-25 17:41:20,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:20,954 INFO L495 AbstractCegarLoop]: Abstraction has 68195 states and 74374 transitions. [2022-11-25 17:41:20,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2022-11-25 17:41:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 68195 states and 74374 transitions. [2022-11-25 17:41:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2022-11-25 17:41:21,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:21,344 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:41:21,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 17:41:21,345 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:21,346 INFO L85 PathProgramCache]: Analyzing trace with hash -309735421, now seen corresponding path program 1 times [2022-11-25 17:41:21,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:21,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530405738] [2022-11-25 17:41:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:21,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 1014 trivial. 0 not checked. [2022-11-25 17:41:22,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:22,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530405738] [2022-11-25 17:41:22,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530405738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:22,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:22,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:22,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916799013] [2022-11-25 17:41:22,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:22,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:41:22,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:41:22,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:22,219 INFO L87 Difference]: Start difference. First operand 68195 states and 74374 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2022-11-25 17:41:25,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:25,852 INFO L93 Difference]: Finished difference Result 140640 states and 153541 transitions. [2022-11-25 17:41:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:41:25,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 805 [2022-11-25 17:41:25,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:25,930 INFO L225 Difference]: With dead ends: 140640 [2022-11-25 17:41:25,930 INFO L226 Difference]: Without dead ends: 72447 [2022-11-25 17:41:25,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:25,956 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 453 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:25,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 714 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 17:41:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72447 states. [2022-11-25 17:41:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72447 to 65637. [2022-11-25 17:41:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65637 states, 65636 states have (on average 1.078874398196112) internal successors, (70813), 65636 states have internal predecessors, (70813), 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) [2022-11-25 17:41:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65637 states to 65637 states and 70813 transitions. [2022-11-25 17:41:27,099 INFO L78 Accepts]: Start accepts. Automaton has 65637 states and 70813 transitions. Word has length 805 [2022-11-25 17:41:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:27,100 INFO L495 AbstractCegarLoop]: Abstraction has 65637 states and 70813 transitions. [2022-11-25 17:41:27,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2022-11-25 17:41:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 65637 states and 70813 transitions. [2022-11-25 17:41:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2022-11-25 17:41:27,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:27,152 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:41:27,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 17:41:27,152 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash 545736305, now seen corresponding path program 1 times [2022-11-25 17:41:27,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:27,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312092991] [2022-11-25 17:41:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2022-11-25 17:41:27,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:27,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312092991] [2022-11-25 17:41:27,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312092991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:27,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:27,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:41:27,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257842932] [2022-11-25 17:41:27,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:27,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:41:27,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:27,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:41:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:27,995 INFO L87 Difference]: Start difference. First operand 65637 states and 70813 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 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) [2022-11-25 17:41:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:30,102 INFO L93 Difference]: Finished difference Result 126145 states and 136027 transitions. [2022-11-25 17:41:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:41:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 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 838 [2022-11-25 17:41:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:30,198 INFO L225 Difference]: With dead ends: 126145 [2022-11-25 17:41:30,198 INFO L226 Difference]: Without dead ends: 60510 [2022-11-25 17:41:30,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:30,230 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 358 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:30,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 70 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 17:41:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60510 states. [2022-11-25 17:41:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60510 to 60508. [2022-11-25 17:41:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60508 states, 60507 states have (on average 1.0776108549424033) internal successors, (65203), 60507 states have internal predecessors, (65203), 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) [2022-11-25 17:41:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60508 states to 60508 states and 65203 transitions. [2022-11-25 17:41:31,493 INFO L78 Accepts]: Start accepts. Automaton has 60508 states and 65203 transitions. Word has length 838 [2022-11-25 17:41:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:31,494 INFO L495 AbstractCegarLoop]: Abstraction has 60508 states and 65203 transitions. [2022-11-25 17:41:31,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 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) [2022-11-25 17:41:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 60508 states and 65203 transitions. [2022-11-25 17:41:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1434 [2022-11-25 17:41:31,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:31,623 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:41:31,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 17:41:31,624 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1461884006, now seen corresponding path program 1 times [2022-11-25 17:41:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:31,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039165000] [2022-11-25 17:41:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:31,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2526 backedges. 1840 proven. 0 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2022-11-25 17:41:33,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:33,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039165000] [2022-11-25 17:41:33,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039165000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:33,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:33,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564180030] [2022-11-25 17:41:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:33,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:41:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:41:33,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:33,238 INFO L87 Difference]: Start difference. First operand 60508 states and 65203 transitions. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2022-11-25 17:41:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:35,491 INFO L93 Difference]: Finished difference Result 119736 states and 128970 transitions. [2022-11-25 17:41:35,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:41:35,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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 1433 [2022-11-25 17:41:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:35,550 INFO L225 Difference]: With dead ends: 119736 [2022-11-25 17:41:35,550 INFO L226 Difference]: Without dead ends: 59230 [2022-11-25 17:41:35,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:35,579 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 109 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:35,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 650 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 17:41:35,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59230 states. [2022-11-25 17:41:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59230 to 58378. [2022-11-25 17:41:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58378 states, 58377 states have (on average 1.0646316186169211) internal successors, (62150), 58377 states have internal predecessors, (62150), 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) [2022-11-25 17:41:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58378 states to 58378 states and 62150 transitions. [2022-11-25 17:41:36,500 INFO L78 Accepts]: Start accepts. Automaton has 58378 states and 62150 transitions. Word has length 1433 [2022-11-25 17:41:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:36,501 INFO L495 AbstractCegarLoop]: Abstraction has 58378 states and 62150 transitions. [2022-11-25 17:41:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2022-11-25 17:41:36,501 INFO L276 IsEmpty]: Start isEmpty. Operand 58378 states and 62150 transitions. [2022-11-25 17:41:36,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2022-11-25 17:41:36,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:36,561 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:41:36,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 17:41:36,561 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:36,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:36,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1577584933, now seen corresponding path program 1 times [2022-11-25 17:41:36,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:36,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389186594] [2022-11-25 17:41:36,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:36,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 2077 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2022-11-25 17:41:38,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:38,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389186594] [2022-11-25 17:41:38,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389186594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:38,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:38,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:38,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852188076] [2022-11-25 17:41:38,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:38,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:41:38,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:41:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:38,536 INFO L87 Difference]: Start difference. First operand 58378 states and 62150 transitions. Second operand has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 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) [2022-11-25 17:41:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:41,417 INFO L93 Difference]: Finished difference Result 120171 states and 127888 transitions. [2022-11-25 17:41:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:41:41,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 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 1501 [2022-11-25 17:41:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:41,484 INFO L225 Difference]: With dead ends: 120171 [2022-11-25 17:41:41,484 INFO L226 Difference]: Without dead ends: 61795 [2022-11-25 17:41:41,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:41:41,514 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 89 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:41,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 681 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 17:41:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61795 states. [2022-11-25 17:41:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61795 to 60506. [2022-11-25 17:41:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60506 states, 60505 states have (on average 1.063217915874721) internal successors, (64330), 60505 states have internal predecessors, (64330), 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) [2022-11-25 17:41:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60506 states to 60506 states and 64330 transitions. [2022-11-25 17:41:42,497 INFO L78 Accepts]: Start accepts. Automaton has 60506 states and 64330 transitions. Word has length 1501 [2022-11-25 17:41:42,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:42,498 INFO L495 AbstractCegarLoop]: Abstraction has 60506 states and 64330 transitions. [2022-11-25 17:41:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 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) [2022-11-25 17:41:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 60506 states and 64330 transitions. [2022-11-25 17:41:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1553 [2022-11-25 17:41:42,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:42,568 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:41:42,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 17:41:42,568 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash -37717548, now seen corresponding path program 1 times [2022-11-25 17:41:42,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:42,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058281412] [2022-11-25 17:41:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:42,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2898 backedges. 1361 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2022-11-25 17:41:45,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:45,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058281412] [2022-11-25 17:41:45,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058281412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:45,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:45,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:41:45,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880334116] [2022-11-25 17:41:45,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:45,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:41:45,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:45,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:41:45,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:41:45,097 INFO L87 Difference]: Start difference. First operand 60506 states and 64330 transitions. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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) [2022-11-25 17:41:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:49,988 INFO L93 Difference]: Finished difference Result 139746 states and 148086 transitions. [2022-11-25 17:41:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:41:49,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 1552 [2022-11-25 17:41:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:49,991 INFO L225 Difference]: With dead ends: 139746 [2022-11-25 17:41:49,991 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 17:41:50,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:41:50,030 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 566 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:50,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 97 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 17:41:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 17:41:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 17:41:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-25 17:41:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 17:41:50,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1552 [2022-11-25 17:41:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:50,033 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:41:50,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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) [2022-11-25 17:41:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 17:41:50,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 17:41:50,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 17:41:50,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 17:41:50,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 17:41:57,730 WARN L233 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 716 DAG size of output: 682 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)