./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem04_label50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem04_label50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a --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 7b880c2010be43dfeeb7dd7592f429a2541be540814280cdb1278a5256b26750 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:23:19,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:23:19,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:23:19,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:23:19,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:23:19,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:23:19,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:23:19,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:23:19,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:23:19,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:23:19,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:23:19,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:23:19,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:23:19,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:23:19,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:23:19,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:23:19,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:23:19,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:23:19,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:23:19,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:23:19,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:23:19,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:23:19,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:23:19,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:23:19,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:23:19,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:23:19,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:23:19,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:23:19,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:23:19,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:23:19,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:23:19,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:23:19,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:23:19,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:23:19,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:23:19,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:23:19,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:23:19,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:23:19,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:23:19,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:23:19,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:23:19,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:23:19,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:23:19,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:23:19,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:23:19,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:23:19,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:23:19,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:23:19,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:23:19,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:23:19,425 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:23:19,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:23:19,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:23:19,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:23:19,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:23:19,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:23:19,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:23:19,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:23:19,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:23:19,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:23:19,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:23:19,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:23:19,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:23:19,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:23:19,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:23:19,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:23:19,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:19,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:23:19,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:23:19,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:23:19,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:23:19,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:23:19,430 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:23:19,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:23:19,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:23:19,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b880c2010be43dfeeb7dd7592f429a2541be540814280cdb1278a5256b26750 [2022-11-21 17:23:19,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:23:19,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:23:19,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:23:19,753 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:23:19,753 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:23:19,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem04_label50.c [2022-11-21 17:23:22,806 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:23:23,438 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:23:23,439 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/sv-benchmarks/c/eca-rers2012/Problem04_label50.c [2022-11-21 17:23:23,479 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/data/a21a302ba/2323bd31e6ec4f74afdb8b6b11b45e39/FLAG27f1ac96e [2022-11-21 17:23:23,497 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/data/a21a302ba/2323bd31e6ec4f74afdb8b6b11b45e39 [2022-11-21 17:23:23,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:23:23,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:23:23,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:23,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:23:23,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:23:23,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:23" (1/1) ... [2022-11-21 17:23:23,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0e48c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:23, skipping insertion in model container [2022-11-21 17:23:23,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:23" (1/1) ... [2022-11-21 17:23:23,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:23:23,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:23:25,203 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_42a68268-120c-4727-a8ec-27f271928627/sv-benchmarks/c/eca-rers2012/Problem04_label50.c[184552,184565] [2022-11-21 17:23:25,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:23:25,233 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:23:25,907 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_42a68268-120c-4727-a8ec-27f271928627/sv-benchmarks/c/eca-rers2012/Problem04_label50.c[184552,184565] [2022-11-21 17:23:25,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:23:25,939 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:23:25,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25 WrapperNode [2022-11-21 17:23:25,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:25,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:23:25,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:23:25,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:23:25,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,222 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5572 [2022-11-21 17:23:26,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:23:26,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:23:26,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:23:26,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:23:26,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:23:26,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:23:26,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:23:26,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:23:26,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (1/1) ... [2022-11-21 17:23:26,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:26,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:23:26,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:23:26,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:23:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:23:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:23:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:23:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:23:26,850 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:23:26,853 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:23:32,392 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:23:32,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:23:32,415 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:23:32,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:23:32 BoogieIcfgContainer [2022-11-21 17:23:32,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:23:32,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:23:32,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:23:32,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:23:32,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:23:23" (1/3) ... [2022-11-21 17:23:32,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5477dc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:23:32, skipping insertion in model container [2022-11-21 17:23:32,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:25" (2/3) ... [2022-11-21 17:23:32,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5477dc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:23:32, skipping insertion in model container [2022-11-21 17:23:32,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:23:32" (3/3) ... [2022-11-21 17:23:32,430 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label50.c [2022-11-21 17:23:32,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:23:32,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:23:32,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:23:32,550 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;@26ff0062, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:23:32,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:23:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 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) [2022-11-21 17:23:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2022-11-21 17:23:32,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:32,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:32,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:23:32,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash -83489363, now seen corresponding path program 1 times [2022-11-21 17:23:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:32,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598348230] [2022-11-21 17:23:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:32,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:42,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:42,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598348230] [2022-11-21 17:23:42,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598348230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:42,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:42,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 17:23:42,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914429758] [2022-11-21 17:23:42,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:42,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:23:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:43,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:23:43,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:23:43,043 INFO L87 Difference]: Start difference. First operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 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 12 states, 12 states have (on average 68.0) internal successors, (816), 11 states have internal predecessors, (816), 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) [2022-11-21 17:23:51,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:51,635 INFO L93 Difference]: Finished difference Result 2490 states and 4835 transitions. [2022-11-21 17:23:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:23:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 68.0) internal successors, (816), 11 states have internal predecessors, (816), 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 816 [2022-11-21 17:23:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:51,669 INFO L225 Difference]: With dead ends: 2490 [2022-11-21 17:23:51,669 INFO L226 Difference]: Without dead ends: 1541 [2022-11-21 17:23:51,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:23:51,681 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 2108 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6526 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 7237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 6526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:51,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 964 Invalid, 7237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [711 Valid, 6526 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-21 17:23:51,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-11-21 17:23:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1541. [2022-11-21 17:23:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.490909090909091) internal successors, (2296), 1540 states have internal predecessors, (2296), 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) [2022-11-21 17:23:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2296 transitions. [2022-11-21 17:23:51,815 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2296 transitions. Word has length 816 [2022-11-21 17:23:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:51,817 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2296 transitions. [2022-11-21 17:23:51,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.0) internal successors, (816), 11 states have internal predecessors, (816), 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) [2022-11-21 17:23:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2296 transitions. [2022-11-21 17:23:51,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2022-11-21 17:23:51,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:51,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:51,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:23:51,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:23:51,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:51,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2031662834, now seen corresponding path program 1 times [2022-11-21 17:23:51,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:51,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874767038] [2022-11-21 17:23:51,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:51,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:58,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:58,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874767038] [2022-11-21 17:23:58,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874767038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:58,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:58,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:23:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496835761] [2022-11-21 17:23:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:58,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:23:58,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:58,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:23:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:23:58,271 INFO L87 Difference]: Start difference. First operand 1541 states and 2296 transitions. Second operand has 13 states, 13 states have (on average 63.92307692307692) internal successors, (831), 12 states have internal predecessors, (831), 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) [2022-11-21 17:24:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:08,473 INFO L93 Difference]: Finished difference Result 3865 states and 6804 transitions. [2022-11-21 17:24:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:24:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 63.92307692307692) internal successors, (831), 12 states have internal predecessors, (831), 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 831 [2022-11-21 17:24:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:08,486 INFO L225 Difference]: With dead ends: 3865 [2022-11-21 17:24:08,486 INFO L226 Difference]: Without dead ends: 3045 [2022-11-21 17:24:08,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:24:08,492 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 2558 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10065 mSolverCounterSat, 1410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 11475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1410 IncrementalHoareTripleChecker+Valid, 10065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 910 Invalid, 11475 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1410 Valid, 10065 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-21 17:24:08,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-11-21 17:24:08,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3045. [2022-11-21 17:24:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3044 states have (on average 1.2598554533508541) internal successors, (3835), 3044 states have internal predecessors, (3835), 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) [2022-11-21 17:24:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 3835 transitions. [2022-11-21 17:24:08,568 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 3835 transitions. Word has length 831 [2022-11-21 17:24:08,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:08,570 INFO L495 AbstractCegarLoop]: Abstraction has 3045 states and 3835 transitions. [2022-11-21 17:24:08,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 63.92307692307692) internal successors, (831), 12 states have internal predecessors, (831), 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) [2022-11-21 17:24:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 3835 transitions. [2022-11-21 17:24:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2022-11-21 17:24:08,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:08,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:08,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:24:08,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1295950342, now seen corresponding path program 1 times [2022-11-21 17:24:08,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:08,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481277730] [2022-11-21 17:24:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:08,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:10,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:10,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481277730] [2022-11-21 17:24:10,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481277730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:10,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:10,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:24:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440511618] [2022-11-21 17:24:10,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:10,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:24:10,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:10,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:24:10,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:24:10,421 INFO L87 Difference]: Start difference. First operand 3045 states and 3835 transitions. Second operand has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 5 states have internal predecessors, (838), 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) [2022-11-21 17:24:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:21,083 INFO L93 Difference]: Finished difference Result 7823 states and 11651 transitions. [2022-11-21 17:24:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:24:21,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 5 states have internal predecessors, (838), 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 [2022-11-21 17:24:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:21,104 INFO L225 Difference]: With dead ends: 7823 [2022-11-21 17:24:21,105 INFO L226 Difference]: Without dead ends: 5499 [2022-11-21 17:24:21,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:24:21,110 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 3270 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 9942 mSolverCounterSat, 1658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3270 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 11600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1658 IncrementalHoareTripleChecker+Valid, 9942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:21,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3270 Valid, 795 Invalid, 11600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1658 Valid, 9942 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-21 17:24:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2022-11-21 17:24:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5499. [2022-11-21 17:24:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 5498 states have (on average 1.2530010913059295) internal successors, (6889), 5498 states have internal predecessors, (6889), 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) [2022-11-21 17:24:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 6889 transitions. [2022-11-21 17:24:21,217 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 6889 transitions. Word has length 838 [2022-11-21 17:24:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:21,218 INFO L495 AbstractCegarLoop]: Abstraction has 5499 states and 6889 transitions. [2022-11-21 17:24:21,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 5 states have internal predecessors, (838), 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) [2022-11-21 17:24:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 6889 transitions. [2022-11-21 17:24:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2022-11-21 17:24:21,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:21,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:21,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:24:21,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:21,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:21,233 INFO L85 PathProgramCache]: Analyzing trace with hash -592493934, now seen corresponding path program 1 times [2022-11-21 17:24:21,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:21,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744813538] [2022-11-21 17:24:21,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:21,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:24:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:22,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744813538] [2022-11-21 17:24:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744813538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:22,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:22,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922804988] [2022-11-21 17:24:22,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:22,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:22,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:22,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:22,658 INFO L87 Difference]: Start difference. First operand 5499 states and 6889 transitions. Second operand has 4 states, 4 states have (on average 208.25) internal successors, (833), 3 states have internal predecessors, (833), 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) [2022-11-21 17:24:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:28,683 INFO L93 Difference]: Finished difference Result 12683 states and 17541 transitions. [2022-11-21 17:24:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:24:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 208.25) internal successors, (833), 3 states have internal predecessors, (833), 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 844 [2022-11-21 17:24:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:28,708 INFO L225 Difference]: With dead ends: 12683 [2022-11-21 17:24:28,708 INFO L226 Difference]: Without dead ends: 7135 [2022-11-21 17:24:28,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:28,716 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 812 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3820 mSolverCounterSat, 1928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1928 IncrementalHoareTripleChecker+Valid, 3820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:28,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 768 Invalid, 5748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1928 Valid, 3820 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-21 17:24:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2022-11-21 17:24:28,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 6317. [2022-11-21 17:24:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 6316 states have (on average 1.0821722609246358) internal successors, (6835), 6316 states have internal predecessors, (6835), 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) [2022-11-21 17:24:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 6835 transitions. [2022-11-21 17:24:28,842 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 6835 transitions. Word has length 844 [2022-11-21 17:24:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:28,842 INFO L495 AbstractCegarLoop]: Abstraction has 6317 states and 6835 transitions. [2022-11-21 17:24:28,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.25) internal successors, (833), 3 states have internal predecessors, (833), 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) [2022-11-21 17:24:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 6835 transitions. [2022-11-21 17:24:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2022-11-21 17:24:28,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:28,859 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:28,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:24:28,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash -346156703, now seen corresponding path program 1 times [2022-11-21 17:24:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:28,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919421211] [2022-11-21 17:24:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:28,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-21 17:24:29,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:29,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919421211] [2022-11-21 17:24:29,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919421211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:29,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:29,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:29,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035461215] [2022-11-21 17:24:29,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:29,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:29,666 INFO L87 Difference]: Start difference. First operand 6317 states and 6835 transitions. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 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) [2022-11-21 17:24:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:32,231 INFO L93 Difference]: Finished difference Result 13549 states and 15042 transitions. [2022-11-21 17:24:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:32,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 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 963 [2022-11-21 17:24:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:32,255 INFO L225 Difference]: With dead ends: 13549 [2022-11-21 17:24:32,255 INFO L226 Difference]: Without dead ends: 7953 [2022-11-21 17:24:32,262 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 [2022-11-21 17:24:32,263 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 867 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:32,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 912 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:24:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7953 states. [2022-11-21 17:24:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7953 to 7953. [2022-11-21 17:24:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7953 states, 7952 states have (on average 1.1052565392354126) internal successors, (8789), 7952 states have internal predecessors, (8789), 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) [2022-11-21 17:24:32,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7953 states to 7953 states and 8789 transitions. [2022-11-21 17:24:32,406 INFO L78 Accepts]: Start accepts. Automaton has 7953 states and 8789 transitions. Word has length 963 [2022-11-21 17:24:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:32,406 INFO L495 AbstractCegarLoop]: Abstraction has 7953 states and 8789 transitions. [2022-11-21 17:24:32,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 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) [2022-11-21 17:24:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 7953 states and 8789 transitions. [2022-11-21 17:24:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2022-11-21 17:24:32,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:32,427 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:24:32,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:32,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash 75412341, now seen corresponding path program 1 times [2022-11-21 17:24:32,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:32,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502893403] [2022-11-21 17:24:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:32,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 17:24:33,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:33,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502893403] [2022-11-21 17:24:33,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502893403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:33,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:33,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984410714] [2022-11-21 17:24:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:33,062 INFO L87 Difference]: Start difference. First operand 7953 states and 8789 transitions. Second operand has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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) [2022-11-21 17:24:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:35,488 INFO L93 Difference]: Finished difference Result 20093 states and 22587 transitions. [2022-11-21 17:24:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:35,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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 968 [2022-11-21 17:24:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:35,518 INFO L225 Difference]: With dead ends: 20093 [2022-11-21 17:24:35,518 INFO L226 Difference]: Without dead ends: 12043 [2022-11-21 17:24:35,526 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 [2022-11-21 17:24:35,527 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 829 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:35,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1026 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:24:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12043 states. [2022-11-21 17:24:35,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12043 to 12043. [2022-11-21 17:24:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12043 states, 12042 states have (on average 1.0952499584786581) internal successors, (13189), 12042 states have internal predecessors, (13189), 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) [2022-11-21 17:24:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12043 states to 12043 states and 13189 transitions. [2022-11-21 17:24:35,722 INFO L78 Accepts]: Start accepts. Automaton has 12043 states and 13189 transitions. Word has length 968 [2022-11-21 17:24:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:35,723 INFO L495 AbstractCegarLoop]: Abstraction has 12043 states and 13189 transitions. [2022-11-21 17:24:35,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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) [2022-11-21 17:24:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 12043 states and 13189 transitions. [2022-11-21 17:24:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2022-11-21 17:24:35,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:35,750 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:24:35,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:35,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1030419413, now seen corresponding path program 1 times [2022-11-21 17:24:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:35,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804323855] [2022-11-21 17:24:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-21 17:24:36,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:36,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804323855] [2022-11-21 17:24:36,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804323855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:36,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:36,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:24:36,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417537290] [2022-11-21 17:24:36,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:36,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:36,359 INFO L87 Difference]: Start difference. First operand 12043 states and 13189 transitions. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 2 states have internal predecessors, (940), 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) [2022-11-21 17:24:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:38,767 INFO L93 Difference]: Finished difference Result 28273 states and 31092 transitions. [2022-11-21 17:24:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:38,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 2 states have internal predecessors, (940), 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 998 [2022-11-21 17:24:38,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:38,795 INFO L225 Difference]: With dead ends: 28273 [2022-11-21 17:24:38,795 INFO L226 Difference]: Without dead ends: 16951 [2022-11-21 17:24:38,802 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 [2022-11-21 17:24:38,803 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 773 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:38,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 135 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 17:24:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16951 states. [2022-11-21 17:24:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16951 to 16951. [2022-11-21 17:24:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16951 states, 16950 states have (on average 1.0664306784660766) internal successors, (18076), 16950 states have internal predecessors, (18076), 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) [2022-11-21 17:24:39,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16951 states to 16951 states and 18076 transitions. [2022-11-21 17:24:39,034 INFO L78 Accepts]: Start accepts. Automaton has 16951 states and 18076 transitions. Word has length 998 [2022-11-21 17:24:39,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:39,035 INFO L495 AbstractCegarLoop]: Abstraction has 16951 states and 18076 transitions. [2022-11-21 17:24:39,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 2 states have internal predecessors, (940), 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) [2022-11-21 17:24:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand 16951 states and 18076 transitions. [2022-11-21 17:24:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2022-11-21 17:24:39,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:39,072 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:39,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:24:39,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 673110995, now seen corresponding path program 1 times [2022-11-21 17:24:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:39,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239930668] [2022-11-21 17:24:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:39,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-21 17:24:39,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:39,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239930668] [2022-11-21 17:24:39,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239930668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:39,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:39,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:24:39,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439675756] [2022-11-21 17:24:39,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:39,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:39,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:39,699 INFO L87 Difference]: Start difference. First operand 16951 states and 18076 transitions. Second operand has 3 states, 3 states have (on average 314.0) internal successors, (942), 2 states have internal predecessors, (942), 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) [2022-11-21 17:24:41,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:41,975 INFO L93 Difference]: Finished difference Result 38089 states and 40750 transitions. [2022-11-21 17:24:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:41,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 314.0) internal successors, (942), 2 states have internal predecessors, (942), 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 1081 [2022-11-21 17:24:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:42,018 INFO L225 Difference]: With dead ends: 38089 [2022-11-21 17:24:42,018 INFO L226 Difference]: Without dead ends: 21859 [2022-11-21 17:24:42,032 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 [2022-11-21 17:24:42,033 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:42,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 183 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:24:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21859 states. [2022-11-21 17:24:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21859 to 21041. [2022-11-21 17:24:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21041 states, 21040 states have (on average 1.0601235741444868) internal successors, (22305), 21040 states have internal predecessors, (22305), 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) [2022-11-21 17:24:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21041 states to 21041 states and 22305 transitions. [2022-11-21 17:24:42,417 INFO L78 Accepts]: Start accepts. Automaton has 21041 states and 22305 transitions. Word has length 1081 [2022-11-21 17:24:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:42,419 INFO L495 AbstractCegarLoop]: Abstraction has 21041 states and 22305 transitions. [2022-11-21 17:24:42,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.0) internal successors, (942), 2 states have internal predecessors, (942), 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) [2022-11-21 17:24:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 21041 states and 22305 transitions. [2022-11-21 17:24:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1108 [2022-11-21 17:24:42,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:42,459 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:42,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:24:42,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:42,462 INFO L85 PathProgramCache]: Analyzing trace with hash 688789821, now seen corresponding path program 1 times [2022-11-21 17:24:42,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:42,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569780444] [2022-11-21 17:24:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-21 17:24:43,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:43,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569780444] [2022-11-21 17:24:43,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569780444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:43,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:43,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783378739] [2022-11-21 17:24:43,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:43,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:43,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:43,736 INFO L87 Difference]: Start difference. First operand 21041 states and 22305 transitions. Second operand has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 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) [2022-11-21 17:24:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:46,319 INFO L93 Difference]: Finished difference Result 48723 states and 51930 transitions. [2022-11-21 17:24:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:46,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 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 1107 [2022-11-21 17:24:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:46,385 INFO L225 Difference]: With dead ends: 48723 [2022-11-21 17:24:46,386 INFO L226 Difference]: Without dead ends: 28403 [2022-11-21 17:24:46,408 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 [2022-11-21 17:24:46,411 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 782 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:46,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 322 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:24:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28403 states. [2022-11-21 17:24:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28403 to 28403. [2022-11-21 17:24:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28403 states, 28402 states have (on average 1.0510175339764805) internal successors, (29851), 28402 states have internal predecessors, (29851), 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) [2022-11-21 17:24:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28403 states to 28403 states and 29851 transitions. [2022-11-21 17:24:46,818 INFO L78 Accepts]: Start accepts. Automaton has 28403 states and 29851 transitions. Word has length 1107 [2022-11-21 17:24:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:46,823 INFO L495 AbstractCegarLoop]: Abstraction has 28403 states and 29851 transitions. [2022-11-21 17:24:46,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 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) [2022-11-21 17:24:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 28403 states and 29851 transitions. [2022-11-21 17:24:46,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1183 [2022-11-21 17:24:46,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:46,863 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:46,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:24:46,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:46,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1449793006, now seen corresponding path program 1 times [2022-11-21 17:24:46,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:46,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686171964] [2022-11-21 17:24:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:46,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 17:24:47,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:47,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686171964] [2022-11-21 17:24:47,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686171964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:47,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:47,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142043803] [2022-11-21 17:24:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:47,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:47,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:47,874 INFO L87 Difference]: Start difference. First operand 28403 states and 29851 transitions. Second operand has 3 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 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) [2022-11-21 17:24:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:50,634 INFO L93 Difference]: Finished difference Result 65083 states and 68529 transitions. [2022-11-21 17:24:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:50,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 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 1182 [2022-11-21 17:24:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:50,674 INFO L225 Difference]: With dead ends: 65083 [2022-11-21 17:24:50,675 INFO L226 Difference]: Without dead ends: 37401 [2022-11-21 17:24:50,695 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 [2022-11-21 17:24:50,695 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 845 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:50,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 107 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 17:24:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37401 states. [2022-11-21 17:24:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37401 to 36583. [2022-11-21 17:24:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36583 states, 36582 states have (on average 1.0434913345361108) internal successors, (38173), 36582 states have internal predecessors, (38173), 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) [2022-11-21 17:24:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36583 states to 36583 states and 38173 transitions. [2022-11-21 17:24:51,140 INFO L78 Accepts]: Start accepts. Automaton has 36583 states and 38173 transitions. Word has length 1182 [2022-11-21 17:24:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:51,140 INFO L495 AbstractCegarLoop]: Abstraction has 36583 states and 38173 transitions. [2022-11-21 17:24:51,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 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) [2022-11-21 17:24:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 36583 states and 38173 transitions. [2022-11-21 17:24:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1237 [2022-11-21 17:24:51,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:51,285 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:51,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:24:51,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:51,287 INFO L85 PathProgramCache]: Analyzing trace with hash -283957245, now seen corresponding path program 1 times [2022-11-21 17:24:51,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:51,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891395696] [2022-11-21 17:24:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:51,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-21 17:24:52,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:52,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891395696] [2022-11-21 17:24:52,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891395696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:52,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:52,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:52,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809447678] [2022-11-21 17:24:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:52,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:52,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:52,478 INFO L87 Difference]: Start difference. First operand 36583 states and 38173 transitions. Second operand has 3 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 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) [2022-11-21 17:24:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:55,179 INFO L93 Difference]: Finished difference Result 95349 states and 99738 transitions. [2022-11-21 17:24:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:55,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 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 1236 [2022-11-21 17:24:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:55,244 INFO L225 Difference]: With dead ends: 95349 [2022-11-21 17:24:55,244 INFO L226 Difference]: Without dead ends: 59487 [2022-11-21 17:24:55,269 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 [2022-11-21 17:24:55,270 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 756 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:55,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 953 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:24:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59487 states. [2022-11-21 17:24:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59487 to 57851. [2022-11-21 17:24:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57851 states, 57850 states have (on average 1.041780466724287) internal successors, (60267), 57850 states have internal predecessors, (60267), 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) [2022-11-21 17:24:56,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57851 states to 57851 states and 60267 transitions. [2022-11-21 17:24:56,054 INFO L78 Accepts]: Start accepts. Automaton has 57851 states and 60267 transitions. Word has length 1236 [2022-11-21 17:24:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:56,054 INFO L495 AbstractCegarLoop]: Abstraction has 57851 states and 60267 transitions. [2022-11-21 17:24:56,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 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) [2022-11-21 17:24:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 57851 states and 60267 transitions. [2022-11-21 17:24:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2022-11-21 17:24:56,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:56,108 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:56,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:24:56,109 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:24:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:56,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1732793527, now seen corresponding path program 1 times [2022-11-21 17:24:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:56,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62994219] [2022-11-21 17:24:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 848 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-21 17:24:56,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:56,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62994219] [2022-11-21 17:24:56,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62994219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:56,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:56,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010477229] [2022-11-21 17:24:56,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:56,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:56,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:56,859 INFO L87 Difference]: Start difference. First operand 57851 states and 60267 transitions. Second operand has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 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) [2022-11-21 17:24:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:59,651 INFO L93 Difference]: Finished difference Result 137885 states and 143995 transitions. [2022-11-21 17:24:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 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 1252 [2022-11-21 17:24:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:59,723 INFO L225 Difference]: With dead ends: 137885 [2022-11-21 17:24:59,723 INFO L226 Difference]: Without dead ends: 80755 [2022-11-21 17:24:59,756 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 [2022-11-21 17:24:59,757 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 756 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:59,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 202 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:24:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80755 states. [2022-11-21 17:25:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80755 to 78301. [2022-11-21 17:25:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78301 states, 78300 states have (on average 1.0353767560664113) internal successors, (81070), 78300 states have internal predecessors, (81070), 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) [2022-11-21 17:25:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78301 states to 78301 states and 81070 transitions. [2022-11-21 17:25:00,659 INFO L78 Accepts]: Start accepts. Automaton has 78301 states and 81070 transitions. Word has length 1252 [2022-11-21 17:25:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:00,660 INFO L495 AbstractCegarLoop]: Abstraction has 78301 states and 81070 transitions. [2022-11-21 17:25:00,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 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) [2022-11-21 17:25:00,661 INFO L276 IsEmpty]: Start isEmpty. Operand 78301 states and 81070 transitions. [2022-11-21 17:25:00,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1350 [2022-11-21 17:25:00,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:00,717 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:00,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:25:00,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash 503369294, now seen corresponding path program 1 times [2022-11-21 17:25:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:00,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698046706] [2022-11-21 17:25:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 989 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-21 17:25:02,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698046706] [2022-11-21 17:25:02,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698046706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:02,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:02,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034212420] [2022-11-21 17:25:02,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:02,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:02,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:02,354 INFO L87 Difference]: Start difference. First operand 78301 states and 81070 transitions. Second operand has 3 states, 3 states have (on average 377.6666666666667) internal successors, (1133), 3 states have internal predecessors, (1133), 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) [2022-11-21 17:25:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:05,376 INFO L93 Difference]: Finished difference Result 189421 states and 196311 transitions. [2022-11-21 17:25:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 377.6666666666667) internal successors, (1133), 3 states have internal predecessors, (1133), 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 1349 [2022-11-21 17:25:05,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:05,499 INFO L225 Difference]: With dead ends: 189421 [2022-11-21 17:25:05,500 INFO L226 Difference]: Without dead ends: 111841 [2022-11-21 17:25:05,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:05,718 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 665 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:05,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 889 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:25:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111841 states. [2022-11-21 17:25:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111841 to 106931. [2022-11-21 17:25:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106931 states, 106930 states have (on average 1.0348545777611522) internal successors, (110657), 106930 states have internal predecessors, (110657), 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) [2022-11-21 17:25:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106931 states to 106931 states and 110657 transitions. [2022-11-21 17:25:07,315 INFO L78 Accepts]: Start accepts. Automaton has 106931 states and 110657 transitions. Word has length 1349 [2022-11-21 17:25:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:07,315 INFO L495 AbstractCegarLoop]: Abstraction has 106931 states and 110657 transitions. [2022-11-21 17:25:07,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 377.6666666666667) internal successors, (1133), 3 states have internal predecessors, (1133), 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) [2022-11-21 17:25:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 106931 states and 110657 transitions. [2022-11-21 17:25:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1367 [2022-11-21 17:25:07,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:07,405 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:07,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:25:07,406 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:07,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1998799206, now seen corresponding path program 1 times [2022-11-21 17:25:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:07,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163759393] [2022-11-21 17:25:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:07,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 799 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 17:25:09,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:09,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163759393] [2022-11-21 17:25:09,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163759393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:09,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:09,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898501640] [2022-11-21 17:25:09,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:09,209 INFO L87 Difference]: Start difference. First operand 106931 states and 110657 transitions. Second operand has 3 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 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) [2022-11-21 17:25:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:12,071 INFO L93 Difference]: Finished difference Result 213141 states and 220590 transitions. [2022-11-21 17:25:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:12,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 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 1366 [2022-11-21 17:25:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:12,186 INFO L225 Difference]: With dead ends: 213141 [2022-11-21 17:25:12,186 INFO L226 Difference]: Without dead ends: 106931 [2022-11-21 17:25:12,226 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 [2022-11-21 17:25:12,226 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 509 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:12,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1026 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 17:25:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106931 states. [2022-11-21 17:25:13,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106931 to 106931. [2022-11-21 17:25:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106931 states, 106930 states have (on average 1.034265407275788) internal successors, (110594), 106930 states have internal predecessors, (110594), 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) [2022-11-21 17:25:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106931 states to 106931 states and 110594 transitions. [2022-11-21 17:25:13,987 INFO L78 Accepts]: Start accepts. Automaton has 106931 states and 110594 transitions. Word has length 1366 [2022-11-21 17:25:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:13,987 INFO L495 AbstractCegarLoop]: Abstraction has 106931 states and 110594 transitions. [2022-11-21 17:25:13,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 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) [2022-11-21 17:25:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand 106931 states and 110594 transitions. [2022-11-21 17:25:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1378 [2022-11-21 17:25:14,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:14,081 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, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:14,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:25:14,082 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:14,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2083192046, now seen corresponding path program 1 times [2022-11-21 17:25:14,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:14,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389513552] [2022-11-21 17:25:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-21 17:25:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:15,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389513552] [2022-11-21 17:25:15,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389513552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:15,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:15,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898945938] [2022-11-21 17:25:15,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:15,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:15,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:15,857 INFO L87 Difference]: Start difference. First operand 106931 states and 110594 transitions. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 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) [2022-11-21 17:25:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:18,581 INFO L93 Difference]: Finished difference Result 216413 states and 223825 transitions. [2022-11-21 17:25:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:18,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 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 1377 [2022-11-21 17:25:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:18,691 INFO L225 Difference]: With dead ends: 216413 [2022-11-21 17:25:18,691 INFO L226 Difference]: Without dead ends: 110203 [2022-11-21 17:25:18,732 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 [2022-11-21 17:25:18,732 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 696 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:18,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1050 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:25:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110203 states. [2022-11-21 17:25:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110203 to 109385. [2022-11-21 17:25:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109385 states, 109384 states have (on average 1.0334966722738244) internal successors, (113048), 109384 states have internal predecessors, (113048), 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) [2022-11-21 17:25:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109385 states to 109385 states and 113048 transitions. [2022-11-21 17:25:20,478 INFO L78 Accepts]: Start accepts. Automaton has 109385 states and 113048 transitions. Word has length 1377 [2022-11-21 17:25:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:20,478 INFO L495 AbstractCegarLoop]: Abstraction has 109385 states and 113048 transitions. [2022-11-21 17:25:20,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 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) [2022-11-21 17:25:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 109385 states and 113048 transitions. [2022-11-21 17:25:20,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1468 [2022-11-21 17:25:20,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:20,612 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:20,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:25:20,612 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:20,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:20,614 INFO L85 PathProgramCache]: Analyzing trace with hash 793208712, now seen corresponding path program 1 times [2022-11-21 17:25:20,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:20,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115476512] [2022-11-21 17:25:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:20,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 1096 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-21 17:25:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:22,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115476512] [2022-11-21 17:25:22,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115476512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:22,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:22,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:22,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115220016] [2022-11-21 17:25:22,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:22,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:22,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:22,217 INFO L87 Difference]: Start difference. First operand 109385 states and 113048 transitions. Second operand has 3 states, 3 states have (on average 418.3333333333333) internal successors, (1255), 3 states have internal predecessors, (1255), 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) [2022-11-21 17:25:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:25,062 INFO L93 Difference]: Finished difference Result 224593 states and 231979 transitions. [2022-11-21 17:25:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 418.3333333333333) internal successors, (1255), 3 states have internal predecessors, (1255), 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 1467 [2022-11-21 17:25:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:25,188 INFO L225 Difference]: With dead ends: 224593 [2022-11-21 17:25:25,188 INFO L226 Difference]: Without dead ends: 106113 [2022-11-21 17:25:25,236 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 [2022-11-21 17:25:25,237 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 535 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:25,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 1044 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:25:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106113 states. [2022-11-21 17:25:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106113 to 104477. [2022-11-21 17:25:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104477 states, 104476 states have (on average 1.0254891075462307) internal successors, (107139), 104476 states have internal predecessors, (107139), 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) [2022-11-21 17:25:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104477 states to 104477 states and 107139 transitions. [2022-11-21 17:25:26,833 INFO L78 Accepts]: Start accepts. Automaton has 104477 states and 107139 transitions. Word has length 1467 [2022-11-21 17:25:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:26,834 INFO L495 AbstractCegarLoop]: Abstraction has 104477 states and 107139 transitions. [2022-11-21 17:25:26,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 418.3333333333333) internal successors, (1255), 3 states have internal predecessors, (1255), 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) [2022-11-21 17:25:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 104477 states and 107139 transitions. [2022-11-21 17:25:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2022-11-21 17:25:26,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:26,932 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:26,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:25:26,932 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:26,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1748611072, now seen corresponding path program 1 times [2022-11-21 17:25:26,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:26,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597388186] [2022-11-21 17:25:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:26,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 832 proven. 225 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-21 17:25:31,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:31,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597388186] [2022-11-21 17:25:31,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597388186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:25:31,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619067850] [2022-11-21 17:25:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:31,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:25:31,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:25:31,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:25:31,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:25:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:31,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:25:32,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:25:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 878 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-21 17:25:32,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:25:32,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619067850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:32,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:25:32,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-21 17:25:32,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736529633] [2022-11-21 17:25:32,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:32,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:32,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:25:32,161 INFO L87 Difference]: Start difference. First operand 104477 states and 107139 transitions. Second operand has 3 states, 3 states have (on average 403.6666666666667) internal successors, (1211), 3 states have internal predecessors, (1211), 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) [2022-11-21 17:25:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:35,188 INFO L93 Difference]: Finished difference Result 235227 states and 241244 transitions. [2022-11-21 17:25:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:35,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 403.6666666666667) internal successors, (1211), 3 states have internal predecessors, (1211), 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 1478 [2022-11-21 17:25:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:35,326 INFO L225 Difference]: With dead ends: 235227 [2022-11-21 17:25:35,326 INFO L226 Difference]: Without dead ends: 131471 [2022-11-21 17:25:35,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1483 GetRequests, 1477 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:25:35,373 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 774 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:35,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 121 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:25:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131471 states. [2022-11-21 17:25:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131471 to 118383. [2022-11-21 17:25:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118383 states, 118382 states have (on average 1.0260343633322633) internal successors, (121464), 118382 states have internal predecessors, (121464), 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) [2022-11-21 17:25:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118383 states to 118383 states and 121464 transitions. [2022-11-21 17:25:37,492 INFO L78 Accepts]: Start accepts. Automaton has 118383 states and 121464 transitions. Word has length 1478 [2022-11-21 17:25:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:37,493 INFO L495 AbstractCegarLoop]: Abstraction has 118383 states and 121464 transitions. [2022-11-21 17:25:37,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 403.6666666666667) internal successors, (1211), 3 states have internal predecessors, (1211), 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) [2022-11-21 17:25:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 118383 states and 121464 transitions. [2022-11-21 17:25:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1486 [2022-11-21 17:25:37,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:37,599 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:37,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:25:37,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a68268-120c-4727-a8ec-27f271928627/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:25:37,801 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:37,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash 514557819, now seen corresponding path program 1 times [2022-11-21 17:25:37,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:37,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624843519] [2022-11-21 17:25:37,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:37,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 1115 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-21 17:25:40,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:40,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624843519] [2022-11-21 17:25:40,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624843519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:40,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:40,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:25:40,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519263322] [2022-11-21 17:25:40,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:25:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:25:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:25:40,268 INFO L87 Difference]: Start difference. First operand 118383 states and 121464 transitions. Second operand has 5 states, 5 states have (on average 255.6) internal successors, (1278), 4 states have internal predecessors, (1278), 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) [2022-11-21 17:25:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:46,280 INFO L93 Difference]: Finished difference Result 255490 states and 262239 transitions. [2022-11-21 17:25:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:25:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 255.6) internal successors, (1278), 4 states have internal predecessors, (1278), 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 1485 [2022-11-21 17:25:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:46,412 INFO L225 Difference]: With dead ends: 255490 [2022-11-21 17:25:46,413 INFO L226 Difference]: Without dead ends: 137828 [2022-11-21 17:25:46,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:25:46,439 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 2291 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 5711 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 5711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:46,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 332 Invalid, 5888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 5711 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-21 17:25:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137828 states. [2022-11-21 17:25:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137828 to 118383. [2022-11-21 17:25:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118383 states, 118382 states have (on average 1.0259752327211906) internal successors, (121457), 118382 states have internal predecessors, (121457), 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) [2022-11-21 17:25:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118383 states to 118383 states and 121457 transitions. [2022-11-21 17:25:48,303 INFO L78 Accepts]: Start accepts. Automaton has 118383 states and 121457 transitions. Word has length 1485 [2022-11-21 17:25:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:48,304 INFO L495 AbstractCegarLoop]: Abstraction has 118383 states and 121457 transitions. [2022-11-21 17:25:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.6) internal successors, (1278), 4 states have internal predecessors, (1278), 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) [2022-11-21 17:25:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 118383 states and 121457 transitions. [2022-11-21 17:25:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1491 [2022-11-21 17:25:48,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:48,405 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, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:48,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:25:48,406 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:48,406 INFO L85 PathProgramCache]: Analyzing trace with hash 328291100, now seen corresponding path program 1 times [2022-11-21 17:25:48,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:48,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355330060] [2022-11-21 17:25:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:48,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 789 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2022-11-21 17:25:50,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:50,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355330060] [2022-11-21 17:25:50,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355330060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:50,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:50,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:50,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534674279] [2022-11-21 17:25:50,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:50,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:50,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:50,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:50,052 INFO L87 Difference]: Start difference. First operand 118383 states and 121457 transitions. Second operand has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 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) [2022-11-21 17:25:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:53,178 INFO L93 Difference]: Finished difference Result 236045 states and 242190 transitions. [2022-11-21 17:25:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:53,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 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 1490 [2022-11-21 17:25:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:53,302 INFO L225 Difference]: With dead ends: 236045 [2022-11-21 17:25:53,303 INFO L226 Difference]: Without dead ends: 118383 [2022-11-21 17:25:53,358 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 [2022-11-21 17:25:53,358 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 821 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:53,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 167 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:25:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118383 states. [2022-11-21 17:25:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118383 to 115929. [2022-11-21 17:25:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115929 states, 115928 states have (on average 1.0230142847284522) internal successors, (118596), 115928 states have internal predecessors, (118596), 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) [2022-11-21 17:25:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115929 states to 115929 states and 118596 transitions. [2022-11-21 17:25:55,448 INFO L78 Accepts]: Start accepts. Automaton has 115929 states and 118596 transitions. Word has length 1490 [2022-11-21 17:25:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:55,449 INFO L495 AbstractCegarLoop]: Abstraction has 115929 states and 118596 transitions. [2022-11-21 17:25:55,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 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) [2022-11-21 17:25:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 115929 states and 118596 transitions. [2022-11-21 17:25:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1541 [2022-11-21 17:25:55,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:55,546 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, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:55,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:25:55,547 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:55,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2001902069, now seen corresponding path program 1 times [2022-11-21 17:25:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177482269] [2022-11-21 17:25:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:55,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms