./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem04_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem04_label55.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8 --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 aa468cdeacc2d7780833e7258ebf99c7e35f22152fb9ab283fc568491a2af1a1 --- 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-e04fb08 [2022-11-16 11:43:37,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:43:37,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:43:37,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:43:37,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:43:37,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:43:37,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:43:37,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:43:37,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:43:37,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:43:37,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:43:37,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:43:37,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:43:37,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:43:37,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:43:37,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:43:37,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:43:37,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:43:37,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:43:37,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:43:37,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:43:37,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:43:37,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:43:37,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:43:37,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:43:37,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:43:37,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:43:37,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:43:37,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:43:37,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:43:37,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:43:37,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:43:37,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:43:37,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:43:37,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:43:37,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:43:37,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:43:37,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:43:37,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:43:37,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:43:37,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:43:37,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:43:37,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:43:37,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:43:37,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:43:37,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:43:37,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:43:37,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:43:37,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:43:37,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:43:37,353 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:43:37,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:43:37,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:43:37,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:43:37,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:43:37,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:43:37,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:43:37,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:43:37,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:43:37,356 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:43:37,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:43:37,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:43:37,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:43:37,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:43:37,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:43:37,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:43:37,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:37,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:43:37,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:43:37,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:43:37,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:43:37,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:43:37,360 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:43:37,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:43:37,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:43:37,361 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_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa468cdeacc2d7780833e7258ebf99c7e35f22152fb9ab283fc568491a2af1a1 [2022-11-16 11:43:37,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:43:37,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:43:37,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:43:37,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:43:37,740 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:43:37,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem04_label55.c [2022-11-16 11:43:37,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/data/58b6323c0/48b2f7aac63e40d8a57914f100928b3f/FLAG1d7046ddf [2022-11-16 11:43:38,942 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:43:38,943 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/sv-benchmarks/c/eca-rers2012/Problem04_label55.c [2022-11-16 11:43:38,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/data/58b6323c0/48b2f7aac63e40d8a57914f100928b3f/FLAG1d7046ddf [2022-11-16 11:43:39,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/data/58b6323c0/48b2f7aac63e40d8a57914f100928b3f [2022-11-16 11:43:39,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:43:39,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:43:39,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:39,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:43:39,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:43:39,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:39" (1/1) ... [2022-11-16 11:43:39,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b98e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:39, skipping insertion in model container [2022-11-16 11:43:39,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:39" (1/1) ... [2022-11-16 11:43:39,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:43:39,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:43:41,318 WARN L229 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_3df1bc22-e7ff-4c25-a015-cefbffc00c27/sv-benchmarks/c/eca-rers2012/Problem04_label55.c[178827,178840] [2022-11-16 11:43:41,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:41,366 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:43:42,321 WARN L229 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_3df1bc22-e7ff-4c25-a015-cefbffc00c27/sv-benchmarks/c/eca-rers2012/Problem04_label55.c[178827,178840] [2022-11-16 11:43:42,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:42,372 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:43:42,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42 WrapperNode [2022-11-16 11:43:42,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:42,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:42,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:43:42,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:43:42,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,747 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5572 [2022-11-16 11:43:42,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:42,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:43:42,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:43:42,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:43:42,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,947 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:42,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:43:42,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:43:42,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:43:42,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:43:43,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (1/1) ... [2022-11-16 11:43:43,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:43,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:43,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:43:43,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:43:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:43:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:43:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:43:43,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:43:43,322 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:43:43,325 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:43:49,267 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:43:49,300 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:43:49,300 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:43:49,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:49 BoogieIcfgContainer [2022-11-16 11:43:49,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:43:49,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:43:49,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:43:49,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:43:49,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:43:39" (1/3) ... [2022-11-16 11:43:49,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb389c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:49, skipping insertion in model container [2022-11-16 11:43:49,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:42" (2/3) ... [2022-11-16 11:43:49,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb389c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:49, skipping insertion in model container [2022-11-16 11:43:49,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:49" (3/3) ... [2022-11-16 11:43:49,322 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label55.c [2022-11-16 11:43:49,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:43:49,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:43:49,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:43:49,519 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;@1944e984, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:43:49,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:43:49,536 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) [2022-11-16 11:43:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2022-11-16 11:43:49,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:49,611 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] [2022-11-16 11:43:49,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:49,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash -561385819, now seen corresponding path program 1 times [2022-11-16 11:43:49,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:49,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126159621] [2022-11-16 11:43:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:02,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:02,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126159621] [2022-11-16 11:44:02,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126159621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:02,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:02,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:44:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981613969] [2022-11-16 11:44:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:02,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:44:02,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:44:02,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:44:02,200 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 64.5) internal successors, (774), 11 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:11,219 INFO L93 Difference]: Finished difference Result 2490 states and 4835 transitions. [2022-11-16 11:44:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:44:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 64.5) internal successors, (774), 11 states have internal predecessors, (774), 0 states have call successors, (0), 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 774 [2022-11-16 11:44:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:11,265 INFO L225 Difference]: With dead ends: 2490 [2022-11-16 11:44:11,266 INFO L226 Difference]: Without dead ends: 1541 [2022-11-16 11:44:11,273 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 [2022-11-16 11:44:11,284 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 2108 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6526 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s 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, 8.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:11,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 964 Invalid, 7237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [711 Valid, 6526 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-16 11:44:11,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-11-16 11:44:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1541. [2022-11-16 11:44:11,401 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) [2022-11-16 11:44:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2296 transitions. [2022-11-16 11:44:11,410 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2296 transitions. Word has length 774 [2022-11-16 11:44:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:11,412 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2296 transitions. [2022-11-16 11:44:11,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.5) internal successors, (774), 11 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2296 transitions. [2022-11-16 11:44:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-11-16 11:44:11,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:11,450 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] [2022-11-16 11:44:11,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:44:11,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash -402816186, now seen corresponding path program 1 times [2022-11-16 11:44:11,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:11,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638349928] [2022-11-16 11:44:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:19,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:19,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638349928] [2022-11-16 11:44:19,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638349928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:19,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:19,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:44:19,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142666056] [2022-11-16 11:44:19,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:19,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:44:19,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:44:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:44:19,058 INFO L87 Difference]: Start difference. First operand 1541 states and 2296 transitions. Second operand has 13 states, 13 states have (on average 60.69230769230769) internal successors, (789), 12 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:30,035 INFO L93 Difference]: Finished difference Result 3865 states and 6804 transitions. [2022-11-16 11:44:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:44:30,037 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 60.69230769230769) internal successors, (789), 12 states have internal predecessors, (789), 0 states have call successors, (0), 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 789 [2022-11-16 11:44:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:30,051 INFO L225 Difference]: With dead ends: 3865 [2022-11-16 11:44:30,051 INFO L226 Difference]: Without dead ends: 3045 [2022-11-16 11:44:30,053 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 [2022-11-16 11:44:30,055 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 2559 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 10068 mSolverCounterSat, 1410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 11478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1410 IncrementalHoareTripleChecker+Valid, 10068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:30,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 909 Invalid, 11478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1410 Valid, 10068 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-16 11:44:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-11-16 11:44:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3045. [2022-11-16 11:44:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3044 states have (on average 1.2601839684625493) internal successors, (3836), 3044 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 3836 transitions. [2022-11-16 11:44:30,138 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 3836 transitions. Word has length 789 [2022-11-16 11:44:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:30,140 INFO L495 AbstractCegarLoop]: Abstraction has 3045 states and 3836 transitions. [2022-11-16 11:44:30,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 60.69230769230769) internal successors, (789), 12 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:30,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 3836 transitions. [2022-11-16 11:44:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2022-11-16 11:44:30,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:30,154 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] [2022-11-16 11:44:30,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:44:30,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1730199758, now seen corresponding path program 1 times [2022-11-16 11:44:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:30,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389652754] [2022-11-16 11:44:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:30,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 11:44:31,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:31,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389652754] [2022-11-16 11:44:31,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389652754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:31,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:31,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:44:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284822988] [2022-11-16 11:44:31,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:31,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:31,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:31,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:31,266 INFO L87 Difference]: Start difference. First operand 3045 states and 3836 transitions. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 2 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:35,092 INFO L93 Difference]: Finished difference Result 7005 states and 9364 transitions. [2022-11-16 11:44:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:35,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 2 states have internal predecessors, (776), 0 states have call successors, (0), 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 796 [2022-11-16 11:44:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:35,115 INFO L225 Difference]: With dead ends: 7005 [2022-11-16 11:44:35,115 INFO L226 Difference]: Without dead ends: 4681 [2022-11-16 11:44:35,119 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 [2022-11-16 11:44:35,120 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 91 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:35,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 213 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 11:44:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2022-11-16 11:44:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4681. [2022-11-16 11:44:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4681 states, 4680 states have (on average 1.294871794871795) internal successors, (6060), 4680 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4681 states to 4681 states and 6060 transitions. [2022-11-16 11:44:35,240 INFO L78 Accepts]: Start accepts. Automaton has 4681 states and 6060 transitions. Word has length 796 [2022-11-16 11:44:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:35,241 INFO L495 AbstractCegarLoop]: Abstraction has 4681 states and 6060 transitions. [2022-11-16 11:44:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 2 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4681 states and 6060 transitions. [2022-11-16 11:44:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2022-11-16 11:44:35,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:35,258 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-16 11:44:35,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:44:35,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 675531084, now seen corresponding path program 1 times [2022-11-16 11:44:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:35,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680841157] [2022-11-16 11:44:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:36,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680841157] [2022-11-16 11:44:36,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680841157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:36,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:36,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:36,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968822231] [2022-11-16 11:44:36,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:36,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:44:36,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:44:36,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:44:36,514 INFO L87 Difference]: Start difference. First operand 4681 states and 6060 transitions. Second operand has 4 states, 4 states have (on average 200.0) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:42,322 INFO L93 Difference]: Finished difference Result 9459 states and 12770 transitions. [2022-11-16 11:44:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:44:42,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 200.0) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 800 [2022-11-16 11:44:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:42,344 INFO L225 Difference]: With dead ends: 9459 [2022-11-16 11:44:42,344 INFO L226 Difference]: Without dead ends: 5499 [2022-11-16 11:44:42,350 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 [2022-11-16 11:44:42,351 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1785 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4398 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 5050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 4398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:42,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1785 Valid, 225 Invalid, 5050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 4398 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-16 11:44:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2022-11-16 11:44:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5499. [2022-11-16 11:44:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 5498 states have (on average 1.3121134958166607) internal successors, (7214), 5498 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 7214 transitions. [2022-11-16 11:44:42,474 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 7214 transitions. Word has length 800 [2022-11-16 11:44:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:42,475 INFO L495 AbstractCegarLoop]: Abstraction has 5499 states and 7214 transitions. [2022-11-16 11:44:42,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.0) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 7214 transitions. [2022-11-16 11:44:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2022-11-16 11:44:42,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:42,493 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] [2022-11-16 11:44:42,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:44:42,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:42,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1185029686, now seen corresponding path program 1 times [2022-11-16 11:44:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:42,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732682885] [2022-11-16 11:44:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:42,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:44,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:44,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732682885] [2022-11-16 11:44:44,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732682885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:44,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:44,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:44,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720699209] [2022-11-16 11:44:44,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:44,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:44:44,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:44:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:44:44,356 INFO L87 Difference]: Start difference. First operand 5499 states and 7214 transitions. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:51,451 INFO L93 Difference]: Finished difference Result 13501 states and 19321 transitions. [2022-11-16 11:44:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:44:51,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 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 802 [2022-11-16 11:44:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:51,479 INFO L225 Difference]: With dead ends: 13501 [2022-11-16 11:44:51,480 INFO L226 Difference]: Without dead ends: 7953 [2022-11-16 11:44:51,487 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 [2022-11-16 11:44:51,488 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 813 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 1656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 5461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1656 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:51,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 736 Invalid, 5461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1656 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-16 11:44:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7953 states. [2022-11-16 11:44:51,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7953 to 7953. [2022-11-16 11:44:51,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7953 states, 7952 states have (on average 1.0836267605633803) internal successors, (8617), 7952 states have internal predecessors, (8617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7953 states to 7953 states and 8617 transitions. [2022-11-16 11:44:51,649 INFO L78 Accepts]: Start accepts. Automaton has 7953 states and 8617 transitions. Word has length 802 [2022-11-16 11:44:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:51,649 INFO L495 AbstractCegarLoop]: Abstraction has 7953 states and 8617 transitions. [2022-11-16 11:44:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 7953 states and 8617 transitions. [2022-11-16 11:44:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2022-11-16 11:44:51,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:51,674 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:51,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:44:51,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:51,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2145496314, now seen corresponding path program 1 times [2022-11-16 11:44:51,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:51,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366117552] [2022-11-16 11:44:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:44:52,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:52,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366117552] [2022-11-16 11:44:52,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366117552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:52,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:52,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:44:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773093450] [2022-11-16 11:44:52,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:52,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:52,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:52,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:52,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:52,359 INFO L87 Difference]: Start difference. First operand 7953 states and 8617 transitions. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 2 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:55,270 INFO L93 Difference]: Finished difference Result 18457 states and 20128 transitions. [2022-11-16 11:44:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:55,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 2 states have internal predecessors, (847), 0 states have call successors, (0), 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 893 [2022-11-16 11:44:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:55,306 INFO L225 Difference]: With dead ends: 18457 [2022-11-16 11:44:55,307 INFO L226 Difference]: Without dead ends: 11225 [2022-11-16 11:44:55,316 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 [2022-11-16 11:44:55,318 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 799 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:55,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 89 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:44:55,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11225 states. [2022-11-16 11:44:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11225 to 11225. [2022-11-16 11:44:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11225 states, 11224 states have (on average 1.0714540270848183) internal successors, (12026), 11224 states have internal predecessors, (12026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11225 states to 11225 states and 12026 transitions. [2022-11-16 11:44:55,519 INFO L78 Accepts]: Start accepts. Automaton has 11225 states and 12026 transitions. Word has length 893 [2022-11-16 11:44:55,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:55,520 INFO L495 AbstractCegarLoop]: Abstraction has 11225 states and 12026 transitions. [2022-11-16 11:44:55,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 2 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:55,521 INFO L276 IsEmpty]: Start isEmpty. Operand 11225 states and 12026 transitions. [2022-11-16 11:44:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2022-11-16 11:44:55,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:55,548 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:44:55,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:55,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash 768411964, now seen corresponding path program 1 times [2022-11-16 11:44:55,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:55,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704129363] [2022-11-16 11:44:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:55,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:44:56,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:56,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704129363] [2022-11-16 11:44:56,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704129363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:56,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:56,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983769706] [2022-11-16 11:44:56,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:56,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:56,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:56,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:56,435 INFO L87 Difference]: Start difference. First operand 11225 states and 12026 transitions. Second operand has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:59,558 INFO L93 Difference]: Finished difference Result 25819 states and 28095 transitions. [2022-11-16 11:44:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:59,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 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 910 [2022-11-16 11:44:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:59,587 INFO L225 Difference]: With dead ends: 25819 [2022-11-16 11:44:59,587 INFO L226 Difference]: Without dead ends: 15315 [2022-11-16 11:44:59,599 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 [2022-11-16 11:44:59,600 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 104 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:59,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 914 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:44:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15315 states. [2022-11-16 11:44:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15315 to 15315. [2022-11-16 11:44:59,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15315 states, 15314 states have (on average 1.0841713464803449) internal successors, (16603), 15314 states have internal predecessors, (16603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15315 states to 15315 states and 16603 transitions. [2022-11-16 11:44:59,860 INFO L78 Accepts]: Start accepts. Automaton has 15315 states and 16603 transitions. Word has length 910 [2022-11-16 11:44:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:59,861 INFO L495 AbstractCegarLoop]: Abstraction has 15315 states and 16603 transitions. [2022-11-16 11:44:59,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 15315 states and 16603 transitions. [2022-11-16 11:44:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2022-11-16 11:44:59,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:59,898 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:59,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:44:59,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2103228245, now seen corresponding path program 1 times [2022-11-16 11:44:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:59,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935336054] [2022-11-16 11:44:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:45:00,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:00,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935336054] [2022-11-16 11:45:00,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935336054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:00,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:00,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963855535] [2022-11-16 11:45:00,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:00,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:00,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:00,640 INFO L87 Difference]: Start difference. First operand 15315 states and 16603 transitions. Second operand has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:03,606 INFO L93 Difference]: Finished difference Result 29909 states and 32482 transitions. [2022-11-16 11:45:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:03,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 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 1025 [2022-11-16 11:45:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:03,643 INFO L225 Difference]: With dead ends: 29909 [2022-11-16 11:45:03,644 INFO L226 Difference]: Without dead ends: 15315 [2022-11-16 11:45:03,660 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 [2022-11-16 11:45:03,661 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 739 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:03,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 992 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:45:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15315 states. [2022-11-16 11:45:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15315 to 15315. [2022-11-16 11:45:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15315 states, 15314 states have (on average 1.0731356928300901) internal successors, (16434), 15314 states have internal predecessors, (16434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15315 states to 15315 states and 16434 transitions. [2022-11-16 11:45:04,017 INFO L78 Accepts]: Start accepts. Automaton has 15315 states and 16434 transitions. Word has length 1025 [2022-11-16 11:45:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:04,019 INFO L495 AbstractCegarLoop]: Abstraction has 15315 states and 16434 transitions. [2022-11-16 11:45:04,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 15315 states and 16434 transitions. [2022-11-16 11:45:04,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2022-11-16 11:45:04,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:04,052 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:45:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:45:04,055 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash -19406951, now seen corresponding path program 1 times [2022-11-16 11:45:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:04,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248583952] [2022-11-16 11:45:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:04,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-16 11:45:04,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:04,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248583952] [2022-11-16 11:45:04,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248583952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:04,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:04,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:04,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685221835] [2022-11-16 11:45:04,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:04,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:04,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:04,943 INFO L87 Difference]: Start difference. First operand 15315 states and 16434 transitions. Second operand has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:07,995 INFO L93 Difference]: Finished difference Result 42179 states and 45513 transitions. [2022-11-16 11:45:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:07,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 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 1028 [2022-11-16 11:45:07,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:08,053 INFO L225 Difference]: With dead ends: 42179 [2022-11-16 11:45:08,054 INFO L226 Difference]: Without dead ends: 27585 [2022-11-16 11:45:08,069 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 [2022-11-16 11:45:08,070 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 49 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:08,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1085 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:45:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27585 states. [2022-11-16 11:45:08,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27585 to 27585. [2022-11-16 11:45:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27585 states, 27584 states have (on average 1.060506090487239) internal successors, (29253), 27584 states have internal predecessors, (29253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27585 states to 27585 states and 29253 transitions. [2022-11-16 11:45:08,469 INFO L78 Accepts]: Start accepts. Automaton has 27585 states and 29253 transitions. Word has length 1028 [2022-11-16 11:45:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:08,470 INFO L495 AbstractCegarLoop]: Abstraction has 27585 states and 29253 transitions. [2022-11-16 11:45:08,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 27585 states and 29253 transitions. [2022-11-16 11:45:08,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2022-11-16 11:45:08,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:08,519 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, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:45:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:45:08,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash 914919972, now seen corresponding path program 1 times [2022-11-16 11:45:08,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:08,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356805391] [2022-11-16 11:45:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:08,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-16 11:45:09,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:09,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356805391] [2022-11-16 11:45:09,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356805391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:09,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:09,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:45:09,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778967253] [2022-11-16 11:45:09,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:09,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:09,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:09,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:09,312 INFO L87 Difference]: Start difference. First operand 27585 states and 29253 transitions. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 2 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:12,193 INFO L93 Difference]: Finished difference Result 54449 states and 57782 transitions. [2022-11-16 11:45:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 2 states have internal predecessors, (899), 0 states have call successors, (0), 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 1071 [2022-11-16 11:45:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:12,240 INFO L225 Difference]: With dead ends: 54449 [2022-11-16 11:45:12,241 INFO L226 Difference]: Without dead ends: 27585 [2022-11-16 11:45:12,255 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 [2022-11-16 11:45:12,256 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 782 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:12,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 126 Invalid, 2037 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:45:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27585 states. [2022-11-16 11:45:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27585 to 27585. [2022-11-16 11:45:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27585 states, 27584 states have (on average 1.041147041763341) internal successors, (28719), 27584 states have internal predecessors, (28719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27585 states to 27585 states and 28719 transitions. [2022-11-16 11:45:12,641 INFO L78 Accepts]: Start accepts. Automaton has 27585 states and 28719 transitions. Word has length 1071 [2022-11-16 11:45:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:12,642 INFO L495 AbstractCegarLoop]: Abstraction has 27585 states and 28719 transitions. [2022-11-16 11:45:12,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 2 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 27585 states and 28719 transitions. [2022-11-16 11:45:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2022-11-16 11:45:12,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:12,677 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, 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, 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] [2022-11-16 11:45:12,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:45:12,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1267019753, now seen corresponding path program 1 times [2022-11-16 11:45:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759194403] [2022-11-16 11:45:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:12,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-16 11:45:13,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:13,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759194403] [2022-11-16 11:45:13,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759194403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:13,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:13,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:45:13,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844786002] [2022-11-16 11:45:13,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:13,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:13,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:13,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:13,450 INFO L87 Difference]: Start difference. First operand 27585 states and 28719 transitions. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 2 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:16,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:16,459 INFO L93 Difference]: Finished difference Result 63447 states and 66204 transitions. [2022-11-16 11:45:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:16,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 2 states have internal predecessors, (899), 0 states have call successors, (0), 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 1074 [2022-11-16 11:45:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:16,504 INFO L225 Difference]: With dead ends: 63447 [2022-11-16 11:45:16,504 INFO L226 Difference]: Without dead ends: 36583 [2022-11-16 11:45:16,522 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 [2022-11-16 11:45:16,523 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 813 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:16,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 56 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 11:45:16,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36583 states. [2022-11-16 11:45:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36583 to 34947. [2022-11-16 11:45:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34947 states, 34946 states have (on average 1.042179362444915) internal successors, (36420), 34946 states have internal predecessors, (36420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34947 states to 34947 states and 36420 transitions. [2022-11-16 11:45:17,033 INFO L78 Accepts]: Start accepts. Automaton has 34947 states and 36420 transitions. Word has length 1074 [2022-11-16 11:45:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:17,034 INFO L495 AbstractCegarLoop]: Abstraction has 34947 states and 36420 transitions. [2022-11-16 11:45:17,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 2 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 34947 states and 36420 transitions. [2022-11-16 11:45:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1155 [2022-11-16 11:45:17,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:17,083 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 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] [2022-11-16 11:45:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:45:17,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -367544346, now seen corresponding path program 1 times [2022-11-16 11:45:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110407686] [2022-11-16 11:45:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 536 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-16 11:45:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:17,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110407686] [2022-11-16 11:45:17,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110407686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:17,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:17,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:45:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424310188] [2022-11-16 11:45:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:17,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:17,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:17,774 INFO L87 Difference]: Start difference. First operand 34947 states and 36420 transitions. Second operand has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 2 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:20,888 INFO L93 Difference]: Finished difference Result 81443 states and 84960 transitions. [2022-11-16 11:45:20,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:20,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 2 states have internal predecessors, (901), 0 states have call successors, (0), 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 1154 [2022-11-16 11:45:20,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:20,932 INFO L225 Difference]: With dead ends: 81443 [2022-11-16 11:45:20,933 INFO L226 Difference]: Without dead ends: 47217 [2022-11-16 11:45:20,955 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 [2022-11-16 11:45:20,956 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:20,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 184 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:45:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47217 states. [2022-11-16 11:45:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47217 to 43127. [2022-11-16 11:45:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43127 states, 43126 states have (on average 1.0378657886193943) internal successors, (44759), 43126 states have internal predecessors, (44759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43127 states to 43127 states and 44759 transitions. [2022-11-16 11:45:21,596 INFO L78 Accepts]: Start accepts. Automaton has 43127 states and 44759 transitions. Word has length 1154 [2022-11-16 11:45:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:21,596 INFO L495 AbstractCegarLoop]: Abstraction has 43127 states and 44759 transitions. [2022-11-16 11:45:21,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 2 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 43127 states and 44759 transitions. [2022-11-16 11:45:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1190 [2022-11-16 11:45:21,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:21,647 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, 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, 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] [2022-11-16 11:45:21,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:45:21,648 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:21,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash 10718055, now seen corresponding path program 1 times [2022-11-16 11:45:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:21,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618140981] [2022-11-16 11:45:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:21,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-16 11:45:22,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:22,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618140981] [2022-11-16 11:45:22,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618140981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:22,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:22,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:22,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442739452] [2022-11-16 11:45:22,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:22,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:22,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:22,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:22,555 INFO L87 Difference]: Start difference. First operand 43127 states and 44759 transitions. Second operand has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:25,519 INFO L93 Difference]: Finished difference Result 85533 states and 88794 transitions. [2022-11-16 11:45:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:25,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 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 1189 [2022-11-16 11:45:25,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:25,558 INFO L225 Difference]: With dead ends: 85533 [2022-11-16 11:45:25,558 INFO L226 Difference]: Without dead ends: 43127 [2022-11-16 11:45:25,582 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 [2022-11-16 11:45:25,583 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 733 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:25,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 189 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 11:45:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43127 states. [2022-11-16 11:45:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43127 to 43127. [2022-11-16 11:45:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43127 states, 43126 states have (on average 1.02655010898298) internal successors, (44271), 43126 states have internal predecessors, (44271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43127 states to 43127 states and 44271 transitions. [2022-11-16 11:45:26,045 INFO L78 Accepts]: Start accepts. Automaton has 43127 states and 44271 transitions. Word has length 1189 [2022-11-16 11:45:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:26,046 INFO L495 AbstractCegarLoop]: Abstraction has 43127 states and 44271 transitions. [2022-11-16 11:45:26,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 43127 states and 44271 transitions. [2022-11-16 11:45:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1308 [2022-11-16 11:45:26,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:26,233 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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] [2022-11-16 11:45:26,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:45:26,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:26,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1870693525, now seen corresponding path program 1 times [2022-11-16 11:45:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:26,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366524884] [2022-11-16 11:45:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:26,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 1142 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2022-11-16 11:45:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:27,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366524884] [2022-11-16 11:45:27,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366524884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:27,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:27,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:27,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815576383] [2022-11-16 11:45:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:27,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:27,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:27,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:27,192 INFO L87 Difference]: Start difference. First operand 43127 states and 44271 transitions. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:30,266 INFO L93 Difference]: Finished difference Result 115799 states and 119026 transitions. [2022-11-16 11:45:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:30,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 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 1307 [2022-11-16 11:45:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:30,331 INFO L225 Difference]: With dead ends: 115799 [2022-11-16 11:45:30,331 INFO L226 Difference]: Without dead ends: 73393 [2022-11-16 11:45:30,355 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 [2022-11-16 11:45:30,356 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 798 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:30,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 234 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 11:45:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73393 states. [2022-11-16 11:45:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73393 to 66849. [2022-11-16 11:45:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66849 states, 66848 states have (on average 1.027136189564385) internal successors, (68662), 66848 states have internal predecessors, (68662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66849 states to 66849 states and 68662 transitions. [2022-11-16 11:45:31,305 INFO L78 Accepts]: Start accepts. Automaton has 66849 states and 68662 transitions. Word has length 1307 [2022-11-16 11:45:31,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:31,306 INFO L495 AbstractCegarLoop]: Abstraction has 66849 states and 68662 transitions. [2022-11-16 11:45:31,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 66849 states and 68662 transitions. [2022-11-16 11:45:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1517 [2022-11-16 11:45:31,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:31,353 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-11-16 11:45:31,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:45:31,353 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash 489792377, now seen corresponding path program 1 times [2022-11-16 11:45:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:31,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127352096] [2022-11-16 11:45:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 1391 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2022-11-16 11:45:32,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:32,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127352096] [2022-11-16 11:45:32,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127352096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:32,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:32,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:32,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99246236] [2022-11-16 11:45:32,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:32,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:32,819 INFO L87 Difference]: Start difference. First operand 66849 states and 68662 transitions. Second operand has 3 states, 3 states have (on average 404.3333333333333) internal successors, (1213), 3 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:35,937 INFO L93 Difference]: Finished difference Result 140339 states and 144054 transitions. [2022-11-16 11:45:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 404.3333333333333) internal successors, (1213), 3 states have internal predecessors, (1213), 0 states have call successors, (0), 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 1516 [2022-11-16 11:45:35,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:36,006 INFO L225 Difference]: With dead ends: 140339 [2022-11-16 11:45:36,006 INFO L226 Difference]: Without dead ends: 67667 [2022-11-16 11:45:36,040 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 [2022-11-16 11:45:36,041 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 533 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:36,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1047 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:45:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67667 states. [2022-11-16 11:45:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67667 to 65213. [2022-11-16 11:45:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65213 states, 65212 states have (on average 1.020165000306692) internal successors, (66527), 65212 states have internal predecessors, (66527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65213 states to 65213 states and 66527 transitions. [2022-11-16 11:45:37,244 INFO L78 Accepts]: Start accepts. Automaton has 65213 states and 66527 transitions. Word has length 1516 [2022-11-16 11:45:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:37,245 INFO L495 AbstractCegarLoop]: Abstraction has 65213 states and 66527 transitions. [2022-11-16 11:45:37,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 404.3333333333333) internal successors, (1213), 3 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 65213 states and 66527 transitions. [2022-11-16 11:45:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2022-11-16 11:45:37,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:37,473 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, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 11:45:37,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:45:37,473 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:37,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1796171606, now seen corresponding path program 1 times [2022-11-16 11:45:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:37,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516481481] [2022-11-16 11:45:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:37,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 1612 proven. 89 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-16 11:45:40,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:40,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516481481] [2022-11-16 11:45:40,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516481481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:40,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909784142] [2022-11-16 11:45:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:40,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:40,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:40,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:40,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:45:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:41,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:45:41,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 1336 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-11-16 11:45:43,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:43,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909784142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:43,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:43,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-16 11:45:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005473319] [2022-11-16 11:45:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:43,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:43,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:43,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:43,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:43,655 INFO L87 Difference]: Start difference. First operand 65213 states and 66527 transitions. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:46,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:46,654 INFO L93 Difference]: Finished difference Result 129705 states and 132330 transitions. [2022-11-16 11:45:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:46,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 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 1589 [2022-11-16 11:45:46,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:46,726 INFO L225 Difference]: With dead ends: 129705 [2022-11-16 11:45:46,726 INFO L226 Difference]: Without dead ends: 65213 [2022-11-16 11:45:46,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1593 GetRequests, 1588 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:46,747 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 178 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:46,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 921 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 11:45:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65213 states. [2022-11-16 11:45:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65213 to 64395. [2022-11-16 11:45:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64395 states, 64394 states have (on average 1.014240457185452) internal successors, (65311), 64394 states have internal predecessors, (65311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64395 states to 64395 states and 65311 transitions. [2022-11-16 11:45:47,524 INFO L78 Accepts]: Start accepts. Automaton has 64395 states and 65311 transitions. Word has length 1589 [2022-11-16 11:45:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:47,525 INFO L495 AbstractCegarLoop]: Abstraction has 64395 states and 65311 transitions. [2022-11-16 11:45:47,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 64395 states and 65311 transitions. [2022-11-16 11:45:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3549 [2022-11-16 11:45:48,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:48,059 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:45:48,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:48,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:45:48,261 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:48,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1319839828, now seen corresponding path program 1 times [2022-11-16 11:45:48,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:48,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140680746] [2022-11-16 11:45:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:48,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10962 backedges. 4167 proven. 89 refuted. 0 times theorem prover too weak. 6706 trivial. 0 not checked. [2022-11-16 11:45:56,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:56,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140680746] [2022-11-16 11:45:56,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140680746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:56,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544152297] [2022-11-16 11:45:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:56,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:56,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:56,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:56,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:45:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:58,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 4100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:45:58,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10962 backedges. 6523 proven. 0 refuted. 0 times theorem prover too weak. 4439 trivial. 0 not checked. [2022-11-16 11:45:58,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:58,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544152297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:58,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:58,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-16 11:45:59,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077015457] [2022-11-16 11:45:59,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:59,004 INFO L87 Difference]: Start difference. First operand 64395 states and 65311 transitions. Second operand has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:02,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:02,125 INFO L93 Difference]: Finished difference Result 138017 states and 140073 transitions. [2022-11-16 11:46:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:46:02,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 0 states have call successors, (0), 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 3548 [2022-11-16 11:46:02,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:02,197 INFO L225 Difference]: With dead ends: 138017 [2022-11-16 11:46:02,197 INFO L226 Difference]: Without dead ends: 83209 [2022-11-16 11:46:02,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3552 GetRequests, 3547 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:46:02,228 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 636 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:02,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 107 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:46:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83209 states. [2022-11-16 11:46:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83209 to 82391. [2022-11-16 11:46:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82391 states, 82390 states have (on average 1.0125743415463042) internal successors, (83426), 82390 states have internal predecessors, (83426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82391 states to 82391 states and 83426 transitions. [2022-11-16 11:46:03,509 INFO L78 Accepts]: Start accepts. Automaton has 82391 states and 83426 transitions. Word has length 3548 [2022-11-16 11:46:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:03,511 INFO L495 AbstractCegarLoop]: Abstraction has 82391 states and 83426 transitions. [2022-11-16 11:46:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 82391 states and 83426 transitions. [2022-11-16 11:46:03,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4395 [2022-11-16 11:46:03,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:03,978 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:03,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:04,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:46:04,187 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:04,190 INFO L85 PathProgramCache]: Analyzing trace with hash 466938770, now seen corresponding path program 1 times [2022-11-16 11:46:04,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:04,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382291342] [2022-11-16 11:46:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:04,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 17999 backedges. 5583 proven. 89 refuted. 0 times theorem prover too weak. 12327 trivial. 0 not checked. [2022-11-16 11:46:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:15,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382291342] [2022-11-16 11:46:15,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382291342] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790540328] [2022-11-16 11:46:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:15,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:15,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:15,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:15,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:46:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:18,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 5050 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:46:18,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 17999 backedges. 10904 proven. 0 refuted. 0 times theorem prover too weak. 7095 trivial. 0 not checked. [2022-11-16 11:46:19,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:46:19,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790540328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:19,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:46:19,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-16 11:46:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069576854] [2022-11-16 11:46:19,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:19,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:46:19,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:19,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:46:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:46:19,465 INFO L87 Difference]: Start difference. First operand 82391 states and 83426 transitions. Second operand has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 3 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:22,941 INFO L93 Difference]: Finished difference Result 189419 states and 191878 transitions. [2022-11-16 11:46:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:46:22,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 3 states have internal predecessors, (1751), 0 states have call successors, (0), 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 4394 [2022-11-16 11:46:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:23,039 INFO L225 Difference]: With dead ends: 189419 [2022-11-16 11:46:23,039 INFO L226 Difference]: Without dead ends: 107749 [2022-11-16 11:46:23,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4398 GetRequests, 4393 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:46:23,072 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 197 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:23,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1022 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:46:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107749 states. [2022-11-16 11:46:24,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107749 to 102023. [2022-11-16 11:46:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102023 states, 102022 states have (on average 1.012320871968791) internal successors, (103279), 102022 states have internal predecessors, (103279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102023 states to 102023 states and 103279 transitions. [2022-11-16 11:46:24,782 INFO L78 Accepts]: Start accepts. Automaton has 102023 states and 103279 transitions. Word has length 4394 [2022-11-16 11:46:24,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:24,784 INFO L495 AbstractCegarLoop]: Abstraction has 102023 states and 103279 transitions. [2022-11-16 11:46:24,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 3 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:24,785 INFO L276 IsEmpty]: Start isEmpty. Operand 102023 states and 103279 transitions. [2022-11-16 11:46:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4641 [2022-11-16 11:46:24,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:24,997 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:25,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:25,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:46:25,199 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:25,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1927036504, now seen corresponding path program 1 times [2022-11-16 11:46:25,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:25,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736878507] [2022-11-16 11:46:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:25,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 19778 backedges. 5702 proven. 89 refuted. 0 times theorem prover too weak. 13987 trivial. 0 not checked. [2022-11-16 11:46:36,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:36,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736878507] [2022-11-16 11:46:36,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736878507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:36,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113078904] [2022-11-16 11:46:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:36,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:36,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:36,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:36,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:46:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:38,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 5316 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:46:38,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 19778 backedges. 16775 proven. 57 refuted. 0 times theorem prover too weak. 2946 trivial. 0 not checked. [2022-11-16 11:47:29,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19778 backedges. 16775 proven. 57 refuted. 0 times theorem prover too weak. 2946 trivial. 0 not checked. [2022-11-16 11:48:28,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113078904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:28,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:28,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-11-16 11:48:28,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148970155] [2022-11-16 11:48:28,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:28,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:48:28,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:28,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:48:28,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:48:28,750 INFO L87 Difference]: Start difference. First operand 102023 states and 103279 transitions. Second operand has 14 states, 14 states have (on average 291.0) internal successors, (4074), 13 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:01,839 INFO L93 Difference]: Finished difference Result 229079 states and 231956 transitions. [2022-11-16 11:49:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:49:01,840 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 291.0) internal successors, (4074), 13 states have internal predecessors, (4074), 0 states have call successors, (0), 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 4640 [2022-11-16 11:49:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:01,973 INFO L225 Difference]: With dead ends: 229079 [2022-11-16 11:49:01,973 INFO L226 Difference]: Without dead ends: 141551 [2022-11-16 11:49:02,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9307 GetRequests, 9271 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=302, Invalid=1104, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:49:02,009 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 8215 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 46055 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8215 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 46322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 46055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:02,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8215 Valid, 476 Invalid, 46322 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [267 Valid, 46055 Invalid, 0 Unknown, 0 Unchecked, 31.0s Time] [2022-11-16 11:49:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141551 states. [2022-11-16 11:49:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141551 to 97115. [2022-11-16 11:49:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97115 states, 97114 states have (on average 1.0111003562823073) internal successors, (98192), 97114 states have internal predecessors, (98192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97115 states to 97115 states and 98192 transitions. [2022-11-16 11:49:03,897 INFO L78 Accepts]: Start accepts. Automaton has 97115 states and 98192 transitions. Word has length 4640 [2022-11-16 11:49:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:03,898 INFO L495 AbstractCegarLoop]: Abstraction has 97115 states and 98192 transitions. [2022-11-16 11:49:03,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 291.0) internal successors, (4074), 13 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 97115 states and 98192 transitions. [2022-11-16 11:49:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4959 [2022-11-16 11:49:04,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:04,482 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:04,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:49:04,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:04,695 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:04,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:04,701 INFO L85 PathProgramCache]: Analyzing trace with hash -17554853, now seen corresponding path program 1 times [2022-11-16 11:49:04,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:04,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911076803] [2022-11-16 11:49:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:04,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 22552 backedges. 6344 proven. 164 refuted. 0 times theorem prover too weak. 16044 trivial. 0 not checked. [2022-11-16 11:49:17,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:17,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911076803] [2022-11-16 11:49:17,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911076803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:17,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831966804] [2022-11-16 11:49:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:17,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:17,870 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:17,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:49:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:20,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 5665 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:49:20,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 22552 backedges. 13306 proven. 0 refuted. 0 times theorem prover too weak. 9246 trivial. 0 not checked. [2022-11-16 11:49:21,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:21,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831966804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:21,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:49:21,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 11:49:21,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331256849] [2022-11-16 11:49:21,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:21,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:21,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:21,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:21,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:49:21,629 INFO L87 Difference]: Start difference. First operand 97115 states and 98192 transitions. Second operand has 3 states, 3 states have (on average 624.3333333333334) internal successors, (1873), 3 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:25,338 INFO L93 Difference]: Finished difference Result 183007 states and 185095 transitions. [2022-11-16 11:49:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:25,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 624.3333333333334) internal successors, (1873), 3 states have internal predecessors, (1873), 0 states have call successors, (0), 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 4958 [2022-11-16 11:49:25,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:25,460 INFO L225 Difference]: With dead ends: 183007 [2022-11-16 11:49:25,461 INFO L226 Difference]: Without dead ends: 107749 [2022-11-16 11:49:25,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4962 GetRequests, 4959 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:49:25,503 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 453 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:25,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 856 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:49:25,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107749 states. [2022-11-16 11:49:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107749 to 99569. [2022-11-16 11:49:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99569 states, 99568 states have (on average 1.0100835609834484) internal successors, (100572), 99568 states have internal predecessors, (100572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99569 states to 99569 states and 100572 transitions. [2022-11-16 11:49:27,214 INFO L78 Accepts]: Start accepts. Automaton has 99569 states and 100572 transitions. Word has length 4958 [2022-11-16 11:49:27,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:27,217 INFO L495 AbstractCegarLoop]: Abstraction has 99569 states and 100572 transitions. [2022-11-16 11:49:27,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 624.3333333333334) internal successors, (1873), 3 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 99569 states and 100572 transitions. [2022-11-16 11:49:28,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5287 [2022-11-16 11:49:28,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:28,179 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-16 11:49:28,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:28,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1bc22-e7ff-4c25-a015-cefbffc00c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:28,381 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash 739856001, now seen corresponding path program 1 times [2022-11-16 11:49:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:28,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098882038] [2022-11-16 11:49:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat