./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN --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 d1b880f3deb97bdbbf7c11e97cbf5ecd616b00539f1d96d544b9d037b9f9e706 --- 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-6b4ec56 [2022-11-20 11:39:46,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:39:46,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:39:46,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:39:46,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:39:46,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:39:46,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:39:46,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:39:46,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:39:46,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:39:46,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:39:46,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:39:46,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:39:46,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:39:46,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:39:46,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:39:46,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:39:46,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:39:46,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:39:46,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:39:46,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:39:46,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:39:46,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:39:46,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:39:46,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:39:46,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:39:46,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:39:46,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:39:46,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:39:46,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:39:46,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:39:46,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:39:46,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:39:46,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:39:46,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:39:46,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:39:46,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:39:46,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:39:46,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:39:46,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:39:46,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:39:46,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:39:46,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:39:46,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:39:46,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:39:46,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:39:46,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:39:46,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:39:46,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:39:46,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:39:46,430 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:39:46,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:39:46,430 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:39:46,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:39:46,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:39:46,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:39:46,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:39:46,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:39:46,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:39:46,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:39:46,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:39:46,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:39:46,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:39:46,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:39:46,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:39:46,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:39:46,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:39:46,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:39:46,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:39:46,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:39:46,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:39:46,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:39:46,435 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:39:46,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:39:46,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:39:46,436 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_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1b880f3deb97bdbbf7c11e97cbf5ecd616b00539f1d96d544b9d037b9f9e706 [2022-11-20 11:39:46,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:39:46,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:39:46,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:39:46,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:39:46,728 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:39:46,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem18_label05.c [2022-11-20 11:39:49,793 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:39:50,324 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:39:50,324 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/sv-benchmarks/c/eca-rers2012/Problem18_label05.c [2022-11-20 11:39:50,347 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/data/9952c8e04/d0bb0a0e9cd4450fbef358fa7c5be48d/FLAGf7153b871 [2022-11-20 11:39:50,367 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/data/9952c8e04/d0bb0a0e9cd4450fbef358fa7c5be48d [2022-11-20 11:39:50,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:39:50,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:39:50,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:39:50,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:39:50,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:39:50,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:39:50" (1/1) ... [2022-11-20 11:39:50,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12dd6f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:50, skipping insertion in model container [2022-11-20 11:39:50,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:39:50" (1/1) ... [2022-11-20 11:39:50,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:39:50,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:39:50,796 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/sv-benchmarks/c/eca-rers2012/Problem18_label05.c[4165,4178] [2022-11-20 11:39:51,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:39:51,773 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:39:51,808 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/sv-benchmarks/c/eca-rers2012/Problem18_label05.c[4165,4178] [2022-11-20 11:39:52,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:39:52,208 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:39:52,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52 WrapperNode [2022-11-20 11:39:52,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:39:52,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:39:52,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:39:52,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:39:52,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,506 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-11-20 11:39:52,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:39:52,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:39:52,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:39:52,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:39:52,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:39:52,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:39:52,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:39:52,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:39:52,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (1/1) ... [2022-11-20 11:39:52,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:39:52,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:39:52,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:39:52,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:39:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:39:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:39:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:39:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:39:52,842 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:39:52,844 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:39:56,831 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:39:56,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:39:56,852 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:39:56,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:56 BoogieIcfgContainer [2022-11-20 11:39:56,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:39:56,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:39:56,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:39:56,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:39:56,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:39:50" (1/3) ... [2022-11-20 11:39:56,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d7059e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:39:56, skipping insertion in model container [2022-11-20 11:39:56,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:52" (2/3) ... [2022-11-20 11:39:56,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d7059e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:39:56, skipping insertion in model container [2022-11-20 11:39:56,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:56" (3/3) ... [2022-11-20 11:39:56,875 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label05.c [2022-11-20 11:39:56,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:39:56,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:39:56,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:39:57,001 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;@4f4c7c1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:39:57,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:39:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:39:57,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:57,018 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] [2022-11-20 11:39:57,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:57,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash 323974986, now seen corresponding path program 1 times [2022-11-20 11:39:57,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457058180] [2022-11-20 11:39:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:39:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:57,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457058180] [2022-11-20 11:39:57,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457058180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:57,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:57,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:39:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655164439] [2022-11-20 11:39:57,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:57,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:39:57,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:57,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:39:57,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:39:57,539 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:05,055 INFO L93 Difference]: Finished difference Result 2900 states and 5648 transitions. [2022-11-20 11:40:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:40:05,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-20 11:40:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:05,100 INFO L225 Difference]: With dead ends: 2900 [2022-11-20 11:40:05,101 INFO L226 Difference]: Without dead ends: 2074 [2022-11-20 11:40:05,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:05,118 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 2030 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 1069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 6331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1069 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:05,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 712 Invalid, 6331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1069 Valid, 5262 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-20 11:40:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2022-11-20 11:40:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2074. [2022-11-20 11:40:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 1.5533043897732755) internal successors, (3220), 2073 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3220 transitions. [2022-11-20 11:40:05,271 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3220 transitions. Word has length 38 [2022-11-20 11:40:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:05,272 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 3220 transitions. [2022-11-20 11:40:05,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3220 transitions. [2022-11-20 11:40:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 11:40:05,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:05,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:05,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:40:05,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:05,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1231066604, now seen corresponding path program 1 times [2022-11-20 11:40:05,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:05,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685526162] [2022-11-20 11:40:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:05,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:05,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685526162] [2022-11-20 11:40:05,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685526162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:05,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:05,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:05,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637183308] [2022-11-20 11:40:05,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:05,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:40:05,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:05,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:40:05,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:40:05,879 INFO L87 Difference]: Start difference. First operand 2074 states and 3220 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:11,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:11,527 INFO L93 Difference]: Finished difference Result 6906 states and 10855 transitions. [2022-11-20 11:40:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:40:11,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-20 11:40:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:11,548 INFO L225 Difference]: With dead ends: 6906 [2022-11-20 11:40:11,548 INFO L226 Difference]: Without dead ends: 4834 [2022-11-20 11:40:11,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:11,553 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1923 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 5000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:11,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 647 Invalid, 5000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 11:40:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-20 11:40:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4144. [2022-11-20 11:40:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.3376780111030655) internal successors, (5542), 4143 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5542 transitions. [2022-11-20 11:40:11,642 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5542 transitions. Word has length 131 [2022-11-20 11:40:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:11,643 INFO L495 AbstractCegarLoop]: Abstraction has 4144 states and 5542 transitions. [2022-11-20 11:40:11,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5542 transitions. [2022-11-20 11:40:11,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-20 11:40:11,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:11,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:40:11,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:11,648 INFO L85 PathProgramCache]: Analyzing trace with hash 768677073, now seen corresponding path program 1 times [2022-11-20 11:40:11,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:11,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963534420] [2022-11-20 11:40:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:11,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:11,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:11,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963534420] [2022-11-20 11:40:11,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963534420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:11,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:11,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562782020] [2022-11-20 11:40:11,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:11,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:11,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:40:11,956 INFO L87 Difference]: Start difference. First operand 4144 states and 5542 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:15,262 INFO L93 Difference]: Finished difference Result 9666 states and 13597 transitions. [2022-11-20 11:40:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:15,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2022-11-20 11:40:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:15,280 INFO L225 Difference]: With dead ends: 9666 [2022-11-20 11:40:15,280 INFO L226 Difference]: Without dead ends: 5524 [2022-11-20 11:40:15,285 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 [2022-11-20 11:40:15,286 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 678 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:15,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1070 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 11:40:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2022-11-20 11:40:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5524. [2022-11-20 11:40:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.3391272858953467) internal successors, (7396), 5523 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 7396 transitions. [2022-11-20 11:40:15,391 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 7396 transitions. Word has length 220 [2022-11-20 11:40:15,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:15,392 INFO L495 AbstractCegarLoop]: Abstraction has 5524 states and 7396 transitions. [2022-11-20 11:40:15,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 7396 transitions. [2022-11-20 11:40:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-20 11:40:15,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:15,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:40:15,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:40:15,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:15,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1804502542, now seen corresponding path program 1 times [2022-11-20 11:40:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:15,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860704600] [2022-11-20 11:40:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:15,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:15,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:15,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860704600] [2022-11-20 11:40:15,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860704600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:15,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:15,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979146268] [2022-11-20 11:40:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:15,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:40:15,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:40:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:40:15,908 INFO L87 Difference]: Start difference. First operand 5524 states and 7396 transitions. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:19,824 INFO L93 Difference]: Finished difference Result 13859 states and 18479 transitions. [2022-11-20 11:40:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:40:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 311 [2022-11-20 11:40:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:19,850 INFO L225 Difference]: With dead ends: 13859 [2022-11-20 11:40:19,850 INFO L226 Difference]: Without dead ends: 8284 [2022-11-20 11:40:19,857 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 [2022-11-20 11:40:19,858 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 515 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:19,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 637 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 11:40:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-11-20 11:40:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 7594. [2022-11-20 11:40:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.184775451073357) internal successors, (8996), 7593 states have internal predecessors, (8996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 8996 transitions. [2022-11-20 11:40:20,011 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 8996 transitions. Word has length 311 [2022-11-20 11:40:20,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:20,012 INFO L495 AbstractCegarLoop]: Abstraction has 7594 states and 8996 transitions. [2022-11-20 11:40:20,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:20,013 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 8996 transitions. [2022-11-20 11:40:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2022-11-20 11:40:20,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:20,048 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-20 11:40:20,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:40:20,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:20,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash -457200808, now seen corresponding path program 1 times [2022-11-20 11:40:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:20,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883018486] [2022-11-20 11:40:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 107 proven. 6 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-20 11:40:21,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:21,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883018486] [2022-11-20 11:40:21,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883018486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:40:21,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876217548] [2022-11-20 11:40:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:21,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:21,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:21,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:21,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:40:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:22,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:40:22,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-20 11:40:23,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:40:23,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876217548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:23,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:40:23,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-20 11:40:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022749362] [2022-11-20 11:40:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:23,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:23,802 INFO L87 Difference]: Start difference. First operand 7594 states and 8996 transitions. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 2 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:26,676 INFO L93 Difference]: Finished difference Result 18636 states and 22712 transitions. [2022-11-20 11:40:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:26,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 2 states have internal predecessors, (556), 0 states have call successors, (0), 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 921 [2022-11-20 11:40:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:26,708 INFO L225 Difference]: With dead ends: 18636 [2022-11-20 11:40:26,708 INFO L226 Difference]: Without dead ends: 11044 [2022-11-20 11:40:26,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:26,723 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 226 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:26,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 389 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:40:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2022-11-20 11:40:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 9664. [2022-11-20 11:40:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9664 states, 9663 states have (on average 1.1631998344199523) internal successors, (11240), 9663 states have internal predecessors, (11240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9664 states to 9664 states and 11240 transitions. [2022-11-20 11:40:26,922 INFO L78 Accepts]: Start accepts. Automaton has 9664 states and 11240 transitions. Word has length 921 [2022-11-20 11:40:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:26,929 INFO L495 AbstractCegarLoop]: Abstraction has 9664 states and 11240 transitions. [2022-11-20 11:40:26,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 2 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9664 states and 11240 transitions. [2022-11-20 11:40:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2022-11-20 11:40:26,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:26,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:26,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:40:27,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:27,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:27,186 INFO L85 PathProgramCache]: Analyzing trace with hash -324307351, now seen corresponding path program 1 times [2022-11-20 11:40:27,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:27,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204561110] [2022-11-20 11:40:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:27,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-20 11:40:29,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:29,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204561110] [2022-11-20 11:40:29,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204561110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:29,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:29,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411481767] [2022-11-20 11:40:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:40:29,045 INFO L87 Difference]: Start difference. First operand 9664 states and 11240 transitions. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:32,040 INFO L93 Difference]: Finished difference Result 24156 states and 28392 transitions. [2022-11-20 11:40:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:32,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 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 970 [2022-11-20 11:40:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:32,071 INFO L225 Difference]: With dead ends: 24156 [2022-11-20 11:40:32,071 INFO L226 Difference]: Without dead ends: 14494 [2022-11-20 11:40:32,079 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 [2022-11-20 11:40:32,080 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 574 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:32,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1092 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 11:40:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14494 states. [2022-11-20 11:40:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14494 to 13804. [2022-11-20 11:40:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13804 states, 13803 states have (on average 1.1448960370933854) internal successors, (15803), 13803 states have internal predecessors, (15803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13804 states to 13804 states and 15803 transitions. [2022-11-20 11:40:32,289 INFO L78 Accepts]: Start accepts. Automaton has 13804 states and 15803 transitions. Word has length 970 [2022-11-20 11:40:32,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:32,291 INFO L495 AbstractCegarLoop]: Abstraction has 13804 states and 15803 transitions. [2022-11-20 11:40:32,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:32,292 INFO L276 IsEmpty]: Start isEmpty. Operand 13804 states and 15803 transitions. [2022-11-20 11:40:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2022-11-20 11:40:32,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:32,304 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:32,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:40:32,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1419352883, now seen corresponding path program 1 times [2022-11-20 11:40:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:32,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632951496] [2022-11-20 11:40:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-20 11:40:33,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:33,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632951496] [2022-11-20 11:40:33,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632951496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:33,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:33,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:33,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506064891] [2022-11-20 11:40:33,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:33,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:40:33,142 INFO L87 Difference]: Start difference. First operand 13804 states and 15803 transitions. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:35,724 INFO L93 Difference]: Finished difference Result 27606 states and 31604 transitions. [2022-11-20 11:40:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:35,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 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 980 [2022-11-20 11:40:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:35,755 INFO L225 Difference]: With dead ends: 27606 [2022-11-20 11:40:35,755 INFO L226 Difference]: Without dead ends: 13804 [2022-11-20 11:40:35,769 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 [2022-11-20 11:40:35,770 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 590 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:35,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 150 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 11:40:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13804 states. [2022-11-20 11:40:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13804 to 13804. [2022-11-20 11:40:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13804 states, 13803 states have (on average 1.141708324277331) internal successors, (15759), 13803 states have internal predecessors, (15759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13804 states to 13804 states and 15759 transitions. [2022-11-20 11:40:36,091 INFO L78 Accepts]: Start accepts. Automaton has 13804 states and 15759 transitions. Word has length 980 [2022-11-20 11:40:36,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:36,093 INFO L495 AbstractCegarLoop]: Abstraction has 13804 states and 15759 transitions. [2022-11-20 11:40:36,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13804 states and 15759 transitions. [2022-11-20 11:40:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2022-11-20 11:40:36,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:36,114 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:40:36,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:40:36,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:36,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash -943170993, now seen corresponding path program 1 times [2022-11-20 11:40:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:36,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678630019] [2022-11-20 11:40:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2022-11-20 11:40:37,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:37,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678630019] [2022-11-20 11:40:37,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678630019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:37,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:37,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:40:37,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589149154] [2022-11-20 11:40:37,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:37,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:37,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:40:37,166 INFO L87 Difference]: Start difference. First operand 13804 states and 15759 transitions. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 2 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:39,826 INFO L93 Difference]: Finished difference Result 32436 states and 37139 transitions. [2022-11-20 11:40:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:39,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 2 states have internal predecessors, (591), 0 states have call successors, (0), 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 1007 [2022-11-20 11:40:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:39,864 INFO L225 Difference]: With dead ends: 32436 [2022-11-20 11:40:39,864 INFO L226 Difference]: Without dead ends: 18634 [2022-11-20 11:40:39,878 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 [2022-11-20 11:40:39,879 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 249 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:39,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 77 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 11:40:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2022-11-20 11:40:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 18634. [2022-11-20 11:40:40,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18634 states, 18633 states have (on average 1.1297697633231363) internal successors, (21051), 18633 states have internal predecessors, (21051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18634 states to 18634 states and 21051 transitions. [2022-11-20 11:40:40,144 INFO L78 Accepts]: Start accepts. Automaton has 18634 states and 21051 transitions. Word has length 1007 [2022-11-20 11:40:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:40,145 INFO L495 AbstractCegarLoop]: Abstraction has 18634 states and 21051 transitions. [2022-11-20 11:40:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 2 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 18634 states and 21051 transitions. [2022-11-20 11:40:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2022-11-20 11:40:40,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:40,159 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:40:40,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:40:40,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash 684101105, now seen corresponding path program 1 times [2022-11-20 11:40:40,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:40,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312244251] [2022-11-20 11:40:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:40,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-11-20 11:40:41,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:41,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312244251] [2022-11-20 11:40:41,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312244251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:41,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:41,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:40:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914528182] [2022-11-20 11:40:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:41,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:40:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:41,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:40:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:41,915 INFO L87 Difference]: Start difference. First operand 18634 states and 21051 transitions. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:45,487 INFO L93 Difference]: Finished difference Result 40113 states and 44992 transitions. [2022-11-20 11:40:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:40:45,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 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 1047 [2022-11-20 11:40:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:45,522 INFO L225 Difference]: With dead ends: 40113 [2022-11-20 11:40:45,523 INFO L226 Difference]: Without dead ends: 18721 [2022-11-20 11:40:45,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:45,539 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 725 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 4016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:45,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1091 Invalid, 4016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 11:40:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18721 states. [2022-11-20 11:40:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18721 to 17944. [2022-11-20 11:40:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17943 states have (on average 1.0620297609095468) internal successors, (19056), 17943 states have internal predecessors, (19056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 19056 transitions. [2022-11-20 11:40:45,854 INFO L78 Accepts]: Start accepts. Automaton has 17944 states and 19056 transitions. Word has length 1047 [2022-11-20 11:40:45,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:45,856 INFO L495 AbstractCegarLoop]: Abstraction has 17944 states and 19056 transitions. [2022-11-20 11:40:45,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:45,856 INFO L276 IsEmpty]: Start isEmpty. Operand 17944 states and 19056 transitions. [2022-11-20 11:40:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2022-11-20 11:40:45,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:45,874 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:45,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:40:45,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:45,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash -317971080, now seen corresponding path program 1 times [2022-11-20 11:40:45,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:45,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464928703] [2022-11-20 11:40:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:45,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2022-11-20 11:40:46,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:46,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464928703] [2022-11-20 11:40:46,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464928703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:46,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:46,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:46,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420241492] [2022-11-20 11:40:46,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:46,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:46,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:46,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:40:46,808 INFO L87 Difference]: Start difference. First operand 17944 states and 19056 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:49,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:49,280 INFO L93 Difference]: Finished difference Result 40716 states and 43516 transitions. [2022-11-20 11:40:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:49,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 1093 [2022-11-20 11:40:49,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:49,311 INFO L225 Difference]: With dead ends: 40716 [2022-11-20 11:40:49,311 INFO L226 Difference]: Without dead ends: 22084 [2022-11-20 11:40:49,323 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 [2022-11-20 11:40:49,323 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:49,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 994 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 11:40:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22084 states. [2022-11-20 11:40:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22084 to 22084. [2022-11-20 11:40:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22084 states, 22083 states have (on average 1.062491509305801) internal successors, (23463), 22083 states have internal predecessors, (23463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22084 states to 22084 states and 23463 transitions. [2022-11-20 11:40:49,614 INFO L78 Accepts]: Start accepts. Automaton has 22084 states and 23463 transitions. Word has length 1093 [2022-11-20 11:40:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:49,615 INFO L495 AbstractCegarLoop]: Abstraction has 22084 states and 23463 transitions. [2022-11-20 11:40:49,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 22084 states and 23463 transitions. [2022-11-20 11:40:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2022-11-20 11:40:49,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:49,631 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:49,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:40:49,632 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:49,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash 848399170, now seen corresponding path program 1 times [2022-11-20 11:40:49,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:49,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229731957] [2022-11-20 11:40:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-20 11:40:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:50,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229731957] [2022-11-20 11:40:50,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229731957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:50,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:50,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680869314] [2022-11-20 11:40:50,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:50,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:50,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:50,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:40:50,553 INFO L87 Difference]: Start difference. First operand 22084 states and 23463 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:52,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:52,775 INFO L93 Difference]: Finished difference Result 48306 states and 51410 transitions. [2022-11-20 11:40:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:52,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 1112 [2022-11-20 11:40:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:52,816 INFO L225 Difference]: With dead ends: 48306 [2022-11-20 11:40:52,816 INFO L226 Difference]: Without dead ends: 26224 [2022-11-20 11:40:52,831 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 [2022-11-20 11:40:52,832 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 627 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:52,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 230 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 11:40:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26224 states. [2022-11-20 11:40:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26224 to 25534. [2022-11-20 11:40:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25534 states, 25533 states have (on average 1.0600791133043512) internal successors, (27067), 25533 states have internal predecessors, (27067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25534 states to 25534 states and 27067 transitions. [2022-11-20 11:40:53,280 INFO L78 Accepts]: Start accepts. Automaton has 25534 states and 27067 transitions. Word has length 1112 [2022-11-20 11:40:53,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:53,281 INFO L495 AbstractCegarLoop]: Abstraction has 25534 states and 27067 transitions. [2022-11-20 11:40:53,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:53,282 INFO L276 IsEmpty]: Start isEmpty. Operand 25534 states and 27067 transitions. [2022-11-20 11:40:53,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2022-11-20 11:40:53,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:53,298 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:40:53,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:40:53,299 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:53,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:53,299 INFO L85 PathProgramCache]: Analyzing trace with hash -627551852, now seen corresponding path program 1 times [2022-11-20 11:40:53,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:53,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073823520] [2022-11-20 11:40:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:53,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 742 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-11-20 11:40:54,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:54,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073823520] [2022-11-20 11:40:54,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073823520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:54,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:54,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:54,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647128655] [2022-11-20 11:40:54,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:54,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:40:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:40:54,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:40:54,848 INFO L87 Difference]: Start difference. First operand 25534 states and 27067 transitions. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:58,151 INFO L93 Difference]: Finished difference Result 51756 states and 54823 transitions. [2022-11-20 11:40:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:40:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 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 1118 [2022-11-20 11:40:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:58,185 INFO L225 Difference]: With dead ends: 51756 [2022-11-20 11:40:58,185 INFO L226 Difference]: Without dead ends: 26224 [2022-11-20 11:40:58,201 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 [2022-11-20 11:40:58,202 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1001 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:58,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 76 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 11:40:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26224 states. [2022-11-20 11:40:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26224 to 25534. [2022-11-20 11:40:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25534 states, 25533 states have (on average 1.059922453295735) internal successors, (27063), 25533 states have internal predecessors, (27063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25534 states to 25534 states and 27063 transitions. [2022-11-20 11:40:58,664 INFO L78 Accepts]: Start accepts. Automaton has 25534 states and 27063 transitions. Word has length 1118 [2022-11-20 11:40:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:58,665 INFO L495 AbstractCegarLoop]: Abstraction has 25534 states and 27063 transitions. [2022-11-20 11:40:58,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:58,665 INFO L276 IsEmpty]: Start isEmpty. Operand 25534 states and 27063 transitions. [2022-11-20 11:40:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1124 [2022-11-20 11:40:58,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:58,691 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:58,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:40:58,691 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:58,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1653159265, now seen corresponding path program 1 times [2022-11-20 11:40:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:58,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345445441] [2022-11-20 11:40:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:58,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2022-11-20 11:41:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:00,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345445441] [2022-11-20 11:41:00,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345445441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:00,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:00,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051711062] [2022-11-20 11:41:00,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:00,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:00,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:00,311 INFO L87 Difference]: Start difference. First operand 25534 states and 27063 transitions. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:02,400 INFO L93 Difference]: Finished difference Result 51066 states and 54124 transitions. [2022-11-20 11:41:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:02,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 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 1123 [2022-11-20 11:41:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:02,436 INFO L225 Difference]: With dead ends: 51066 [2022-11-20 11:41:02,436 INFO L226 Difference]: Without dead ends: 25534 [2022-11-20 11:41:02,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:02,452 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 759 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:02,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 746 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 11:41:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25534 states. [2022-11-20 11:41:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25534 to 25534. [2022-11-20 11:41:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25534 states, 25533 states have (on average 1.053695217953237) internal successors, (26904), 25533 states have internal predecessors, (26904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25534 states to 25534 states and 26904 transitions. [2022-11-20 11:41:02,779 INFO L78 Accepts]: Start accepts. Automaton has 25534 states and 26904 transitions. Word has length 1123 [2022-11-20 11:41:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:02,780 INFO L495 AbstractCegarLoop]: Abstraction has 25534 states and 26904 transitions. [2022-11-20 11:41:02,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:02,780 INFO L276 IsEmpty]: Start isEmpty. Operand 25534 states and 26904 transitions. [2022-11-20 11:41:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2022-11-20 11:41:02,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:02,796 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:02,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:41:02,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash -856351968, now seen corresponding path program 1 times [2022-11-20 11:41:02,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:02,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280480681] [2022-11-20 11:41:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:02,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-20 11:41:03,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:03,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280480681] [2022-11-20 11:41:03,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280480681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:03,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:03,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131303782] [2022-11-20 11:41:03,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:03,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:03,572 INFO L87 Difference]: Start difference. First operand 25534 states and 26904 transitions. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:05,747 INFO L93 Difference]: Finished difference Result 60726 states and 64064 transitions. [2022-11-20 11:41:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:05,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 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 1133 [2022-11-20 11:41:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:05,777 INFO L225 Difference]: With dead ends: 60726 [2022-11-20 11:41:05,777 INFO L226 Difference]: Without dead ends: 31054 [2022-11-20 11:41:05,794 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 [2022-11-20 11:41:05,795 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 617 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:05,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 939 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 11:41:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2022-11-20 11:41:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 31054. [2022-11-20 11:41:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31054 states, 31053 states have (on average 1.0490129778121275) internal successors, (32575), 31053 states have internal predecessors, (32575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31054 states to 31054 states and 32575 transitions. [2022-11-20 11:41:06,160 INFO L78 Accepts]: Start accepts. Automaton has 31054 states and 32575 transitions. Word has length 1133 [2022-11-20 11:41:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:06,160 INFO L495 AbstractCegarLoop]: Abstraction has 31054 states and 32575 transitions. [2022-11-20 11:41:06,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand 31054 states and 32575 transitions. [2022-11-20 11:41:06,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1329 [2022-11-20 11:41:06,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:06,191 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:06,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:41:06,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash -951363455, now seen corresponding path program 1 times [2022-11-20 11:41:06,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:06,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708010856] [2022-11-20 11:41:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:06,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2019 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 1355 trivial. 0 not checked. [2022-11-20 11:41:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:07,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708010856] [2022-11-20 11:41:07,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708010856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:07,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:07,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550035379] [2022-11-20 11:41:07,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:07,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:07,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:07,937 INFO L87 Difference]: Start difference. First operand 31054 states and 32575 transitions. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:10,393 INFO L93 Difference]: Finished difference Result 67626 states and 71193 transitions. [2022-11-20 11:41:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:10,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 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 1328 [2022-11-20 11:41:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:10,432 INFO L225 Difference]: With dead ends: 67626 [2022-11-20 11:41:10,432 INFO L226 Difference]: Without dead ends: 36574 [2022-11-20 11:41:10,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:10,452 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 631 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:10,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 792 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:41:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36574 states. [2022-11-20 11:41:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36574 to 35194. [2022-11-20 11:41:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35194 states, 35193 states have (on average 1.0493564061034866) internal successors, (36930), 35193 states have internal predecessors, (36930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35194 states to 35194 states and 36930 transitions. [2022-11-20 11:41:10,825 INFO L78 Accepts]: Start accepts. Automaton has 35194 states and 36930 transitions. Word has length 1328 [2022-11-20 11:41:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:10,826 INFO L495 AbstractCegarLoop]: Abstraction has 35194 states and 36930 transitions. [2022-11-20 11:41:10,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 35194 states and 36930 transitions. [2022-11-20 11:41:10,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2022-11-20 11:41:10,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:10,851 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:10,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:41:10,851 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:10,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1797577173, now seen corresponding path program 1 times [2022-11-20 11:41:10,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:10,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071533599] [2022-11-20 11:41:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:10,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 789 proven. 1067 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-20 11:41:12,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071533599] [2022-11-20 11:41:12,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071533599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:12,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166762825] [2022-11-20 11:41:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:12,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:12,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:12,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:12,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:41:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:13,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:41:13,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 1152 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2022-11-20 11:41:13,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:41:13,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166762825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:13,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:41:13,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-20 11:41:13,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419666808] [2022-11-20 11:41:13,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:13,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:13,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:13,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:41:13,846 INFO L87 Difference]: Start difference. First operand 35194 states and 36930 transitions. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:16,206 INFO L93 Difference]: Finished difference Result 84876 states and 89405 transitions. [2022-11-20 11:41:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:16,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 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 1335 [2022-11-20 11:41:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:16,255 INFO L225 Difference]: With dead ends: 84876 [2022-11-20 11:41:16,255 INFO L226 Difference]: Without dead ends: 50374 [2022-11-20 11:41:16,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1341 GetRequests, 1335 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:41:16,273 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 560 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:16,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 125 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:41:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50374 states. [2022-11-20 11:41:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50374 to 49684. [2022-11-20 11:41:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49684 states, 49683 states have (on average 1.0423082342048589) internal successors, (51785), 49683 states have internal predecessors, (51785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49684 states to 49684 states and 51785 transitions. [2022-11-20 11:41:16,763 INFO L78 Accepts]: Start accepts. Automaton has 49684 states and 51785 transitions. Word has length 1335 [2022-11-20 11:41:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:16,764 INFO L495 AbstractCegarLoop]: Abstraction has 49684 states and 51785 transitions. [2022-11-20 11:41:16,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 49684 states and 51785 transitions. [2022-11-20 11:41:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1470 [2022-11-20 11:41:16,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:16,791 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:41:16,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:16,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:41:16,992 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:16,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:16,993 INFO L85 PathProgramCache]: Analyzing trace with hash 956019788, now seen corresponding path program 1 times [2022-11-20 11:41:16,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:16,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139920656] [2022-11-20 11:41:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:16,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1360 proven. 0 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2022-11-20 11:41:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:18,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139920656] [2022-11-20 11:41:18,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139920656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:18,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:18,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944063508] [2022-11-20 11:41:18,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:18,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:18,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:18,104 INFO L87 Difference]: Start difference. First operand 49684 states and 51785 transitions. Second operand has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:20,548 INFO L93 Difference]: Finished difference Result 100056 states and 104259 transitions. [2022-11-20 11:41:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:20,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 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 1469 [2022-11-20 11:41:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:20,600 INFO L225 Difference]: With dead ends: 100056 [2022-11-20 11:41:20,601 INFO L226 Difference]: Without dead ends: 49684 [2022-11-20 11:41:20,622 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 [2022-11-20 11:41:20,623 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 561 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:20,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 948 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:41:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49684 states. [2022-11-20 11:41:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49684 to 48994. [2022-11-20 11:41:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48994 states, 48993 states have (on average 1.0328618374053435) internal successors, (50603), 48993 states have internal predecessors, (50603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48994 states to 48994 states and 50603 transitions. [2022-11-20 11:41:21,052 INFO L78 Accepts]: Start accepts. Automaton has 48994 states and 50603 transitions. Word has length 1469 [2022-11-20 11:41:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:21,052 INFO L495 AbstractCegarLoop]: Abstraction has 48994 states and 50603 transitions. [2022-11-20 11:41:21,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 48994 states and 50603 transitions. [2022-11-20 11:41:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1969 [2022-11-20 11:41:21,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:21,106 INFO L195 NwaCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:21,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:41:21,106 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:21,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1670646003, now seen corresponding path program 1 times [2022-11-20 11:41:21,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:21,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221661118] [2022-11-20 11:41:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:21,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4111 backedges. 2766 proven. 0 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2022-11-20 11:41:23,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:23,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221661118] [2022-11-20 11:41:23,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221661118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:23,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:23,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661376102] [2022-11-20 11:41:23,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:23,070 INFO L87 Difference]: Start difference. First operand 48994 states and 50603 transitions. Second operand has 3 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:25,650 INFO L93 Difference]: Finished difference Result 123516 states and 127744 transitions. [2022-11-20 11:41:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:25,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 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 1968 [2022-11-20 11:41:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:25,719 INFO L225 Difference]: With dead ends: 123516 [2022-11-20 11:41:25,719 INFO L226 Difference]: Without dead ends: 74524 [2022-11-20 11:41:25,853 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 [2022-11-20 11:41:25,854 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 545 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:25,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 892 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 11:41:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74524 states. [2022-11-20 11:41:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74524 to 73144. [2022-11-20 11:41:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73144 states, 73143 states have (on average 1.02953119232189) internal successors, (75303), 73143 states have internal predecessors, (75303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73144 states to 73144 states and 75303 transitions. [2022-11-20 11:41:26,780 INFO L78 Accepts]: Start accepts. Automaton has 73144 states and 75303 transitions. Word has length 1968 [2022-11-20 11:41:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:26,781 INFO L495 AbstractCegarLoop]: Abstraction has 73144 states and 75303 transitions. [2022-11-20 11:41:26,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 73144 states and 75303 transitions. [2022-11-20 11:41:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1992 [2022-11-20 11:41:26,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:26,877 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 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, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:41:26,877 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1286781296, now seen corresponding path program 1 times [2022-11-20 11:41:26,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:26,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647936753] [2022-11-20 11:41:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:26,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3776 backedges. 1659 proven. 0 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2022-11-20 11:41:29,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:29,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647936753] [2022-11-20 11:41:29,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647936753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:29,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:29,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:29,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155847905] [2022-11-20 11:41:29,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:29,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:29,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:29,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:29,529 INFO L87 Difference]: Start difference. First operand 73144 states and 75303 transitions. Second operand has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:32,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:32,169 INFO L93 Difference]: Finished difference Result 156636 states and 161510 transitions. [2022-11-20 11:41:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:32,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 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 1991 [2022-11-20 11:41:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:32,246 INFO L225 Difference]: With dead ends: 156636 [2022-11-20 11:41:32,246 INFO L226 Difference]: Without dead ends: 84184 [2022-11-20 11:41:32,277 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 [2022-11-20 11:41:32,277 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 155 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:32,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 260 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 11:41:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84184 states. [2022-11-20 11:41:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84184 to 82114. [2022-11-20 11:41:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82114 states, 82113 states have (on average 1.0281076078087514) internal successors, (84421), 82113 states have internal predecessors, (84421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82114 states to 82114 states and 84421 transitions. [2022-11-20 11:41:33,455 INFO L78 Accepts]: Start accepts. Automaton has 82114 states and 84421 transitions. Word has length 1991 [2022-11-20 11:41:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:33,457 INFO L495 AbstractCegarLoop]: Abstraction has 82114 states and 84421 transitions. [2022-11-20 11:41:33,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 82114 states and 84421 transitions. [2022-11-20 11:41:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2021 [2022-11-20 11:41:33,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:33,578 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:41:33,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:41:33,579 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1862890488, now seen corresponding path program 1 times [2022-11-20 11:41:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:33,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693741241] [2022-11-20 11:41:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3552 backedges. 1690 proven. 0 refuted. 0 times theorem prover too weak. 1862 trivial. 0 not checked. [2022-11-20 11:41:36,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:36,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693741241] [2022-11-20 11:41:36,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693741241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:36,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:36,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:41:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65790348] [2022-11-20 11:41:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:36,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:41:36,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:41:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:41:36,248 INFO L87 Difference]: Start difference. First operand 82114 states and 84421 transitions. Second operand has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:39,675 INFO L93 Difference]: Finished difference Result 189085 states and 194585 transitions. [2022-11-20 11:41:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:41:39,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 2020 [2022-11-20 11:41:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:39,801 INFO L225 Difference]: With dead ends: 189085 [2022-11-20 11:41:39,801 INFO L226 Difference]: Without dead ends: 107644 [2022-11-20 11:41:39,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:41:39,844 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 187 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:39,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 141 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:41:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107644 states. [2022-11-20 11:41:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107644 to 106264. [2022-11-20 11:41:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106264 states, 106263 states have (on average 1.0269519964616094) internal successors, (109127), 106263 states have internal predecessors, (109127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106264 states to 106264 states and 109127 transitions. [2022-11-20 11:41:41,563 INFO L78 Accepts]: Start accepts. Automaton has 106264 states and 109127 transitions. Word has length 2020 [2022-11-20 11:41:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:41,578 INFO L495 AbstractCegarLoop]: Abstraction has 106264 states and 109127 transitions. [2022-11-20 11:41:41,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 106264 states and 109127 transitions. [2022-11-20 11:41:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2084 [2022-11-20 11:41:41,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:41,666 INFO L195 NwaCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:41:41,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:41:41,666 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:41,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1789891251, now seen corresponding path program 1 times [2022-11-20 11:41:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:41,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024540696] [2022-11-20 11:41:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:41,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4181 backedges. 2389 proven. 1429 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-20 11:41:44,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:44,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024540696] [2022-11-20 11:41:44,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024540696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:44,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050217759] [2022-11-20 11:41:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:44,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:44,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:44,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:44,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:41:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:45,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2389 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:41:45,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4181 backedges. 3079 proven. 0 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-11-20 11:41:46,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:41:46,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050217759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:46,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:41:46,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-20 11:41:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644226472] [2022-11-20 11:41:46,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:46,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:46,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:46,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:41:46,417 INFO L87 Difference]: Start difference. First operand 106264 states and 109127 transitions. Second operand has 3 states, 3 states have (on average 469.6666666666667) internal successors, (1409), 3 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:49,104 INFO L93 Difference]: Finished difference Result 211836 states and 217561 transitions. [2022-11-20 11:41:49,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:49,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 469.6666666666667) internal successors, (1409), 3 states have internal predecessors, (1409), 0 states have call successors, (0), 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 2083 [2022-11-20 11:41:49,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:49,211 INFO L225 Difference]: With dead ends: 211836 [2022-11-20 11:41:49,211 INFO L226 Difference]: Without dead ends: 106264 [2022-11-20 11:41:49,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2089 GetRequests, 2083 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:41:49,259 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 415 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:49,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 886 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 11:41:49,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106264 states. [2022-11-20 11:41:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106264 to 104194. [2022-11-20 11:41:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104194 states, 104193 states have (on average 1.0192431353353872) internal successors, (106198), 104193 states have internal predecessors, (106198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104194 states to 104194 states and 106198 transitions. [2022-11-20 11:41:50,853 INFO L78 Accepts]: Start accepts. Automaton has 104194 states and 106198 transitions. Word has length 2083 [2022-11-20 11:41:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:50,854 INFO L495 AbstractCegarLoop]: Abstraction has 104194 states and 106198 transitions. [2022-11-20 11:41:50,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 469.6666666666667) internal successors, (1409), 3 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 104194 states and 106198 transitions. [2022-11-20 11:41:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2143 [2022-11-20 11:41:50,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:50,937 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:50,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 11:41:51,138 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:51,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1027350488, now seen corresponding path program 1 times [2022-11-20 11:41:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:51,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753015721] [2022-11-20 11:41:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4221 backedges. 2477 proven. 1038 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2022-11-20 11:41:54,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:54,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753015721] [2022-11-20 11:41:54,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753015721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:54,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395181936] [2022-11-20 11:41:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:54,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:54,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:54,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:54,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:41:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:55,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:41:55,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4221 backedges. 2817 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-20 11:41:55,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:41:55,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395181936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:55,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:41:55,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 11:41:55,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624774308] [2022-11-20 11:41:55,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:55,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:55,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:41:55,860 INFO L87 Difference]: Start difference. First operand 104194 states and 106198 transitions. Second operand has 3 states, 3 states have (on average 469.3333333333333) internal successors, (1408), 3 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:58,421 INFO L93 Difference]: Finished difference Result 208386 states and 212394 transitions. [2022-11-20 11:41:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:58,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 469.3333333333333) internal successors, (1408), 3 states have internal predecessors, (1408), 0 states have call successors, (0), 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 2142 [2022-11-20 11:41:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:58,525 INFO L225 Difference]: With dead ends: 208386 [2022-11-20 11:41:58,525 INFO L226 Difference]: Without dead ends: 104884 [2022-11-20 11:41:58,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2147 GetRequests, 2142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:41:58,564 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 353 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:58,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 940 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 11:41:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104884 states. [2022-11-20 11:41:59,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104884 to 104194. [2022-11-20 11:41:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104194 states, 104193 states have (on average 1.0182353900933845) internal successors, (106093), 104193 states have internal predecessors, (106093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104194 states to 104194 states and 106093 transitions. [2022-11-20 11:42:00,162 INFO L78 Accepts]: Start accepts. Automaton has 104194 states and 106093 transitions. Word has length 2142 [2022-11-20 11:42:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:00,164 INFO L495 AbstractCegarLoop]: Abstraction has 104194 states and 106093 transitions. [2022-11-20 11:42:00,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 469.3333333333333) internal successors, (1408), 3 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 104194 states and 106093 transitions. [2022-11-20 11:42:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2197 [2022-11-20 11:42:00,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:00,270 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:42:00,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:42:00,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 11:42:00,478 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 87446380, now seen corresponding path program 1 times [2022-11-20 11:42:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:00,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604634902] [2022-11-20 11:42:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4680 backedges. 3001 proven. 1340 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-20 11:42:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604634902] [2022-11-20 11:42:05,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604634902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:42:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357546539] [2022-11-20 11:42:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:42:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:42:05,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:42:05,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:42:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:05,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:42:05,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:42:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4680 backedges. 1864 proven. 0 refuted. 0 times theorem prover too weak. 2816 trivial. 0 not checked. [2022-11-20 11:42:08,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:42:08,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357546539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:08,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:42:08,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-20 11:42:08,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304328258] [2022-11-20 11:42:08,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:08,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:08,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:08,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:08,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:42:08,236 INFO L87 Difference]: Start difference. First operand 104194 states and 106093 transitions. Second operand has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:11,068 INFO L93 Difference]: Finished difference Result 213216 states and 217121 transitions. [2022-11-20 11:42:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:11,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 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 2196 [2022-11-20 11:42:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:11,184 INFO L225 Difference]: With dead ends: 213216 [2022-11-20 11:42:11,184 INFO L226 Difference]: Without dead ends: 109714 [2022-11-20 11:42:11,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2204 GetRequests, 2196 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:42:11,221 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 151 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:11,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 264 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:42:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109714 states. [2022-11-20 11:42:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109714 to 107644. [2022-11-20 11:42:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107644 states, 107643 states have (on average 1.0177345484611169) internal successors, (109552), 107643 states have internal predecessors, (109552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107644 states to 107644 states and 109552 transitions. [2022-11-20 11:42:12,546 INFO L78 Accepts]: Start accepts. Automaton has 107644 states and 109552 transitions. Word has length 2196 [2022-11-20 11:42:12,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:12,547 INFO L495 AbstractCegarLoop]: Abstraction has 107644 states and 109552 transitions. [2022-11-20 11:42:12,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 107644 states and 109552 transitions. [2022-11-20 11:42:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2244 [2022-11-20 11:42:12,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:12,641 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:12,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:42:12,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56cbf1d0-8611-4d47-a022-7fd8cb6fdc04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 11:42:12,842 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1621739017, now seen corresponding path program 1 times [2022-11-20 11:42:12,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:12,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739991083] [2022-11-20 11:42:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:12,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4515 backedges. 3019 proven. 0 refuted. 0 times theorem prover too weak. 1496 trivial. 0 not checked. [2022-11-20 11:42:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:16,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739991083] [2022-11-20 11:42:16,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739991083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:16,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:16,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:42:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887469993] [2022-11-20 11:42:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:16,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:16,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:16,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:16,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:16,784 INFO L87 Difference]: Start difference. First operand 107644 states and 109552 transitions. Second operand has 3 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:19,484 INFO L93 Difference]: Finished difference Result 215976 states and 219804 transitions. [2022-11-20 11:42:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 0 states have call successors, (0), 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 2243 [2022-11-20 11:42:19,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:19,599 INFO L225 Difference]: With dead ends: 215976 [2022-11-20 11:42:19,599 INFO L226 Difference]: Without dead ends: 109024 [2022-11-20 11:42:19,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:19,637 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 327 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:19,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 76 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 11:42:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109024 states. [2022-11-20 11:42:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109024 to 107644. [2022-11-20 11:42:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107644 states, 107643 states have (on average 1.0163224733610174) internal successors, (109400), 107643 states have internal predecessors, (109400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:21,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107644 states to 107644 states and 109400 transitions. [2022-11-20 11:42:21,007 INFO L78 Accepts]: Start accepts. Automaton has 107644 states and 109400 transitions. Word has length 2243 [2022-11-20 11:42:21,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:21,008 INFO L495 AbstractCegarLoop]: Abstraction has 107644 states and 109400 transitions. [2022-11-20 11:42:21,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 107644 states and 109400 transitions. [2022-11-20 11:42:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2342 [2022-11-20 11:42:21,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:21,106 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:21,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:42:21,107 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:21,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1962134210, now seen corresponding path program 1 times [2022-11-20 11:42:21,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:21,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141286346] [2022-11-20 11:42:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:21,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4886 backedges. 3008 proven. 0 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2022-11-20 11:42:23,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:23,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141286346] [2022-11-20 11:42:23,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141286346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:23,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:23,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:42:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774384999] [2022-11-20 11:42:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:23,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:23,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:23,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:23,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:23,347 INFO L87 Difference]: Start difference. First operand 107644 states and 109400 transitions. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)