./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label19.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_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/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_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/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_da18a95a-c835-438d-94e1-d3e88610a9ea/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 a964c9c76c4af918501d56362d39292d13dbbfa4832d6b5721a3773b73fa584b --- 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 11:23:11,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:23:11,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:23:11,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:23:11,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:23:11,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:23:11,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:23:11,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:23:11,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:23:11,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:23:11,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:23:11,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:23:11,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:23:11,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:23:11,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:23:11,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:23:11,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:23:11,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:23:11,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:23:11,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:23:11,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:23:11,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:23:11,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:23:11,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:23:11,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:23:11,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:23:11,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:23:11,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:23:11,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:23:11,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:23:11,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:23:11,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:23:11,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:23:11,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:23:11,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:23:11,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:23:11,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:23:11,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:23:11,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:23:11,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:23:11,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:23:11,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:23:11,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:23:11,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:23:11,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:23:11,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:23:11,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:23:11,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:23:11,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:23:11,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:23:11,504 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:23:11,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:23:11,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:23:11,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:23:11,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:23:11,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:23:11,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:23:11,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:23:11,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:23:11,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:23:11,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:23:11,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:23:11,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:23:11,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:23:11,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:23:11,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:23:11,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:23:11,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:23:11,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:23:11,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:23:11,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:23:11,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:23:11,513 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:23:11,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:23:11,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:23:11,514 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_da18a95a-c835-438d-94e1-d3e88610a9ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a964c9c76c4af918501d56362d39292d13dbbfa4832d6b5721a3773b73fa584b [2022-11-20 11:23:11,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:23:11,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:23:11,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:23:11,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:23:11,846 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:23:11,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2022-11-20 11:23:15,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:23:15,684 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:23:15,685 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2022-11-20 11:23:15,725 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/data/62895159d/da7e289157b64f44a023566305c6c662/FLAGe9e451a4b [2022-11-20 11:23:15,747 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/data/62895159d/da7e289157b64f44a023566305c6c662 [2022-11-20 11:23:15,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:23:15,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:23:15,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:15,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:23:15,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:23:15,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:15" (1/1) ... [2022-11-20 11:23:15,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5918451d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:15, skipping insertion in model container [2022-11-20 11:23:15,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:15" (1/1) ... [2022-11-20 11:23:15,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:23:15,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:23:16,327 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_da18a95a-c835-438d-94e1-d3e88610a9ea/sv-benchmarks/c/eca-rers2012/Problem13_label19.c[2731,2744] [2022-11-20 11:23:17,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:17,671 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:23:17,702 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_da18a95a-c835-438d-94e1-d3e88610a9ea/sv-benchmarks/c/eca-rers2012/Problem13_label19.c[2731,2744] [2022-11-20 11:23:18,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:18,503 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:23:18,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18 WrapperNode [2022-11-20 11:23:18,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:18,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:23:18,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:23:18,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:23:18,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:18,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:19,319 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-20 11:23:19,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:23:19,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:23:19,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:23:19,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:23:19,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:19,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:19,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:19,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:19,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:19,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:19,942 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:19,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:20,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:23:20,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:23:20,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:23:20,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:23:20,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:20,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:23:20,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:23:20,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:23:20,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:23:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:23:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:23:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:23:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:23:20,479 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:23:20,481 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:23:27,567 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:23:27,602 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:23:27,602 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:23:27,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:23:27 BoogieIcfgContainer [2022-11-20 11:23:27,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:23:27,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:23:27,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:23:27,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:23:27,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:23:15" (1/3) ... [2022-11-20 11:23:27,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5730e1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:23:27, skipping insertion in model container [2022-11-20 11:23:27,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18" (2/3) ... [2022-11-20 11:23:27,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5730e1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:23:27, skipping insertion in model container [2022-11-20 11:23:27,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:23:27" (3/3) ... [2022-11-20 11:23:27,638 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2022-11-20 11:23:27,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:23:27,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:23:27,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:23:27,756 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;@6049f54b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:23:27,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:23:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states 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 11:23:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:23:27,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:23:27,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:27,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:23:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:27,780 INFO L85 PathProgramCache]: Analyzing trace with hash 156847385, now seen corresponding path program 1 times [2022-11-20 11:23:27,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:27,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108994438] [2022-11-20 11:23:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:27,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:28,161 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 11:23:28,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:28,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108994438] [2022-11-20 11:23:28,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108994438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:28,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:28,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:23:28,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97555775] [2022-11-20 11:23:28,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:28,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:23:28,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:23:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:23:28,220 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 11:23:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:23:35,675 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2022-11-20 11:23:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:23:35,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-11-20 11:23:35,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:23:35,706 INFO L225 Difference]: With dead ends: 3160 [2022-11-20 11:23:35,707 INFO L226 Difference]: Without dead ends: 1983 [2022-11-20 11:23:35,715 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 11:23:35,718 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1086 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:23:35,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-20 11:23:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-11-20 11:23:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2022-11-20 11:23:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states 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 11:23:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2022-11-20 11:23:35,855 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 17 [2022-11-20 11:23:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:23:35,856 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2022-11-20 11:23:35,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 11:23:35,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2022-11-20 11:23:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:23:35,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:23:35,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:35,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:23:35,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:23:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2103739474, now seen corresponding path program 1 times [2022-11-20 11:23:35,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:35,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90751804] [2022-11-20 11:23:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:35,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:36,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:36,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90751804] [2022-11-20 11:23:36,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90751804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:36,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:36,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:23:36,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7078893] [2022-11-20 11:23:36,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:36,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:23:36,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:23:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:23:36,134 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:23:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:23:41,899 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2022-11-20 11:23:41,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:23:41,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-11-20 11:23:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:23:41,916 INFO L225 Difference]: With dead ends: 5456 [2022-11-20 11:23:41,916 INFO L226 Difference]: Without dead ends: 3528 [2022-11-20 11:23:41,919 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 11:23:41,921 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:23:41,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 11:23:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-11-20 11:23:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-11-20 11:23:42,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states 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 11:23:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2022-11-20 11:23:42,027 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 82 [2022-11-20 11:23:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:23:42,028 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2022-11-20 11:23:42,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:23:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2022-11-20 11:23:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 11:23:42,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:23:42,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:42,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:23:42,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:23:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash -751339231, now seen corresponding path program 1 times [2022-11-20 11:23:42,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:42,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931628087] [2022-11-20 11:23:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:42,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:42,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931628087] [2022-11-20 11:23:42,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931628087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:42,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:42,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:23:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423647214] [2022-11-20 11:23:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:42,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:23:42,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:23:42,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:23:42,331 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 11:23:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:23:47,725 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2022-11-20 11:23:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:23:47,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-11-20 11:23:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:23:47,753 INFO L225 Difference]: With dead ends: 10232 [2022-11-20 11:23:47,753 INFO L226 Difference]: Without dead ends: 6708 [2022-11-20 11:23:47,759 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 11:23:47,761 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:23:47,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 11:23:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2022-11-20 11:23:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2022-11-20 11:23:47,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states 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 11:23:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2022-11-20 11:23:48,009 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 88 [2022-11-20 11:23:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:23:48,012 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2022-11-20 11:23:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 11:23:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2022-11-20 11:23:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:23:48,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:23:48,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:48,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:23:48,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:23:48,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:48,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1911300396, now seen corresponding path program 1 times [2022-11-20 11:23:48,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:48,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508075867] [2022-11-20 11:23:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:48,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508075867] [2022-11-20 11:23:48,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508075867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:48,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:48,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:23:48,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000220355] [2022-11-20 11:23:48,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:48,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:23:48,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:23:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:23:48,303 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 11:23:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:23:54,158 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2022-11-20 11:23:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:23:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-11-20 11:23:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:23:54,200 INFO L225 Difference]: With dead ends: 17443 [2022-11-20 11:23:54,201 INFO L226 Difference]: Without dead ends: 10745 [2022-11-20 11:23:54,210 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 11:23:54,212 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:23:54,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 11:23:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2022-11-20 11:23:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2022-11-20 11:23:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states 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 11:23:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2022-11-20 11:23:54,551 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 118 [2022-11-20 11:23:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:23:54,553 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2022-11-20 11:23:54,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 11:23:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2022-11-20 11:23:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 11:23:54,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:23:54,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:54,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:23:54,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:23:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash 375265029, now seen corresponding path program 1 times [2022-11-20 11:23:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:54,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197346473] [2022-11-20 11:23:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:54,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:54,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197346473] [2022-11-20 11:23:54,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197346473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:54,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:54,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:23:54,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737871892] [2022-11-20 11:23:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:23:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:23:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:23:54,755 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 11:24:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:00,085 INFO L93 Difference]: Finished difference Result 29991 states and 41180 transitions. [2022-11-20 11:24:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:00,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-11-20 11:24:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:00,150 INFO L225 Difference]: With dead ends: 29991 [2022-11-20 11:24:00,151 INFO L226 Difference]: Without dead ends: 20111 [2022-11-20 11:24:00,166 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 11:24:00,168 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 916 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:00,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1998 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 11:24:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20111 states. [2022-11-20 11:24:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20111 to 19314. [2022-11-20 11:24:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19314 states, 19313 states have (on average 1.2821415626779888) internal successors, (24762), 19313 states have internal predecessors, (24762), 0 states have call successors, (0), 0 states 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 11:24:00,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19314 states to 19314 states and 24762 transitions. [2022-11-20 11:24:00,507 INFO L78 Accepts]: Start accepts. Automaton has 19314 states and 24762 transitions. Word has length 128 [2022-11-20 11:24:00,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:00,508 INFO L495 AbstractCegarLoop]: Abstraction has 19314 states and 24762 transitions. [2022-11-20 11:24:00,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 11:24:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 19314 states and 24762 transitions. [2022-11-20 11:24:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:24:00,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:00,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:00,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:24:00,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:24:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash -861628556, now seen corresponding path program 1 times [2022-11-20 11:24:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:00,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309335418] [2022-11-20 11:24:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:00,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:00,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:00,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309335418] [2022-11-20 11:24:00,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309335418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:00,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:00,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998431580] [2022-11-20 11:24:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:00,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:00,935 INFO L87 Difference]: Start difference. First operand 19314 states and 24762 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 11:24:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:06,042 INFO L93 Difference]: Finished difference Result 44942 states and 56980 transitions. [2022-11-20 11:24:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:06,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-20 11:24:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:06,108 INFO L225 Difference]: With dead ends: 44942 [2022-11-20 11:24:06,108 INFO L226 Difference]: Without dead ends: 25630 [2022-11-20 11:24:06,130 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 11:24:06,131 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:06,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1224 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 11:24:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25630 states. [2022-11-20 11:24:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25630 to 25622. [2022-11-20 11:24:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25622 states, 25621 states have (on average 1.2332461652550641) internal successors, (31597), 25621 states have internal predecessors, (31597), 0 states have call successors, (0), 0 states 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 11:24:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25622 states to 25622 states and 31597 transitions. [2022-11-20 11:24:06,712 INFO L78 Accepts]: Start accepts. Automaton has 25622 states and 31597 transitions. Word has length 133 [2022-11-20 11:24:06,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:06,712 INFO L495 AbstractCegarLoop]: Abstraction has 25622 states and 31597 transitions. [2022-11-20 11:24:06,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 11:24:06,713 INFO L276 IsEmpty]: Start isEmpty. Operand 25622 states and 31597 transitions. [2022-11-20 11:24:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 11:24:06,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:06,715 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:06,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:24:06,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:24:06,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash -653794963, now seen corresponding path program 1 times [2022-11-20 11:24:06,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:06,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482464050] [2022-11-20 11:24:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:06,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:24:07,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:07,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482464050] [2022-11-20 11:24:07,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482464050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:07,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:07,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131086319] [2022-11-20 11:24:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:07,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:07,247 INFO L87 Difference]: Start difference. First operand 25622 states and 31597 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 11:24:12,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:12,823 INFO L93 Difference]: Finished difference Result 70953 states and 88338 transitions. [2022-11-20 11:24:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:12,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 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 171 [2022-11-20 11:24:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:12,903 INFO L225 Difference]: With dead ends: 70953 [2022-11-20 11:24:12,904 INFO L226 Difference]: Without dead ends: 46120 [2022-11-20 11:24:12,926 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 11:24:12,927 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 781 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 3303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:12,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1229 Invalid, 3303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 11:24:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46120 states. [2022-11-20 11:24:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46120 to 42946. [2022-11-20 11:24:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.1722202817557341) internal successors, (50341), 42945 states have internal predecessors, (50341), 0 states have call successors, (0), 0 states 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 11:24:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50341 transitions. [2022-11-20 11:24:13,650 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50341 transitions. Word has length 171 [2022-11-20 11:24:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:13,650 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50341 transitions. [2022-11-20 11:24:13,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 11:24:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50341 transitions. [2022-11-20 11:24:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 11:24:13,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:13,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:13,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:24:13,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:24:13,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:13,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1752102673, now seen corresponding path program 1 times [2022-11-20 11:24:13,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:13,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451503989] [2022-11-20 11:24:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:13,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:24:14,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:14,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451503989] [2022-11-20 11:24:14,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451503989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:14,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:14,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:14,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406669436] [2022-11-20 11:24:14,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:14,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:14,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:14,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:14,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:14,667 INFO L87 Difference]: Start difference. First operand 42946 states and 50341 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 11:24:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:19,656 INFO L93 Difference]: Finished difference Result 85103 states and 99883 transitions. [2022-11-20 11:24:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:19,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 237 [2022-11-20 11:24:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:19,723 INFO L225 Difference]: With dead ends: 85103 [2022-11-20 11:24:19,723 INFO L226 Difference]: Without dead ends: 42946 [2022-11-20 11:24:19,743 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 11:24:19,744 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:19,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 11:24:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42946 states. [2022-11-20 11:24:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42946 to 42946. [2022-11-20 11:24:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.1721038537664454) internal successors, (50336), 42945 states have internal predecessors, (50336), 0 states have call successors, (0), 0 states 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 11:24:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50336 transitions. [2022-11-20 11:24:20,488 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50336 transitions. Word has length 237 [2022-11-20 11:24:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:20,488 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50336 transitions. [2022-11-20 11:24:20,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 11:24:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50336 transitions. [2022-11-20 11:24:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 11:24:20,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:20,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:20,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:24:20,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:24:20,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash 333874534, now seen corresponding path program 1 times [2022-11-20 11:24:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:20,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424382442] [2022-11-20 11:24:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:20,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:20,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424382442] [2022-11-20 11:24:20,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424382442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:20,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:20,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:20,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586848397] [2022-11-20 11:24:20,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:20,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:20,816 INFO L87 Difference]: Start difference. First operand 42946 states and 50336 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 11:24:26,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:26,951 INFO L93 Difference]: Finished difference Result 104790 states and 124867 transitions. [2022-11-20 11:24:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:26,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2022-11-20 11:24:26,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:27,144 INFO L225 Difference]: With dead ends: 104790 [2022-11-20 11:24:27,144 INFO L226 Difference]: Without dead ends: 62633 [2022-11-20 11:24:27,184 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 11:24:27,187 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 825 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:27,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 928 Invalid, 3285 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 11:24:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62633 states. [2022-11-20 11:24:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62633 to 60261. [2022-11-20 11:24:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60261 states, 60260 states have (on average 1.1630932625290409) internal successors, (70088), 60260 states have internal predecessors, (70088), 0 states have call successors, (0), 0 states 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 11:24:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60261 states to 60261 states and 70088 transitions. [2022-11-20 11:24:28,117 INFO L78 Accepts]: Start accepts. Automaton has 60261 states and 70088 transitions. Word has length 244 [2022-11-20 11:24:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:28,118 INFO L495 AbstractCegarLoop]: Abstraction has 60261 states and 70088 transitions. [2022-11-20 11:24:28,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 11:24:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 60261 states and 70088 transitions. [2022-11-20 11:24:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-20 11:24:28,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:28,123 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:28,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:24:28,124 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:24:28,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash -358945398, now seen corresponding path program 1 times [2022-11-20 11:24:28,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:28,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889243144] [2022-11-20 11:24:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:28,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:30,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:30,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889243144] [2022-11-20 11:24:30,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889243144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:30,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885686002] [2022-11-20 11:24:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:30,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:30,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:24:30,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:24:30,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:24:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:30,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:24:30,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-20 11:24:30,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:30,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885686002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:30,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:30,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 11:24:30,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616294933] [2022-11-20 11:24:30,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:30,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:30,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:30,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:30,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:24:30,453 INFO L87 Difference]: Start difference. First operand 60261 states and 70088 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:24:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:35,836 INFO L93 Difference]: Finished difference Result 119731 states and 139381 transitions. [2022-11-20 11:24:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:35,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 258 [2022-11-20 11:24:35,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:35,903 INFO L225 Difference]: With dead ends: 119731 [2022-11-20 11:24:35,903 INFO L226 Difference]: Without dead ends: 60259 [2022-11-20 11:24:35,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:24:35,934 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1189 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:35,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1438 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 11:24:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60259 states. [2022-11-20 11:24:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60259 to 60258. [2022-11-20 11:24:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60258 states, 60257 states have (on average 1.1318187098594354) internal successors, (68200), 60257 states have internal predecessors, (68200), 0 states have call successors, (0), 0 states 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 11:24:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60258 states to 60258 states and 68200 transitions. [2022-11-20 11:24:37,182 INFO L78 Accepts]: Start accepts. Automaton has 60258 states and 68200 transitions. Word has length 258 [2022-11-20 11:24:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:37,183 INFO L495 AbstractCegarLoop]: Abstraction has 60258 states and 68200 transitions. [2022-11-20 11:24:37,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:24:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 60258 states and 68200 transitions. [2022-11-20 11:24:37,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-20 11:24:37,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:37,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:24:37,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:24:37,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:24:37,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:24:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:37,423 INFO L85 PathProgramCache]: Analyzing trace with hash -531498495, now seen corresponding path program 1 times [2022-11-20 11:24:37,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:37,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980639343] [2022-11-20 11:24:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:37,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 158 proven. 113 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:24:39,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:39,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980639343] [2022-11-20 11:24:39,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980639343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:39,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820206319] [2022-11-20 11:24:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:39,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:39,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:24:39,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:24:39,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:24:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:39,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:24:39,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-20 11:24:40,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:40,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820206319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:40,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:40,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 11:24:40,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306839389] [2022-11-20 11:24:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:40,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:40,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:40,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:24:40,096 INFO L87 Difference]: Start difference. First operand 60258 states and 68200 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 11:24:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:45,522 INFO L93 Difference]: Finished difference Result 119716 states and 135596 transitions. [2022-11-20 11:24:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:45,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 323 [2022-11-20 11:24:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:45,594 INFO L225 Difference]: With dead ends: 119716 [2022-11-20 11:24:45,594 INFO L226 Difference]: Without dead ends: 60247 [2022-11-20 11:24:45,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:24:45,626 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1073 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:45,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 816 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 11:24:45,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60247 states. [2022-11-20 11:24:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60247 to 60244. [2022-11-20 11:24:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60244 states, 60243 states have (on average 1.0953139783875305) internal successors, (65985), 60243 states have internal predecessors, (65985), 0 states have call successors, (0), 0 states 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 11:24:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60244 states to 60244 states and 65985 transitions. [2022-11-20 11:24:46,742 INFO L78 Accepts]: Start accepts. Automaton has 60244 states and 65985 transitions. Word has length 323 [2022-11-20 11:24:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:46,743 INFO L495 AbstractCegarLoop]: Abstraction has 60244 states and 65985 transitions. [2022-11-20 11:24:46,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 11:24:46,743 INFO L276 IsEmpty]: Start isEmpty. Operand 60244 states and 65985 transitions. [2022-11-20 11:24:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-11-20 11:24:46,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:46,755 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 11:24:46,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:24:46,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:24:46,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:24:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1777497378, now seen corresponding path program 1 times [2022-11-20 11:24:46,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:46,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435986952] [2022-11-20 11:24:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:46,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:24:47,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:47,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435986952] [2022-11-20 11:24:47,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435986952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:47,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:47,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469018293] [2022-11-20 11:24:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:47,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:24:47,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:24:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:24:47,377 INFO L87 Difference]: Start difference. First operand 60244 states and 65985 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 11:24:59,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:59,584 INFO L93 Difference]: Finished difference Result 158472 states and 174232 transitions. [2022-11-20 11:24:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:24:59,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 365 [2022-11-20 11:24:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:59,714 INFO L225 Difference]: With dead ends: 158472 [2022-11-20 11:24:59,714 INFO L226 Difference]: Without dead ends: 99017 [2022-11-20 11:24:59,743 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 11:24:59,743 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1701 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 6693 mSolverCounterSat, 1016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 7709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1016 IncrementalHoareTripleChecker+Valid, 6693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:59,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 849 Invalid, 7709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1016 Valid, 6693 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-20 11:24:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99017 states. [2022-11-20 11:25:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99017 to 75999. [2022-11-20 11:25:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75999 states, 75998 states have (on average 1.0875417774151952) internal successors, (82651), 75998 states have internal predecessors, (82651), 0 states have call successors, (0), 0 states 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 11:25:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75999 states to 75999 states and 82651 transitions. [2022-11-20 11:25:01,037 INFO L78 Accepts]: Start accepts. Automaton has 75999 states and 82651 transitions. Word has length 365 [2022-11-20 11:25:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:01,037 INFO L495 AbstractCegarLoop]: Abstraction has 75999 states and 82651 transitions. [2022-11-20 11:25:01,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 11:25:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 75999 states and 82651 transitions. [2022-11-20 11:25:01,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-20 11:25:01,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:01,043 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:01,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:25:01,044 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash 300421095, now seen corresponding path program 1 times [2022-11-20 11:25:01,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:01,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218735881] [2022-11-20 11:25:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:01,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 11:25:01,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:01,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218735881] [2022-11-20 11:25:01,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218735881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:01,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:01,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:25:01,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688925290] [2022-11-20 11:25:01,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:01,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:01,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:01,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:01,459 INFO L87 Difference]: Start difference. First operand 75999 states and 82651 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 11:25:08,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:08,145 INFO L93 Difference]: Finished difference Result 175617 states and 192335 transitions. [2022-11-20 11:25:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:08,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 378 [2022-11-20 11:25:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:08,269 INFO L225 Difference]: With dead ends: 175617 [2022-11-20 11:25:08,269 INFO L226 Difference]: Without dead ends: 100407 [2022-11-20 11:25:08,300 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 11:25:08,301 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 813 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:08,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 893 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-20 11:25:08,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100407 states. [2022-11-20 11:25:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100407 to 98815. [2022-11-20 11:25:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98815 states, 98814 states have (on average 1.0906855303904306) internal successors, (107775), 98814 states have internal predecessors, (107775), 0 states have call successors, (0), 0 states 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 11:25:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98815 states to 98815 states and 107775 transitions. [2022-11-20 11:25:09,924 INFO L78 Accepts]: Start accepts. Automaton has 98815 states and 107775 transitions. Word has length 378 [2022-11-20 11:25:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:09,925 INFO L495 AbstractCegarLoop]: Abstraction has 98815 states and 107775 transitions. [2022-11-20 11:25:09,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 11:25:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 98815 states and 107775 transitions. [2022-11-20 11:25:09,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-20 11:25:09,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:09,935 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2022-11-20 11:25:09,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:25:09,935 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:09,936 INFO L85 PathProgramCache]: Analyzing trace with hash 153326968, now seen corresponding path program 1 times [2022-11-20 11:25:09,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:09,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533940234] [2022-11-20 11:25:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:09,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 327 proven. 113 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:25:12,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:12,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533940234] [2022-11-20 11:25:12,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533940234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535393147] [2022-11-20 11:25:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:12,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:12,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:12,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:25:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:25:12,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-20 11:25:12,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:12,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535393147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:12,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:12,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 11:25:12,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605263630] [2022-11-20 11:25:12,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:12,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:25:12,657 INFO L87 Difference]: Start difference. First operand 98815 states and 107775 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:18,297 INFO L93 Difference]: Finished difference Result 198419 states and 216348 transitions. [2022-11-20 11:25:18,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:18,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 408 [2022-11-20 11:25:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:18,414 INFO L225 Difference]: With dead ends: 198419 [2022-11-20 11:25:18,414 INFO L226 Difference]: Without dead ends: 100393 [2022-11-20 11:25:18,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:25:18,448 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 1022 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:18,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1471 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 11:25:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100393 states. [2022-11-20 11:25:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100393 to 98807. [2022-11-20 11:25:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98807 states, 98806 states have (on average 1.067101188186952) internal successors, (105436), 98806 states have internal predecessors, (105436), 0 states have call successors, (0), 0 states 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 11:25:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98807 states to 98807 states and 105436 transitions. [2022-11-20 11:25:20,051 INFO L78 Accepts]: Start accepts. Automaton has 98807 states and 105436 transitions. Word has length 408 [2022-11-20 11:25:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:20,052 INFO L495 AbstractCegarLoop]: Abstraction has 98807 states and 105436 transitions. [2022-11-20 11:25:20,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 98807 states and 105436 transitions. [2022-11-20 11:25:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-20 11:25:20,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:20,068 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 11:25:20,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:25:20,276 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1615700120, now seen corresponding path program 1 times [2022-11-20 11:25:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:20,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438812475] [2022-11-20 11:25:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 11:25:21,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:21,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438812475] [2022-11-20 11:25:21,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438812475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:21,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:21,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:25:21,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392005727] [2022-11-20 11:25:21,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:21,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:21,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:21,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:21,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:21,155 INFO L87 Difference]: Start difference. First operand 98807 states and 105436 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 11:25:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:28,476 INFO L93 Difference]: Finished difference Result 241040 states and 257881 transitions. [2022-11-20 11:25:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:28,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 448 [2022-11-20 11:25:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:28,648 INFO L225 Difference]: With dead ends: 241040 [2022-11-20 11:25:28,648 INFO L226 Difference]: Without dead ends: 143022 [2022-11-20 11:25:28,678 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 11:25:28,679 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 845 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2970 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:28,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 752 Invalid, 3580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2970 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 11:25:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143022 states. [2022-11-20 11:25:30,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143022 to 118493. [2022-11-20 11:25:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118493 states, 118492 states have (on average 1.0664517435776255) internal successors, (126366), 118492 states have internal predecessors, (126366), 0 states have call successors, (0), 0 states 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 11:25:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118493 states to 118493 states and 126366 transitions. [2022-11-20 11:25:30,798 INFO L78 Accepts]: Start accepts. Automaton has 118493 states and 126366 transitions. Word has length 448 [2022-11-20 11:25:30,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:30,799 INFO L495 AbstractCegarLoop]: Abstraction has 118493 states and 126366 transitions. [2022-11-20 11:25:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 11:25:30,799 INFO L276 IsEmpty]: Start isEmpty. Operand 118493 states and 126366 transitions. [2022-11-20 11:25:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-11-20 11:25:30,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:30,811 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:30,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:25:30,812 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:30,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1769487899, now seen corresponding path program 1 times [2022-11-20 11:25:30,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:30,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592232382] [2022-11-20 11:25:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 482 proven. 113 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 11:25:33,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:33,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592232382] [2022-11-20 11:25:33,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592232382] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:33,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855613217] [2022-11-20 11:25:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:33,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:33,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:33,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:33,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:25:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:25:33,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 11:25:33,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:33,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855613217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:33,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:33,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 11:25:33,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484857288] [2022-11-20 11:25:33,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:25:33,771 INFO L87 Difference]: Start difference. First operand 118493 states and 126366 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 11:25:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:39,255 INFO L93 Difference]: Finished difference Result 230661 states and 246976 transitions. [2022-11-20 11:25:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:39,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 489 [2022-11-20 11:25:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:39,647 INFO L225 Difference]: With dead ends: 230661 [2022-11-20 11:25:39,647 INFO L226 Difference]: Without dead ends: 128703 [2022-11-20 11:25:39,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:25:39,711 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1201 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:39,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 390 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 11:25:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128703 states. [2022-11-20 11:25:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128703 to 128703. [2022-11-20 11:25:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128703 states, 128702 states have (on average 1.0603176329816164) internal successors, (136465), 128702 states have internal predecessors, (136465), 0 states have call successors, (0), 0 states 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 11:25:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128703 states to 128703 states and 136465 transitions. [2022-11-20 11:25:41,938 INFO L78 Accepts]: Start accepts. Automaton has 128703 states and 136465 transitions. Word has length 489 [2022-11-20 11:25:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:41,939 INFO L495 AbstractCegarLoop]: Abstraction has 128703 states and 136465 transitions. [2022-11-20 11:25:41,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 11:25:41,939 INFO L276 IsEmpty]: Start isEmpty. Operand 128703 states and 136465 transitions. [2022-11-20 11:25:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-11-20 11:25:41,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:41,980 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:25:41,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:42,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:25:42,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2070630375, now seen corresponding path program 1 times [2022-11-20 11:25:42,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:42,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685553337] [2022-11-20 11:25:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 270 proven. 110 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:25:43,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:43,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685553337] [2022-11-20 11:25:43,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685553337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:43,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160688549] [2022-11-20 11:25:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:43,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:43,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:43,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:43,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:25:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:25:43,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-20 11:25:43,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:43,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160688549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:43,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:43,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-20 11:25:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724648393] [2022-11-20 11:25:43,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:43,871 INFO L87 Difference]: Start difference. First operand 128703 states and 136465 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 11:25:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:51,609 INFO L93 Difference]: Finished difference Result 292890 states and 310976 transitions. [2022-11-20 11:25:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:51,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 513 [2022-11-20 11:25:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:51,840 INFO L225 Difference]: With dead ends: 292890 [2022-11-20 11:25:51,840 INFO L226 Difference]: Without dead ends: 164976 [2022-11-20 11:25:51,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:51,904 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1013 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 3662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:51,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 454 Invalid, 3662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-20 11:25:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164976 states. [2022-11-20 11:25:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164976 to 162549. [2022-11-20 11:25:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162549 states, 162548 states have (on average 1.061975539532938) internal successors, (172622), 162548 states have internal predecessors, (172622), 0 states have call successors, (0), 0 states 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 11:25:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162549 states to 162549 states and 172622 transitions. [2022-11-20 11:25:54,534 INFO L78 Accepts]: Start accepts. Automaton has 162549 states and 172622 transitions. Word has length 513 [2022-11-20 11:25:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:54,535 INFO L495 AbstractCegarLoop]: Abstraction has 162549 states and 172622 transitions. [2022-11-20 11:25:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 11:25:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 162549 states and 172622 transitions. [2022-11-20 11:25:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-11-20 11:25:54,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:54,546 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:25:54,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:54,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da18a95a-c835-438d-94e1-d3e88610a9ea/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:25:54,747 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2054915372, now seen corresponding path program 1 times [2022-11-20 11:25:54,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:54,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092758451] [2022-11-20 11:25:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:54,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 11:25:55,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:55,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092758451] [2022-11-20 11:25:55,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092758451] provided 1 perfect and 0 imperfect interpolant sequences