./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8 --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 fe2b0deb169362c7d64c9df76766c9af54619e5f9a01cab4bf1bef7672f8f279 --- 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-2329fc7 [2022-12-13 11:28:25,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:28:25,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:28:25,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:28:25,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:28:25,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:28:25,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:28:25,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:28:25,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:28:25,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:28:25,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:28:25,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:28:25,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:28:25,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:28:25,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:28:25,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:28:25,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:28:25,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:28:25,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:28:25,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:28:25,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:28:25,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:28:25,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:28:25,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:28:25,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:28:25,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:28:25,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:28:25,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:28:25,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:28:25,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:28:25,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:28:25,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:28:25,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:28:25,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:28:25,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:28:25,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:28:25,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:28:25,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:28:25,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:28:25,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:28:25,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:28:25,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:28:25,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:28:25,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:28:25,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:28:25,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:28:25,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:28:25,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:28:25,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:28:25,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:28:25,780 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:28:25,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:28:25,780 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:28:25,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:28:25,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:28:25,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:28:25,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:28:25,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:28:25,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:28:25,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:28:25,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:28:25,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:28:25,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:28:25,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:28:25,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:28:25,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:28:25,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:28:25,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:28:25,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:28:25,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:28:25,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:28:25,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:28:25,784 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:28:25,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:28:25,784 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:28:25,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:28:25,785 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:28:25,785 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe2b0deb169362c7d64c9df76766c9af54619e5f9a01cab4bf1bef7672f8f279 [2022-12-13 11:28:25,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:28:25,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:28:25,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:28:25,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:28:25,987 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:28:25,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem19_label59.c [2022-12-13 11:28:28,594 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:28:28,977 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:28:28,977 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/sv-benchmarks/c/eca-rers2012/Problem19_label59.c [2022-12-13 11:28:29,014 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/data/a84ebda96/87efde2fde4a4a44b5ea8fbd4cd25125/FLAG6a12ec317 [2022-12-13 11:28:29,148 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/data/a84ebda96/87efde2fde4a4a44b5ea8fbd4cd25125 [2022-12-13 11:28:29,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:28:29,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:28:29,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:28:29,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:28:29,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:28:29,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:28:29" (1/1) ... [2022-12-13 11:28:29,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e7f1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:29, skipping insertion in model container [2022-12-13 11:28:29,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:28:29" (1/1) ... [2022-12-13 11:28:29,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:28:29,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:28:29,552 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_32a7fb90-e005-4be8-b619-48e4ce355ecb/sv-benchmarks/c/eca-rers2012/Problem19_label59.c[3603,3616] [2022-12-13 11:28:30,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:28:30,538 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:28:30,549 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_32a7fb90-e005-4be8-b619-48e4ce355ecb/sv-benchmarks/c/eca-rers2012/Problem19_label59.c[3603,3616] [2022-12-13 11:28:31,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:28:31,245 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:28:31,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31 WrapperNode [2022-12-13 11:28:31,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:28:31,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:28:31,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:28:31,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:28:31,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:31,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:31,814 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-12-13 11:28:31,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:28:31,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:28:31,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:28:31,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:28:31,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:31,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:31,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:31,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:32,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:32,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:32,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:32,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:32,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:28:32,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:28:32,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:28:32,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:28:32,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (1/1) ... [2022-12-13 11:28:32,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:28:32,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:32,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:28:32,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:28:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:28:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:28:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:28:32,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:28:32,551 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:28:32,553 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:28:39,369 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:28:39,385 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:28:39,385 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:28:39,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:28:39 BoogieIcfgContainer [2022-12-13 11:28:39,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:28:39,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:28:39,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:28:39,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:28:39,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:28:29" (1/3) ... [2022-12-13 11:28:39,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7c5966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:28:39, skipping insertion in model container [2022-12-13 11:28:39,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:28:31" (2/3) ... [2022-12-13 11:28:39,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7c5966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:28:39, skipping insertion in model container [2022-12-13 11:28:39,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:28:39" (3/3) ... [2022-12-13 11:28:39,395 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label59.c [2022-12-13 11:28:39,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:28:39,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:28:39,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:28:39,473 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;@5a536e99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>] [2022-12-13 11:28:39,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:28:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 11:28:39,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:28:39,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:39,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:28:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1225036359, now seen corresponding path program 1 times [2022-12-13 11:28:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:39,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820853426] [2022-12-13 11:28:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:39,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:39,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820853426] [2022-12-13 11:28:39,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820853426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:39,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:39,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:28:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367276142] [2022-12-13 11:28:39,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:39,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:39,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:39,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:28:39,719 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:28:46,128 INFO L93 Difference]: Finished difference Result 4975 states and 9416 transitions. [2022-12-13 11:28:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:46,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-12-13 11:28:46,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:28:46,156 INFO L225 Difference]: With dead ends: 4975 [2022-12-13 11:28:46,157 INFO L226 Difference]: Without dead ends: 3163 [2022-12-13 11:28:46,163 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 [2022-12-13 11:28:46,166 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 1521 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:28:46,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1524 Invalid, 5793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-13 11:28:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-12-13 11:28:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3123. [2022-12-13 11:28:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.6268417680973735) internal successors, (5079), 3122 states have internal predecessors, (5079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5079 transitions. [2022-12-13 11:28:46,285 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5079 transitions. Word has length 25 [2022-12-13 11:28:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:28:46,285 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5079 transitions. [2022-12-13 11:28:46,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:46,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5079 transitions. [2022-12-13 11:28:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 11:28:46,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:28:46,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:46,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:28:46,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:28:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:46,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1658791217, now seen corresponding path program 1 times [2022-12-13 11:28:46,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:46,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942915384] [2022-12-13 11:28:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:46,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942915384] [2022-12-13 11:28:46,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942915384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:46,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:46,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:28:46,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979665249] [2022-12-13 11:28:46,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:28:46,506 INFO L87 Difference]: Start difference. First operand 3123 states and 5079 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:28:52,912 INFO L93 Difference]: Finished difference Result 9055 states and 14814 transitions. [2022-12-13 11:28:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:52,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-12-13 11:28:52,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:28:52,924 INFO L225 Difference]: With dead ends: 9055 [2022-12-13 11:28:52,924 INFO L226 Difference]: Without dead ends: 5934 [2022-12-13 11:28:52,927 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 [2022-12-13 11:28:52,928 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1536 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:28:52,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1543 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 11:28:52,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2022-12-13 11:28:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5910. [2022-12-13 11:28:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.4235911321712642) internal successors, (8412), 5909 states have internal predecessors, (8412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8412 transitions. [2022-12-13 11:28:53,002 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8412 transitions. Word has length 96 [2022-12-13 11:28:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:28:53,003 INFO L495 AbstractCegarLoop]: Abstraction has 5910 states and 8412 transitions. [2022-12-13 11:28:53,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8412 transitions. [2022-12-13 11:28:53,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 11:28:53,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:28:53,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:53,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:28:53,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:28:53,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:53,006 INFO L85 PathProgramCache]: Analyzing trace with hash -698240399, now seen corresponding path program 1 times [2022-12-13 11:28:53,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:53,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120606264] [2022-12-13 11:28:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:53,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:53,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:53,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120606264] [2022-12-13 11:28:53,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120606264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:53,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:53,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:28:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990438358] [2022-12-13 11:28:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:53,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:28:53,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:28:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:28:53,271 INFO L87 Difference]: Start difference. First operand 5910 states and 8412 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:02,353 INFO L93 Difference]: Finished difference Result 18680 states and 26154 transitions. [2022-12-13 11:29:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:02,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-12-13 11:29:02,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:02,376 INFO L225 Difference]: With dead ends: 18680 [2022-12-13 11:29:02,376 INFO L226 Difference]: Without dead ends: 12772 [2022-12-13 11:29:02,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:02,383 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 4367 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 7341 mSolverCounterSat, 2200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4367 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 9541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2200 IncrementalHoareTripleChecker+Valid, 7341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:02,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4367 Valid, 1281 Invalid, 9541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2200 Valid, 7341 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-12-13 11:29:02,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2022-12-13 11:29:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12761. [2022-12-13 11:29:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12761 states, 12760 states have (on average 1.3468652037617554) internal successors, (17186), 12760 states have internal predecessors, (17186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12761 states to 12761 states and 17186 transitions. [2022-12-13 11:29:02,549 INFO L78 Accepts]: Start accepts. Automaton has 12761 states and 17186 transitions. Word has length 108 [2022-12-13 11:29:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:02,550 INFO L495 AbstractCegarLoop]: Abstraction has 12761 states and 17186 transitions. [2022-12-13 11:29:02,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 12761 states and 17186 transitions. [2022-12-13 11:29:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-12-13 11:29:02,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:02,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:02,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:29:02,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash -519306661, now seen corresponding path program 1 times [2022-12-13 11:29:02,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:02,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307112321] [2022-12-13 11:29:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:02,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:02,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:02,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307112321] [2022-12-13 11:29:02,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307112321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:02,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:02,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:29:02,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391095328] [2022-12-13 11:29:02,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:29:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:29:02,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:02,754 INFO L87 Difference]: Start difference. First operand 12761 states and 17186 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:08,640 INFO L93 Difference]: Finished difference Result 29634 states and 40392 transitions. [2022-12-13 11:29:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:29:08,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2022-12-13 11:29:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:08,669 INFO L225 Difference]: With dead ends: 29634 [2022-12-13 11:29:08,669 INFO L226 Difference]: Without dead ends: 18241 [2022-12-13 11:29:08,677 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 [2022-12-13 11:29:08,678 INFO L413 NwaCegarLoop]: 3079 mSDtfsCounter, 1466 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3739 mSolverCounterSat, 1676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 5415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1676 IncrementalHoareTripleChecker+Valid, 3739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:08,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 3270 Invalid, 5415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1676 Valid, 3739 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 11:29:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18241 states. [2022-12-13 11:29:08,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18241 to 18237. [2022-12-13 11:29:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18237 states, 18236 states have (on average 1.2679315639394604) internal successors, (23122), 18236 states have internal predecessors, (23122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18237 states to 18237 states and 23122 transitions. [2022-12-13 11:29:08,875 INFO L78 Accepts]: Start accepts. Automaton has 18237 states and 23122 transitions. Word has length 232 [2022-12-13 11:29:08,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:08,875 INFO L495 AbstractCegarLoop]: Abstraction has 18237 states and 23122 transitions. [2022-12-13 11:29:08,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 18237 states and 23122 transitions. [2022-12-13 11:29:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-12-13 11:29:08,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:08,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:08,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:29:08,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1757817294, now seen corresponding path program 1 times [2022-12-13 11:29:08,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:08,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879646193] [2022-12-13 11:29:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:08,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 11:29:09,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:09,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879646193] [2022-12-13 11:29:09,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879646193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:09,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:09,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:29:09,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476805447] [2022-12-13 11:29:09,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:09,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:09,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:09,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:09,556 INFO L87 Difference]: Start difference. First operand 18237 states and 23122 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:17,969 INFO L93 Difference]: Finished difference Result 44706 states and 55895 transitions. [2022-12-13 11:29:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:17,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 354 [2022-12-13 11:29:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:18,002 INFO L225 Difference]: With dead ends: 44706 [2022-12-13 11:29:18,002 INFO L226 Difference]: Without dead ends: 27836 [2022-12-13 11:29:18,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:18,013 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 3756 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9336 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 9761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 9336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:18,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2094 Invalid, 9761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 9336 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-12-13 11:29:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27836 states. [2022-12-13 11:29:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27836 to 27813. [2022-12-13 11:29:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27813 states, 27812 states have (on average 1.201891269955415) internal successors, (33427), 27812 states have internal predecessors, (33427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27813 states to 27813 states and 33427 transitions. [2022-12-13 11:29:18,268 INFO L78 Accepts]: Start accepts. Automaton has 27813 states and 33427 transitions. Word has length 354 [2022-12-13 11:29:18,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:18,268 INFO L495 AbstractCegarLoop]: Abstraction has 27813 states and 33427 transitions. [2022-12-13 11:29:18,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 27813 states and 33427 transitions. [2022-12-13 11:29:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-12-13 11:29:18,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:18,273 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:18,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:29:18,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:18,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash -278228072, now seen corresponding path program 1 times [2022-12-13 11:29:18,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:18,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260906879] [2022-12-13 11:29:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:18,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:18,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260906879] [2022-12-13 11:29:18,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260906879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:18,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:18,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:29:18,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906111807] [2022-12-13 11:29:18,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:18,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:18,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:18,738 INFO L87 Difference]: Start difference. First operand 27813 states and 33427 transitions. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:26,686 INFO L93 Difference]: Finished difference Result 52925 states and 64135 transitions. [2022-12-13 11:29:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 382 [2022-12-13 11:29:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:26,710 INFO L225 Difference]: With dead ends: 52925 [2022-12-13 11:29:26,710 INFO L226 Difference]: Without dead ends: 27813 [2022-12-13 11:29:26,721 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 [2022-12-13 11:29:26,721 INFO L413 NwaCegarLoop]: 1769 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7313 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 7321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:26,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2111 Invalid, 7321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7313 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-12-13 11:29:26,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27813 states. [2022-12-13 11:29:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27813 to 27813. [2022-12-13 11:29:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27813 states, 27812 states have (on average 1.2014238458219473) internal successors, (33414), 27812 states have internal predecessors, (33414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27813 states to 27813 states and 33414 transitions. [2022-12-13 11:29:26,968 INFO L78 Accepts]: Start accepts. Automaton has 27813 states and 33414 transitions. Word has length 382 [2022-12-13 11:29:26,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:26,968 INFO L495 AbstractCegarLoop]: Abstraction has 27813 states and 33414 transitions. [2022-12-13 11:29:26,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 27813 states and 33414 transitions. [2022-12-13 11:29:26,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-12-13 11:29:26,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:26,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:26,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:29:26,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash 325902696, now seen corresponding path program 1 times [2022-12-13 11:29:26,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:26,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025282269] [2022-12-13 11:29:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:26,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:27,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025282269] [2022-12-13 11:29:27,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025282269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:27,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:27,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:29:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628102859] [2022-12-13 11:29:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:27,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:29:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:29:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:27,344 INFO L87 Difference]: Start difference. First operand 27813 states and 33414 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:33,405 INFO L93 Difference]: Finished difference Result 61182 states and 76059 transitions. [2022-12-13 11:29:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:29:33,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 512 [2022-12-13 11:29:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:33,438 INFO L225 Difference]: With dead ends: 61182 [2022-12-13 11:29:33,438 INFO L226 Difference]: Without dead ends: 36101 [2022-12-13 11:29:33,454 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 [2022-12-13 11:29:33,455 INFO L413 NwaCegarLoop]: 1925 mSDtfsCounter, 1695 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5049 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 5049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:33,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 2074 Invalid, 6003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 5049 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 11:29:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36101 states. [2022-12-13 11:29:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36101 to 36082. [2022-12-13 11:29:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36082 states, 36081 states have (on average 1.2354424766497603) internal successors, (44576), 36081 states have internal predecessors, (44576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36082 states to 36082 states and 44576 transitions. [2022-12-13 11:29:33,794 INFO L78 Accepts]: Start accepts. Automaton has 36082 states and 44576 transitions. Word has length 512 [2022-12-13 11:29:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:33,795 INFO L495 AbstractCegarLoop]: Abstraction has 36082 states and 44576 transitions. [2022-12-13 11:29:33,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 36082 states and 44576 transitions. [2022-12-13 11:29:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-12-13 11:29:33,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:33,798 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:33,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:29:33,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash 942540356, now seen corresponding path program 1 times [2022-12-13 11:29:33,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:33,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371748617] [2022-12-13 11:29:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:33,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 11:29:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:34,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371748617] [2022-12-13 11:29:34,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371748617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:34,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:34,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:29:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372960210] [2022-12-13 11:29:34,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:34,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:29:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:34,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:29:34,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:34,120 INFO L87 Difference]: Start difference. First operand 36082 states and 44576 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:40,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:40,049 INFO L93 Difference]: Finished difference Result 77634 states and 97709 transitions. [2022-12-13 11:29:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:29:40,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 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 590 [2022-12-13 11:29:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:40,085 INFO L225 Difference]: With dead ends: 77634 [2022-12-13 11:29:40,085 INFO L226 Difference]: Without dead ends: 44284 [2022-12-13 11:29:40,100 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 [2022-12-13 11:29:40,101 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 1380 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 2094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 6020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2094 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:40,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 795 Invalid, 6020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2094 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 11:29:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44284 states. [2022-12-13 11:29:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44284 to 44272. [2022-12-13 11:29:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44272 states, 44271 states have (on average 1.2296988999570826) internal successors, (54440), 44271 states have internal predecessors, (54440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44272 states to 44272 states and 54440 transitions. [2022-12-13 11:29:40,457 INFO L78 Accepts]: Start accepts. Automaton has 44272 states and 54440 transitions. Word has length 590 [2022-12-13 11:29:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:40,458 INFO L495 AbstractCegarLoop]: Abstraction has 44272 states and 54440 transitions. [2022-12-13 11:29:40,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 44272 states and 54440 transitions. [2022-12-13 11:29:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-12-13 11:29:40,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:40,463 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:40,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:29:40,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 192399333, now seen corresponding path program 1 times [2022-12-13 11:29:40,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:40,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678583400] [2022-12-13 11:29:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:40,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-13 11:29:40,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:40,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678583400] [2022-12-13 11:29:40,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678583400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:40,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:40,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:29:40,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991137795] [2022-12-13 11:29:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:40,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:29:40,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:29:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:40,817 INFO L87 Difference]: Start difference. First operand 44272 states and 54440 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:47,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:47,624 INFO L93 Difference]: Finished difference Result 127006 states and 157393 transitions. [2022-12-13 11:29:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:29:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 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 631 [2022-12-13 11:29:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:47,705 INFO L225 Difference]: With dead ends: 127006 [2022-12-13 11:29:47,706 INFO L226 Difference]: Without dead ends: 85466 [2022-12-13 11:29:47,732 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 [2022-12-13 11:29:47,733 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 2109 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 5541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:47,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 974 Invalid, 5541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-12-13 11:29:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85466 states. [2022-12-13 11:29:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85466 to 85462. [2022-12-13 11:29:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85462 states, 85461 states have (on average 1.2110904389136565) internal successors, (103501), 85461 states have internal predecessors, (103501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85462 states to 85462 states and 103501 transitions. [2022-12-13 11:29:48,449 INFO L78 Accepts]: Start accepts. Automaton has 85462 states and 103501 transitions. Word has length 631 [2022-12-13 11:29:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:48,450 INFO L495 AbstractCegarLoop]: Abstraction has 85462 states and 103501 transitions. [2022-12-13 11:29:48,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 85462 states and 103501 transitions. [2022-12-13 11:29:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2022-12-13 11:29:48,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:48,454 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:48,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:29:48,455 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:48,455 INFO L85 PathProgramCache]: Analyzing trace with hash 207909631, now seen corresponding path program 1 times [2022-12-13 11:29:48,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:48,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818576384] [2022-12-13 11:29:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:48,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 45 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 11:29:49,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:49,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818576384] [2022-12-13 11:29:49,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818576384] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:29:49,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142064646] [2022-12-13 11:29:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:49,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:29:49,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:29:49,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:29:49,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:29:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:49,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:29:49,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:29:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:49,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:29:49,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142064646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:49,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:29:49,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 11:29:49,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554432979] [2022-12-13 11:29:49,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:49,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:29:49,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:29:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:29:49,829 INFO L87 Difference]: Start difference. First operand 85462 states and 103501 transitions. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:56,183 INFO L93 Difference]: Finished difference Result 233691 states and 286262 transitions. [2022-12-13 11:29:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:29:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 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 634 [2022-12-13 11:29:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:56,315 INFO L225 Difference]: With dead ends: 233691 [2022-12-13 11:29:56,315 INFO L226 Difference]: Without dead ends: 148229 [2022-12-13 11:29:56,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:29:56,347 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1526 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3901 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 5629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:56,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1688 Invalid, 5629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3901 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 11:29:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148229 states. [2022-12-13 11:29:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148229 to 140035. [2022-12-13 11:29:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140035 states, 140034 states have (on average 1.1517702843595128) internal successors, (161287), 140034 states have internal predecessors, (161287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140035 states to 140035 states and 161287 transitions. [2022-12-13 11:29:57,745 INFO L78 Accepts]: Start accepts. Automaton has 140035 states and 161287 transitions. Word has length 634 [2022-12-13 11:29:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:57,745 INFO L495 AbstractCegarLoop]: Abstraction has 140035 states and 161287 transitions. [2022-12-13 11:29:57,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:29:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 140035 states and 161287 transitions. [2022-12-13 11:29:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-12-13 11:29:57,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:57,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:57,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-13 11:29:57,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 11:29:57,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:57,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2001287119, now seen corresponding path program 1 times [2022-12-13 11:29:57,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:57,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920038918] [2022-12-13 11:29:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:57,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-12-13 11:29:58,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:58,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920038918] [2022-12-13 11:29:58,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920038918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:58,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:58,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:29:58,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715186209] [2022-12-13 11:29:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:58,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:29:58,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:58,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:29:58,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:58,441 INFO L87 Difference]: Start difference. First operand 140035 states and 161287 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:05,811 INFO L93 Difference]: Finished difference Result 277350 states and 319859 transitions. [2022-12-13 11:30:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:30:05,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 724 [2022-12-13 11:30:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:05,959 INFO L225 Difference]: With dead ends: 277350 [2022-12-13 11:30:05,960 INFO L226 Difference]: Without dead ends: 140047 [2022-12-13 11:30:06,013 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 [2022-12-13 11:30:06,013 INFO L413 NwaCegarLoop]: 2856 mSDtfsCounter, 1421 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4413 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 4413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:06,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 3041 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 4413 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-12-13 11:30:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140047 states. [2022-12-13 11:30:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140047 to 140033. [2022-12-13 11:30:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140033 states, 140032 states have (on average 1.1178801988117002) internal successors, (156539), 140032 states have internal predecessors, (156539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140033 states to 140033 states and 156539 transitions. [2022-12-13 11:30:07,423 INFO L78 Accepts]: Start accepts. Automaton has 140033 states and 156539 transitions. Word has length 724 [2022-12-13 11:30:07,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:07,423 INFO L495 AbstractCegarLoop]: Abstraction has 140033 states and 156539 transitions. [2022-12-13 11:30:07,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:07,424 INFO L276 IsEmpty]: Start isEmpty. Operand 140033 states and 156539 transitions. [2022-12-13 11:30:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2022-12-13 11:30:07,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:07,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:07,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:30:07,432 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1259584170, now seen corresponding path program 1 times [2022-12-13 11:30:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:07,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571880848] [2022-12-13 11:30:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 45 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571880848] [2022-12-13 11:30:09,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571880848] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251703765] [2022-12-13 11:30:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:09,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:09,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:09,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:30:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:09,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:30:09,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-12-13 11:30:09,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:30:09,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251703765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:09,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:30:09,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 11:30:09,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616414795] [2022-12-13 11:30:09,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:09,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:30:09,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:30:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:30:09,600 INFO L87 Difference]: Start difference. First operand 140033 states and 156539 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:15,507 INFO L93 Difference]: Finished difference Result 316922 states and 355599 transitions. [2022-12-13 11:30:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:30:15,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 731 [2022-12-13 11:30:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:15,685 INFO L225 Difference]: With dead ends: 316922 [2022-12-13 11:30:15,686 INFO L226 Difference]: Without dead ends: 174156 [2022-12-13 11:30:15,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:30:15,736 INFO L413 NwaCegarLoop]: 2486 mSDtfsCounter, 1688 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 1691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 5463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1691 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:15,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 2577 Invalid, 5463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1691 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-12-13 11:30:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174156 states. [2022-12-13 11:30:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174156 to 167317. [2022-12-13 11:30:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167317 states, 167316 states have (on average 1.1028771904659447) internal successors, (184529), 167316 states have internal predecessors, (184529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167317 states to 167317 states and 184529 transitions. [2022-12-13 11:30:17,442 INFO L78 Accepts]: Start accepts. Automaton has 167317 states and 184529 transitions. Word has length 731 [2022-12-13 11:30:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:17,442 INFO L495 AbstractCegarLoop]: Abstraction has 167317 states and 184529 transitions. [2022-12-13 11:30:17,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 167317 states and 184529 transitions. [2022-12-13 11:30:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2022-12-13 11:30:17,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:17,450 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:17,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:30:17,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:17,651 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2103569992, now seen corresponding path program 1 times [2022-12-13 11:30:17,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:17,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277524626] [2022-12-13 11:30:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:17,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-13 11:30:19,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:19,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277524626] [2022-12-13 11:30:19,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277524626] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:19,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:19,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:30:19,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605375286] [2022-12-13 11:30:19,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:19,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:30:19,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:19,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:30:19,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:30:19,274 INFO L87 Difference]: Start difference. First operand 167317 states and 184529 transitions. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:29,044 INFO L93 Difference]: Finished difference Result 403168 states and 449137 transitions. [2022-12-13 11:30:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:30:29,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 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 897 [2022-12-13 11:30:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:29,274 INFO L225 Difference]: With dead ends: 403168 [2022-12-13 11:30:29,274 INFO L226 Difference]: Without dead ends: 237216 [2022-12-13 11:30:29,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:30:29,333 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 2873 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 8008 mSolverCounterSat, 1296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 9304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1296 IncrementalHoareTripleChecker+Valid, 8008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:29,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2873 Valid, 3317 Invalid, 9304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1296 Valid, 8008 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-12-13 11:30:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237216 states. [2022-12-13 11:30:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237216 to 236946. [2022-12-13 11:30:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236946 states, 236945 states have (on average 1.0891810335731922) internal successors, (258076), 236945 states have internal predecessors, (258076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236946 states to 236946 states and 258076 transitions. [2022-12-13 11:30:31,853 INFO L78 Accepts]: Start accepts. Automaton has 236946 states and 258076 transitions. Word has length 897 [2022-12-13 11:30:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:31,854 INFO L495 AbstractCegarLoop]: Abstraction has 236946 states and 258076 transitions. [2022-12-13 11:30:31,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 236946 states and 258076 transitions. [2022-12-13 11:30:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2022-12-13 11:30:31,866 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:31,867 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:31,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:30:31,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:31,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:31,868 INFO L85 PathProgramCache]: Analyzing trace with hash 869003777, now seen corresponding path program 1 times [2022-12-13 11:30:31,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:31,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32257741] [2022-12-13 11:30:31,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:31,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-12-13 11:30:32,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:32,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32257741] [2022-12-13 11:30:32,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32257741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:32,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:32,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:30:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893656885] [2022-12-13 11:30:32,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:32,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:30:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:30:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:30:32,624 INFO L87 Difference]: Start difference. First operand 236946 states and 258076 transitions. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:46,238 INFO L93 Difference]: Finished difference Result 714336 states and 783605 transitions. [2022-12-13 11:30:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:30:46,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 931 [2022-12-13 11:30:46,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:46,783 INFO L225 Difference]: With dead ends: 714336 [2022-12-13 11:30:46,783 INFO L226 Difference]: Without dead ends: 480122 [2022-12-13 11:30:46,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:30:46,917 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 3331 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 8622 mSolverCounterSat, 2849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 11471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2849 IncrementalHoareTripleChecker+Valid, 8622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:46,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 1176 Invalid, 11471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2849 Valid, 8622 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-12-13 11:30:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480122 states. [2022-12-13 11:30:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480122 to 471811. [2022-12-13 11:30:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471811 states, 471810 states have (on average 1.0808545812933172) internal successors, (509958), 471810 states have internal predecessors, (509958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471811 states to 471811 states and 509958 transitions. [2022-12-13 11:30:51,799 INFO L78 Accepts]: Start accepts. Automaton has 471811 states and 509958 transitions. Word has length 931 [2022-12-13 11:30:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:51,800 INFO L495 AbstractCegarLoop]: Abstraction has 471811 states and 509958 transitions. [2022-12-13 11:30:51,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:30:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 471811 states and 509958 transitions. [2022-12-13 11:30:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2022-12-13 11:30:51,809 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:51,809 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:51,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:30:51,809 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:51,809 INFO L85 PathProgramCache]: Analyzing trace with hash -508890172, now seen corresponding path program 1 times [2022-12-13 11:30:51,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:51,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467066451] [2022-12-13 11:30:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:51,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 393 proven. 66 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-12-13 11:30:53,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:53,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467066451] [2022-12-13 11:30:53,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467066451] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:53,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643469459] [2022-12-13 11:30:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:53,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:53,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:53,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:53,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:30:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:53,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:30:53,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-12-13 11:30:53,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:30:53,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643469459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:53,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:30:53,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 11:30:53,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089305652] [2022-12-13 11:30:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:53,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:30:53,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:30:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:30:53,897 INFO L87 Difference]: Start difference. First operand 471811 states and 509958 transitions. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:02,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:02,405 INFO L93 Difference]: Finished difference Result 1047494 states and 1141364 transitions. [2022-12-13 11:31:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:02,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 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 1026 [2022-12-13 11:31:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:03,181 INFO L225 Difference]: With dead ends: 1047494 [2022-12-13 11:31:03,181 INFO L226 Difference]: Without dead ends: 578415 [2022-12-13 11:31:03,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:31:03,308 INFO L413 NwaCegarLoop]: 2843 mSDtfsCounter, 1390 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4009 mSolverCounterSat, 1658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1658 IncrementalHoareTripleChecker+Valid, 4009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:03,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 3007 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1658 Valid, 4009 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-13 11:31:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578415 states. [2022-12-13 11:31:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578415 to 568743. [2022-12-13 11:31:08,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568743 states, 568742 states have (on average 1.0799624434277757) internal successors, (614220), 568742 states have internal predecessors, (614220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568743 states to 568743 states and 614220 transitions. [2022-12-13 11:31:09,550 INFO L78 Accepts]: Start accepts. Automaton has 568743 states and 614220 transitions. Word has length 1026 [2022-12-13 11:31:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:09,551 INFO L495 AbstractCegarLoop]: Abstraction has 568743 states and 614220 transitions. [2022-12-13 11:31:09,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 568743 states and 614220 transitions. [2022-12-13 11:31:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2022-12-13 11:31:09,567 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:09,567 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:09,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:31:09,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 11:31:09,769 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:09,771 INFO L85 PathProgramCache]: Analyzing trace with hash 477216125, now seen corresponding path program 1 times [2022-12-13 11:31:09,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:09,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568132111] [2022-12-13 11:31:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-12-13 11:31:10,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:10,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568132111] [2022-12-13 11:31:10,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568132111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:10,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:10,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:31:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468621628] [2022-12-13 11:31:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:10,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:10,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:10,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:10,647 INFO L87 Difference]: Start difference. First operand 568743 states and 614220 transitions. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:18,783 INFO L93 Difference]: Finished difference Result 1137502 states and 1228473 transitions. [2022-12-13 11:31:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:18,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1047 [2022-12-13 11:31:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:19,461 INFO L225 Difference]: With dead ends: 1137502 [2022-12-13 11:31:19,461 INFO L226 Difference]: Without dead ends: 568760 [2022-12-13 11:31:19,801 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 [2022-12-13 11:31:19,801 INFO L413 NwaCegarLoop]: 2811 mSDtfsCounter, 1306 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4264 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 4873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 4264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:19,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 2987 Invalid, 4873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 4264 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-12-13 11:31:20,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568760 states. [2022-12-13 11:31:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568760 to 568738. [2022-12-13 11:31:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568738 states, 568737 states have (on average 1.0649790676534145) internal successors, (605693), 568737 states have internal predecessors, (605693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568738 states to 568738 states and 605693 transitions. [2022-12-13 11:31:25,659 INFO L78 Accepts]: Start accepts. Automaton has 568738 states and 605693 transitions. Word has length 1047 [2022-12-13 11:31:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:25,659 INFO L495 AbstractCegarLoop]: Abstraction has 568738 states and 605693 transitions. [2022-12-13 11:31:25,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 568738 states and 605693 transitions. [2022-12-13 11:31:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2022-12-13 11:31:25,678 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:25,678 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:25,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 11:31:25,678 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:25,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:25,679 INFO L85 PathProgramCache]: Analyzing trace with hash -349079334, now seen corresponding path program 1 times [2022-12-13 11:31:25,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:25,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606206486] [2022-12-13 11:31:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:25,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2022-12-13 11:31:26,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:26,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606206486] [2022-12-13 11:31:26,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606206486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:26,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:26,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:31:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601995368] [2022-12-13 11:31:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:26,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:26,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:26,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:26,414 INFO L87 Difference]: Start difference. First operand 568738 states and 605693 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:35,934 INFO L93 Difference]: Finished difference Result 1306728 states and 1398112 transitions. [2022-12-13 11:31:35,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:35,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 1113 [2022-12-13 11:31:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:36,905 INFO L225 Difference]: With dead ends: 1306728 [2022-12-13 11:31:36,905 INFO L226 Difference]: Without dead ends: 740722 [2022-12-13 11:31:37,098 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 [2022-12-13 11:31:37,099 INFO L413 NwaCegarLoop]: 2178 mSDtfsCounter, 1552 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 5712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:37,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 2361 Invalid, 5712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 11:31:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740722 states. [2022-12-13 11:31:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740722 to 686114. [2022-12-13 11:31:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686114 states, 686113 states have (on average 1.0665823268178858) internal successors, (731796), 686113 states have internal predecessors, (731796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686114 states to 686114 states and 731796 transitions. [2022-12-13 11:31:44,491 INFO L78 Accepts]: Start accepts. Automaton has 686114 states and 731796 transitions. Word has length 1113 [2022-12-13 11:31:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:44,491 INFO L495 AbstractCegarLoop]: Abstraction has 686114 states and 731796 transitions. [2022-12-13 11:31:44,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 686114 states and 731796 transitions. [2022-12-13 11:31:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2022-12-13 11:31:44,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:44,502 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:44,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:31:44,502 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1032936258, now seen corresponding path program 1 times [2022-12-13 11:31:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818681363] [2022-12-13 11:31:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:44,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1460 backedges. 340 proven. 1026 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-12-13 11:31:48,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:48,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818681363] [2022-12-13 11:31:48,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818681363] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:31:48,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204300859] [2022-12-13 11:31:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:48,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:48,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:31:48,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:31:48,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:31:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:48,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:31:48,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:31:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1460 backedges. 567 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2022-12-13 11:31:48,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:31:48,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204300859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:48,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:31:48,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 11:31:48,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368719222] [2022-12-13 11:31:48,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:48,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:48,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:48,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:31:48,565 INFO L87 Difference]: Start difference. First operand 686114 states and 731796 transitions. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:58,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:58,661 INFO L93 Difference]: Finished difference Result 1451512 states and 1553634 transitions. [2022-12-13 11:31:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:58,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 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 1142 [2022-12-13 11:31:58,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:59,686 INFO L225 Difference]: With dead ends: 1451512 [2022-12-13 11:31:59,686 INFO L226 Difference]: Without dead ends: 768130 [2022-12-13 11:32:00,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 1142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:32:00,154 INFO L413 NwaCegarLoop]: 2767 mSDtfsCounter, 1350 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 5641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:00,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2935 Invalid, 5641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-13 11:32:00,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768130 states. [2022-12-13 11:32:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768130 to 761184. [2022-12-13 11:32:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761184 states, 761183 states have (on average 1.0613111433124491) internal successors, (807852), 761183 states have internal predecessors, (807852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761184 states to 761184 states and 807852 transitions. [2022-12-13 11:32:08,430 INFO L78 Accepts]: Start accepts. Automaton has 761184 states and 807852 transitions. Word has length 1142 [2022-12-13 11:32:08,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:32:08,431 INFO L495 AbstractCegarLoop]: Abstraction has 761184 states and 807852 transitions. [2022-12-13 11:32:08,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 761184 states and 807852 transitions. [2022-12-13 11:32:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1279 [2022-12-13 11:32:08,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:32:08,461 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:08,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:32:08,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:08,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:32:08,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1268379762, now seen corresponding path program 1 times [2022-12-13 11:32:08,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:08,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230497029] [2022-12-13 11:32:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 835 proven. 0 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2022-12-13 11:32:09,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230497029] [2022-12-13 11:32:09,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230497029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:32:09,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:32:09,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:32:09,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167811879] [2022-12-13 11:32:09,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:32:09,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:32:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:32:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:32:09,853 INFO L87 Difference]: Start difference. First operand 761184 states and 807852 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:21,672 INFO L93 Difference]: Finished difference Result 1706635 states and 1811733 transitions. [2022-12-13 11:32:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:32:21,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 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 1278 [2022-12-13 11:32:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:22,840 INFO L225 Difference]: With dead ends: 1706635 [2022-12-13 11:32:22,840 INFO L226 Difference]: Without dead ends: 948183 [2022-12-13 11:32:23,321 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 [2022-12-13 11:32:23,322 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 1541 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 1576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 5582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1576 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:23,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1363 Invalid, 5582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1576 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-12-13 11:32:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948183 states. [2022-12-13 11:32:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948183 to 914050. [2022-12-13 11:32:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914050 states, 914049 states have (on average 1.0513954941146482) internal successors, (961027), 914049 states have internal predecessors, (961027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914050 states to 914050 states and 961027 transitions. [2022-12-13 11:32:33,017 INFO L78 Accepts]: Start accepts. Automaton has 914050 states and 961027 transitions. Word has length 1278 [2022-12-13 11:32:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:32:33,018 INFO L495 AbstractCegarLoop]: Abstraction has 914050 states and 961027 transitions. [2022-12-13 11:32:33,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 914050 states and 961027 transitions. [2022-12-13 11:32:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2022-12-13 11:32:33,052 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:32:33,052 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:33,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:32:33,053 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:32:33,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:33,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1882750038, now seen corresponding path program 1 times [2022-12-13 11:32:33,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:33,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749522890] [2022-12-13 11:32:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:33,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1130 proven. 485 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2022-12-13 11:32:37,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:37,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749522890] [2022-12-13 11:32:37,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749522890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:32:37,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398361759] [2022-12-13 11:32:37,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:37,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:37,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:32:37,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:32:37,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32a7fb90-e005-4be8-b619-48e4ce355ecb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:32:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:37,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:32:37,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:32:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 1411 trivial. 0 not checked. [2022-12-13 11:32:37,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:32:37,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398361759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:32:37,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:32:37,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 11:32:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299085045] [2022-12-13 11:32:37,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:32:37,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:32:37,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:37,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:32:37,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:32:37,950 INFO L87 Difference]: Start difference. First operand 914050 states and 961027 transitions. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:49,357 INFO L93 Difference]: Finished difference Result 1894938 states and 1992364 transitions. [2022-12-13 11:32:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:32:49,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 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 1674 [2022-12-13 11:32:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:50,449 INFO L225 Difference]: With dead ends: 1894938 [2022-12-13 11:32:50,449 INFO L226 Difference]: Without dead ends: 960414 [2022-12-13 11:32:50,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1679 GetRequests, 1673 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:32:50,850 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 2456 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 1301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1301 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:50,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 705 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1301 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-12-13 11:32:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960414 states.