./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.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_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/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_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/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_4fb16621-4274-4ebf-810b-85a7e113e551/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 5692c849f4d89bdffd108b63efd7f8fc3dfb9eaa92d6e9ffe082f62ca54e1100 --- 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 12:37:13,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:37:13,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:37:13,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:37:13,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:37:13,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:37:13,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:37:13,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:37:13,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:37:13,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:37:13,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:37:13,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:37:13,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:37:13,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:37:13,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:37:13,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:37:13,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:37:13,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:37:13,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:37:13,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:37:13,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:37:13,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:37:13,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:37:13,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:37:13,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:37:13,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:37:13,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:37:13,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:37:13,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:37:13,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:37:13,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:37:13,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:37:13,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:37:13,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:37:13,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:37:13,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:37:13,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:37:13,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:37:13,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:37:13,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:37:13,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:37:13,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:37:13,740 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:37:13,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:37:13,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:37:13,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:37:13,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:37:13,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:37:13,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:37:13,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:37:13,746 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:37:13,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:37:13,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:37:13,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:37:13,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:37:13,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:37:13,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:37:13,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:37:13,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:37:13,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:37:13,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:37:13,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:37:13,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:37:13,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:37:13,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:37:13,749 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:37:13,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:37:13,749 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:37:13,749 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_4fb16621-4274-4ebf-810b-85a7e113e551/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5692c849f4d89bdffd108b63efd7f8fc3dfb9eaa92d6e9ffe082f62ca54e1100 [2022-12-13 12:37:13,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:37:13,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:37:13,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:37:13,937 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:37:13,937 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:37:13,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2022-12-13 12:37:16,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:37:16,639 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:37:16,639 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2022-12-13 12:37:16,647 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/data/d486263af/afd5a6bd420a4d3099ee66e1c8f0d991/FLAGfd521037a [2022-12-13 12:37:17,014 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/data/d486263af/afd5a6bd420a4d3099ee66e1c8f0d991 [2022-12-13 12:37:17,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:37:17,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:37:17,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:37:17,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:37:17,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:37:17,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317bc50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17, skipping insertion in model container [2022-12-13 12:37:17,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:37:17,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:37:17,195 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_4fb16621-4274-4ebf-810b-85a7e113e551/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c[16964,16977] [2022-12-13 12:37:17,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:37:17,206 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:37:17,246 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_4fb16621-4274-4ebf-810b-85a7e113e551/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c[16964,16977] [2022-12-13 12:37:17,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:37:17,257 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:37:17,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17 WrapperNode [2022-12-13 12:37:17,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:37:17,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:37:17,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:37:17,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:37:17,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,295 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 411 [2022-12-13 12:37:17,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:37:17,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:37:17,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:37:17,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:37:17,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,317 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:37:17,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:37:17,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:37:17,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:37:17,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (1/1) ... [2022-12-13 12:37:17,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:37:17,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:37:17,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:37:17,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:37:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:37:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:37:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:37:17,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:37:17,456 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:37:17,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:37:17,868 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:37:17,875 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:37:17,875 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 12:37:17,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:37:17 BoogieIcfgContainer [2022-12-13 12:37:17,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:37:17,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:37:17,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:37:17,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:37:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:37:17" (1/3) ... [2022-12-13 12:37:17,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a22a586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:37:17, skipping insertion in model container [2022-12-13 12:37:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:37:17" (2/3) ... [2022-12-13 12:37:17,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a22a586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:37:17, skipping insertion in model container [2022-12-13 12:37:17,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:37:17" (3/3) ... [2022-12-13 12:37:17,884 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2022-12-13 12:37:17,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:37:17,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:37:17,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:37:17,941 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;@7c499129, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:37:17,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:37:17,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 121 states have (on average 1.7603305785123966) internal successors, (213), 122 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 12:37:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 12:37:17,950 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:17,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:17,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1488018444, now seen corresponding path program 1 times [2022-12-13 12:37:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:17,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424941762] [2022-12-13 12:37:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:18,313 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 12:37:18,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:18,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424941762] [2022-12-13 12:37:18,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424941762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:18,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:18,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:37:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784404948] [2022-12-13 12:37:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:18,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:37:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:37:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:37:18,349 INFO L87 Difference]: Start difference. First operand has 123 states, 121 states have (on average 1.7603305785123966) internal successors, (213), 122 states have internal predecessors, (213), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 12:37:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:18,461 INFO L93 Difference]: Finished difference Result 199 states and 339 transitions. [2022-12-13 12:37:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:37:18,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-12-13 12:37:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:18,471 INFO L225 Difference]: With dead ends: 199 [2022-12-13 12:37:18,471 INFO L226 Difference]: Without dead ends: 119 [2022-12-13 12:37:18,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:37:18,477 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 3 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:18,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 772 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-13 12:37:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-12-13 12:37:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3983050847457628) internal successors, (165), 118 states have internal predecessors, (165), 0 states have call successors, (0), 0 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 12:37:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2022-12-13 12:37:18,511 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 37 [2022-12-13 12:37:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:18,511 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2022-12-13 12:37:18,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 12:37:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2022-12-13 12:37:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 12:37:18,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:18,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:18,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:37:18,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1130986818, now seen corresponding path program 1 times [2022-12-13 12:37:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:18,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957962447] [2022-12-13 12:37:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:18,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:18,632 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 12:37:18,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:18,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957962447] [2022-12-13 12:37:18,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957962447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:18,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:18,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:18,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854774674] [2022-12-13 12:37:18,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:18,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:18,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:18,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:18,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:18,636 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:37:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:18,666 INFO L93 Difference]: Finished difference Result 255 states and 387 transitions. [2022-12-13 12:37:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:18,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-12-13 12:37:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:18,668 INFO L225 Difference]: With dead ends: 255 [2022-12-13 12:37:18,669 INFO L226 Difference]: Without dead ends: 183 [2022-12-13 12:37:18,669 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 12:37:18,670 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 102 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:18,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 364 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-12-13 12:37:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2022-12-13 12:37:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 180 states have internal predecessors, (267), 0 states have call successors, (0), 0 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 12:37:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 267 transitions. [2022-12-13 12:37:18,687 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 267 transitions. Word has length 77 [2022-12-13 12:37:18,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:18,688 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 267 transitions. [2022-12-13 12:37:18,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:37:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 267 transitions. [2022-12-13 12:37:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 12:37:18,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:18,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:18,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:37:18,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash 473931391, now seen corresponding path program 1 times [2022-12-13 12:37:18,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:18,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991062475] [2022-12-13 12:37:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:18,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:18,779 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 12:37:18,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:18,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991062475] [2022-12-13 12:37:18,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991062475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:18,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:18,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:18,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44751773] [2022-12-13 12:37:18,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:18,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:18,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:18,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:18,787 INFO L87 Difference]: Start difference. First operand 181 states and 267 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:37:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:18,809 INFO L93 Difference]: Finished difference Result 433 states and 679 transitions. [2022-12-13 12:37:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:18,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-12-13 12:37:18,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:18,811 INFO L225 Difference]: With dead ends: 433 [2022-12-13 12:37:18,811 INFO L226 Difference]: Without dead ends: 299 [2022-12-13 12:37:18,812 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 12:37:18,813 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 90 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:18,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 335 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-12-13 12:37:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2022-12-13 12:37:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.5405405405405406) internal successors, (456), 296 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 12:37:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 456 transitions. [2022-12-13 12:37:18,830 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 456 transitions. Word has length 77 [2022-12-13 12:37:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:18,830 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 456 transitions. [2022-12-13 12:37:18,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:37:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 456 transitions. [2022-12-13 12:37:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 12:37:18,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:18,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:18,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:37:18,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1343515712, now seen corresponding path program 1 times [2022-12-13 12:37:18,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:18,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18185079] [2022-12-13 12:37:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:18,888 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 12:37:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:18,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18185079] [2022-12-13 12:37:18,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18185079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:18,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:18,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682751926] [2022-12-13 12:37:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:18,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:18,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:18,891 INFO L87 Difference]: Start difference. First operand 297 states and 456 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:37:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:18,918 INFO L93 Difference]: Finished difference Result 765 states and 1218 transitions. [2022-12-13 12:37:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:18,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-12-13 12:37:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:18,920 INFO L225 Difference]: With dead ends: 765 [2022-12-13 12:37:18,921 INFO L226 Difference]: Without dead ends: 515 [2022-12-13 12:37:18,921 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 12:37:18,922 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 86 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:18,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-12-13 12:37:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 513. [2022-12-13 12:37:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.5703125) internal successors, (804), 512 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 12:37:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 804 transitions. [2022-12-13 12:37:18,944 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 804 transitions. Word has length 77 [2022-12-13 12:37:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:18,945 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 804 transitions. [2022-12-13 12:37:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:37:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 804 transitions. [2022-12-13 12:37:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 12:37:18,946 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:18,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:18,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:37:18,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2057195905, now seen corresponding path program 1 times [2022-12-13 12:37:18,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:18,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203661321] [2022-12-13 12:37:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:19,069 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 12:37:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:19,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203661321] [2022-12-13 12:37:19,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203661321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:19,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:19,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:37:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628312301] [2022-12-13 12:37:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:19,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:37:19,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:37:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:37:19,071 INFO L87 Difference]: Start difference. First operand 513 states and 804 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:37:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:19,307 INFO L93 Difference]: Finished difference Result 3775 states and 6103 transitions. [2022-12-13 12:37:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:37:19,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-12-13 12:37:19,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:19,315 INFO L225 Difference]: With dead ends: 3775 [2022-12-13 12:37:19,315 INFO L226 Difference]: Without dead ends: 3309 [2022-12-13 12:37:19,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:37:19,318 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1700 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:19,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 1435 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:37:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2022-12-13 12:37:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 977. [2022-12-13 12:37:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.5819672131147542) internal successors, (1544), 976 states have internal predecessors, (1544), 0 states have call successors, (0), 0 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 12:37:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1544 transitions. [2022-12-13 12:37:19,389 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1544 transitions. Word has length 77 [2022-12-13 12:37:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:19,389 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1544 transitions. [2022-12-13 12:37:19,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:37:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1544 transitions. [2022-12-13 12:37:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 12:37:19,391 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:19,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:19,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:37:19,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1034759564, now seen corresponding path program 1 times [2022-12-13 12:37:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:19,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525251894] [2022-12-13 12:37:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:19,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:19,565 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 12:37:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:19,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525251894] [2022-12-13 12:37:19,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525251894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:19,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:19,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:37:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555139058] [2022-12-13 12:37:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:19,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:37:19,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:37:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:37:19,568 INFO L87 Difference]: Start difference. First operand 977 states and 1544 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 12:37:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:19,724 INFO L93 Difference]: Finished difference Result 1971 states and 3105 transitions. [2022-12-13 12:37:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:37:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-12-13 12:37:19,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:19,730 INFO L225 Difference]: With dead ends: 1971 [2022-12-13 12:37:19,730 INFO L226 Difference]: Without dead ends: 1969 [2022-12-13 12:37:19,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:37:19,731 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 333 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:19,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 735 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2022-12-13 12:37:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1025. [2022-12-13 12:37:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 1.5546875) internal successors, (1592), 1024 states have internal predecessors, (1592), 0 states have call successors, (0), 0 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 12:37:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1592 transitions. [2022-12-13 12:37:19,800 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1592 transitions. Word has length 78 [2022-12-13 12:37:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:19,800 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1592 transitions. [2022-12-13 12:37:19,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 12:37:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1592 transitions. [2022-12-13 12:37:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 12:37:19,801 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:19,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:19,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:37:19,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1960196679, now seen corresponding path program 1 times [2022-12-13 12:37:19,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:19,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184003072] [2022-12-13 12:37:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:19,862 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 12:37:19,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:19,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184003072] [2022-12-13 12:37:19,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184003072] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:19,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:19,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:19,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100527894] [2022-12-13 12:37:19,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:19,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:19,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:19,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:19,864 INFO L87 Difference]: Start difference. First operand 1025 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 12:37:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:19,987 INFO L93 Difference]: Finished difference Result 2861 states and 4482 transitions. [2022-12-13 12:37:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:19,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-12-13 12:37:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:19,992 INFO L225 Difference]: With dead ends: 2861 [2022-12-13 12:37:19,992 INFO L226 Difference]: Without dead ends: 1883 [2022-12-13 12:37:19,993 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 12:37:19,994 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 78 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:19,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 275 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2022-12-13 12:37:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1865. [2022-12-13 12:37:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1864 states have (on average 1.5493562231759657) internal successors, (2888), 1864 states have internal predecessors, (2888), 0 states have call successors, (0), 0 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 12:37:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2888 transitions. [2022-12-13 12:37:20,108 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2888 transitions. Word has length 79 [2022-12-13 12:37:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:20,108 INFO L495 AbstractCegarLoop]: Abstraction has 1865 states and 2888 transitions. [2022-12-13 12:37:20,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 12:37:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2888 transitions. [2022-12-13 12:37:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 12:37:20,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:20,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:37:20,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:20,110 INFO L85 PathProgramCache]: Analyzing trace with hash -533556915, now seen corresponding path program 1 times [2022-12-13 12:37:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:20,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037394398] [2022-12-13 12:37:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:20,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:20,149 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 12:37:20,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:20,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037394398] [2022-12-13 12:37:20,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037394398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:20,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:20,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347154047] [2022-12-13 12:37:20,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:20,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:20,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:20,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:20,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:20,151 INFO L87 Difference]: Start difference. First operand 1865 states and 2888 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 12:37:20,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:20,336 INFO L93 Difference]: Finished difference Result 5245 states and 8122 transitions. [2022-12-13 12:37:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:20,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-12-13 12:37:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:20,343 INFO L225 Difference]: With dead ends: 5245 [2022-12-13 12:37:20,344 INFO L226 Difference]: Without dead ends: 3427 [2022-12-13 12:37:20,345 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 12:37:20,346 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 94 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:20,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 349 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:20,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2022-12-13 12:37:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 3425. [2022-12-13 12:37:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3425 states, 3424 states have (on average 1.5327102803738317) internal successors, (5248), 3424 states have internal predecessors, (5248), 0 states have call successors, (0), 0 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 12:37:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3425 states to 3425 states and 5248 transitions. [2022-12-13 12:37:20,590 INFO L78 Accepts]: Start accepts. Automaton has 3425 states and 5248 transitions. Word has length 80 [2022-12-13 12:37:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:20,590 INFO L495 AbstractCegarLoop]: Abstraction has 3425 states and 5248 transitions. [2022-12-13 12:37:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 12:37:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3425 states and 5248 transitions. [2022-12-13 12:37:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 12:37:20,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:20,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:37:20,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:20,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash -948610003, now seen corresponding path program 1 times [2022-12-13 12:37:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:20,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911865575] [2022-12-13 12:37:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:20,635 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 12:37:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:20,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911865575] [2022-12-13 12:37:20,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911865575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:20,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:20,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:20,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027903170] [2022-12-13 12:37:20,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:20,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:20,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:20,636 INFO L87 Difference]: Start difference. First operand 3425 states and 5248 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 12:37:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:20,975 INFO L93 Difference]: Finished difference Result 9669 states and 14754 transitions. [2022-12-13 12:37:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:20,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-12-13 12:37:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:20,989 INFO L225 Difference]: With dead ends: 9669 [2022-12-13 12:37:20,989 INFO L226 Difference]: Without dead ends: 6291 [2022-12-13 12:37:20,992 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 12:37:20,992 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 98 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:20,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 362 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2022-12-13 12:37:21,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6289. [2022-12-13 12:37:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 6288 states have (on average 1.508905852417303) internal successors, (9488), 6288 states have internal predecessors, (9488), 0 states have call successors, (0), 0 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 12:37:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 9488 transitions. [2022-12-13 12:37:21,456 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 9488 transitions. Word has length 80 [2022-12-13 12:37:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:21,456 INFO L495 AbstractCegarLoop]: Abstraction has 6289 states and 9488 transitions. [2022-12-13 12:37:21,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 12:37:21,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 9488 transitions. [2022-12-13 12:37:21,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 12:37:21,457 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:21,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:21,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:37:21,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:21,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash -397116781, now seen corresponding path program 1 times [2022-12-13 12:37:21,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:21,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473254222] [2022-12-13 12:37:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:21,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:21,504 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 12:37:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:21,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473254222] [2022-12-13 12:37:21,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473254222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:21,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:21,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:21,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807078583] [2022-12-13 12:37:21,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:21,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:21,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:21,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:21,506 INFO L87 Difference]: Start difference. First operand 6289 states and 9488 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 12:37:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:22,064 INFO L93 Difference]: Finished difference Result 12440 states and 18838 transitions. [2022-12-13 12:37:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:22,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-12-13 12:37:22,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:22,094 INFO L225 Difference]: With dead ends: 12440 [2022-12-13 12:37:22,094 INFO L226 Difference]: Without dead ends: 9045 [2022-12-13 12:37:22,099 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 12:37:22,099 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 103 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:22,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 374 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:22,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2022-12-13 12:37:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 9043. [2022-12-13 12:37:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9043 states, 9042 states have (on average 1.4990046449900465) internal successors, (13554), 9042 states have internal predecessors, (13554), 0 states have call successors, (0), 0 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 12:37:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9043 states to 9043 states and 13554 transitions. [2022-12-13 12:37:22,778 INFO L78 Accepts]: Start accepts. Automaton has 9043 states and 13554 transitions. Word has length 81 [2022-12-13 12:37:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:22,778 INFO L495 AbstractCegarLoop]: Abstraction has 9043 states and 13554 transitions. [2022-12-13 12:37:22,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 12:37:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 9043 states and 13554 transitions. [2022-12-13 12:37:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 12:37:22,781 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:22,781 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:37:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:37:22,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1213534649, now seen corresponding path program 1 times [2022-12-13 12:37:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:22,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296323320] [2022-12-13 12:37:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:22,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:37:22,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:22,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296323320] [2022-12-13 12:37:22,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296323320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:22,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:22,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:37:22,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955528837] [2022-12-13 12:37:22,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:22,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:37:22,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:37:22,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:37:22,917 INFO L87 Difference]: Start difference. First operand 9043 states and 13554 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 12:37:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:24,796 INFO L93 Difference]: Finished difference Result 34753 states and 52617 transitions. [2022-12-13 12:37:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:37:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 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 111 [2022-12-13 12:37:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:24,851 INFO L225 Difference]: With dead ends: 34753 [2022-12-13 12:37:24,851 INFO L226 Difference]: Without dead ends: 30207 [2022-12-13 12:37:24,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:37:24,863 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1484 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:24,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1346 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:37:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30207 states. [2022-12-13 12:37:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30207 to 13491. [2022-12-13 12:37:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13491 states, 13490 states have (on average 1.4993328391401037) internal successors, (20226), 13490 states have internal predecessors, (20226), 0 states have call successors, (0), 0 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 12:37:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 20226 transitions. [2022-12-13 12:37:25,848 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 20226 transitions. Word has length 111 [2022-12-13 12:37:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:25,848 INFO L495 AbstractCegarLoop]: Abstraction has 13491 states and 20226 transitions. [2022-12-13 12:37:25,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 12:37:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 20226 transitions. [2022-12-13 12:37:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 12:37:25,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:25,855 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:37:25,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:37:25,855 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2077497925, now seen corresponding path program 1 times [2022-12-13 12:37:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:25,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020769403] [2022-12-13 12:37:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 12:37:25,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:25,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020769403] [2022-12-13 12:37:25,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020769403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:25,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:25,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:37:25,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445361251] [2022-12-13 12:37:25,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:25,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:37:25,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:25,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:37:25,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:37:25,999 INFO L87 Difference]: Start difference. First operand 13491 states and 20226 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 12:37:28,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:28,446 INFO L93 Difference]: Finished difference Result 39201 states and 59289 transitions. [2022-12-13 12:37:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:37:28,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 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 111 [2022-12-13 12:37:28,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:28,483 INFO L225 Difference]: With dead ends: 39201 [2022-12-13 12:37:28,483 INFO L226 Difference]: Without dead ends: 34655 [2022-12-13 12:37:28,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:37:28,492 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1584 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:28,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 1360 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:37:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34655 states. [2022-12-13 12:37:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34655 to 17939. [2022-12-13 12:37:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17939 states, 17938 states have (on average 1.4994982718251757) internal successors, (26898), 17938 states have internal predecessors, (26898), 0 states have call successors, (0), 0 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 12:37:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17939 states to 17939 states and 26898 transitions. [2022-12-13 12:37:29,798 INFO L78 Accepts]: Start accepts. Automaton has 17939 states and 26898 transitions. Word has length 111 [2022-12-13 12:37:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:29,798 INFO L495 AbstractCegarLoop]: Abstraction has 17939 states and 26898 transitions. [2022-12-13 12:37:29,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 12:37:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 17939 states and 26898 transitions. [2022-12-13 12:37:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 12:37:29,803 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:29,803 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:37:29,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:37:29,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:29,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:29,803 INFO L85 PathProgramCache]: Analyzing trace with hash 37847421, now seen corresponding path program 1 times [2022-12-13 12:37:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:29,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136977388] [2022-12-13 12:37:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:37:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:29,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136977388] [2022-12-13 12:37:29,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136977388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:29,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:29,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:37:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171447647] [2022-12-13 12:37:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:29,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:37:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:37:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:37:29,921 INFO L87 Difference]: Start difference. First operand 17939 states and 26898 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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 12:37:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:32,904 INFO L93 Difference]: Finished difference Result 43649 states and 65961 transitions. [2022-12-13 12:37:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:37:32,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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 111 [2022-12-13 12:37:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:32,937 INFO L225 Difference]: With dead ends: 43649 [2022-12-13 12:37:32,937 INFO L226 Difference]: Without dead ends: 39103 [2022-12-13 12:37:32,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:37:32,947 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1457 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:32,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 1406 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:37:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39103 states. [2022-12-13 12:37:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39103 to 22387. [2022-12-13 12:37:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22387 states, 22386 states have (on average 1.499597963012597) internal successors, (33570), 22386 states have internal predecessors, (33570), 0 states have call successors, (0), 0 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 12:37:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22387 states to 22387 states and 33570 transitions. [2022-12-13 12:37:34,587 INFO L78 Accepts]: Start accepts. Automaton has 22387 states and 33570 transitions. Word has length 111 [2022-12-13 12:37:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:34,587 INFO L495 AbstractCegarLoop]: Abstraction has 22387 states and 33570 transitions. [2022-12-13 12:37:34,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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 12:37:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 22387 states and 33570 transitions. [2022-12-13 12:37:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 12:37:34,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:34,592 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:37:34,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:37:34,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1617220774, now seen corresponding path program 1 times [2022-12-13 12:37:34,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:34,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75967519] [2022-12-13 12:37:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:34,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:37:34,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:34,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75967519] [2022-12-13 12:37:34,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75967519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:34,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:34,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:37:34,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407249814] [2022-12-13 12:37:34,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:34,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:37:34,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:34,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:37:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:37:34,706 INFO L87 Difference]: Start difference. First operand 22387 states and 33570 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 12:37:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:38,086 INFO L93 Difference]: Finished difference Result 48097 states and 72633 transitions. [2022-12-13 12:37:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:37:38,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 111 [2022-12-13 12:37:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:38,124 INFO L225 Difference]: With dead ends: 48097 [2022-12-13 12:37:38,124 INFO L226 Difference]: Without dead ends: 43551 [2022-12-13 12:37:38,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:37:38,133 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1290 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:38,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 1562 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:37:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43551 states. [2022-12-13 12:37:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43551 to 26835. [2022-12-13 12:37:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26835 states, 26834 states have (on average 1.4996646046060969) internal successors, (40242), 26834 states have internal predecessors, (40242), 0 states have call successors, (0), 0 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 12:37:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26835 states to 26835 states and 40242 transitions. [2022-12-13 12:37:40,241 INFO L78 Accepts]: Start accepts. Automaton has 26835 states and 40242 transitions. Word has length 111 [2022-12-13 12:37:40,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:40,242 INFO L495 AbstractCegarLoop]: Abstraction has 26835 states and 40242 transitions. [2022-12-13 12:37:40,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 12:37:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 26835 states and 40242 transitions. [2022-12-13 12:37:40,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 12:37:40,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:40,246 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:37:40,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:37:40,246 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2032273862, now seen corresponding path program 1 times [2022-12-13 12:37:40,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:40,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426422979] [2022-12-13 12:37:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:40,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:37:40,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:40,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426422979] [2022-12-13 12:37:40,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426422979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:40,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:40,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:37:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469316473] [2022-12-13 12:37:40,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:40,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:37:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:37:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:37:40,360 INFO L87 Difference]: Start difference. First operand 26835 states and 40242 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 12:37:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:44,285 INFO L93 Difference]: Finished difference Result 52545 states and 79305 transitions. [2022-12-13 12:37:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:37:44,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 111 [2022-12-13 12:37:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:44,328 INFO L225 Difference]: With dead ends: 52545 [2022-12-13 12:37:44,328 INFO L226 Difference]: Without dead ends: 47999 [2022-12-13 12:37:44,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:37:44,339 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1327 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:44,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1555 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:37:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47999 states. [2022-12-13 12:37:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47999 to 31283. [2022-12-13 12:37:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31283 states, 31282 states have (on average 1.499712294610319) internal successors, (46914), 31282 states have internal predecessors, (46914), 0 states have call successors, (0), 0 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 12:37:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31283 states to 31283 states and 46914 transitions. [2022-12-13 12:37:47,011 INFO L78 Accepts]: Start accepts. Automaton has 31283 states and 46914 transitions. Word has length 111 [2022-12-13 12:37:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:47,012 INFO L495 AbstractCegarLoop]: Abstraction has 31283 states and 46914 transitions. [2022-12-13 12:37:47,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 12:37:47,012 INFO L276 IsEmpty]: Start isEmpty. Operand 31283 states and 46914 transitions. [2022-12-13 12:37:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 12:37:47,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:47,016 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:37:47,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:37:47,016 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:47,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash 309000354, now seen corresponding path program 1 times [2022-12-13 12:37:47,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:47,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683583373] [2022-12-13 12:37:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:47,085 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 12:37:47,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:47,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683583373] [2022-12-13 12:37:47,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683583373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:47,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:47,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:47,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994260783] [2022-12-13 12:37:47,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:47,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:47,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:47,087 INFO L87 Difference]: Start difference. First operand 31283 states and 46914 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:37:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:49,920 INFO L93 Difference]: Finished difference Result 62519 states and 93780 transitions. [2022-12-13 12:37:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-12-13 12:37:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:49,949 INFO L225 Difference]: With dead ends: 62519 [2022-12-13 12:37:49,949 INFO L226 Difference]: Without dead ends: 31285 [2022-12-13 12:37:49,964 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 12:37:49,965 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 81 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:49,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 365 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31285 states. [2022-12-13 12:37:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31285 to 31283. [2022-12-13 12:37:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31283 states, 31282 states have (on average 1.488971293395563) internal successors, (46578), 31282 states have internal predecessors, (46578), 0 states have call successors, (0), 0 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 12:37:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31283 states to 31283 states and 46578 transitions. [2022-12-13 12:37:52,582 INFO L78 Accepts]: Start accepts. Automaton has 31283 states and 46578 transitions. Word has length 112 [2022-12-13 12:37:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:52,583 INFO L495 AbstractCegarLoop]: Abstraction has 31283 states and 46578 transitions. [2022-12-13 12:37:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:37:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 31283 states and 46578 transitions. [2022-12-13 12:37:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 12:37:52,585 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:52,585 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:52,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:37:52,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash 727441569, now seen corresponding path program 1 times [2022-12-13 12:37:52,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:52,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034953255] [2022-12-13 12:37:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:52,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:37:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:52,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034953255] [2022-12-13 12:37:52,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034953255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:52,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:52,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:37:52,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107553446] [2022-12-13 12:37:52,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:52,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:37:52,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:37:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:37:52,647 INFO L87 Difference]: Start difference. First operand 31283 states and 46578 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:37:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:37:54,033 INFO L93 Difference]: Finished difference Result 46903 states and 69844 transitions. [2022-12-13 12:37:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:37:54,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-12-13 12:37:54,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:37:54,048 INFO L225 Difference]: With dead ends: 46903 [2022-12-13 12:37:54,048 INFO L226 Difference]: Without dead ends: 15669 [2022-12-13 12:37:54,062 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 12:37:54,063 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 75 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:37:54,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 346 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:37:54,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15669 states. [2022-12-13 12:37:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15669 to 15667. [2022-12-13 12:37:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15667 states, 15666 states have (on average 1.477467126260692) internal successors, (23146), 15666 states have internal predecessors, (23146), 0 states have call successors, (0), 0 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 12:37:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15667 states to 15667 states and 23146 transitions. [2022-12-13 12:37:55,386 INFO L78 Accepts]: Start accepts. Automaton has 15667 states and 23146 transitions. Word has length 112 [2022-12-13 12:37:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:37:55,386 INFO L495 AbstractCegarLoop]: Abstraction has 15667 states and 23146 transitions. [2022-12-13 12:37:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:37:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 15667 states and 23146 transitions. [2022-12-13 12:37:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 12:37:55,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:37:55,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:55,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:37:55,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:37:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2126946336, now seen corresponding path program 1 times [2022-12-13 12:37:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:55,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063805390] [2022-12-13 12:37:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:37:55,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:55,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063805390] [2022-12-13 12:37:55,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063805390] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:37:55,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546459851] [2022-12-13 12:37:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:55,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:37:55,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:37:55,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:37:55,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:37:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:55,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:37:55,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:37:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:37:56,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:37:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:37:56,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546459851] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:37:56,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:37:56,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-12-13 12:37:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286782592] [2022-12-13 12:37:56,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:37:56,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:37:56,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:56,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:37:56,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:37:56,258 INFO L87 Difference]: Start difference. First operand 15667 states and 23146 transitions. Second operand has 14 states, 14 states have (on average 23.0) internal successors, (322), 14 states have internal predecessors, (322), 0 states have call successors, (0), 0 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 12:38:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:38:14,647 INFO L93 Difference]: Finished difference Result 160041 states and 233893 transitions. [2022-12-13 12:38:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 12:38:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.0) internal successors, (322), 14 states have internal predecessors, (322), 0 states have call successors, (0), 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 112 [2022-12-13 12:38:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:38:14,795 INFO L225 Difference]: With dead ends: 160041 [2022-12-13 12:38:14,795 INFO L226 Difference]: Without dead ends: 149287 [2022-12-13 12:38:14,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1707 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1005, Invalid=3965, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 12:38:14,818 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 6115 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6115 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:38:14,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6115 Valid, 2297 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 12:38:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149287 states. [2022-12-13 12:38:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149287 to 94627. [2022-12-13 12:38:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94627 states, 94626 states have (on average 1.4522224335806226) internal successors, (137418), 94626 states have internal predecessors, (137418), 0 states have call successors, (0), 0 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 12:38:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94627 states to 94627 states and 137418 transitions. [2022-12-13 12:38:24,935 INFO L78 Accepts]: Start accepts. Automaton has 94627 states and 137418 transitions. Word has length 112 [2022-12-13 12:38:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:38:24,935 INFO L495 AbstractCegarLoop]: Abstraction has 94627 states and 137418 transitions. [2022-12-13 12:38:24,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.0) internal successors, (322), 14 states have internal predecessors, (322), 0 states have call successors, (0), 0 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 12:38:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 94627 states and 137418 transitions. [2022-12-13 12:38:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 12:38:24,937 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:38:24,937 INFO L195 NwaCegarLoop]: trace histogram [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 12:38:24,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:38:25,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 12:38:25,139 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:38:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:38:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1460282405, now seen corresponding path program 1 times [2022-12-13 12:38:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:38:25,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490662908] [2022-12-13 12:38:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:38:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:38:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:38:25,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:38:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490662908] [2022-12-13 12:38:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490662908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:38:25,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:38:25,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:38:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670195373] [2022-12-13 12:38:25,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:38:25,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:38:25,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:38:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:38:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:38:25,285 INFO L87 Difference]: Start difference. First operand 94627 states and 137418 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:38:44,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:38:44,154 INFO L93 Difference]: Finished difference Result 172729 states and 251961 transitions. [2022-12-13 12:38:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:38:44,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 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 113 [2022-12-13 12:38:44,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:38:44,319 INFO L225 Difference]: With dead ends: 172729 [2022-12-13 12:38:44,319 INFO L226 Difference]: Without dead ends: 161471 [2022-12-13 12:38:44,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:38:44,346 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1181 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:38:44,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 2143 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:38:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161471 states. [2022-12-13 12:38:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161471 to 106419. [2022-12-13 12:38:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106419 states, 106418 states have (on average 1.4517280911124057) internal successors, (154490), 106418 states have internal predecessors, (154490), 0 states have call successors, (0), 0 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 12:38:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106419 states to 106419 states and 154490 transitions. [2022-12-13 12:38:56,764 INFO L78 Accepts]: Start accepts. Automaton has 106419 states and 154490 transitions. Word has length 113 [2022-12-13 12:38:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:38:56,764 INFO L495 AbstractCegarLoop]: Abstraction has 106419 states and 154490 transitions. [2022-12-13 12:38:56,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:38:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 106419 states and 154490 transitions. [2022-12-13 12:38:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 12:38:56,767 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:38:56,767 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:38:56,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:38:56,767 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:38:56,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:38:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash 923092720, now seen corresponding path program 1 times [2022-12-13 12:38:56,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:38:56,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491894154] [2022-12-13 12:38:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:38:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:38:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:38:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:38:56,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491894154] [2022-12-13 12:38:56,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491894154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:38:56,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:38:56,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:38:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004028554] [2022-12-13 12:38:56,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:38:56,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:38:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:38:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:38:56,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:38:56,830 INFO L87 Difference]: Start difference. First operand 106419 states and 154490 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 12:39:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:01,853 INFO L93 Difference]: Finished difference Result 147689 states and 213958 transitions. [2022-12-13 12:39:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:39:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-12-13 12:39:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:01,892 INFO L225 Difference]: With dead ends: 147689 [2022-12-13 12:39:01,892 INFO L226 Difference]: Without dead ends: 41319 [2022-12-13 12:39:01,924 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 12:39:01,924 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 63 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:01,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 336 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:39:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41319 states. [2022-12-13 12:39:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41319 to 41317. [2022-12-13 12:39:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41317 states, 41316 states have (on average 1.4251621647787782) internal successors, (58882), 41316 states have internal predecessors, (58882), 0 states have call successors, (0), 0 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 12:39:06,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41317 states to 41317 states and 58882 transitions. [2022-12-13 12:39:06,674 INFO L78 Accepts]: Start accepts. Automaton has 41317 states and 58882 transitions. Word has length 114 [2022-12-13 12:39:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:06,674 INFO L495 AbstractCegarLoop]: Abstraction has 41317 states and 58882 transitions. [2022-12-13 12:39:06,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 12:39:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 41317 states and 58882 transitions. [2022-12-13 12:39:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 12:39:06,676 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:06,676 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:39:06,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:39:06,676 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1268883318, now seen corresponding path program 1 times [2022-12-13 12:39:06,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:06,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997628954] [2022-12-13 12:39:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:06,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:39:06,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:06,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997628954] [2022-12-13 12:39:06,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997628954] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:39:06,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399840767] [2022-12-13 12:39:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:06,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:39:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:39:06,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:39:06,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:39:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:07,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 12:39:07,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:39:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:39:07,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:39:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:39:08,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399840767] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:39:08,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:39:08,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-12-13 12:39:08,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918296555] [2022-12-13 12:39:08,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:39:08,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 12:39:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 12:39:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:39:08,955 INFO L87 Difference]: Start difference. First operand 41317 states and 58882 transitions. Second operand has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 20 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 12:39:37,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:37,916 INFO L93 Difference]: Finished difference Result 231295 states and 327309 transitions. [2022-12-13 12:39:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 12:39:37,916 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 20 states have internal predecessors, (271), 0 states have call successors, (0), 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 116 [2022-12-13 12:39:37,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:38,141 INFO L225 Difference]: With dead ends: 231295 [2022-12-13 12:39:38,141 INFO L226 Difference]: Without dead ends: 197839 [2022-12-13 12:39:38,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 218 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=501, Invalid=1305, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 12:39:38,175 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2823 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2823 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:38,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2823 Valid, 2022 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 12:39:38,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197839 states. [2022-12-13 12:39:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197839 to 94436. [2022-12-13 12:39:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94436 states, 94435 states have (on average 1.4199714089055964) internal successors, (134095), 94435 states have internal predecessors, (134095), 0 states have call successors, (0), 0 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 12:39:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94436 states to 94436 states and 134095 transitions. [2022-12-13 12:39:52,096 INFO L78 Accepts]: Start accepts. Automaton has 94436 states and 134095 transitions. Word has length 116 [2022-12-13 12:39:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:52,096 INFO L495 AbstractCegarLoop]: Abstraction has 94436 states and 134095 transitions. [2022-12-13 12:39:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 20 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 12:39:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 94436 states and 134095 transitions. [2022-12-13 12:39:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 12:39:52,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:52,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:39:52,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:39:52,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:39:52,303 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:52,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:52,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2131828299, now seen corresponding path program 1 times [2022-12-13 12:39:52,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:52,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857027011] [2022-12-13 12:39:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:39:52,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:52,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857027011] [2022-12-13 12:39:52,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857027011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:52,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:52,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:39:52,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226820473] [2022-12-13 12:39:52,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:52,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:39:52,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:52,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:39:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:39:52,372 INFO L87 Difference]: Start difference. First operand 94436 states and 134095 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 12:39:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:59,499 INFO L93 Difference]: Finished difference Result 136316 states and 192743 transitions. [2022-12-13 12:39:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:39:59,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-12-13 12:39:59,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:59,548 INFO L225 Difference]: With dead ends: 136316 [2022-12-13 12:39:59,548 INFO L226 Difference]: Without dead ends: 51134 [2022-12-13 12:39:59,577 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 12:39:59,577 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 57 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:59,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 305 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:39:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51134 states. [2022-12-13 12:40:06,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51134 to 50502. [2022-12-13 12:40:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50502 states, 50501 states have (on average 1.3926258885962655) internal successors, (70329), 50501 states have internal predecessors, (70329), 0 states have call successors, (0), 0 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 12:40:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50502 states to 50502 states and 70329 transitions. [2022-12-13 12:40:06,728 INFO L78 Accepts]: Start accepts. Automaton has 50502 states and 70329 transitions. Word has length 116 [2022-12-13 12:40:06,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:40:06,728 INFO L495 AbstractCegarLoop]: Abstraction has 50502 states and 70329 transitions. [2022-12-13 12:40:06,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 12:40:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 50502 states and 70329 transitions. [2022-12-13 12:40:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 12:40:06,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:40:06,730 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:40:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:40:06,730 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:40:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1343706734, now seen corresponding path program 1 times [2022-12-13 12:40:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:06,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129881177] [2022-12-13 12:40:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:07,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:07,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129881177] [2022-12-13 12:40:07,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129881177] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:40:07,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850757124] [2022-12-13 12:40:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:07,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:40:07,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:40:07,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:40:07,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:40:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:07,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 12:40:07,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:40:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:08,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:40:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:09,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850757124] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:40:09,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:40:09,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2022-12-13 12:40:09,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365746587] [2022-12-13 12:40:09,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:40:09,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 12:40:09,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:09,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 12:40:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-12-13 12:40:09,680 INFO L87 Difference]: Start difference. First operand 50502 states and 70329 transitions. Second operand has 28 states, 28 states have (on average 11.392857142857142) internal successors, (319), 27 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 12:43:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:43:55,207 INFO L93 Difference]: Finished difference Result 1204961 states and 1666001 transitions. [2022-12-13 12:43:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-12-13 12:43:55,208 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.392857142857142) internal successors, (319), 27 states have internal predecessors, (319), 0 states have call successors, (0), 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 116 [2022-12-13 12:43:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:43:56,862 INFO L225 Difference]: With dead ends: 1204961 [2022-12-13 12:43:56,862 INFO L226 Difference]: Without dead ends: 1158392 [2022-12-13 12:43:57,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24856 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=6961, Invalid=53801, Unknown=0, NotChecked=0, Total=60762 [2022-12-13 12:43:57,191 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 11323 mSDsluCounter, 7238 mSDsCounter, 0 mSdLazyCounter, 7363 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11323 SdHoareTripleChecker+Valid, 7735 SdHoareTripleChecker+Invalid, 7460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 7363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:43:57,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11323 Valid, 7735 Invalid, 7460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 7363 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-12-13 12:43:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158392 states. [2022-12-13 12:45:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158392 to 358069. [2022-12-13 12:45:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358069 states, 358068 states have (on average 1.3775902901124926) internal successors, (493271), 358068 states have internal predecessors, (493271), 0 states have call successors, (0), 0 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 12:45:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358069 states to 358069 states and 493271 transitions. [2022-12-13 12:45:06,574 INFO L78 Accepts]: Start accepts. Automaton has 358069 states and 493271 transitions. Word has length 116 [2022-12-13 12:45:06,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:45:06,575 INFO L495 AbstractCegarLoop]: Abstraction has 358069 states and 493271 transitions. [2022-12-13 12:45:06,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.392857142857142) internal successors, (319), 27 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 12:45:06,575 INFO L276 IsEmpty]: Start isEmpty. Operand 358069 states and 493271 transitions. [2022-12-13 12:45:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 12:45:06,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:45:06,579 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:45:06,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:45:06,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb16621-4274-4ebf-810b-85a7e113e551/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:45:06,781 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:45:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:45:06,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2010193584, now seen corresponding path program 1 times [2022-12-13 12:45:06,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:45:06,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402927296] [2022-12-13 12:45:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:45:06,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:45:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:45:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:45:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:45:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402927296] [2022-12-13 12:45:06,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402927296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:45:06,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:45:06,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:45:06,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671198504] [2022-12-13 12:45:06,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:45:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:45:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:45:06,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:45:06,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:45:06,904 INFO L87 Difference]: Start difference. First operand 358069 states and 493271 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 12:45:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:45:40,312 INFO L93 Difference]: Finished difference Result 529924 states and 729643 transitions. [2022-12-13 12:45:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:45:40,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-12-13 12:45:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:45:40,579 INFO L225 Difference]: With dead ends: 529924 [2022-12-13 12:45:40,579 INFO L226 Difference]: Without dead ends: 202409 [2022-12-13 12:45:40,703 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 12:45:40,703 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 42 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:45:40,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 301 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:45:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202409 states. [2022-12-13 12:46:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202409 to 202407. [2022-12-13 12:46:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202407 states, 202406 states have (on average 1.3632303390215705) internal successors, (275926), 202406 states have internal predecessors, (275926), 0 states have call successors, (0), 0 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 12:46:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202407 states to 202407 states and 275926 transitions. [2022-12-13 12:46:14,288 INFO L78 Accepts]: Start accepts. Automaton has 202407 states and 275926 transitions. Word has length 116 [2022-12-13 12:46:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:46:14,289 INFO L495 AbstractCegarLoop]: Abstraction has 202407 states and 275926 transitions. [2022-12-13 12:46:14,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 12:46:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 202407 states and 275926 transitions. [2022-12-13 12:46:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 12:46:14,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:46:14,293 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:46:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 12:46:14,293 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:46:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:46:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1271793520, now seen corresponding path program 1 times [2022-12-13 12:46:14,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:46:14,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815004804] [2022-12-13 12:46:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:46:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:46:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:46:14,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:46:14,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815004804] [2022-12-13 12:46:14,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815004804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:46:14,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:46:14,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:46:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231138186] [2022-12-13 12:46:14,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:46:14,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:46:14,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:46:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:46:14,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:46:14,350 INFO L87 Difference]: Start difference. First operand 202407 states and 275926 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:46:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:46:34,611 INFO L93 Difference]: Finished difference Result 316872 states and 430879 transitions. [2022-12-13 12:46:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:46:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-12-13 12:46:34,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:46:34,757 INFO L225 Difference]: With dead ends: 316872 [2022-12-13 12:46:34,757 INFO L226 Difference]: Without dead ends: 130326 [2022-12-13 12:46:34,819 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 12:46:34,820 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 44 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:46:34,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 276 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:46:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130326 states. [2022-12-13 12:46:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130326 to 130324. [2022-12-13 12:46:55,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130324 states, 130323 states have (on average 1.341175387306922) internal successors, (174786), 130323 states have internal predecessors, (174786), 0 states have call successors, (0), 0 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 12:46:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130324 states to 130324 states and 174786 transitions. [2022-12-13 12:46:55,171 INFO L78 Accepts]: Start accepts. Automaton has 130324 states and 174786 transitions. Word has length 117 [2022-12-13 12:46:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:46:55,171 INFO L495 AbstractCegarLoop]: Abstraction has 130324 states and 174786 transitions. [2022-12-13 12:46:55,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:46:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 130324 states and 174786 transitions. [2022-12-13 12:46:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 12:46:55,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:46:55,174 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:46:55,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:46:55,174 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:46:55,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:46:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1648893718, now seen corresponding path program 1 times [2022-12-13 12:46:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:46:55,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825271369] [2022-12-13 12:46:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:46:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:46:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:46:55,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:46:55,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825271369] [2022-12-13 12:46:55,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825271369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:46:55,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:46:55,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:46:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429791591] [2022-12-13 12:46:55,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:46:55,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:46:55,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:46:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:46:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:46:55,206 INFO L87 Difference]: Start difference. First operand 130324 states and 174786 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:47:33,704 INFO L93 Difference]: Finished difference Result 370936 states and 498172 transitions. [2022-12-13 12:47:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:47:33,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-12-13 12:47:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:47:34,020 INFO L225 Difference]: With dead ends: 370936 [2022-12-13 12:47:34,020 INFO L226 Difference]: Without dead ends: 242356 [2022-12-13 12:47:34,094 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 12:47:34,094 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 74 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:47:34,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 382 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:47:34,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242356 states. [2022-12-13 12:48:12,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242356 to 229455. [2022-12-13 12:48:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229455 states, 229454 states have (on average 1.3328423126203945) internal successors, (305826), 229454 states have internal predecessors, (305826), 0 states have call successors, (0), 0 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 12:48:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229455 states to 229455 states and 305826 transitions. [2022-12-13 12:48:12,650 INFO L78 Accepts]: Start accepts. Automaton has 229455 states and 305826 transitions. Word has length 118 [2022-12-13 12:48:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:48:12,651 INFO L495 AbstractCegarLoop]: Abstraction has 229455 states and 305826 transitions. [2022-12-13 12:48:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:48:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 229455 states and 305826 transitions. [2022-12-13 12:48:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 12:48:12,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:48:12,656 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:48:12,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 12:48:12,656 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:48:12,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:48:12,656 INFO L85 PathProgramCache]: Analyzing trace with hash -788295980, now seen corresponding path program 1 times [2022-12-13 12:48:12,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:48:12,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383927740] [2022-12-13 12:48:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:48:12,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:48:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:48:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:48:12,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:48:12,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383927740] [2022-12-13 12:48:12,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383927740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:48:12,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:48:12,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:48:12,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145296229] [2022-12-13 12:48:12,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:48:12,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:48:12,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:48:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:48:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:48:12,805 INFO L87 Difference]: Start difference. First operand 229455 states and 305826 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:22,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:49:22,248 INFO L93 Difference]: Finished difference Result 649779 states and 862123 transitions. [2022-12-13 12:49:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:22,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-12-13 12:49:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:49:22,864 INFO L225 Difference]: With dead ends: 649779 [2022-12-13 12:49:22,864 INFO L226 Difference]: Without dead ends: 422070 [2022-12-13 12:49:23,005 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 12:49:23,006 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 79 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:49:23,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:49:23,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422070 states.