./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro --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 8d5f2743e51cbbe46f8de63e434497edb332f77d30ade744101224af0fe29fdc --- 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-8393723 [2022-11-18 18:48:26,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:48:26,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:48:26,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:48:26,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:48:26,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:48:26,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:48:26,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:48:26,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:48:26,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:48:26,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:48:26,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:48:26,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:48:26,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:48:26,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:48:26,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:48:26,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:48:26,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:48:26,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:48:26,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:48:26,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:48:26,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:48:26,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:48:26,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:48:26,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:48:26,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:48:26,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:48:26,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:48:26,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:48:26,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:48:26,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:48:26,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:48:26,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:48:26,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:48:26,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:48:26,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:48:26,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:48:26,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:48:26,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:48:26,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:48:26,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:48:26,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:48:26,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:48:26,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:48:26,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:48:26,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:48:26,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:48:26,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:48:26,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:48:26,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:48:26,784 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:48:26,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:48:26,785 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:48:26,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:48:26,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:48:26,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:48:26,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:48:26,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:48:26,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:48:26,787 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:48:26,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:48:26,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:48:26,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:48:26,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:48:26,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:48:26,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:48:26,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:48:26,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:48:26,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:48:26,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:48:26,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:48:26,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:48:26,791 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:48:26,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:48:26,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:48:26,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d5f2743e51cbbe46f8de63e434497edb332f77d30ade744101224af0fe29fdc [2022-11-18 18:48:27,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:48:27,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:48:27,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:48:27,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:48:27,163 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:48:27,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c [2022-11-18 18:48:27,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/data/fb7ebf054/bc53b8ba966e4040b716ccb145ab6069/FLAG94a32ba58 [2022-11-18 18:48:28,552 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:48:28,553 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c [2022-11-18 18:48:28,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/data/fb7ebf054/bc53b8ba966e4040b716ccb145ab6069/FLAG94a32ba58 [2022-11-18 18:48:28,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/data/fb7ebf054/bc53b8ba966e4040b716ccb145ab6069 [2022-11-18 18:48:28,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:48:28,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:48:28,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:28,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:48:28,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:48:28,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:28" (1/1) ... [2022-11-18 18:48:28,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d297f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:28, skipping insertion in model container [2022-11-18 18:48:28,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:28" (1/1) ... [2022-11-18 18:48:28,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:48:29,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:48:31,773 WARN L234 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_c658ac42-f455-442d-9a15-9f1a15f7e4bd/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c[377340,377353] [2022-11-18 18:48:31,848 WARN L234 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_c658ac42-f455-442d-9a15-9f1a15f7e4bd/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c[383339,383352] [2022-11-18 18:48:32,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:32,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:48:33,554 WARN L234 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_c658ac42-f455-442d-9a15-9f1a15f7e4bd/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c[377340,377353] [2022-11-18 18:48:33,566 WARN L234 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_c658ac42-f455-442d-9a15-9f1a15f7e4bd/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c[383339,383352] [2022-11-18 18:48:33,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:33,676 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:48:33,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33 WrapperNode [2022-11-18 18:48:33,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:33,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:33,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:48:33,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:48:33,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:33,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,258 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2022-11-18 18:48:34,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:34,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:48:34,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:48:34,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:48:34,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,791 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:34,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:48:34,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:48:34,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:48:34,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:48:34,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (1/1) ... [2022-11-18 18:48:35,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:48:35,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:35,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:35,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:48:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:48:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 18:48:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 18:48:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 18:48:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 18:48:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 18:48:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 18:48:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 18:48:35,194 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 18:48:35,194 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 18:48:35,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 18:48:35,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:48:35,194 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 18:48:35,194 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 18:48:35,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:48:35,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:48:35,443 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:48:35,446 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:48:46,806 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:48:46,843 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:48:46,843 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 18:48:46,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:46 BoogieIcfgContainer [2022-11-18 18:48:46,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:48:46,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:48:46,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:48:46,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:48:46,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:48:28" (1/3) ... [2022-11-18 18:48:46,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c986d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:46, skipping insertion in model container [2022-11-18 18:48:46,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:33" (2/3) ... [2022-11-18 18:48:46,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c986d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:46, skipping insertion in model container [2022-11-18 18:48:46,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:46" (3/3) ... [2022-11-18 18:48:46,860 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.02.cil-1.c [2022-11-18 18:48:46,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:48:46,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:48:47,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:48:47,024 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;@e76bf2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:48:47,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:48:47,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 18:48:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:48:47,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:47,074 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] [2022-11-18 18:48:47,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2022-11-18 18:48:47,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:47,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263375125] [2022-11-18 18:48:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:47,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:48:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:48:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:47,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:48:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:47,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:48:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:48:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:47,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:47,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263375125] [2022-11-18 18:48:47,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263375125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:47,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:47,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:48:47,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679044203] [2022-11-18 18:48:47,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:47,830 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:49,408 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2022-11-18 18:48:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:48:49,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 18:48:49,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:49,453 INFO L225 Difference]: With dead ends: 4802 [2022-11-18 18:48:49,453 INFO L226 Difference]: Without dead ends: 2427 [2022-11-18 18:48:49,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:48:49,475 INFO L413 NwaCegarLoop]: 4168 mSDtfsCounter, 4436 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 16596 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:49,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 16596 Invalid, 714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 18:48:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-11-18 18:48:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2022-11-18 18:48:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-11-18 18:48:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2022-11-18 18:48:49,665 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2022-11-18 18:48:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:49,666 INFO L495 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2022-11-18 18:48:49,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2022-11-18 18:48:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:48:49,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:49,671 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] [2022-11-18 18:48:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:48:49,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:49,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:49,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2022-11-18 18:48:49,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:49,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105464074] [2022-11-18 18:48:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:49,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:48:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:48:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:49,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:48:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:48:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:48:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:49,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:49,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105464074] [2022-11-18 18:48:49,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105464074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:49,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:49,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:48:49,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829087558] [2022-11-18 18:48:49,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:49,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:48:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:49,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:48:49,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:48:49,916 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:51,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:51,688 INFO L93 Difference]: Finished difference Result 2807 states and 4974 transitions. [2022-11-18 18:48:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:48:51,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 18:48:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:51,708 INFO L225 Difference]: With dead ends: 2807 [2022-11-18 18:48:51,708 INFO L226 Difference]: Without dead ends: 2574 [2022-11-18 18:48:51,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:48:51,715 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4364 mSDsluCounter, 16427 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4373 SdHoareTripleChecker+Valid, 20577 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:51,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4373 Valid, 20577 Invalid, 997 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [43 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 18:48:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-18 18:48:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2473. [2022-11-18 18:48:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8188976377952757) internal successors, (4389), 2417 states have internal predecessors, (4389), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-11-18 18:48:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4470 transitions. [2022-11-18 18:48:51,832 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4470 transitions. Word has length 68 [2022-11-18 18:48:51,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:51,832 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4470 transitions. [2022-11-18 18:48:51,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:51,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4470 transitions. [2022-11-18 18:48:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:48:51,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:51,843 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] [2022-11-18 18:48:51,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:48:51,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2022-11-18 18:48:51,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:51,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588658116] [2022-11-18 18:48:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:51,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:48:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:48:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:52,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:48:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:52,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:48:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:48:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:52,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:52,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588658116] [2022-11-18 18:48:52,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588658116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:52,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:52,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:48:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570802989] [2022-11-18 18:48:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:52,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:48:52,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:48:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:48:52,138 INFO L87 Difference]: Start difference. First operand 2473 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:53,545 INFO L93 Difference]: Finished difference Result 3193 states and 5538 transitions. [2022-11-18 18:48:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:48:53,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 18:48:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:53,560 INFO L225 Difference]: With dead ends: 3193 [2022-11-18 18:48:53,561 INFO L226 Difference]: Without dead ends: 2851 [2022-11-18 18:48:53,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:48:53,572 INFO L413 NwaCegarLoop]: 4092 mSDtfsCounter, 4402 mSDsluCounter, 16249 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 20341 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:53,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 20341 Invalid, 903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:48:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-11-18 18:48:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2692. [2022-11-18 18:48:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2596 states have (on average 1.7927580893682589) internal successors, (4654), 2602 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-11-18 18:48:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4787 transitions. [2022-11-18 18:48:53,698 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4787 transitions. Word has length 68 [2022-11-18 18:48:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:53,698 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4787 transitions. [2022-11-18 18:48:53,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4787 transitions. [2022-11-18 18:48:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:48:53,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:53,701 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] [2022-11-18 18:48:53,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:48:53,702 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2022-11-18 18:48:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:53,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587600322] [2022-11-18 18:48:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:48:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:48:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:48:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:48:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:53,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:48:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:53,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:53,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587600322] [2022-11-18 18:48:53,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587600322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:53,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:53,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:48:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831505891] [2022-11-18 18:48:53,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:53,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:48:53,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:53,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:48:53,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:48:53,956 INFO L87 Difference]: Start difference. First operand 2692 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:55,787 INFO L93 Difference]: Finished difference Result 4037 states and 6769 transitions. [2022-11-18 18:48:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:48:55,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 18:48:55,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:55,805 INFO L225 Difference]: With dead ends: 4037 [2022-11-18 18:48:55,806 INFO L226 Difference]: Without dead ends: 3476 [2022-11-18 18:48:55,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:48:55,811 INFO L413 NwaCegarLoop]: 4145 mSDtfsCounter, 4374 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4382 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:55,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4382 Valid, 20561 Invalid, 1090 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 18:48:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-11-18 18:48:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3104. [2022-11-18 18:48:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2940 states have (on average 1.7530612244897958) internal successors, (5154), 2950 states have internal predecessors, (5154), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-11-18 18:48:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5389 transitions. [2022-11-18 18:48:56,012 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5389 transitions. Word has length 68 [2022-11-18 18:48:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:56,013 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 5389 transitions. [2022-11-18 18:48:56,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5389 transitions. [2022-11-18 18:48:56,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:48:56,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:56,017 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] [2022-11-18 18:48:56,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:48:56,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2022-11-18 18:48:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:56,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510205670] [2022-11-18 18:48:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:56,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:48:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:56,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:48:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:48:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:48:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:48:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:56,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510205670] [2022-11-18 18:48:56,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510205670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:56,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:56,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:48:56,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519354627] [2022-11-18 18:48:56,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:56,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:48:56,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:48:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:48:56,238 INFO L87 Difference]: Start difference. First operand 3104 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:57,861 INFO L93 Difference]: Finished difference Result 5435 states and 8809 transitions. [2022-11-18 18:48:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:48:57,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 18:48:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:57,888 INFO L225 Difference]: With dead ends: 5435 [2022-11-18 18:48:57,888 INFO L226 Difference]: Without dead ends: 4462 [2022-11-18 18:48:57,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:48:57,896 INFO L413 NwaCegarLoop]: 4146 mSDtfsCounter, 4376 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4388 SdHoareTripleChecker+Valid, 20565 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:57,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4388 Valid, 20565 Invalid, 953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:48:57,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-11-18 18:48:58,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 3941. [2022-11-18 18:48:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3645 states have (on average 1.696570644718793) internal successors, (6184), 3663 states have internal predecessors, (6184), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-18 18:48:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6633 transitions. [2022-11-18 18:48:58,244 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6633 transitions. Word has length 68 [2022-11-18 18:48:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:58,244 INFO L495 AbstractCegarLoop]: Abstraction has 3941 states and 6633 transitions. [2022-11-18 18:48:58,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6633 transitions. [2022-11-18 18:48:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:48:58,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:58,249 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] [2022-11-18 18:48:58,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:48:58,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:58,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:58,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2022-11-18 18:48:58,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:58,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942697656] [2022-11-18 18:48:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:58,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:48:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:58,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:48:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:48:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:48:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:58,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:48:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:58,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:58,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942697656] [2022-11-18 18:48:58,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942697656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:58,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:58,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:48:58,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978342365] [2022-11-18 18:48:58,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:58,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:58,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:58,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:58,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:58,374 INFO L87 Difference]: Start difference. First operand 3941 states and 6633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:48:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:59,904 INFO L93 Difference]: Finished difference Result 7278 states and 11576 transitions. [2022-11-18 18:48:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:48:59,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 18:48:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:59,934 INFO L225 Difference]: With dead ends: 7278 [2022-11-18 18:48:59,935 INFO L226 Difference]: Without dead ends: 5469 [2022-11-18 18:48:59,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:48:59,950 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4503 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4528 SdHoareTripleChecker+Valid, 16414 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:59,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4528 Valid, 16414 Invalid, 846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:48:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2022-11-18 18:49:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4882. [2022-11-18 18:49:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4428 states have (on average 1.6456639566395663) internal successors, (7287), 4463 states have internal predecessors, (7287), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-11-18 18:49:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7956 transitions. [2022-11-18 18:49:00,289 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7956 transitions. Word has length 68 [2022-11-18 18:49:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:00,290 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 7956 transitions. [2022-11-18 18:49:00,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:49:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7956 transitions. [2022-11-18 18:49:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 18:49:00,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:00,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:00,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:49:00,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2022-11-18 18:49:00,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:00,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909558177] [2022-11-18 18:49:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:49:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:49:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:49:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:49:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:49:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 18:49:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 18:49:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 18:49:00,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:00,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909558177] [2022-11-18 18:49:00,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909558177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:00,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912815074] [2022-11-18 18:49:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:00,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:00,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:00,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:00,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:49:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:00,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:49:00,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:49:00,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:00,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912815074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:00,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:00,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-18 18:49:00,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5356366] [2022-11-18 18:49:00,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:00,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:00,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:00,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:00,907 INFO L87 Difference]: Start difference. First operand 4882 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:49:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:01,448 INFO L93 Difference]: Finished difference Result 10239 states and 15790 transitions. [2022-11-18 18:49:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:01,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-11-18 18:49:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:01,498 INFO L225 Difference]: With dead ends: 10239 [2022-11-18 18:49:01,499 INFO L226 Difference]: Without dead ends: 7489 [2022-11-18 18:49:01,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:01,511 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4098 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:01,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:49:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-11-18 18:49:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7435. [2022-11-18 18:49:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7435 states, 6567 states have (on average 1.5784985533729252) internal successors, (10366), 6635 states have internal predecessors, (10366), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-11-18 18:49:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11621 transitions. [2022-11-18 18:49:02,056 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11621 transitions. Word has length 110 [2022-11-18 18:49:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:02,057 INFO L495 AbstractCegarLoop]: Abstraction has 7435 states and 11621 transitions. [2022-11-18 18:49:02,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:49:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11621 transitions. [2022-11-18 18:49:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 18:49:02,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:02,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:02,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:02,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:49:02,277 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:02,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2022-11-18 18:49:02,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:02,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926049802] [2022-11-18 18:49:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:49:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:49:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:49:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:49:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:49:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 18:49:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 18:49:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 18:49:02,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:02,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926049802] [2022-11-18 18:49:02,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926049802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:02,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102700010] [2022-11-18 18:49:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:02,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:02,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:02,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:49:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:49:02,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:49:02,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:02,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102700010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:02,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:02,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 18:49:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294512248] [2022-11-18 18:49:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:02,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:02,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:02,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:02,702 INFO L87 Difference]: Start difference. First operand 7435 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 18:49:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:03,508 INFO L93 Difference]: Finished difference Result 17751 states and 26795 transitions. [2022-11-18 18:49:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:03,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-11-18 18:49:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:03,586 INFO L225 Difference]: With dead ends: 17751 [2022-11-18 18:49:03,586 INFO L226 Difference]: Without dead ends: 12449 [2022-11-18 18:49:03,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:03,609 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 154 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:03,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:49:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-11-18 18:49:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12449. [2022-11-18 18:49:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10768 states have (on average 1.5169947994056463) internal successors, (16335), 10885 states have internal predecessors, (16335), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-11-18 18:49:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18906 transitions. [2022-11-18 18:49:04,673 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18906 transitions. Word has length 110 [2022-11-18 18:49:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:04,674 INFO L495 AbstractCegarLoop]: Abstraction has 12449 states and 18906 transitions. [2022-11-18 18:49:04,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 18:49:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18906 transitions. [2022-11-18 18:49:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 18:49:04,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:04,710 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:04,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:04,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:04,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:04,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:04,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2022-11-18 18:49:04,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:04,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56092475] [2022-11-18 18:49:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:04,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:49:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:49:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:49:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:49:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:49:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 18:49:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 18:49:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 18:49:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 18:49:05,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:05,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56092475] [2022-11-18 18:49:05,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56092475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:05,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561741781] [2022-11-18 18:49:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:05,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:05,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:05,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:05,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:49:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:05,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:49:05,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:49:05,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:05,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561741781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:05,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:05,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-18 18:49:05,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248570127] [2022-11-18 18:49:05,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:05,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:05,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:05,615 INFO L87 Difference]: Start difference. First operand 12449 states and 18906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:49:07,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:07,003 INFO L93 Difference]: Finished difference Result 32641 states and 48463 transitions. [2022-11-18 18:49:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:07,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-11-18 18:49:07,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:07,118 INFO L225 Difference]: With dead ends: 32641 [2022-11-18 18:49:07,118 INFO L226 Difference]: Without dead ends: 22329 [2022-11-18 18:49:07,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:07,166 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4056 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:07,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 4318 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:49:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2022-11-18 18:49:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 22119. [2022-11-18 18:49:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 18858 states have (on average 1.4761374482978047) internal successors, (27837), 19089 states have internal predecessors, (27837), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-11-18 18:49:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 32744 transitions. [2022-11-18 18:49:09,053 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 32744 transitions. Word has length 142 [2022-11-18 18:49:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:09,054 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 32744 transitions. [2022-11-18 18:49:09,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:49:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 32744 transitions. [2022-11-18 18:49:09,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 18:49:09,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:09,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 18:49:09,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:09,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:09,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2022-11-18 18:49:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:09,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185809032] [2022-11-18 18:49:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:49:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:49:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:49:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:49:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:49:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 18:49:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 18:49:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 18:49:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 18:49:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 18:49:09,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:09,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185809032] [2022-11-18 18:49:09,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185809032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:09,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180389232] [2022-11-18 18:49:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:09,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:09,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:09,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:49:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:49:09,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:49:09,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:09,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180389232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:09,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:09,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 18:49:09,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118799567] [2022-11-18 18:49:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:09,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:09,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:09,936 INFO L87 Difference]: Start difference. First operand 22119 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:49:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:11,620 INFO L93 Difference]: Finished difference Result 44457 states and 65784 transitions. [2022-11-18 18:49:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-11-18 18:49:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:11,733 INFO L225 Difference]: With dead ends: 44457 [2022-11-18 18:49:11,733 INFO L226 Difference]: Without dead ends: 24473 [2022-11-18 18:49:11,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:11,801 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4075 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:11,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:49:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24473 states. [2022-11-18 18:49:13,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24473 to 24473. [2022-11-18 18:49:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24473 states, 21000 states have (on average 1.4191904761904761) internal successors, (29803), 21231 states have internal predecessors, (29803), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-11-18 18:49:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24473 states to 24473 states and 34832 transitions. [2022-11-18 18:49:13,890 INFO L78 Accepts]: Start accepts. Automaton has 24473 states and 34832 transitions. Word has length 159 [2022-11-18 18:49:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:13,891 INFO L495 AbstractCegarLoop]: Abstraction has 24473 states and 34832 transitions. [2022-11-18 18:49:13,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:49:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 24473 states and 34832 transitions. [2022-11-18 18:49:13,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 18:49:13,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:13,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 18:49:13,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:14,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:49:14,191 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2022-11-18 18:49:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:14,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954235267] [2022-11-18 18:49:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:14,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:49:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:49:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:49:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:49:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:49:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 18:49:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 18:49:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 18:49:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 18:49:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 18:49:14,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:14,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954235267] [2022-11-18 18:49:14,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954235267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:14,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954466487] [2022-11-18 18:49:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:14,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:14,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:14,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:14,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:49:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:14,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:14,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 18:49:14,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:14,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954466487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:14,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:14,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 18:49:14,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320896608] [2022-11-18 18:49:14,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:14,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:14,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:14,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:14,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:14,693 INFO L87 Difference]: Start difference. First operand 24473 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 18:49:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:16,847 INFO L93 Difference]: Finished difference Result 41324 states and 58008 transitions. [2022-11-18 18:49:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:16,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2022-11-18 18:49:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:16,959 INFO L225 Difference]: With dead ends: 41324 [2022-11-18 18:49:16,959 INFO L226 Difference]: Without dead ends: 26013 [2022-11-18 18:49:16,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:16,991 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4088 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:16,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4325 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:49:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26013 states. [2022-11-18 18:49:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26013 to 25873. [2022-11-18 18:49:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25873 states, 22288 states have (on average 1.3940685570710696) internal successors, (31071), 22519 states have internal predecessors, (31071), 1943 states have call successors, (1943), 1448 states have call predecessors, (1943), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-11-18 18:49:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25873 states to 25873 states and 36232 transitions. [2022-11-18 18:49:18,931 INFO L78 Accepts]: Start accepts. Automaton has 25873 states and 36232 transitions. Word has length 159 [2022-11-18 18:49:18,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:18,932 INFO L495 AbstractCegarLoop]: Abstraction has 25873 states and 36232 transitions. [2022-11-18 18:49:18,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 18:49:18,932 INFO L276 IsEmpty]: Start isEmpty. Operand 25873 states and 36232 transitions. [2022-11-18 18:49:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 18:49:18,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:18,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 18:49:18,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:19,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:49:19,192 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2022-11-18 18:49:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:19,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820131970] [2022-11-18 18:49:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:49:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:49:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:49:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:49:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:49:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:49:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 18:49:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 18:49:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 18:49:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 18:49:19,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820131970] [2022-11-18 18:49:19,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820131970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028545818] [2022-11-18 18:49:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:19,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:19,418 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:19,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:49:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:19,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 18:49:19,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:19,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028545818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:19,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:19,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 18:49:19,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767135739] [2022-11-18 18:49:19,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:19,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:19,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:19,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:19,664 INFO L87 Difference]: Start difference. First operand 25873 states and 36232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 18:49:23,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:23,059 INFO L93 Difference]: Finished difference Result 70245 states and 97750 transitions. [2022-11-18 18:49:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:23,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-11-18 18:49:23,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:23,264 INFO L225 Difference]: With dead ends: 70245 [2022-11-18 18:49:23,264 INFO L226 Difference]: Without dead ends: 46511 [2022-11-18 18:49:23,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:23,318 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4102 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:23,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4334 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:49:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46511 states. [2022-11-18 18:49:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46511 to 45781. [2022-11-18 18:49:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45781 states, 39030 states have (on average 1.3636945939021266) internal successors, (53225), 39491 states have internal predecessors, (53225), 3677 states have call successors, (3677), 2688 states have call predecessors, (3677), 3072 states have return successors, (7178), 3665 states have call predecessors, (7178), 3677 states have call successors, (7178) [2022-11-18 18:49:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45781 states to 45781 states and 64080 transitions. [2022-11-18 18:49:27,107 INFO L78 Accepts]: Start accepts. Automaton has 45781 states and 64080 transitions. Word has length 160 [2022-11-18 18:49:27,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:27,108 INFO L495 AbstractCegarLoop]: Abstraction has 45781 states and 64080 transitions. [2022-11-18 18:49:27,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 18:49:27,108 INFO L276 IsEmpty]: Start isEmpty. Operand 45781 states and 64080 transitions. [2022-11-18 18:49:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 18:49:27,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:27,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 18:49:27,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 18:49:27,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:27,436 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:27,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2022-11-18 18:49:27,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:27,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593371459] [2022-11-18 18:49:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:27,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:49:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:49:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:49:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:49:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:49:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:49:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 18:49:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 18:49:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 18:49:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 18:49:27,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593371459] [2022-11-18 18:49:27,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593371459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:27,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040074173] [2022-11-18 18:49:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:27,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:27,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:27,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:27,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:49:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:27,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:49:27,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:49:27,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:27,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040074173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:27,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:27,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 18:49:27,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555372439] [2022-11-18 18:49:27,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:27,937 INFO L87 Difference]: Start difference. First operand 45781 states and 64080 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:49:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:30,928 INFO L93 Difference]: Finished difference Result 75161 states and 105873 transitions. [2022-11-18 18:49:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:30,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-11-18 18:49:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:31,244 INFO L225 Difference]: With dead ends: 75161 [2022-11-18 18:49:31,245 INFO L226 Difference]: Without dead ends: 40527 [2022-11-18 18:49:31,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:31,318 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:31,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:49:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40527 states. [2022-11-18 18:49:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40527 to 29943. [2022-11-18 18:49:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29943 states, 25784 states have (on average 1.3390862550418865) internal successors, (34527), 26025 states have internal predecessors, (34527), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3934), 2229 states have call predecessors, (3934), 2245 states have call successors, (3934) [2022-11-18 18:49:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 40706 transitions. [2022-11-18 18:49:33,917 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 40706 transitions. Word has length 160 [2022-11-18 18:49:33,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:33,918 INFO L495 AbstractCegarLoop]: Abstraction has 29943 states and 40706 transitions. [2022-11-18 18:49:33,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:49:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 40706 transitions. [2022-11-18 18:49:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 18:49:33,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:33,962 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 18:49:33,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:34,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:34,168 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:34,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2022-11-18 18:49:34,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:34,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047273416] [2022-11-18 18:49:34,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:34,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 18:49:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:49:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:49:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:49:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:49:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:49:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 18:49:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 18:49:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 18:49:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 18:49:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 18:49:34,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:34,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047273416] [2022-11-18 18:49:34,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047273416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:34,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862950790] [2022-11-18 18:49:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:34,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:34,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:34,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:34,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c658ac42-f455-442d-9a15-9f1a15f7e4bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:49:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:34,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 18:49:34,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:34,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862950790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:34,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:34,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 18:49:34,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532183653] [2022-11-18 18:49:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:34,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:34,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:34,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:34,723 INFO L87 Difference]: Start difference. First operand 29943 states and 40706 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 18:49:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:38,956 INFO L93 Difference]: Finished difference Result 82801 states and 112154 transitions. [2022-11-18 18:49:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-11-18 18:49:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:39,157 INFO L225 Difference]: With dead ends: 82801 [2022-11-18 18:49:39,158 INFO L226 Difference]: Without dead ends: 55005 [2022-11-18 18:49:39,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:39,227 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4098 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:39,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:49:39,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55005 states.