./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL --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 9c44d114d56c1766d1cbfa8e225f5145dcce7e8e615df451e987409645be250c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:58:49,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:58:49,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:58:49,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:58:49,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:58:49,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:58:49,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:58:49,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:58:49,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:58:49,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:58:49,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:58:49,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:58:49,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:58:49,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:58:49,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:58:49,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:58:49,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:58:49,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:58:49,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:58:49,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:58:49,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:58:49,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:58:49,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:58:49,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:58:49,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:58:49,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:58:49,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:58:49,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:58:49,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:58:49,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:58:49,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:58:49,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:58:49,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:58:49,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:58:49,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:58:49,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:58:49,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:58:49,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:58:49,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:58:49,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:58:49,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:58:49,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:58:49,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:58:49,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:58:49,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:58:49,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:58:49,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:58:49,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:58:49,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:58:49,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:58:49,684 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:58:49,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:58:49,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:58:49,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:58:49,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:58:49,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:58:49,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:58:49,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:58:49,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:58:49,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:58:49,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:58:49,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:58:49,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:58:49,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:58:49,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:58:49,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:58:49,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:58:49,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:58:49,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:58:49,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:58:49,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:58:49,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:58:49,689 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:58:49,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:58:49,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:58:49,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:58:49,689 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_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c44d114d56c1766d1cbfa8e225f5145dcce7e8e615df451e987409645be250c [2021-11-19 04:58:49,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:58:49,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:58:49,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:58:49,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:58:49,969 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:58:49,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c [2021-11-19 04:58:50,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/data/3b2290c98/3cf43450c7804851a13e0b0f7189247e/FLAGefc1242db [2021-11-19 04:58:51,299 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:58:51,301 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c [2021-11-19 04:58:51,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/data/3b2290c98/3cf43450c7804851a13e0b0f7189247e/FLAGefc1242db [2021-11-19 04:58:51,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/data/3b2290c98/3cf43450c7804851a13e0b0f7189247e [2021-11-19 04:58:51,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:58:51,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:58:51,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:58:51,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:58:51,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:58:51,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:51" (1/1) ... [2021-11-19 04:58:51,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f471333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:51, skipping insertion in model container [2021-11-19 04:58:51,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:51" (1/1) ... [2021-11-19 04:58:51,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:58:51,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:58:54,364 WARN L230 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_79258a43-3c71-417f-8ae6-fa74909caaac/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[380593,380606] [2021-11-19 04:58:54,403 WARN L230 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_79258a43-3c71-417f-8ae6-fa74909caaac/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[383339,383352] [2021-11-19 04:58:54,737 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:58:54,747 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:58:56,027 WARN L230 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_79258a43-3c71-417f-8ae6-fa74909caaac/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[380593,380606] [2021-11-19 04:58:56,034 WARN L230 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_79258a43-3c71-417f-8ae6-fa74909caaac/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[383339,383352] [2021-11-19 04:58:56,083 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:58:56,218 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:58:56,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56 WrapperNode [2021-11-19 04:58:56,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:58:56,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:58:56,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:58:56,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:58:56,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:56,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:56,816 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2021-11-19 04:58:56,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:58:56,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:58:56,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:58:56,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:58:56,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:56,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:56,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:56,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:57,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:57,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:57,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:57,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:58:57,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:58:57,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:58:57,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:58:57,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (1/1) ... [2021-11-19 04:58:57,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:58:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:58:57,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:58:57,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79258a43-3c71-417f-8ae6-fa74909caaac/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:58:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:58:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-19 04:58:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-19 04:58:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-19 04:58:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-19 04:58:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-19 04:58:57,456 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-19 04:58:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-19 04:58:57,456 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-19 04:58:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-19 04:58:57,456 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-19 04:58:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-19 04:58:57,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-19 04:58:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:58:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:58:57,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:58:57,689 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:58:57,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:59:06,438 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:59:06,485 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:59:06,485 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-19 04:59:06,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:06 BoogieIcfgContainer [2021-11-19 04:59:06,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:59:06,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:59:06,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:59:06,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:59:06,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:58:51" (1/3) ... [2021-11-19 04:59:06,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1a096e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:59:06, skipping insertion in model container [2021-11-19 04:59:06,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:56" (2/3) ... [2021-11-19 04:59:06,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1a096e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:59:06, skipping insertion in model container [2021-11-19 04:59:06,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:06" (3/3) ... [2021-11-19 04:59:06,506 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.09.cil-1.c [2021-11-19 04:59:06,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:59:06,513 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 04:59:06,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:59:06,605 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:59:06,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 04:59:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 04:59:06,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:06,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:06,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:06,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:06,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:06,694 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2021-11-19 04:59:06,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:06,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710064460] [2021-11-19 04:59:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:06,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:07,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:07,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710064460] [2021-11-19 04:59:07,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710064460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:07,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:07,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:59:07,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711038182] [2021-11-19 04:59:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:07,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:59:07,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:59:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:59:07,323 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:59:09,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:09,083 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2021-11-19 04:59:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:59:09,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-19 04:59:09,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:09,138 INFO L225 Difference]: With dead ends: 5081 [2021-11-19 04:59:09,138 INFO L226 Difference]: Without dead ends: 2532 [2021-11-19 04:59:09,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:59:09,158 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12404 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16949 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:09,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 16949 Invalid, 601 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [54 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 04:59:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-11-19 04:59:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2021-11-19 04:59:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 04:59:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2021-11-19 04:59:09,469 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2021-11-19 04:59:09,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:09,470 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2021-11-19 04:59:09,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:59:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2021-11-19 04:59:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:09,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:09,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:09,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:59:09,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:09,481 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2021-11-19 04:59:09,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:09,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193518470] [2021-11-19 04:59:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:09,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:09,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:09,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:09,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:09,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193518470] [2021-11-19 04:59:09,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193518470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:09,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:09,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:59:09,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800233516] [2021-11-19 04:59:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:09,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:59:09,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:09,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:59:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:59:09,878 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-11-19 04:59:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:13,035 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2021-11-19 04:59:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:59:13,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:13,059 INFO L225 Difference]: With dead ends: 3223 [2021-11-19 04:59:13,059 INFO L226 Difference]: Without dead ends: 2938 [2021-11-19 04:59:13,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:59:13,065 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:13,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17198 Invalid, 1628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 04:59:13,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-11-19 04:59:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2021-11-19 04:59:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-19 04:59:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2021-11-19 04:59:13,226 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2021-11-19 04:59:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:13,229 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2021-11-19 04:59:13,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-11-19 04:59:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2021-11-19 04:59:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:13,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:13,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:13,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:59:13,241 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:13,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2021-11-19 04:59:13,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:13,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697260566] [2021-11-19 04:59:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:13,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:13,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:13,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697260566] [2021-11-19 04:59:13,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697260566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:13,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:13,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:13,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035671277] [2021-11-19 04:59:13,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:13,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:13,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:13,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:13,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:13,526 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:15,340 INFO L93 Difference]: Finished difference Result 3537 states and 6220 transitions. [2021-11-19 04:59:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:59:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:15,361 INFO L225 Difference]: With dead ends: 3537 [2021-11-19 04:59:15,362 INFO L226 Difference]: Without dead ends: 2954 [2021-11-19 04:59:15,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:59:15,366 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 4962 mSDsluCounter, 12460 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4979 SdHoareTripleChecker+Valid, 16925 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:15,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4979 Valid, 16925 Invalid, 1146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 04:59:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-11-19 04:59:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2721. [2021-11-19 04:59:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8063789868667917) internal successors, (4814), 2668 states have internal predecessors, (4814), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-19 04:59:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4899 transitions. [2021-11-19 04:59:15,492 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4899 transitions. Word has length 145 [2021-11-19 04:59:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:15,492 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4899 transitions. [2021-11-19 04:59:15,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4899 transitions. [2021-11-19 04:59:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:15,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:15,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:15,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:59:15,496 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2021-11-19 04:59:15,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:15,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975000774] [2021-11-19 04:59:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:15,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:15,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:15,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975000774] [2021-11-19 04:59:15,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975000774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:15,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:15,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:15,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071003800] [2021-11-19 04:59:15,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:15,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:15,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:15,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:15,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:15,673 INFO L87 Difference]: Start difference. First operand 2721 states and 4899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:19,246 INFO L93 Difference]: Finished difference Result 3938 states and 6853 transitions. [2021-11-19 04:59:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:59:19,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:19,282 INFO L225 Difference]: With dead ends: 3938 [2021-11-19 04:59:19,282 INFO L226 Difference]: Without dead ends: 3355 [2021-11-19 04:59:19,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:59:19,288 INFO L933 BasicCegarLoop]: 4739 mSDtfsCounter, 5180 mSDsluCounter, 17378 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22117 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:19,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22117 Invalid, 2448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 04:59:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2021-11-19 04:59:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 2999. [2021-11-19 04:59:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2918 states have (on average 1.7840986977381768) internal successors, (5206), 2922 states have internal predecessors, (5206), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-11-19 04:59:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 5329 transitions. [2021-11-19 04:59:19,440 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 5329 transitions. Word has length 145 [2021-11-19 04:59:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:19,440 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 5329 transitions. [2021-11-19 04:59:19,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 5329 transitions. [2021-11-19 04:59:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:19,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:19,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:19,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:59:19,445 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:19,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2021-11-19 04:59:19,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:19,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929573857] [2021-11-19 04:59:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:19,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:19,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:19,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929573857] [2021-11-19 04:59:19,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929573857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:19,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:19,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:19,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752955822] [2021-11-19 04:59:19,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:19,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:19,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:19,627 INFO L87 Difference]: Start difference. First operand 2999 states and 5329 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:22,855 INFO L93 Difference]: Finished difference Result 4992 states and 8519 transitions. [2021-11-19 04:59:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:59:22,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:22,890 INFO L225 Difference]: With dead ends: 4992 [2021-11-19 04:59:22,890 INFO L226 Difference]: Without dead ends: 4131 [2021-11-19 04:59:22,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:59:22,898 INFO L933 BasicCegarLoop]: 4732 mSDtfsCounter, 5176 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5192 SdHoareTripleChecker+Valid, 22106 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:22,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5192 Valid, 22106 Invalid, 2433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 04:59:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2021-11-19 04:59:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 3558. [2021-11-19 04:59:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.7493434490808286) internal successors, (5995), 3433 states have internal predecessors, (5995), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-19 04:59:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6198 transitions. [2021-11-19 04:59:23,102 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6198 transitions. Word has length 145 [2021-11-19 04:59:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:23,103 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6198 transitions. [2021-11-19 04:59:23,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6198 transitions. [2021-11-19 04:59:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:23,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:23,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:23,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:59:23,107 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2021-11-19 04:59:23,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:23,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394808432] [2021-11-19 04:59:23,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:23,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:23,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:23,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:23,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:23,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:23,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394808432] [2021-11-19 04:59:23,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394808432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:23,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:23,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:23,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028818053] [2021-11-19 04:59:23,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:23,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:23,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:23,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:23,310 INFO L87 Difference]: Start difference. First operand 3558 states and 6198 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:25,126 INFO L93 Difference]: Finished difference Result 5541 states and 9379 transitions. [2021-11-19 04:59:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:59:25,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:25,155 INFO L225 Difference]: With dead ends: 5541 [2021-11-19 04:59:25,155 INFO L226 Difference]: Without dead ends: 4121 [2021-11-19 04:59:25,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:59:25,165 INFO L933 BasicCegarLoop]: 4452 mSDtfsCounter, 4829 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 21024 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:25,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4846 Valid, 21024 Invalid, 1228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 04:59:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-11-19 04:59:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3558. [2021-11-19 04:59:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.7478844470382258) internal successors, (5990), 3433 states have internal predecessors, (5990), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-19 04:59:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6193 transitions. [2021-11-19 04:59:25,383 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6193 transitions. Word has length 145 [2021-11-19 04:59:25,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:25,384 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6193 transitions. [2021-11-19 04:59:25,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6193 transitions. [2021-11-19 04:59:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:25,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:25,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:25,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:59:25,390 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2021-11-19 04:59:25,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:25,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473625743] [2021-11-19 04:59:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:25,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:25,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:25,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:25,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473625743] [2021-11-19 04:59:25,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473625743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:25,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:25,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:25,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139171366] [2021-11-19 04:59:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:25,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:25,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:25,575 INFO L87 Difference]: Start difference. First operand 3558 states and 6193 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:27,096 INFO L93 Difference]: Finished difference Result 5535 states and 9352 transitions. [2021-11-19 04:59:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:59:27,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:27,143 INFO L225 Difference]: With dead ends: 5535 [2021-11-19 04:59:27,143 INFO L226 Difference]: Without dead ends: 4115 [2021-11-19 04:59:27,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:59:27,149 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 5011 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 16878 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:27,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5028 Valid, 16878 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 04:59:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-11-19 04:59:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3558. [2021-11-19 04:59:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.746425444995623) internal successors, (5985), 3433 states have internal predecessors, (5985), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-19 04:59:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6188 transitions. [2021-11-19 04:59:27,332 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6188 transitions. Word has length 145 [2021-11-19 04:59:27,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:27,332 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6188 transitions. [2021-11-19 04:59:27,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:27,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6188 transitions. [2021-11-19 04:59:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:27,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:27,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:27,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:59:27,336 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:27,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:27,337 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2021-11-19 04:59:27,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:27,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782482846] [2021-11-19 04:59:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:27,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:27,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:27,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:27,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782482846] [2021-11-19 04:59:27,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782482846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:27,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:27,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:27,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612037058] [2021-11-19 04:59:27,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:27,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:27,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:27,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:27,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:27,521 INFO L87 Difference]: Start difference. First operand 3558 states and 6188 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:29,133 INFO L93 Difference]: Finished difference Result 5529 states and 9325 transitions. [2021-11-19 04:59:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:59:29,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:29,149 INFO L225 Difference]: With dead ends: 5529 [2021-11-19 04:59:29,150 INFO L226 Difference]: Without dead ends: 4109 [2021-11-19 04:59:29,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:59:29,157 INFO L933 BasicCegarLoop]: 4444 mSDtfsCounter, 4825 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 21016 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:29,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 21016 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 04:59:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-11-19 04:59:29,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 3558. [2021-11-19 04:59:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.74496644295302) internal successors, (5980), 3433 states have internal predecessors, (5980), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-19 04:59:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6183 transitions. [2021-11-19 04:59:29,337 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6183 transitions. Word has length 145 [2021-11-19 04:59:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:29,337 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6183 transitions. [2021-11-19 04:59:29,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6183 transitions. [2021-11-19 04:59:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:29,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:29,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:29,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 04:59:29,342 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2021-11-19 04:59:29,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:29,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184452731] [2021-11-19 04:59:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:29,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:29,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:29,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:29,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184452731] [2021-11-19 04:59:29,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184452731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:29,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:29,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:29,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834422826] [2021-11-19 04:59:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:29,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:29,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:29,496 INFO L87 Difference]: Start difference. First operand 3558 states and 6183 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:32,439 INFO L93 Difference]: Finished difference Result 7013 states and 11620 transitions. [2021-11-19 04:59:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:59:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:32,462 INFO L225 Difference]: With dead ends: 7013 [2021-11-19 04:59:32,463 INFO L226 Difference]: Without dead ends: 5593 [2021-11-19 04:59:32,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:59:32,472 INFO L933 BasicCegarLoop]: 4709 mSDtfsCounter, 5154 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 22083 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:32,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 22083 Invalid, 2368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 04:59:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2021-11-19 04:59:32,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 4694. [2021-11-19 04:59:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4463 states have (on average 1.69572036746583) internal successors, (7568), 4473 states have internal predecessors, (7568), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-11-19 04:59:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 7937 transitions. [2021-11-19 04:59:32,832 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 7937 transitions. Word has length 145 [2021-11-19 04:59:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:32,833 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 7937 transitions. [2021-11-19 04:59:32,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 7937 transitions. [2021-11-19 04:59:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:32,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:32,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:32,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 04:59:32,839 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:32,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2021-11-19 04:59:32,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:32,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378850293] [2021-11-19 04:59:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:32,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:33,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:33,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378850293] [2021-11-19 04:59:33,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378850293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:33,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:33,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:33,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277531142] [2021-11-19 04:59:33,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:33,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:33,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:33,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:33,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:33,021 INFO L87 Difference]: Start difference. First operand 4694 states and 7937 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:36,454 INFO L93 Difference]: Finished difference Result 11095 states and 17992 transitions. [2021-11-19 04:59:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:59:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:36,483 INFO L225 Difference]: With dead ends: 11095 [2021-11-19 04:59:36,483 INFO L226 Difference]: Without dead ends: 8539 [2021-11-19 04:59:36,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:59:36,495 INFO L933 BasicCegarLoop]: 4702 mSDtfsCounter, 5156 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 22076 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:36,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 22076 Invalid, 2360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 04:59:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2021-11-19 04:59:36,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 6967. [2021-11-19 04:59:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6967 states, 6536 states have (on average 1.6435128518971849) internal successors, (10742), 6554 states have internal predecessors, (10742), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-11-19 04:59:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 11461 transitions. [2021-11-19 04:59:36,971 INFO L78 Accepts]: Start accepts. Automaton has 6967 states and 11461 transitions. Word has length 145 [2021-11-19 04:59:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:36,971 INFO L470 AbstractCegarLoop]: Abstraction has 6967 states and 11461 transitions. [2021-11-19 04:59:36,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:36,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6967 states and 11461 transitions. [2021-11-19 04:59:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:36,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:36,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:36,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 04:59:36,979 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:36,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2021-11-19 04:59:36,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:36,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692887079] [2021-11-19 04:59:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:36,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:37,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:37,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:37,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692887079] [2021-11-19 04:59:37,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692887079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:37,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:37,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:37,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473303630] [2021-11-19 04:59:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:37,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:37,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:37,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:37,153 INFO L87 Difference]: Start difference. First operand 6967 states and 11461 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:41,455 INFO L93 Difference]: Finished difference Result 21204 states and 33776 transitions. [2021-11-19 04:59:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:59:41,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:41,522 INFO L225 Difference]: With dead ends: 21204 [2021-11-19 04:59:41,522 INFO L226 Difference]: Without dead ends: 16375 [2021-11-19 04:59:41,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:59:41,550 INFO L933 BasicCegarLoop]: 4830 mSDtfsCounter, 5233 mSDsluCounter, 17363 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 22193 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:41,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5248 Valid, 22193 Invalid, 2750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 04:59:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16375 states. [2021-11-19 04:59:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16375 to 11417. [2021-11-19 04:59:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11417 states, 10602 states have (on average 1.6021505376344085) internal successors, (16986), 10636 states have internal predecessors, (16986), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2021-11-19 04:59:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11417 states to 11417 states and 18427 transitions. [2021-11-19 04:59:42,546 INFO L78 Accepts]: Start accepts. Automaton has 11417 states and 18427 transitions. Word has length 145 [2021-11-19 04:59:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:42,546 INFO L470 AbstractCegarLoop]: Abstraction has 11417 states and 18427 transitions. [2021-11-19 04:59:42,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 11417 states and 18427 transitions. [2021-11-19 04:59:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:42,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:42,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:42,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 04:59:42,557 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:42,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2021-11-19 04:59:42,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:42,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409096731] [2021-11-19 04:59:42,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:42,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:42,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:42,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:42,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409096731] [2021-11-19 04:59:42,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409096731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:42,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:42,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:42,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480653287] [2021-11-19 04:59:42,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:42,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:42,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:42,705 INFO L87 Difference]: Start difference. First operand 11417 states and 18427 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:47,893 INFO L93 Difference]: Finished difference Result 38692 states and 61336 transitions. [2021-11-19 04:59:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:59:47,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:48,007 INFO L225 Difference]: With dead ends: 38692 [2021-11-19 04:59:48,007 INFO L226 Difference]: Without dead ends: 29413 [2021-11-19 04:59:48,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:59:48,058 INFO L933 BasicCegarLoop]: 4686 mSDtfsCounter, 5441 mSDsluCounter, 17366 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5467 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:48,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5467 Valid, 22052 Invalid, 2332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 04:59:48,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29413 states. [2021-11-19 04:59:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29413 to 20378. [2021-11-19 04:59:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20378 states, 18811 states have (on average 1.5741853171016957) internal successors, (29612), 18877 states have internal predecessors, (29612), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-11-19 04:59:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20378 states to 20378 states and 32627 transitions. [2021-11-19 04:59:49,728 INFO L78 Accepts]: Start accepts. Automaton has 20378 states and 32627 transitions. Word has length 145 [2021-11-19 04:59:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:59:49,728 INFO L470 AbstractCegarLoop]: Abstraction has 20378 states and 32627 transitions. [2021-11-19 04:59:49,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 20378 states and 32627 transitions. [2021-11-19 04:59:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 04:59:49,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:59:49,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:59:49,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 04:59:49,746 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:59:49,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:59:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash -560662113, now seen corresponding path program 1 times [2021-11-19 04:59:49,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:59:49,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605679875] [2021-11-19 04:59:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:59:49,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:59:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:59:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:59:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:59:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:59:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:59:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:59:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:59:49,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:59:49,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605679875] [2021-11-19 04:59:49,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605679875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:59:49,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:59:49,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:59:49,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123007506] [2021-11-19 04:59:49,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:59:49,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:59:49,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:59:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:59:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:59:49,894 INFO L87 Difference]: Start difference. First operand 20378 states and 32627 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 04:59:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:59:57,276 INFO L93 Difference]: Finished difference Result 73283 states and 116510 transitions. [2021-11-19 04:59:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:59:57,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 04:59:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:59:57,502 INFO L225 Difference]: With dead ends: 73283 [2021-11-19 04:59:57,502 INFO L226 Difference]: Without dead ends: 55043 [2021-11-19 04:59:57,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:59:57,570 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5401 mSDsluCounter, 17366 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:59:57,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5427 Valid, 22047 Invalid, 2324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 04:59:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55043 states. [2021-11-19 05:00:00,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55043 to 38267. [2021-11-19 05:00:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38267 states, 35228 states have (on average 1.5582491200181674) internal successors, (54894), 35358 states have internal predecessors, (54894), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2021-11-19 05:00:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38267 states to 38267 states and 61479 transitions. [2021-11-19 05:00:00,977 INFO L78 Accepts]: Start accepts. Automaton has 38267 states and 61479 transitions. Word has length 145 [2021-11-19 05:00:00,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:00:00,977 INFO L470 AbstractCegarLoop]: Abstraction has 38267 states and 61479 transitions. [2021-11-19 05:00:00,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 05:00:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 38267 states and 61479 transitions. [2021-11-19 05:00:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 05:00:01,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:00:01,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:00:01,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 05:00:01,007 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:00:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:00:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash -89305763, now seen corresponding path program 1 times [2021-11-19 05:00:01,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:00:01,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796928320] [2021-11-19 05:00:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:00:01,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:00:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:00:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 05:00:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 05:00:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 05:00:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 05:00:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:00:01,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:00:01,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796928320] [2021-11-19 05:00:01,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796928320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:00:01,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:00:01,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:00:01,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296314790] [2021-11-19 05:00:01,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:00:01,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:00:01,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:00:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:00:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:00:01,186 INFO L87 Difference]: Start difference. First operand 38267 states and 61479 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 05:00:13,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:00:13,789 INFO L93 Difference]: Finished difference Result 141282 states and 226916 transitions. [2021-11-19 05:00:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:00:13,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-11-19 05:00:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:00:14,593 INFO L225 Difference]: With dead ends: 141282 [2021-11-19 05:00:14,593 INFO L226 Difference]: Without dead ends: 105153 [2021-11-19 05:00:14,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:00:14,681 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 5260 mSDsluCounter, 16852 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5275 SdHoareTripleChecker+Valid, 21443 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:00:14,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5275 Valid, 21443 Invalid, 2433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 05:00:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105153 states. [2021-11-19 05:00:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105153 to 73980. [2021-11-19 05:00:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73980 states, 68061 states have (on average 1.550373929269332) internal successors, (105520), 68319 states have internal predecessors, (105520), 4119 states have call successors, (4119), 1542 states have call predecessors, (4119), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2021-11-19 05:00:21,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73980 states to 73980 states and 120575 transitions. [2021-11-19 05:00:21,445 INFO L78 Accepts]: Start accepts. Automaton has 73980 states and 120575 transitions. Word has length 145 [2021-11-19 05:00:21,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:00:21,446 INFO L470 AbstractCegarLoop]: Abstraction has 73980 states and 120575 transitions. [2021-11-19 05:00:21,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-19 05:00:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 73980 states and 120575 transitions. [2021-11-19 05:00:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 05:00:21,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:00:21,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:00:21,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:00:21,500 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:00:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:00:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1736668705, now seen corresponding path program 1 times [2021-11-19 05:00:21,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:00:21,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605799378] [2021-11-19 05:00:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:00:21,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:00:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 05:00:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:21,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 05:00:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 05:00:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 05:00:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 05:00:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:00:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:00:21,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:00:21,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605799378] [2021-11-19 05:00:21,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605799378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:00:21,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:00:21,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:00:21,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362495206] [2021-11-19 05:00:21,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:00:21,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:00:21,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:00:21,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:00:21,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:00:21,630 INFO L87 Difference]: Start difference. First operand 73980 states and 120575 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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)