./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa --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 48263e5b2fdfa125a212d9dd2b1aa7b4bc28734093ef4904b2507084a0cf2933 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:34:12,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:34:12,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:34:12,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:34:12,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:34:12,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:34:12,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:34:12,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:34:12,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:34:12,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:34:12,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:34:12,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:34:12,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:34:12,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:34:12,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:34:12,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:34:12,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:34:12,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:34:12,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:34:12,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:34:12,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:34:12,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:34:12,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:34:12,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:34:12,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:34:12,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:34:12,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:34:12,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:34:12,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:34:12,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:34:12,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:34:12,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:34:12,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:34:12,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:34:12,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:34:12,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:34:12,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:34:12,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:34:12,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:34:12,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:34:12,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:34:12,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:34:12,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:34:12,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:34:12,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:34:12,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:34:12,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:34:12,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:34:12,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:34:12,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:34:12,842 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:34:12,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:34:12,842 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:34:12,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:34:12,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:34:12,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:34:12,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:34:12,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:34:12,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:34:12,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:34:12,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:34:12,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:34:12,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:34:12,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:34:12,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:34:12,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:34:12,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:34:12,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:34:12,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:34:12,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:34:12,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:34:12,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:34:12,845 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:34:12,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:34:12,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:34:12,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:34:12,845 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_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48263e5b2fdfa125a212d9dd2b1aa7b4bc28734093ef4904b2507084a0cf2933 [2021-12-06 17:34:13,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:34:13,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:34:13,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:34:13,033 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:34:13,034 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:34:13,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c [2021-12-06 17:34:13,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/data/ff5b75d06/c6dc0c16b6a14aab8659d302c726477a/FLAGaa84baf62 [2021-12-06 17:34:13,750 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:34:13,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c [2021-12-06 17:34:13,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/data/ff5b75d06/c6dc0c16b6a14aab8659d302c726477a/FLAGaa84baf62 [2021-12-06 17:34:14,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/data/ff5b75d06/c6dc0c16b6a14aab8659d302c726477a [2021-12-06 17:34:14,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:34:14,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:34:14,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:34:14,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:34:14,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:34:14,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:34:14" (1/1) ... [2021-12-06 17:34:14,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6248384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:14, skipping insertion in model container [2021-12-06 17:34:14,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:34:14" (1/1) ... [2021-12-06 17:34:14,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:34:14,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:34:15,660 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_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c[378560,378573] [2021-12-06 17:34:15,685 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_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c[383339,383352] [2021-12-06 17:34:15,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:34:15,958 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:34:16,762 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_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c[378560,378573] [2021-12-06 17:34:16,767 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_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c[383339,383352] [2021-12-06 17:34:16,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:34:16,835 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:34:16,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16 WrapperNode [2021-12-06 17:34:16,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:34:16,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:34:16,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:34:16,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:34:16,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:16,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,183 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-06 17:34:17,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:34:17,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:34:17,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:34:17,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:34:17,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:34:17,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:34:17,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:34:17,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:34:17,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (1/1) ... [2021-12-06 17:34:17,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:34:17,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:17,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:34:17,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf03d13-98e0-41fd-ad46-31ab1d85f6a8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:34:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:34:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 17:34:17,575 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 17:34:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 17:34:17,576 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 17:34:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 17:34:17,576 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 17:34:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 17:34:17,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 17:34:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 17:34:17,576 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 17:34:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 17:34:17,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 17:34:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:34:17,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:34:17,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:34:17,669 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:34:17,670 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:34:21,996 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:34:22,022 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:34:22,022 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-06 17:34:22,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:34:22 BoogieIcfgContainer [2021-12-06 17:34:22,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:34:22,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:34:22,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:34:22,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:34:22,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:34:14" (1/3) ... [2021-12-06 17:34:22,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2a5504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:34:22, skipping insertion in model container [2021-12-06 17:34:22,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:16" (2/3) ... [2021-12-06 17:34:22,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2a5504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:34:22, skipping insertion in model container [2021-12-06 17:34:22,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:34:22" (3/3) ... [2021-12-06 17:34:22,032 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.12.cil-2.c [2021-12-06 17:34:22,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:34:22,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:34:22,082 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:34:22,087 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 [2021-12-06 17:34:22,088 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:34:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 17:34:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:22,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:22,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:22,175 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:22,180 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-06 17:34:22,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:22,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728267959] [2021-12-06 17:34:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:22,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:22,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:22,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:22,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:22,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728267959] [2021-12-06 17:34:22,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728267959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:22,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:22,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:34:22,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169711372] [2021-12-06 17:34:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:22,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:34:22,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:22,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:34:22,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:34:22,648 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-06 17:34:24,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:24,120 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2021-12-06 17:34:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:34:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:24,151 INFO L225 Difference]: With dead ends: 5266 [2021-12-06 17:34:24,151 INFO L226 Difference]: Without dead ends: 2640 [2021-12-06 17:34:24,182 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 [2021-12-06 17:34:24,185 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17168 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:24,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 17168 Invalid, 763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:34:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-06 17:34:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-06 17:34:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 17:34:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2021-12-06 17:34:24,312 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2021-12-06 17:34:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:24,313 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2021-12-06 17:34:24,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-06 17:34:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2021-12-06 17:34:24,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:24,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:24,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:24,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:34:24,319 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:24,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:24,319 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2021-12-06 17:34:24,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:24,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192158776] [2021-12-06 17:34:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:24,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:24,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:24,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192158776] [2021-12-06 17:34:24,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192158776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:24,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:24,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:34:24,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41588640] [2021-12-06 17:34:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:24,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:34:24,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:24,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:34:24,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:34:24,508 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-06 17:34:25,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:25,695 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2021-12-06 17:34:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:34:25,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:25,708 INFO L225 Difference]: With dead ends: 3002 [2021-12-06 17:34:25,709 INFO L226 Difference]: Without dead ends: 2640 [2021-12-06 17:34:25,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:25,712 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16895 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:25,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 16895 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:34:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-06 17:34:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-06 17:34:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 17:34:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2021-12-06 17:34:25,782 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2021-12-06 17:34:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:25,782 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2021-12-06 17:34:25,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-06 17:34:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2021-12-06 17:34:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:25,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:25,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:25,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:34:25,787 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:25,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2021-12-06 17:34:25,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:25,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289117896] [2021-12-06 17:34:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:25,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:25,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:25,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:25,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:25,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289117896] [2021-12-06 17:34:25,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289117896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:25,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:25,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:34:25,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800592679] [2021-12-06 17:34:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:25,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:34:25,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:34:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:34:25,982 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-06 17:34:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:28,213 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2021-12-06 17:34:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:34:28,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:28,227 INFO L225 Difference]: With dead ends: 3514 [2021-12-06 17:34:28,227 INFO L226 Difference]: Without dead ends: 3157 [2021-12-06 17:34:28,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:34:28,231 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12878 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17543 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:28,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 17543 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 17:34:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-12-06 17:34:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2021-12-06 17:34:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-06 17:34:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2021-12-06 17:34:28,336 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2021-12-06 17:34:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:28,337 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2021-12-06 17:34:28,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-06 17:34:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2021-12-06 17:34:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:28,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:28,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:28,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:34:28,340 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2021-12-06 17:34:28,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:28,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980773632] [2021-12-06 17:34:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:28,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:28,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:28,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:28,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980773632] [2021-12-06 17:34:28,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980773632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:28,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:28,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:28,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527474298] [2021-12-06 17:34:28,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:28,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:28,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:28,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:28,505 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:29,957 INFO L93 Difference]: Finished difference Result 3912 states and 6843 transitions. [2021-12-06 17:34:29,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:34:29,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:29,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:29,970 INFO L225 Difference]: With dead ends: 3912 [2021-12-06 17:34:29,970 INFO L226 Difference]: Without dead ends: 3179 [2021-12-06 17:34:29,972 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 [2021-12-06 17:34:29,973 INFO L933 BasicCegarLoop]: 4608 mSDtfsCounter, 5073 mSDsluCounter, 16762 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21370 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:29,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 21370 Invalid, 1597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 17:34:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-12-06 17:34:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2874. [2021-12-06 17:34:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7969416785206258) internal successors, (5053), 2815 states have internal predecessors, (5053), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-06 17:34:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5150 transitions. [2021-12-06 17:34:30,051 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5150 transitions. Word has length 178 [2021-12-06 17:34:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:30,052 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5150 transitions. [2021-12-06 17:34:30,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5150 transitions. [2021-12-06 17:34:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:30,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:30,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:30,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:34:30,054 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:30,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:30,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2021-12-06 17:34:30,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:30,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672556943] [2021-12-06 17:34:30,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:30,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:30,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:30,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:30,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672556943] [2021-12-06 17:34:30,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672556943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:30,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:30,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:30,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929066052] [2021-12-06 17:34:30,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:30,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:30,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:30,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:30,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:30,179 INFO L87 Difference]: Start difference. First operand 2874 states and 5150 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:32,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:32,561 INFO L93 Difference]: Finished difference Result 4423 states and 7658 transitions. [2021-12-06 17:34:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:34:32,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:32,577 INFO L225 Difference]: With dead ends: 4423 [2021-12-06 17:34:32,577 INFO L226 Difference]: Without dead ends: 3690 [2021-12-06 17:34:32,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:34:32,580 INFO L933 BasicCegarLoop]: 4728 mSDtfsCounter, 5634 mSDsluCounter, 17170 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21898 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:32,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5653 Valid, 21898 Invalid, 2836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 17:34:32,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-12-06 17:34:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3223. [2021-12-06 17:34:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7727417810405361) internal successors, (5554), 3137 states have internal predecessors, (5554), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-06 17:34:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5695 transitions. [2021-12-06 17:34:32,673 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5695 transitions. Word has length 178 [2021-12-06 17:34:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:32,673 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 5695 transitions. [2021-12-06 17:34:32,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:32,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5695 transitions. [2021-12-06 17:34:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:32,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:32,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:32,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:34:32,676 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:32,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2021-12-06 17:34:32,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:32,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910293092] [2021-12-06 17:34:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:32,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:32,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:32,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:32,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:32,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910293092] [2021-12-06 17:34:32,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910293092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:32,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:32,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:32,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087336438] [2021-12-06 17:34:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:32,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:32,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:32,812 INFO L87 Difference]: Start difference. First operand 3223 states and 5695 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:35,410 INFO L93 Difference]: Finished difference Result 5766 states and 9803 transitions. [2021-12-06 17:34:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:34:35,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:35,431 INFO L225 Difference]: With dead ends: 5766 [2021-12-06 17:34:35,431 INFO L226 Difference]: Without dead ends: 4684 [2021-12-06 17:34:35,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:34:35,436 INFO L933 BasicCegarLoop]: 4950 mSDtfsCounter, 5535 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5554 SdHoareTripleChecker+Valid, 22714 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:35,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5554 Valid, 22714 Invalid, 3124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 17:34:35,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2021-12-06 17:34:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 3923. [2021-12-06 17:34:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.736563410113847) internal successors, (6559), 3783 states have internal predecessors, (6559), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-06 17:34:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6792 transitions. [2021-12-06 17:34:35,570 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6792 transitions. Word has length 178 [2021-12-06 17:34:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:35,571 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6792 transitions. [2021-12-06 17:34:35,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6792 transitions. [2021-12-06 17:34:35,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:35,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:35,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:35,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:34:35,574 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:35,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2021-12-06 17:34:35,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:35,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969853972] [2021-12-06 17:34:35,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:35,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:35,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:35,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:35,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969853972] [2021-12-06 17:34:35,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969853972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:35,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:35,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:35,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471193501] [2021-12-06 17:34:35,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:35,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:35,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:35,693 INFO L87 Difference]: Start difference. First operand 3923 states and 6792 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:36,936 INFO L93 Difference]: Finished difference Result 6452 states and 10885 transitions. [2021-12-06 17:34:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:34:36,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:36,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:36,956 INFO L225 Difference]: With dead ends: 6452 [2021-12-06 17:34:36,956 INFO L226 Difference]: Without dead ends: 4670 [2021-12-06 17:34:36,960 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 [2021-12-06 17:34:36,961 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5240 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5260 SdHoareTripleChecker+Valid, 17203 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:36,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5260 Valid, 17203 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:34:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-12-06 17:34:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 3923. [2021-12-06 17:34:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.73523960815462) internal successors, (6554), 3783 states have internal predecessors, (6554), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-06 17:34:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6787 transitions. [2021-12-06 17:34:37,097 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6787 transitions. Word has length 178 [2021-12-06 17:34:37,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:37,097 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6787 transitions. [2021-12-06 17:34:37,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6787 transitions. [2021-12-06 17:34:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:37,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:37,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:37,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:34:37,100 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2021-12-06 17:34:37,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:37,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132165643] [2021-12-06 17:34:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:37,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:37,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:37,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:37,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:37,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132165643] [2021-12-06 17:34:37,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132165643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:37,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:37,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:37,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646995938] [2021-12-06 17:34:37,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:37,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:37,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:37,220 INFO L87 Difference]: Start difference. First operand 3923 states and 6787 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:38,703 INFO L93 Difference]: Finished difference Result 6446 states and 10858 transitions. [2021-12-06 17:34:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:34:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:38,717 INFO L225 Difference]: With dead ends: 6446 [2021-12-06 17:34:38,717 INFO L226 Difference]: Without dead ends: 4664 [2021-12-06 17:34:38,721 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 [2021-12-06 17:34:38,722 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5072 mSDsluCounter, 16761 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 21350 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:38,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5092 Valid, 21350 Invalid, 1557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:34:38,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-12-06 17:34:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3923. [2021-12-06 17:34:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7339158061953932) internal successors, (6549), 3783 states have internal predecessors, (6549), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-06 17:34:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6782 transitions. [2021-12-06 17:34:38,857 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6782 transitions. Word has length 178 [2021-12-06 17:34:38,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:38,857 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6782 transitions. [2021-12-06 17:34:38,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:38,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6782 transitions. [2021-12-06 17:34:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:38,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:38,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:38,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:34:38,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:38,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2021-12-06 17:34:38,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:38,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298842742] [2021-12-06 17:34:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:38,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:38,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:38,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298842742] [2021-12-06 17:34:38,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298842742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:38,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:38,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:38,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917136692] [2021-12-06 17:34:38,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:38,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:38,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:38,974 INFO L87 Difference]: Start difference. First operand 3923 states and 6782 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:40,220 INFO L93 Difference]: Finished difference Result 6440 states and 10831 transitions. [2021-12-06 17:34:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:34:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:40,229 INFO L225 Difference]: With dead ends: 6440 [2021-12-06 17:34:40,229 INFO L226 Difference]: Without dead ends: 4658 [2021-12-06 17:34:40,233 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 [2021-12-06 17:34:40,234 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 5236 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5256 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:40,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5256 Valid, 17195 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:34:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-12-06 17:34:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3923. [2021-12-06 17:34:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7325920042361662) internal successors, (6544), 3783 states have internal predecessors, (6544), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-06 17:34:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6777 transitions. [2021-12-06 17:34:40,370 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6777 transitions. Word has length 178 [2021-12-06 17:34:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:40,370 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6777 transitions. [2021-12-06 17:34:40,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6777 transitions. [2021-12-06 17:34:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:40,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:40,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:40,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:34:40,373 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:40,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:40,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2021-12-06 17:34:40,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:40,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103819433] [2021-12-06 17:34:40,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:40,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:40,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:40,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:40,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:40,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103819433] [2021-12-06 17:34:40,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103819433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:40,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:40,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:40,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448279820] [2021-12-06 17:34:40,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:40,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:40,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:40,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:40,528 INFO L87 Difference]: Start difference. First operand 3923 states and 6777 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:43,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:43,357 INFO L93 Difference]: Finished difference Result 8330 states and 13794 transitions. [2021-12-06 17:34:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:34:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:43,370 INFO L225 Difference]: With dead ends: 8330 [2021-12-06 17:34:43,370 INFO L226 Difference]: Without dead ends: 6548 [2021-12-06 17:34:43,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:34:43,374 INFO L933 BasicCegarLoop]: 4922 mSDtfsCounter, 5504 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 22686 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:43,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 22686 Invalid, 3049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 17:34:43,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2021-12-06 17:34:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 5345. [2021-12-06 17:34:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 5087 states have (on average 1.6850796147041478) internal successors, (8572), 5097 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-06 17:34:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 8995 transitions. [2021-12-06 17:34:43,594 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 8995 transitions. Word has length 178 [2021-12-06 17:34:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:43,594 INFO L470 AbstractCegarLoop]: Abstraction has 5345 states and 8995 transitions. [2021-12-06 17:34:43,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 8995 transitions. [2021-12-06 17:34:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:43,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:43,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:43,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 17:34:43,597 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:43,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2021-12-06 17:34:43,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:43,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818012282] [2021-12-06 17:34:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:43,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:43,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:43,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:43,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:43,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818012282] [2021-12-06 17:34:43,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818012282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:43,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:43,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:43,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855928113] [2021-12-06 17:34:43,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:43,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:43,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:43,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:43,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:43,718 INFO L87 Difference]: Start difference. First operand 5345 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:46,743 INFO L93 Difference]: Finished difference Result 13508 states and 21962 transitions. [2021-12-06 17:34:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:34:46,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:46,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:46,763 INFO L225 Difference]: With dead ends: 13508 [2021-12-06 17:34:46,763 INFO L226 Difference]: Without dead ends: 10304 [2021-12-06 17:34:46,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:34:46,772 INFO L933 BasicCegarLoop]: 4917 mSDtfsCounter, 5503 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 22681 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:46,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5522 Valid, 22681 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 17:34:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10304 states. [2021-12-06 17:34:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10304 to 8188. [2021-12-06 17:34:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 7706 states have (on average 1.6379444588632235) internal successors, (12622), 7724 states have internal predecessors, (12622), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-06 17:34:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13443 transitions. [2021-12-06 17:34:47,203 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13443 transitions. Word has length 178 [2021-12-06 17:34:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:47,203 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 13443 transitions. [2021-12-06 17:34:47,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13443 transitions. [2021-12-06 17:34:47,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:47,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:47,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:47,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:34:47,208 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:47,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2021-12-06 17:34:47,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:47,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005490907] [2021-12-06 17:34:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:47,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:47,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:47,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005490907] [2021-12-06 17:34:47,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005490907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:47,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:47,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:47,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174341157] [2021-12-06 17:34:47,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:47,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:47,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:47,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:47,317 INFO L87 Difference]: Start difference. First operand 8188 states and 13443 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:50,879 INFO L93 Difference]: Finished difference Result 23857 states and 38344 transitions. [2021-12-06 17:34:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:34:50,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:50,912 INFO L225 Difference]: With dead ends: 23857 [2021-12-06 17:34:50,912 INFO L226 Difference]: Without dead ends: 17810 [2021-12-06 17:34:50,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:34:50,927 INFO L933 BasicCegarLoop]: 4679 mSDtfsCounter, 5599 mSDsluCounter, 17123 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5618 SdHoareTripleChecker+Valid, 21802 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:50,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5618 Valid, 21802 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 17:34:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17810 states. [2021-12-06 17:34:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17810 to 13889. [2021-12-06 17:34:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 12959 states have (on average 1.6007407979010726) internal successors, (20744), 12993 states have internal predecessors, (20744), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-06 17:34:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 22415 transitions. [2021-12-06 17:34:51,730 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 22415 transitions. Word has length 178 [2021-12-06 17:34:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:51,730 INFO L470 AbstractCegarLoop]: Abstraction has 13889 states and 22415 transitions. [2021-12-06 17:34:51,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 22415 transitions. [2021-12-06 17:34:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:51,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:51,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:51,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:34:51,736 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash -778448125, now seen corresponding path program 1 times [2021-12-06 17:34:51,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:51,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793771314] [2021-12-06 17:34:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:51,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:51,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:51,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793771314] [2021-12-06 17:34:51,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793771314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:51,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:51,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:51,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076274018] [2021-12-06 17:34:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:51,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:51,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:51,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:51,849 INFO L87 Difference]: Start difference. First operand 13889 states and 22415 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:56,641 INFO L93 Difference]: Finished difference Result 44556 states and 71302 transitions. [2021-12-06 17:34:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:34:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:34:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:56,705 INFO L225 Difference]: With dead ends: 44556 [2021-12-06 17:34:56,705 INFO L226 Difference]: Without dead ends: 32808 [2021-12-06 17:34:56,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:34:56,733 INFO L933 BasicCegarLoop]: 4905 mSDtfsCounter, 5504 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 22669 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:56,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 22669 Invalid, 3025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2937 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 17:34:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32808 states. [2021-12-06 17:34:58,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32808 to 25322. [2021-12-06 17:34:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25322 states, 23496 states have (on average 1.5761831801157644) internal successors, (37034), 23562 states have internal predecessors, (37034), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-06 17:34:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25322 states to 25322 states and 40567 transitions. [2021-12-06 17:34:58,380 INFO L78 Accepts]: Start accepts. Automaton has 25322 states and 40567 transitions. Word has length 178 [2021-12-06 17:34:58,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:58,380 INFO L470 AbstractCegarLoop]: Abstraction has 25322 states and 40567 transitions. [2021-12-06 17:34:58,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:34:58,380 INFO L276 IsEmpty]: Start isEmpty. Operand 25322 states and 40567 transitions. [2021-12-06 17:34:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:34:58,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:58,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:58,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:34:58,389 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:58,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:58,389 INFO L85 PathProgramCache]: Analyzing trace with hash -440160575, now seen corresponding path program 1 times [2021-12-06 17:34:58,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:58,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739255210] [2021-12-06 17:34:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:58,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:34:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:34:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:34:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:34:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:34:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:58,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:58,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739255210] [2021-12-06 17:34:58,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739255210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:58,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:34:58,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:34:58,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425515295] [2021-12-06 17:34:58,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:58,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:58,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:58,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:34:58,499 INFO L87 Difference]: Start difference. First operand 25322 states and 40567 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:35:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:07,820 INFO L93 Difference]: Finished difference Result 97217 states and 155098 transitions. [2021-12-06 17:35:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:35:07,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:35:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:07,988 INFO L225 Difference]: With dead ends: 97217 [2021-12-06 17:35:07,988 INFO L226 Difference]: Without dead ends: 74036 [2021-12-06 17:35:08,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:35:08,047 INFO L933 BasicCegarLoop]: 4894 mSDtfsCounter, 5985 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6017 SdHoareTripleChecker+Valid, 22650 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:08,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6017 Valid, 22650 Invalid, 3005 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 17:35:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74036 states. [2021-12-06 17:35:11,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74036 to 48124. [2021-12-06 17:35:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48124 states, 44570 states have (on average 1.5640565402737268) internal successors, (69710), 44700 states have internal predecessors, (69710), 2650 states have call successors, (2650), 774 states have call predecessors, (2650), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2021-12-06 17:35:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48124 states to 48124 states and 77325 transitions. [2021-12-06 17:35:11,665 INFO L78 Accepts]: Start accepts. Automaton has 48124 states and 77325 transitions. Word has length 178 [2021-12-06 17:35:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:11,665 INFO L470 AbstractCegarLoop]: Abstraction has 48124 states and 77325 transitions. [2021-12-06 17:35:11,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:35:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 48124 states and 77325 transitions. [2021-12-06 17:35:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:35:11,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:11,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:11,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:35:11,680 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:11,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:11,680 INFO L85 PathProgramCache]: Analyzing trace with hash -980590081, now seen corresponding path program 1 times [2021-12-06 17:35:11,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:11,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143153715] [2021-12-06 17:35:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:11,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:35:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:35:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:35:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:35:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:35:11,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:11,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143153715] [2021-12-06 17:35:11,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143153715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:11,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:35:11,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:35:11,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976059426] [2021-12-06 17:35:11,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:11,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:35:11,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:35:11,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:35:11,795 INFO L87 Difference]: Start difference. First operand 48124 states and 77325 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:35:28,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:28,805 INFO L93 Difference]: Finished difference Result 189233 states and 304194 transitions. [2021-12-06 17:35:28,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:35:28,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:35:28,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:29,198 INFO L225 Difference]: With dead ends: 189233 [2021-12-06 17:35:29,198 INFO L226 Difference]: Without dead ends: 143250 [2021-12-06 17:35:29,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:35:29,313 INFO L933 BasicCegarLoop]: 5076 mSDtfsCounter, 5610 mSDsluCounter, 17753 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5628 SdHoareTripleChecker+Valid, 22829 SdHoareTripleChecker+Invalid, 3542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:29,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5628 Valid, 22829 Invalid, 3542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 17:35:29,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143250 states. [2021-12-06 17:35:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143250 to 93021. [2021-12-06 17:35:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93021 states, 86075 states have (on average 1.557897182689515) internal successors, (134096), 86333 states have internal predecessors, (134096), 5146 states have call successors, (5146), 1542 states have call predecessors, (5146), 1798 states have return successors, (11963), 5401 states have call predecessors, (11963), 5146 states have call successors, (11963) [2021-12-06 17:35:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93021 states to 93021 states and 151205 transitions. [2021-12-06 17:35:36,882 INFO L78 Accepts]: Start accepts. Automaton has 93021 states and 151205 transitions. Word has length 178 [2021-12-06 17:35:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:36,882 INFO L470 AbstractCegarLoop]: Abstraction has 93021 states and 151205 transitions. [2021-12-06 17:35:36,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:35:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 93021 states and 151205 transitions. [2021-12-06 17:35:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:35:36,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:36,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:36,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 17:35:36,909 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:36,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1136570623, now seen corresponding path program 1 times [2021-12-06 17:35:36,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:36,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602538693] [2021-12-06 17:35:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:36,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:35:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:35:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:35:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:35:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:35:37,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:37,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602538693] [2021-12-06 17:35:37,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602538693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:37,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:35:37,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:35:37,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103155816] [2021-12-06 17:35:37,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:37,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:35:37,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:35:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:35:37,010 INFO L87 Difference]: Start difference. First operand 93021 states and 151205 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:36:08,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:36:08,683 INFO L93 Difference]: Finished difference Result 368976 states and 601240 transitions. [2021-12-06 17:36:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:36:08,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:36:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:36:09,581 INFO L225 Difference]: With dead ends: 368976 [2021-12-06 17:36:09,582 INFO L226 Difference]: Without dead ends: 278096 [2021-12-06 17:36:09,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:36:09,798 INFO L933 BasicCegarLoop]: 4884 mSDtfsCounter, 5905 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5937 SdHoareTripleChecker+Valid, 22640 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:36:09,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5937 Valid, 22640 Invalid, 2989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 17:36:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278096 states. [2021-12-06 17:36:24,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278096 to 183326. [2021-12-06 17:36:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183326 states, 169724 states have (on average 1.5555725766538615) internal successors, (264018), 170238 states have internal predecessors, (264018), 10010 states have call successors, (10010), 3078 states have call predecessors, (10010), 3590 states have return successors, (30205), 10521 states have call predecessors, (30205), 10010 states have call successors, (30205) [2021-12-06 17:36:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183326 states to 183326 states and 304233 transitions. [2021-12-06 17:36:25,328 INFO L78 Accepts]: Start accepts. Automaton has 183326 states and 304233 transitions. Word has length 178 [2021-12-06 17:36:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:36:25,328 INFO L470 AbstractCegarLoop]: Abstraction has 183326 states and 304233 transitions. [2021-12-06 17:36:25,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:36:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 183326 states and 304233 transitions. [2021-12-06 17:36:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:36:25,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:36:25,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:36:25,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:36:25,378 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:36:25,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:36:25,378 INFO L85 PathProgramCache]: Analyzing trace with hash -725960257, now seen corresponding path program 1 times [2021-12-06 17:36:25,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:36:25,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128167083] [2021-12-06 17:36:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:36:25,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:36:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:36:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:36:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:36:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:36:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:36:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:36:25,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:36:25,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128167083] [2021-12-06 17:36:25,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128167083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:36:25,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:36:25,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:36:25,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836248679] [2021-12-06 17:36:25,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:36:25,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:36:25,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:36:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:36:25,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:36:25,476 INFO L87 Difference]: Start difference. First operand 183326 states and 304233 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:37:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:37:28,297 INFO L93 Difference]: Finished difference Result 725391 states and 1208094 transitions. [2021-12-06 17:37:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:37:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:37:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:37:30,279 INFO L225 Difference]: With dead ends: 725391 [2021-12-06 17:37:30,279 INFO L226 Difference]: Without dead ends: 544206 [2021-12-06 17:37:30,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:37:30,881 INFO L933 BasicCegarLoop]: 4879 mSDtfsCounter, 5865 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5897 SdHoareTripleChecker+Valid, 22635 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:37:30,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5897 Valid, 22635 Invalid, 2981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 17:37:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544206 states. [2021-12-06 17:38:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544206 to 363679. [2021-12-06 17:38:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363679 states, 337021 states have (on average 1.5551434480343955) internal successors, (524116), 338047 states have internal predecessors, (524116), 19482 states have call successors, (19482), 6150 states have call predecessors, (19482), 7174 states have return successors, (79555), 20505 states have call predecessors, (79555), 19482 states have call successors, (79555) [2021-12-06 17:38:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363679 states to 363679 states and 623153 transitions. [2021-12-06 17:38:04,070 INFO L78 Accepts]: Start accepts. Automaton has 363679 states and 623153 transitions. Word has length 178 [2021-12-06 17:38:04,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:38:04,070 INFO L470 AbstractCegarLoop]: Abstraction has 363679 states and 623153 transitions. [2021-12-06 17:38:04,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:38:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 363679 states and 623153 transitions. [2021-12-06 17:38:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:38:04,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:38:04,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:38:04,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 17:38:04,168 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:38:04,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:38:04,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1781137217, now seen corresponding path program 1 times [2021-12-06 17:38:04,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:38:04,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448472751] [2021-12-06 17:38:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:38:04,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:38:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:38:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:38:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:38:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:38:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:38:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:38:04,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:38:04,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448472751] [2021-12-06 17:38:04,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448472751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:38:04,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:38:04,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:38:04,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137221097] [2021-12-06 17:38:04,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:38:04,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:38:04,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:38:04,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:38:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:38:04,267 INFO L87 Difference]: Start difference. First operand 363679 states and 623153 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:40:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:40:12,883 INFO L93 Difference]: Finished difference Result 1428750 states and 2459188 transitions. [2021-12-06 17:40:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:40:12,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:40:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:40:17,375 INFO L225 Difference]: With dead ends: 1428750 [2021-12-06 17:40:17,375 INFO L226 Difference]: Without dead ends: 1067212 [2021-12-06 17:40:19,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:40:19,405 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 5578 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5596 SdHoareTripleChecker+Valid, 22770 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:40:19,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5596 Valid, 22770 Invalid, 3414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:40:19,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067212 states. [2021-12-06 17:41:24,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067212 to 723872. [2021-12-06 17:41:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723872 states, 671614 states have (on average 1.5556882375888532) internal successors, (1044822), 673664 states have internal predecessors, (1044822), 37914 states have call successors, (37914), 12294 states have call predecessors, (37914), 14342 states have return successors, (217109), 39961 states have call predecessors, (217109), 37914 states have call successors, (217109) [2021-12-06 17:41:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723872 states to 723872 states and 1299845 transitions. [2021-12-06 17:41:29,585 INFO L78 Accepts]: Start accepts. Automaton has 723872 states and 1299845 transitions. Word has length 178 [2021-12-06 17:41:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:41:29,585 INFO L470 AbstractCegarLoop]: Abstraction has 723872 states and 1299845 transitions. [2021-12-06 17:41:29,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:41:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 723872 states and 1299845 transitions. [2021-12-06 17:41:29,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:41:29,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:41:29,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:41:29,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 17:41:29,835 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:41:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:41:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash -354745985, now seen corresponding path program 1 times [2021-12-06 17:41:29,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:41:29,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247602171] [2021-12-06 17:41:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:41:29,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:41:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:41:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:41:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:41:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:41:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:29,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:41:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:41:29,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:41:29,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247602171] [2021-12-06 17:41:29,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247602171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:41:29,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:41:29,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:41:29,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842345726] [2021-12-06 17:41:29,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:41:29,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:41:29,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:41:29,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:41:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:41:29,955 INFO L87 Difference]: Start difference. First operand 723872 states and 1299845 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:43:17,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:17,139 INFO L93 Difference]: Finished difference Result 1667048 states and 3124542 transitions. [2021-12-06 17:43:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:43:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-06 17:43:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:21,801 INFO L225 Difference]: With dead ends: 1667048 [2021-12-06 17:43:21,801 INFO L226 Difference]: Without dead ends: 945317 [2021-12-06 17:43:24,612 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 [2021-12-06 17:43:24,612 INFO L933 BasicCegarLoop]: 4534 mSDtfsCounter, 5106 mSDsluCounter, 16758 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5126 SdHoareTripleChecker+Valid, 21292 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:24,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5126 Valid, 21292 Invalid, 1436 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 17:43:25,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945317 states. [2021-12-06 17:44:34,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945317 to 723872. [2021-12-06 17:44:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723872 states, 671614 states have (on average 1.5526373780177305) internal successors, (1042773), 673664 states have internal predecessors, (1042773), 37914 states have call successors, (37914), 12294 states have call predecessors, (37914), 14342 states have return successors, (217109), 39961 states have call predecessors, (217109), 37914 states have call successors, (217109) [2021-12-06 17:44:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723872 states to 723872 states and 1297796 transitions. [2021-12-06 17:44:39,504 INFO L78 Accepts]: Start accepts. Automaton has 723872 states and 1297796 transitions. Word has length 178 [2021-12-06 17:44:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:39,505 INFO L470 AbstractCegarLoop]: Abstraction has 723872 states and 1297796 transitions. [2021-12-06 17:44:39,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-06 17:44:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 723872 states and 1297796 transitions. [2021-12-06 17:44:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:44:39,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:39,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:39,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:44:39,714 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash -285098111, now seen corresponding path program 1 times [2021-12-06 17:44:39,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:39,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188735666] [2021-12-06 17:44:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:39,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:39,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:44:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:44:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:44:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:44:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:39,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:44:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:39,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:39,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188735666] [2021-12-06 17:44:39,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188735666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:44:39,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:44:39,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:44:39,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001735993] [2021-12-06 17:44:39,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:44:39,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:44:39,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:44:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:44:39,841 INFO L87 Difference]: Start difference. First operand 723872 states and 1297796 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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)