./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.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_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/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_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/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_ac0015dd-5a25-45e5-893b-49cb2c2c27da/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 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:35:54,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:35:54,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:35:54,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:35:54,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:35:54,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:35:54,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:35:54,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:35:54,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:35:54,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:35:54,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:35:54,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:35:54,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:35:54,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:35:54,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:35:54,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:35:54,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:35:54,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:35:54,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:35:54,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:35:54,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:35:54,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:35:54,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:35:54,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:35:54,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:35:54,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:35:54,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:35:54,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:35:54,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:35:54,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:35:54,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:35:54,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:35:54,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:35:54,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:35:54,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:35:54,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:35:54,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:35:54,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:35:54,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:35:54,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:35:54,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:35:54,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:35:54,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:35:54,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:35:54,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:35:54,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:35:54,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:35:54,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:35:54,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:35:54,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:35:54,846 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:35:54,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:35:54,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:35:54,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:35:54,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:35:54,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:35:54,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:35:54,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:35:54,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:35:54,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:35:54,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:35:54,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:35:54,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:35:54,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:35:54,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:35:54,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:35:54,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:35:54,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:35:54,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:35:54,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:35:54,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:35:54,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:35:54,850 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:35:54,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:35:54,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:35:54,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:35:54,851 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_ac0015dd-5a25-45e5-893b-49cb2c2c27da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 [2021-12-07 00:35:55,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:35:55,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:35:55,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:35:55,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:35:55,058 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:35:55,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2021-12-07 00:35:55,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/data/d0f9d330f/7bc5d15dd5ab42d1837c2824efc0809c/FLAG2b37365cf [2021-12-07 00:35:55,763 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:35:55,763 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2021-12-07 00:35:55,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/data/d0f9d330f/7bc5d15dd5ab42d1837c2824efc0809c/FLAG2b37365cf [2021-12-07 00:35:56,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/data/d0f9d330f/7bc5d15dd5ab42d1837c2824efc0809c [2021-12-07 00:35:56,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:35:56,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:35:56,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:35:56,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:35:56,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:35:56,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:56" (1/1) ... [2021-12-07 00:35:56,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bf58c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:56, skipping insertion in model container [2021-12-07 00:35:56,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:56" (1/1) ... [2021-12-07 00:35:56,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:35:56,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:35:57,776 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_ac0015dd-5a25-45e5-893b-49cb2c2c27da/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[378560,378573] [2021-12-07 00:35:57,800 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_ac0015dd-5a25-45e5-893b-49cb2c2c27da/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[383339,383352] [2021-12-07 00:35:58,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:35:58,006 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:35:58,799 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_ac0015dd-5a25-45e5-893b-49cb2c2c27da/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[378560,378573] [2021-12-07 00:35:58,804 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_ac0015dd-5a25-45e5-893b-49cb2c2c27da/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[383339,383352] [2021-12-07 00:35:58,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:35:58,873 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:35:58,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58 WrapperNode [2021-12-07 00:35:58,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:35:58,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:35:58,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:35:58,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:35:58,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:58,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,218 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2021-12-07 00:35:59,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:35:59,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:35:59,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:35:59,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:35:59,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:35:59,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:35:59,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:35:59,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:35:59,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (1/1) ... [2021-12-07 00:35:59,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:35:59,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:59,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:35:59,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:35:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:35:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-07 00:35:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-07 00:35:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-07 00:35:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-07 00:35:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-07 00:35:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-07 00:35:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-07 00:35:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-07 00:35:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-07 00:35:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-07 00:35:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-07 00:35:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-07 00:35:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-07 00:35:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-07 00:35:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:35:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:35:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:35:59,694 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:35:59,695 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:36:03,870 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:36:03,889 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:36:03,889 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-07 00:36:03,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:36:03 BoogieIcfgContainer [2021-12-07 00:36:03,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:36:03,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:36:03,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:36:03,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:36:03,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:35:56" (1/3) ... [2021-12-07 00:36:03,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b984d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:36:03, skipping insertion in model container [2021-12-07 00:36:03,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:58" (2/3) ... [2021-12-07 00:36:03,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b984d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:36:03, skipping insertion in model container [2021-12-07 00:36:03,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:36:03" (3/3) ... [2021-12-07 00:36:03,900 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-2.c [2021-12-07 00:36:03,904 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:36:03,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-07 00:36:03,945 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:36:03,950 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 [2021-12-07 00:36:03,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-07 00:36:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-07 00:36:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:04,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:04,038 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] [2021-12-07 00:36:04,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2021-12-07 00:36:04,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580028514] [2021-12-07 00:36:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:04,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:04,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:04,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580028514] [2021-12-07 00:36:04,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580028514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:04,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:04,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:36:04,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504399086] [2021-12-07 00:36:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:04,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:36:04,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:04,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:36:04,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:36:04,427 INFO L87 Difference]: Start difference. First operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:05,266 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2021-12-07 00:36:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:36:05,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:05,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:05,297 INFO L225 Difference]: With dead ends: 4970 [2021-12-07 00:36:05,297 INFO L226 Difference]: Without dead ends: 2467 [2021-12-07 00:36:05,305 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 [2021-12-07 00:36:05,308 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 667 mSDsluCounter, 12368 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 16833 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:05,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 16833 Invalid, 497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:36:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2021-12-07 00:36:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2021-12-07 00:36:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2349 states have (on average 1.8369518944231589) internal successors, (4315), 2352 states have internal predecessors, (4315), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-07 00:36:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2021-12-07 00:36:05,444 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2021-12-07 00:36:05,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:05,445 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2021-12-07 00:36:05,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2021-12-07 00:36:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:05,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:05,452 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] [2021-12-07 00:36:05,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:36:05,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:05,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:05,453 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2021-12-07 00:36:05,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:05,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728239629] [2021-12-07 00:36:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:05,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:05,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728239629] [2021-12-07 00:36:05,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728239629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:05,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:05,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:36:05,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684667857] [2021-12-07 00:36:05,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:05,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:36:05,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:36:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:36:05,680 INFO L87 Difference]: Start difference. First operand 2380 states and 4359 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:07,006 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2021-12-07 00:36:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:36:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:07,020 INFO L225 Difference]: With dead ends: 3050 [2021-12-07 00:36:07,020 INFO L226 Difference]: Without dead ends: 2806 [2021-12-07 00:36:07,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:36:07,022 INFO L933 BasicCegarLoop]: 4428 mSDtfsCounter, 4951 mSDsluCounter, 12588 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 17016 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:07,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 17016 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:36:07,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2021-12-07 00:36:07,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2021-12-07 00:36:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8145129996119518) internal successors, (4676), 2581 states have internal predecessors, (4676), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-07 00:36:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2021-12-07 00:36:07,094 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2021-12-07 00:36:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:07,094 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2021-12-07 00:36:07,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2021-12-07 00:36:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:07,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:07,097 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] [2021-12-07 00:36:07,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:36:07,097 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:07,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:07,098 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2021-12-07 00:36:07,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:07,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766647318] [2021-12-07 00:36:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:07,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:07,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:07,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766647318] [2021-12-07 00:36:07,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766647318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:07,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:07,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:07,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237513593] [2021-12-07 00:36:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:07,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:07,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:07,219 INFO L87 Difference]: Start difference. First operand 2631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:07,945 INFO L93 Difference]: Finished difference Result 3311 states and 5848 transitions. [2021-12-07 00:36:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:36:07,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:07,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:07,959 INFO L225 Difference]: With dead ends: 3311 [2021-12-07 00:36:07,959 INFO L226 Difference]: Without dead ends: 2816 [2021-12-07 00:36:07,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:36:07,963 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 4786 mSDsluCounter, 12385 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4801 SdHoareTripleChecker+Valid, 16768 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:07,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4801 Valid, 16768 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:36:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-12-07 00:36:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2631. [2021-12-07 00:36:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8137369033760187) internal successors, (4674), 2581 states have internal predecessors, (4674), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-07 00:36:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4753 transitions. [2021-12-07 00:36:08,039 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4753 transitions. Word has length 124 [2021-12-07 00:36:08,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:08,039 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 4753 transitions. [2021-12-07 00:36:08,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4753 transitions. [2021-12-07 00:36:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:08,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:08,041 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] [2021-12-07 00:36:08,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:36:08,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:08,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:08,042 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2021-12-07 00:36:08,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:08,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883788386] [2021-12-07 00:36:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:08,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:08,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:08,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:08,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883788386] [2021-12-07 00:36:08,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883788386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:08,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:08,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:08,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254045356] [2021-12-07 00:36:08,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:08,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:08,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:08,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:08,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:08,155 INFO L87 Difference]: Start difference. First operand 2631 states and 4753 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:09,572 INFO L93 Difference]: Finished difference Result 3644 states and 6365 transitions. [2021-12-07 00:36:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:36:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:09,588 INFO L225 Difference]: With dead ends: 3644 [2021-12-07 00:36:09,588 INFO L226 Difference]: Without dead ends: 3149 [2021-12-07 00:36:09,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:36:09,592 INFO L933 BasicCegarLoop]: 4625 mSDtfsCounter, 4949 mSDsluCounter, 17199 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4963 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:09,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4963 Valid, 21824 Invalid, 2015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:36:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2021-12-07 00:36:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 2865. [2021-12-07 00:36:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2788 states have (on average 1.793400286944046) internal successors, (5000), 2793 states have internal predecessors, (5000), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-07 00:36:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5113 transitions. [2021-12-07 00:36:09,681 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5113 transitions. Word has length 124 [2021-12-07 00:36:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:09,682 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 5113 transitions. [2021-12-07 00:36:09,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5113 transitions. [2021-12-07 00:36:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:09,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:09,683 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] [2021-12-07 00:36:09,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:36:09,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:09,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2021-12-07 00:36:09,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:09,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901557513] [2021-12-07 00:36:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:09,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:09,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:09,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:09,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901557513] [2021-12-07 00:36:09,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901557513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:09,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:09,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:09,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412289730] [2021-12-07 00:36:09,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:09,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:09,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:09,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:09,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:09,790 INFO L87 Difference]: Start difference. First operand 2865 states and 5113 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:11,199 INFO L93 Difference]: Finished difference Result 4522 states and 7745 transitions. [2021-12-07 00:36:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:36:11,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:11,217 INFO L225 Difference]: With dead ends: 4522 [2021-12-07 00:36:11,217 INFO L226 Difference]: Without dead ends: 3793 [2021-12-07 00:36:11,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:36:11,221 INFO L933 BasicCegarLoop]: 4617 mSDtfsCounter, 4946 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21812 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:11,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4960 Valid, 21812 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:36:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2021-12-07 00:36:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3335. [2021-12-07 00:36:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3335 states, 3212 states have (on average 1.760585305105853) internal successors, (5655), 3219 states have internal predecessors, (5655), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-07 00:36:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 5840 transitions. [2021-12-07 00:36:11,315 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 5840 transitions. Word has length 124 [2021-12-07 00:36:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:11,315 INFO L470 AbstractCegarLoop]: Abstraction has 3335 states and 5840 transitions. [2021-12-07 00:36:11,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 5840 transitions. [2021-12-07 00:36:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:11,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:11,317 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] [2021-12-07 00:36:11,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:36:11,318 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2021-12-07 00:36:11,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:11,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840275418] [2021-12-07 00:36:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:11,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:11,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:11,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840275418] [2021-12-07 00:36:11,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840275418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:11,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:11,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:11,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871749417] [2021-12-07 00:36:11,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:11,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:11,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:11,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:11,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:11,415 INFO L87 Difference]: Start difference. First operand 3335 states and 5840 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:12,787 INFO L93 Difference]: Finished difference Result 6218 states and 10400 transitions. [2021-12-07 00:36:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:36:12,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:12,808 INFO L225 Difference]: With dead ends: 6218 [2021-12-07 00:36:12,808 INFO L226 Difference]: Without dead ends: 5019 [2021-12-07 00:36:12,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:36:12,813 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 4942 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4956 SdHoareTripleChecker+Valid, 21808 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:12,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4956 Valid, 21808 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:36:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5019 states. [2021-12-07 00:36:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5019 to 4277. [2021-12-07 00:36:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 4062 states have (on average 1.7151649433776466) internal successors, (6967), 4073 states have internal predecessors, (6967), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-07 00:36:12,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 7302 transitions. [2021-12-07 00:36:12,942 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 7302 transitions. Word has length 124 [2021-12-07 00:36:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:12,942 INFO L470 AbstractCegarLoop]: Abstraction has 4277 states and 7302 transitions. [2021-12-07 00:36:12,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 7302 transitions. [2021-12-07 00:36:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:12,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:12,945 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] [2021-12-07 00:36:12,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:36:12,945 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2021-12-07 00:36:12,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:12,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942956056] [2021-12-07 00:36:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:12,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:13,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:13,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942956056] [2021-12-07 00:36:13,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942956056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:13,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:13,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:13,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765627433] [2021-12-07 00:36:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:13,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:13,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:13,037 INFO L87 Difference]: Start difference. First operand 4277 states and 7302 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:13,844 INFO L93 Difference]: Finished difference Result 7170 states and 11909 transitions. [2021-12-07 00:36:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:36:13,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:13,865 INFO L225 Difference]: With dead ends: 7170 [2021-12-07 00:36:13,865 INFO L226 Difference]: Without dead ends: 5029 [2021-12-07 00:36:13,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:36:13,872 INFO L933 BasicCegarLoop]: 4366 mSDtfsCounter, 4681 mSDsluCounter, 16480 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4696 SdHoareTripleChecker+Valid, 20846 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:13,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4696 Valid, 20846 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:36:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2021-12-07 00:36:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 4277. [2021-12-07 00:36:13,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 4062 states have (on average 1.7129492860659774) internal successors, (6958), 4073 states have internal predecessors, (6958), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-07 00:36:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 7293 transitions. [2021-12-07 00:36:14,002 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 7293 transitions. Word has length 124 [2021-12-07 00:36:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:14,002 INFO L470 AbstractCegarLoop]: Abstraction has 4277 states and 7293 transitions. [2021-12-07 00:36:14,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 7293 transitions. [2021-12-07 00:36:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:14,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:14,005 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] [2021-12-07 00:36:14,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:36:14,005 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:14,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2021-12-07 00:36:14,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:14,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916267470] [2021-12-07 00:36:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:14,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:14,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:14,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:14,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916267470] [2021-12-07 00:36:14,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916267470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:14,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:14,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:14,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166967170] [2021-12-07 00:36:14,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:14,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:14,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:14,095 INFO L87 Difference]: Start difference. First operand 4277 states and 7293 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:14,890 INFO L93 Difference]: Finished difference Result 7150 states and 11843 transitions. [2021-12-07 00:36:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:36:14,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:14,906 INFO L225 Difference]: With dead ends: 7150 [2021-12-07 00:36:14,907 INFO L226 Difference]: Without dead ends: 5009 [2021-12-07 00:36:14,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:36:14,912 INFO L933 BasicCegarLoop]: 4360 mSDtfsCounter, 4678 mSDsluCounter, 16480 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 20840 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:14,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4693 Valid, 20840 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:36:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states. [2021-12-07 00:36:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5009 to 4277. [2021-12-07 00:36:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 4062 states have (on average 1.7107336287543082) internal successors, (6949), 4073 states have internal predecessors, (6949), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-07 00:36:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 7284 transitions. [2021-12-07 00:36:15,058 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 7284 transitions. Word has length 124 [2021-12-07 00:36:15,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:15,058 INFO L470 AbstractCegarLoop]: Abstraction has 4277 states and 7284 transitions. [2021-12-07 00:36:15,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:15,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 7284 transitions. [2021-12-07 00:36:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:15,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:15,060 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] [2021-12-07 00:36:15,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:36:15,060 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2021-12-07 00:36:15,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:15,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202550719] [2021-12-07 00:36:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:15,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:15,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:15,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:15,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:15,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202550719] [2021-12-07 00:36:15,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202550719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:15,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:15,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:15,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342023271] [2021-12-07 00:36:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:15,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:15,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:15,139 INFO L87 Difference]: Start difference. First operand 4277 states and 7284 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:16,842 INFO L93 Difference]: Finished difference Result 10436 states and 16882 transitions. [2021-12-07 00:36:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:36:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:16,856 INFO L225 Difference]: With dead ends: 10436 [2021-12-07 00:36:16,856 INFO L226 Difference]: Without dead ends: 8295 [2021-12-07 00:36:16,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:36:16,861 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5216 mSDsluCounter, 17187 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5238 SdHoareTripleChecker+Valid, 21776 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:16,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5238 Valid, 21776 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:36:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8295 states. [2021-12-07 00:36:17,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8295 to 6169. [2021-12-07 00:36:17,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6169 states, 5778 states have (on average 1.6590515749394255) internal successors, (9586), 5797 states have internal predecessors, (9586), 271 states have call successors, (271), 103 states have call predecessors, (271), 118 states have return successors, (366), 284 states have call predecessors, (366), 269 states have call successors, (366) [2021-12-07 00:36:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6169 states to 6169 states and 10223 transitions. [2021-12-07 00:36:17,081 INFO L78 Accepts]: Start accepts. Automaton has 6169 states and 10223 transitions. Word has length 124 [2021-12-07 00:36:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:17,082 INFO L470 AbstractCegarLoop]: Abstraction has 6169 states and 10223 transitions. [2021-12-07 00:36:17,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6169 states and 10223 transitions. [2021-12-07 00:36:17,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:17,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:17,085 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] [2021-12-07 00:36:17,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:36:17,085 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2021-12-07 00:36:17,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407327184] [2021-12-07 00:36:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:17,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:17,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:17,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407327184] [2021-12-07 00:36:17,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407327184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:17,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:17,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:17,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239983858] [2021-12-07 00:36:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:17,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:17,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:17,171 INFO L87 Difference]: Start difference. First operand 6169 states and 10223 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:19,227 INFO L93 Difference]: Finished difference Result 17814 states and 28405 transitions. [2021-12-07 00:36:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:36:19,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:19,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:19,259 INFO L225 Difference]: With dead ends: 17814 [2021-12-07 00:36:19,259 INFO L226 Difference]: Without dead ends: 13781 [2021-12-07 00:36:19,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:36:19,270 INFO L933 BasicCegarLoop]: 4691 mSDtfsCounter, 4986 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4999 SdHoareTripleChecker+Valid, 21875 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:19,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4999 Valid, 21875 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:36:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13781 states. [2021-12-07 00:36:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13781 to 9778. [2021-12-07 00:36:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9778 states, 9043 states have (on average 1.6107486453610527) internal successors, (14566), 9078 states have internal predecessors, (14566), 503 states have call successors, (503), 199 states have call predecessors, (503), 230 states have return successors, (776), 532 states have call predecessors, (776), 501 states have call successors, (776) [2021-12-07 00:36:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9778 states to 9778 states and 15845 transitions. [2021-12-07 00:36:19,706 INFO L78 Accepts]: Start accepts. Automaton has 9778 states and 15845 transitions. Word has length 124 [2021-12-07 00:36:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:19,706 INFO L470 AbstractCegarLoop]: Abstraction has 9778 states and 15845 transitions. [2021-12-07 00:36:19,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9778 states and 15845 transitions. [2021-12-07 00:36:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:19,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:19,711 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] [2021-12-07 00:36:19,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:36:19,711 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:19,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2021-12-07 00:36:19,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:19,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654157812] [2021-12-07 00:36:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:19,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:19,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:19,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:19,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:19,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:19,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:19,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654157812] [2021-12-07 00:36:19,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654157812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:19,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:19,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:19,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753897199] [2021-12-07 00:36:19,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:19,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:19,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:19,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:19,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:19,789 INFO L87 Difference]: Start difference. First operand 9778 states and 15845 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:22,377 INFO L93 Difference]: Finished difference Result 31789 states and 50305 transitions. [2021-12-07 00:36:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:36:22,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:22,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:22,427 INFO L225 Difference]: With dead ends: 31789 [2021-12-07 00:36:22,427 INFO L226 Difference]: Without dead ends: 24147 [2021-12-07 00:36:22,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:36:22,448 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 5136 mSDsluCounter, 17187 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5158 SdHoareTripleChecker+Valid, 21766 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:22,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5158 Valid, 21766 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:36:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24147 states. [2021-12-07 00:36:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24147 to 17139. [2021-12-07 00:36:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17139 states, 15732 states have (on average 1.578184591914569) internal successors, (24828), 15799 states have internal predecessors, (24828), 951 states have call successors, (951), 391 states have call predecessors, (951), 454 states have return successors, (1742), 1012 states have call predecessors, (1742), 949 states have call successors, (1742) [2021-12-07 00:36:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17139 states to 17139 states and 27521 transitions. [2021-12-07 00:36:23,372 INFO L78 Accepts]: Start accepts. Automaton has 17139 states and 27521 transitions. Word has length 124 [2021-12-07 00:36:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:23,373 INFO L470 AbstractCegarLoop]: Abstraction has 17139 states and 27521 transitions. [2021-12-07 00:36:23,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 17139 states and 27521 transitions. [2021-12-07 00:36:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:23,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:23,381 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] [2021-12-07 00:36:23,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:36:23,381 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2021-12-07 00:36:23,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:23,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270576663] [2021-12-07 00:36:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:23,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:23,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:23,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:23,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270576663] [2021-12-07 00:36:23,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270576663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:23,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:23,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:23,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657676126] [2021-12-07 00:36:23,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:23,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:23,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:23,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:23,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:23,466 INFO L87 Difference]: Start difference. First operand 17139 states and 27521 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:27,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:27,386 INFO L93 Difference]: Finished difference Result 59596 states and 94643 transitions. [2021-12-07 00:36:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:36:27,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:27,511 INFO L225 Difference]: With dead ends: 59596 [2021-12-07 00:36:27,511 INFO L226 Difference]: Without dead ends: 44593 [2021-12-07 00:36:27,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:36:27,547 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5096 mSDsluCounter, 17187 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5118 SdHoareTripleChecker+Valid, 21761 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:27,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5118 Valid, 21761 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:36:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44593 states. [2021-12-07 00:36:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44593 to 31828. [2021-12-07 00:36:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31828 states, 29109 states have (on average 1.5590367240372394) internal successors, (45382), 29240 states have internal predecessors, (45382), 1815 states have call successors, (1815), 775 states have call predecessors, (1815), 902 states have return successors, (4128), 1940 states have call predecessors, (4128), 1813 states have call successors, (4128) [2021-12-07 00:36:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31828 states to 31828 states and 51325 transitions. [2021-12-07 00:36:29,263 INFO L78 Accepts]: Start accepts. Automaton has 31828 states and 51325 transitions. Word has length 124 [2021-12-07 00:36:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:29,264 INFO L470 AbstractCegarLoop]: Abstraction has 31828 states and 51325 transitions. [2021-12-07 00:36:29,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 31828 states and 51325 transitions. [2021-12-07 00:36:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:29,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:29,275 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] [2021-12-07 00:36:29,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:36:29,275 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:29,275 INFO L85 PathProgramCache]: Analyzing trace with hash 817944409, now seen corresponding path program 1 times [2021-12-07 00:36:29,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:29,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668678611] [2021-12-07 00:36:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:29,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:29,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:29,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:29,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:29,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:29,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668678611] [2021-12-07 00:36:29,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668678611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:29,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:29,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:29,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689733254] [2021-12-07 00:36:29,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:29,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:29,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:29,350 INFO L87 Difference]: Start difference. First operand 31828 states and 51325 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:35,905 INFO L93 Difference]: Finished difference Result 114027 states and 183377 transitions. [2021-12-07 00:36:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:36:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:36,117 INFO L225 Difference]: With dead ends: 114027 [2021-12-07 00:36:36,117 INFO L226 Difference]: Without dead ends: 84335 [2021-12-07 00:36:36,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:36:36,185 INFO L933 BasicCegarLoop]: 4629 mSDtfsCounter, 4954 mSDsluCounter, 17187 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4967 SdHoareTripleChecker+Valid, 21816 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:36,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4967 Valid, 21816 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:36:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84335 states. [2021-12-07 00:36:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84335 to 61141. [2021-12-07 00:36:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61141 states, 55862 states have (on average 1.5493895671476137) internal successors, (86552), 56121 states have internal predecessors, (86552), 3479 states have call successors, (3479), 1543 states have call predecessors, (3479), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-12-07 00:36:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61141 states to 61141 states and 100325 transitions. [2021-12-07 00:36:39,708 INFO L78 Accepts]: Start accepts. Automaton has 61141 states and 100325 transitions. Word has length 124 [2021-12-07 00:36:39,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:39,709 INFO L470 AbstractCegarLoop]: Abstraction has 61141 states and 100325 transitions. [2021-12-07 00:36:39,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:39,709 INFO L276 IsEmpty]: Start isEmpty. Operand 61141 states and 100325 transitions. [2021-12-07 00:36:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:39,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:39,731 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] [2021-12-07 00:36:39,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:36:39,732 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:39,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash -801030505, now seen corresponding path program 1 times [2021-12-07 00:36:39,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:39,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451910636] [2021-12-07 00:36:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:39,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:39,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:39,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451910636] [2021-12-07 00:36:39,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451910636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:39,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:39,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:39,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261195902] [2021-12-07 00:36:39,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:39,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:39,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:39,798 INFO L87 Difference]: Start difference. First operand 61141 states and 100325 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:45,386 INFO L93 Difference]: Finished difference Result 136402 states and 228144 transitions. [2021-12-07 00:36:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:36:45,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:45,575 INFO L225 Difference]: With dead ends: 136402 [2021-12-07 00:36:45,575 INFO L226 Difference]: Without dead ends: 77397 [2021-12-07 00:36:45,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:36:45,660 INFO L933 BasicCegarLoop]: 4339 mSDtfsCounter, 4681 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4696 SdHoareTripleChecker+Valid, 20817 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:45,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4696 Valid, 20817 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:36:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77397 states. [2021-12-07 00:36:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77397 to 61141. [2021-12-07 00:36:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61141 states, 55862 states have (on average 1.5447889441838818) internal successors, (86295), 56121 states have internal predecessors, (86295), 3479 states have call successors, (3479), 1543 states have call predecessors, (3479), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-12-07 00:36:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61141 states to 61141 states and 100068 transitions. [2021-12-07 00:36:49,261 INFO L78 Accepts]: Start accepts. Automaton has 61141 states and 100068 transitions. Word has length 124 [2021-12-07 00:36:49,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:49,261 INFO L470 AbstractCegarLoop]: Abstraction has 61141 states and 100068 transitions. [2021-12-07 00:36:49,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 61141 states and 100068 transitions. [2021-12-07 00:36:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:49,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:49,284 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] [2021-12-07 00:36:49,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:36:49,285 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:49,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:49,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1684539495, now seen corresponding path program 1 times [2021-12-07 00:36:49,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:49,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368154655] [2021-12-07 00:36:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:49,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:49,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:49,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368154655] [2021-12-07 00:36:49,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368154655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:49,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:49,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:49,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425914281] [2021-12-07 00:36:49,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:49,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:49,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:49,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:49,355 INFO L87 Difference]: Start difference. First operand 61141 states and 100068 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:55,089 INFO L93 Difference]: Finished difference Result 135886 states and 226341 transitions. [2021-12-07 00:36:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:36:55,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:36:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:55,293 INFO L225 Difference]: With dead ends: 135886 [2021-12-07 00:36:55,293 INFO L226 Difference]: Without dead ends: 76881 [2021-12-07 00:36:55,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:36:55,392 INFO L933 BasicCegarLoop]: 4334 mSDtfsCounter, 4678 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 20812 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:55,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4693 Valid, 20812 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:36:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76881 states. [2021-12-07 00:36:58,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76881 to 61141. [2021-12-07 00:36:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61141 states, 55862 states have (on average 1.5401883212201497) internal successors, (86038), 56121 states have internal predecessors, (86038), 3479 states have call successors, (3479), 1543 states have call predecessors, (3479), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-12-07 00:36:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61141 states to 61141 states and 99811 transitions. [2021-12-07 00:36:59,131 INFO L78 Accepts]: Start accepts. Automaton has 61141 states and 99811 transitions. Word has length 124 [2021-12-07 00:36:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:59,131 INFO L470 AbstractCegarLoop]: Abstraction has 61141 states and 99811 transitions. [2021-12-07 00:36:59,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:36:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 61141 states and 99811 transitions. [2021-12-07 00:36:59,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-07 00:36:59,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:59,158 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] [2021-12-07 00:36:59,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:36:59,158 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:59,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash 669845787, now seen corresponding path program 1 times [2021-12-07 00:36:59,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:59,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293127662] [2021-12-07 00:36:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:59,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:36:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:36:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:36:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:36:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:36:59,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:59,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293127662] [2021-12-07 00:36:59,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293127662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:59,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:59,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:36:59,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272944912] [2021-12-07 00:36:59,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:59,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:36:59,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:59,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:36:59,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:36:59,233 INFO L87 Difference]: Start difference. First operand 61141 states and 99811 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:37:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:07,925 INFO L93 Difference]: Finished difference Result 172207 states and 277531 transitions. [2021-12-07 00:37:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:37:07,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-07 00:37:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:08,206 INFO L225 Difference]: With dead ends: 172207 [2021-12-07 00:37:08,207 INFO L226 Difference]: Without dead ends: 113203 [2021-12-07 00:37:08,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:37:08,312 INFO L933 BasicCegarLoop]: 4739 mSDtfsCounter, 5205 mSDsluCounter, 12722 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5240 SdHoareTripleChecker+Valid, 17461 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:08,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5240 Valid, 17461 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:37:08,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113203 states. [2021-12-07 00:37:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113203 to 90162. [2021-12-07 00:37:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90162 states, 82172 states have (on average 1.526894806016648) internal successors, (125468), 82688 states have internal predecessors, (125468), 5288 states have call successors, (5288), 2317 states have call predecessors, (5288), 2700 states have return successors, (14291), 5412 states have call predecessors, (14291), 5286 states have call successors, (14291) [2021-12-07 00:37:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90162 states to 90162 states and 145047 transitions. [2021-12-07 00:37:13,670 INFO L78 Accepts]: Start accepts. Automaton has 90162 states and 145047 transitions. Word has length 124 [2021-12-07 00:37:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:13,671 INFO L470 AbstractCegarLoop]: Abstraction has 90162 states and 145047 transitions. [2021-12-07 00:37:13,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 00:37:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 90162 states and 145047 transitions. [2021-12-07 00:37:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-07 00:37:13,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:13,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:13,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:37:13,786 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1919885162, now seen corresponding path program 1 times [2021-12-07 00:37:13,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:13,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022699398] [2021-12-07 00:37:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:13,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:37:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:37:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:37:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:37:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:37:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:37:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:37:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-07 00:37:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:37:13,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:13,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022699398] [2021-12-07 00:37:13,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022699398] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:13,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076689144] [2021-12-07 00:37:13,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:13,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:13,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:13,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:13,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:37:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:14,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:37:14,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:37:14,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:37:14,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076689144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:14,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:37:14,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:37:14,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394112890] [2021-12-07 00:37:14,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:14,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:37:14,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:14,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:37:14,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:37:14,174 INFO L87 Difference]: Start difference. First operand 90162 states and 145047 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:37:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:23,595 INFO L93 Difference]: Finished difference Result 264857 states and 427755 transitions. [2021-12-07 00:37:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:37:23,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 201 [2021-12-07 00:37:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:24,112 INFO L225 Difference]: With dead ends: 264857 [2021-12-07 00:37:24,113 INFO L226 Difference]: Without dead ends: 176832 [2021-12-07 00:37:24,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:37:24,296 INFO L933 BasicCegarLoop]: 4366 mSDtfsCounter, 4264 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:24,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4264 Valid, 4727 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:37:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176832 states. [2021-12-07 00:37:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176832 to 176056. [2021-12-07 00:37:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176056 states, 160278 states have (on average 1.5215251001385093) internal successors, (243867), 161307 states have internal predecessors, (243867), 10376 states have call successors, (10376), 4633 states have call predecessors, (10376), 5400 states have return successors, (28129), 10371 states have call predecessors, (28129), 10374 states have call successors, (28129) [2021-12-07 00:37:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176056 states to 176056 states and 282372 transitions. [2021-12-07 00:37:34,820 INFO L78 Accepts]: Start accepts. Automaton has 176056 states and 282372 transitions. Word has length 201 [2021-12-07 00:37:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:34,821 INFO L470 AbstractCegarLoop]: Abstraction has 176056 states and 282372 transitions. [2021-12-07 00:37:34,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:37:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 176056 states and 282372 transitions. [2021-12-07 00:37:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-07 00:37:35,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:35,185 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:35,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:37:35,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 00:37:35,387 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1324174774, now seen corresponding path program 1 times [2021-12-07 00:37:35,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:35,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476981463] [2021-12-07 00:37:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:35,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:37:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:37:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:37:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:37:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:37:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:37:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:37:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-07 00:37:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:37:35,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:35,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476981463] [2021-12-07 00:37:35,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476981463] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:35,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328599866] [2021-12-07 00:37:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:35,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:35,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:35,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:35,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:37:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:35,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:37:35,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:37:35,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:37:35,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328599866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:35,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:37:35,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:37:35,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444022440] [2021-12-07 00:37:35,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:35,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:37:35,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:35,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:37:35,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:37:35,960 INFO L87 Difference]: Start difference. First operand 176056 states and 282372 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:37:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:54,870 INFO L93 Difference]: Finished difference Result 520033 states and 838454 transitions. [2021-12-07 00:37:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:37:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 201 [2021-12-07 00:37:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:56,040 INFO L225 Difference]: With dead ends: 520033 [2021-12-07 00:37:56,041 INFO L226 Difference]: Without dead ends: 346114 [2021-12-07 00:37:56,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:37:56,381 INFO L933 BasicCegarLoop]: 4366 mSDtfsCounter, 4276 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4276 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:56,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4276 Valid, 4727 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:37:56,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346114 states. [2021-12-07 00:38:16,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346114 to 344566. [2021-12-07 00:38:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344566 states, 313790 states have (on average 1.5195098632843622) internal successors, (476807), 315845 states have internal predecessors, (476807), 19974 states have call successors, (19974), 9265 states have call predecessors, (19974), 10800 states have return successors, (55227), 19711 states have call predecessors, (55227), 19972 states have call successors, (55227) [2021-12-07 00:38:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344566 states to 344566 states and 552008 transitions. [2021-12-07 00:38:17,760 INFO L78 Accepts]: Start accepts. Automaton has 344566 states and 552008 transitions. Word has length 201 [2021-12-07 00:38:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:17,760 INFO L470 AbstractCegarLoop]: Abstraction has 344566 states and 552008 transitions. [2021-12-07 00:38:17,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:38:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 344566 states and 552008 transitions. [2021-12-07 00:38:18,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-07 00:38:18,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:18,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:18,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:38:18,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 00:38:18,383 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:38:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2140206378, now seen corresponding path program 1 times [2021-12-07 00:38:18,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:18,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454799891] [2021-12-07 00:38:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:18,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:38:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:38:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:38:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:38:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:38:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:38:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:38:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-07 00:38:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:38:18,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:18,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454799891] [2021-12-07 00:38:18,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454799891] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:18,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123443823] [2021-12-07 00:38:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:18,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:18,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:18,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:18,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:38:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:18,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:38:18,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-07 00:38:18,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:18,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123443823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:18,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:38:18,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:38:18,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871627191] [2021-12-07 00:38:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:18,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:38:18,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:38:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:38:18,744 INFO L87 Difference]: Start difference. First operand 344566 states and 552008 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:38:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:57,513 INFO L93 Difference]: Finished difference Result 1024007 states and 1649992 transitions. [2021-12-07 00:38:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:38:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 201 [2021-12-07 00:38:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:00,042 INFO L225 Difference]: With dead ends: 1024007 [2021-12-07 00:39:00,042 INFO L226 Difference]: Without dead ends: 681578 [2021-12-07 00:39:00,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:39:00,909 INFO L933 BasicCegarLoop]: 4366 mSDtfsCounter, 4294 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:00,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4294 Valid, 4727 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:39:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681578 states. [2021-12-07 00:39:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681578 to 678486. [2021-12-07 00:39:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678486 states, 617718 states have (on average 1.517318582265694) internal successors, (937275), 621825 states have internal predecessors, (937275), 39166 states have call successors, (39166), 18529 states have call predecessors, (39166), 21600 states have return successors, (109419), 38387 states have call predecessors, (109419), 39164 states have call successors, (109419) [2021-12-07 00:39:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678486 states to 678486 states and 1085860 transitions. [2021-12-07 00:39:45,815 INFO L78 Accepts]: Start accepts. Automaton has 678486 states and 1085860 transitions. Word has length 201 [2021-12-07 00:39:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:45,815 INFO L470 AbstractCegarLoop]: Abstraction has 678486 states and 1085860 transitions. [2021-12-07 00:39:45,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:39:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 678486 states and 1085860 transitions. [2021-12-07 00:39:46,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-07 00:39:46,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:46,897 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:39:46,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:39:47,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:47,099 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash 858243062, now seen corresponding path program 1 times [2021-12-07 00:39:47,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:47,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566308517] [2021-12-07 00:39:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:47,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:39:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:39:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:39:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:39:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:39:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:39:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:39:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-07 00:39:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:39:47,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:47,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566308517] [2021-12-07 00:39:47,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566308517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:47,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004861446] [2021-12-07 00:39:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:47,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:39:47,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:39:47,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:39:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:39:47,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:39:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-07 00:39:47,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:39:47,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004861446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:47,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:39:47,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:39:47,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514590818] [2021-12-07 00:39:47,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:47,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:39:47,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:47,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:39:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:39:47,464 INFO L87 Difference]: Start difference. First operand 678486 states and 1085860 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:41:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:05,057 INFO L93 Difference]: Finished difference Result 2020351 states and 3252964 transitions. [2021-12-07 00:41:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:05,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 201 [2021-12-07 00:41:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:10,279 INFO L225 Difference]: With dead ends: 2020351 [2021-12-07 00:41:10,279 INFO L226 Difference]: Without dead ends: 1344002 [2021-12-07 00:41:12,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:41:12,170 INFO L933 BasicCegarLoop]: 4366 mSDtfsCounter, 4288 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4288 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:12,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4288 Valid, 4727 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344002 states. [2021-12-07 00:42:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344002 to 1337822. [2021-12-07 00:42:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337822 states, 1217846 states have (on average 1.5156686477600616) internal successors, (1845851), 1226057 states have internal predecessors, (1845851), 76774 states have call successors, (76774), 37057 states have call predecessors, (76774), 43200 states have return successors, (217027), 74963 states have call predecessors, (217027), 76772 states have call successors, (217027) [2021-12-07 00:42:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337822 states to 1337822 states and 2139652 transitions. [2021-12-07 00:42:42,793 INFO L78 Accepts]: Start accepts. Automaton has 1337822 states and 2139652 transitions. Word has length 201 [2021-12-07 00:42:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:42,793 INFO L470 AbstractCegarLoop]: Abstraction has 1337822 states and 2139652 transitions. [2021-12-07 00:42:42,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:42:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1337822 states and 2139652 transitions. [2021-12-07 00:42:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-07 00:42:44,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:44,746 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:44,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:42:44,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:42:44,948 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:42:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:44,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1219048170, now seen corresponding path program 1 times [2021-12-07 00:42:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:44,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794987755] [2021-12-07 00:42:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:44,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:42:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:42:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:42:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:42:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:42:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:42:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:42:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-07 00:42:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:42:45,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794987755] [2021-12-07 00:42:45,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794987755] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:42:45,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745382523] [2021-12-07 00:42:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:45,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:42:45,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:42:45,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:42:45,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0015dd-5a25-45e5-893b-49cb2c2c27da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:42:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:42:45,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-07 00:42:45,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:45,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745382523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:45,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:42:45,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 00:42:45,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134722888] [2021-12-07 00:42:45,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:45,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:42:45,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:42:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:42:45,292 INFO L87 Difference]: Start difference. First operand 1337822 states and 2139652 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 00:45:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:45:25,260 INFO L93 Difference]: Finished difference Result 3967933 states and 6398843 transitions. [2021-12-07 00:45:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:45:25,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 201 [2021-12-07 00:45:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:45:36,709 INFO L225 Difference]: With dead ends: 3967933 [2021-12-07 00:45:36,709 INFO L226 Difference]: Without dead ends: 2632249