./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF --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 0385e1d16d423c194d4048fc3b294994e5a7e416b8435d95ed6181aeb075af1b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:21:36,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:21:36,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:21:36,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:21:36,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:21:36,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:21:36,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:21:36,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:21:36,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:21:36,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:21:36,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:21:36,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:21:36,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:21:36,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:21:36,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:21:36,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:21:36,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:21:36,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:21:36,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:21:36,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:21:36,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:21:36,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:21:36,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:21:36,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:21:36,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:21:36,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:21:36,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:21:36,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:21:36,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:21:36,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:21:36,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:21:36,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:21:36,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:21:36,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:21:36,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:21:36,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:21:36,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:21:36,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:21:36,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:21:36,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:21:36,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:21:36,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:21:36,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:21:36,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:21:36,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:21:36,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:21:36,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:21:36,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:21:36,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:21:36,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:21:36,887 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:21:36,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:21:36,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:21:36,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:21:36,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:21:36,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:21:36,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:21:36,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:21:36,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:21:36,891 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:21:36,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:21:36,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:21:36,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:21:36,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:21:36,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:21:36,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:21:36,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:36,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:21:36,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:21:36,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:21:36,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:21:36,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:21:36,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:21:36,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:21:36,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:21:36,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:21:36,897 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_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0385e1d16d423c194d4048fc3b294994e5a7e416b8435d95ed6181aeb075af1b [2021-11-20 06:21:37,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:21:37,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:21:37,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:21:37,212 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:21:37,213 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:21:37,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-1.c [2021-11-20 06:21:37,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/data/d26172d78/1864786848914494acd8be5a3710738e/FLAGd8d7576d4 [2021-11-20 06:21:38,378 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:21:38,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-1.c [2021-11-20 06:21:38,432 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/data/d26172d78/1864786848914494acd8be5a3710738e/FLAGd8d7576d4 [2021-11-20 06:21:38,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/data/d26172d78/1864786848914494acd8be5a3710738e [2021-11-20 06:21:38,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:21:38,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:21:38,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:38,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:21:38,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:21:38,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:38" (1/1) ... [2021-11-20 06:21:38,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45095b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:38, skipping insertion in model container [2021-11-20 06:21:38,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:38" (1/1) ... [2021-11-20 06:21:38,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:21:38,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:21:41,760 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_bcd157ce-98cc-4a12-9c66-762c01486249/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-1.c[382357,382370] [2021-11-20 06:21:41,798 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_bcd157ce-98cc-4a12-9c66-762c01486249/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-1.c[383339,383352] [2021-11-20 06:21:42,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:42,188 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:21:43,474 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_bcd157ce-98cc-4a12-9c66-762c01486249/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-1.c[382357,382370] [2021-11-20 06:21:43,479 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_bcd157ce-98cc-4a12-9c66-762c01486249/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-1.c[383339,383352] [2021-11-20 06:21:43,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:43,601 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:21:43,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43 WrapperNode [2021-11-20 06:21:43,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:43,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:21:43,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:21:43,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:21:43,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:43,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,126 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2021-11-20 06:21:44,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:21:44,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:21:44,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:21:44,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:21:44,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:21:44,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:21:44,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:21:44,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:21:44,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (1/1) ... [2021-11-20 06:21:44,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:44,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:44,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:21:44,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd157ce-98cc-4a12-9c66-762c01486249/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:21:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:21:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-20 06:21:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-20 06:21:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-20 06:21:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-20 06:21:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-20 06:21:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-20 06:21:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-20 06:21:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-20 06:21:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-20 06:21:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-20 06:21:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-20 06:21:44,949 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-20 06:21:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:21:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:21:44,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:21:45,174 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:21:45,176 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:21:53,270 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:21:53,313 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:21:53,313 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-20 06:21:53,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:21:53 BoogieIcfgContainer [2021-11-20 06:21:53,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:21:53,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:21:53,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:21:53,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:21:53,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:21:38" (1/3) ... [2021-11-20 06:21:53,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4e7547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:21:53, skipping insertion in model container [2021-11-20 06:21:53,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:43" (2/3) ... [2021-11-20 06:21:53,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4e7547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:21:53, skipping insertion in model container [2021-11-20 06:21:53,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:21:53" (3/3) ... [2021-11-20 06:21:53,328 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.08.cil-1.c [2021-11-20 06:21:53,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:21:53,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:21:53,407 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:21:53,415 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:21:53,415 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:21:53,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:21:53,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:53,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:53,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2021-11-20 06:21:53,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:53,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458427208] [2021-11-20 06:21:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:53,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:21:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:53,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:21:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:21:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:54,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:21:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:21:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:54,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:54,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458427208] [2021-11-20 06:21:54,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458427208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:54,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:54,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:21:54,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764385663] [2021-11-20 06:21:54,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:54,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:21:54,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:21:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:54,230 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:21:55,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:55,789 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2021-11-20 06:21:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:21:55,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:21:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:55,824 INFO L225 Difference]: With dead ends: 5022 [2021-11-20 06:21:55,825 INFO L226 Difference]: Without dead ends: 2496 [2021-11-20 06:21:55,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:21:55,839 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16876 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:55,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 16876 Invalid, 547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:21:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-11-20 06:21:56,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2021-11-20 06:21:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2021-11-20 06:21:56,043 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2021-11-20 06:21:56,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:56,044 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2021-11-20 06:21:56,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:21:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2021-11-20 06:21:56,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:21:56,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:56,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:56,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:21:56,057 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:56,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:56,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2021-11-20 06:21:56,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:56,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114020540] [2021-11-20 06:21:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:56,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:56,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:21:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:21:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:21:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:21:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:56,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:21:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:56,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:56,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114020540] [2021-11-20 06:21:56,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114020540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:56,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:56,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:21:56,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44239353] [2021-11-20 06:21:56,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:56,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:21:56,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:56,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:21:56,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:21:56,555 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:21:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:59,193 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2021-11-20 06:21:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:21:59,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:21:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:59,217 INFO L225 Difference]: With dead ends: 3126 [2021-11-20 06:21:59,217 INFO L226 Difference]: Without dead ends: 2865 [2021-11-20 06:21:59,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:21:59,226 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12616 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:59,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 17082 Invalid, 1481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:21:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-11-20 06:21:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2021-11-20 06:21:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-20 06:21:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2021-11-20 06:21:59,378 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2021-11-20 06:21:59,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:59,380 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2021-11-20 06:21:59,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:21:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2021-11-20 06:21:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:21:59,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:59,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:59,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:21:59,388 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:59,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:59,389 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2021-11-20 06:21:59,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:59,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981690580] [2021-11-20 06:21:59,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:59,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:59,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:21:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:21:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:21:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:21:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:59,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:21:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:59,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:59,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981690580] [2021-11-20 06:21:59,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981690580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:59,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:59,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:21:59,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958079422] [2021-11-20 06:21:59,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:59,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:21:59,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:59,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:21:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:21:59,656 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:01,460 INFO L93 Difference]: Finished difference Result 3412 states and 6012 transitions. [2021-11-20 06:22:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:01,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:01,482 INFO L225 Difference]: With dead ends: 3412 [2021-11-20 06:22:01,482 INFO L226 Difference]: Without dead ends: 2879 [2021-11-20 06:22:01,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:22:01,497 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 4746 mSDsluCounter, 16509 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 20926 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:01,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4762 Valid, 20926 Invalid, 1150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 06:22:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-11-20 06:22:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2670. [2021-11-20 06:22:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8096330275229358) internal successors, (4734), 2619 states have internal predecessors, (4734), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-20 06:22:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4815 transitions. [2021-11-20 06:22:01,630 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4815 transitions. Word has length 134 [2021-11-20 06:22:01,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:01,631 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4815 transitions. [2021-11-20 06:22:01,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4815 transitions. [2021-11-20 06:22:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:01,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:01,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:01,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:22:01,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2021-11-20 06:22:01,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:01,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697918937] [2021-11-20 06:22:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:01,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:01,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:01,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:01,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697918937] [2021-11-20 06:22:01,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697918937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:01,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:01,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:01,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525182544] [2021-11-20 06:22:01,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:01,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:01,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:01,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:01,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:01,824 INFO L87 Difference]: Start difference. First operand 2670 states and 4815 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:04,771 INFO L93 Difference]: Finished difference Result 3775 states and 6579 transitions. [2021-11-20 06:22:04,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:22:04,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:04,795 INFO L225 Difference]: With dead ends: 3775 [2021-11-20 06:22:04,796 INFO L226 Difference]: Without dead ends: 3242 [2021-11-20 06:22:04,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:22:04,810 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 5127 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5142 SdHoareTripleChecker+Valid, 21330 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:04,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5142 Valid, 21330 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 06:22:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2021-11-20 06:22:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2923. [2021-11-20 06:22:04,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.78804920913884) internal successors, (5087), 2849 states have internal predecessors, (5087), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-11-20 06:22:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5204 transitions. [2021-11-20 06:22:04,986 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5204 transitions. Word has length 134 [2021-11-20 06:22:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:04,987 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5204 transitions. [2021-11-20 06:22:04,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5204 transitions. [2021-11-20 06:22:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:04,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:04,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:04,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:22:04,991 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2021-11-20 06:22:04,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:04,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370981167] [2021-11-20 06:22:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:04,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:05,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:05,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370981167] [2021-11-20 06:22:05,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370981167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:05,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:05,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:05,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414110571] [2021-11-20 06:22:05,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:05,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:05,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:05,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:05,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:05,152 INFO L87 Difference]: Start difference. First operand 2923 states and 5204 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:08,176 INFO L93 Difference]: Finished difference Result 4734 states and 8088 transitions. [2021-11-20 06:22:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:22:08,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:08,214 INFO L225 Difference]: With dead ends: 4734 [2021-11-20 06:22:08,214 INFO L226 Difference]: Without dead ends: 3948 [2021-11-20 06:22:08,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:22:08,220 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 5060 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5075 SdHoareTripleChecker+Valid, 21906 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:08,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5075 Valid, 21906 Invalid, 2221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 06:22:08,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-11-20 06:22:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3431. [2021-11-20 06:22:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7537065052950076) internal successors, (5796), 3311 states have internal predecessors, (5796), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-11-20 06:22:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5989 transitions. [2021-11-20 06:22:08,428 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5989 transitions. Word has length 134 [2021-11-20 06:22:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:08,429 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5989 transitions. [2021-11-20 06:22:08,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5989 transitions. [2021-11-20 06:22:08,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:08,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:08,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:08,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:22:08,434 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2021-11-20 06:22:08,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:08,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724160210] [2021-11-20 06:22:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:08,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:08,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:08,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724160210] [2021-11-20 06:22:08,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724160210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:08,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:08,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:08,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727531051] [2021-11-20 06:22:08,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:08,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:08,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:08,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:08,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:08,592 INFO L87 Difference]: Start difference. First operand 3431 states and 5989 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:09,976 INFO L93 Difference]: Finished difference Result 5228 states and 8858 transitions. [2021-11-20 06:22:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:09,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:10,005 INFO L225 Difference]: With dead ends: 5228 [2021-11-20 06:22:10,005 INFO L226 Difference]: Without dead ends: 3934 [2021-11-20 06:22:10,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:22:10,011 INFO L933 BasicCegarLoop]: 4402 mSDtfsCounter, 4865 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4881 SdHoareTripleChecker+Valid, 16810 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:10,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4881 Valid, 16810 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:22:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2021-11-20 06:22:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3431. [2021-11-20 06:22:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7521936459909229) internal successors, (5791), 3311 states have internal predecessors, (5791), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-11-20 06:22:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5984 transitions. [2021-11-20 06:22:10,185 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5984 transitions. Word has length 134 [2021-11-20 06:22:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:10,186 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5984 transitions. [2021-11-20 06:22:10,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5984 transitions. [2021-11-20 06:22:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:10,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:10,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:10,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:22:10,190 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2021-11-20 06:22:10,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:10,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613027291] [2021-11-20 06:22:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:10,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:10,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:10,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:10,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613027291] [2021-11-20 06:22:10,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613027291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:10,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:10,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:10,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122147352] [2021-11-20 06:22:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:10,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:10,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:10,344 INFO L87 Difference]: Start difference. First operand 3431 states and 5984 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:11,567 INFO L93 Difference]: Finished difference Result 5222 states and 8831 transitions. [2021-11-20 06:22:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:11,594 INFO L225 Difference]: With dead ends: 5222 [2021-11-20 06:22:11,594 INFO L226 Difference]: Without dead ends: 3928 [2021-11-20 06:22:11,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:22:11,600 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4863 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4879 SdHoareTripleChecker+Valid, 16806 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:11,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4879 Valid, 16806 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 06:22:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2021-11-20 06:22:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3431. [2021-11-20 06:22:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7506807866868381) internal successors, (5786), 3311 states have internal predecessors, (5786), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-11-20 06:22:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5979 transitions. [2021-11-20 06:22:11,776 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5979 transitions. Word has length 134 [2021-11-20 06:22:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:11,777 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5979 transitions. [2021-11-20 06:22:11,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5979 transitions. [2021-11-20 06:22:11,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:11,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:11,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:11,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:22:11,782 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:11,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2021-11-20 06:22:11,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:11,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494335571] [2021-11-20 06:22:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:11,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:11,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:11,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:11,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494335571] [2021-11-20 06:22:11,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494335571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:11,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:11,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:11,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242879100] [2021-11-20 06:22:11,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:11,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:11,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:11,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:11,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:11,927 INFO L87 Difference]: Start difference. First operand 3431 states and 5979 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:13,258 INFO L93 Difference]: Finished difference Result 5216 states and 8804 transitions. [2021-11-20 06:22:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:13,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:13,285 INFO L225 Difference]: With dead ends: 5216 [2021-11-20 06:22:13,285 INFO L226 Difference]: Without dead ends: 3922 [2021-11-20 06:22:13,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:22:13,292 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 4743 mSDsluCounter, 16508 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 20902 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:13,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 20902 Invalid, 1098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:22:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-11-20 06:22:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3431. [2021-11-20 06:22:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7491679273827534) internal successors, (5781), 3311 states have internal predecessors, (5781), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-11-20 06:22:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5974 transitions. [2021-11-20 06:22:13,470 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5974 transitions. Word has length 134 [2021-11-20 06:22:13,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:13,471 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5974 transitions. [2021-11-20 06:22:13,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5974 transitions. [2021-11-20 06:22:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:13,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:13,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:13,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:22:13,475 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2021-11-20 06:22:13,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:13,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765197108] [2021-11-20 06:22:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:13,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:13,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:13,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:13,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:13,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765197108] [2021-11-20 06:22:13,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765197108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:13,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:13,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:13,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070867152] [2021-11-20 06:22:13,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:13,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:13,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:13,626 INFO L87 Difference]: Start difference. First operand 3431 states and 5974 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:16,502 INFO L93 Difference]: Finished difference Result 6562 states and 10871 transitions. [2021-11-20 06:22:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:22:16,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:16,526 INFO L225 Difference]: With dead ends: 6562 [2021-11-20 06:22:16,526 INFO L226 Difference]: Without dead ends: 5268 [2021-11-20 06:22:16,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:22:16,534 INFO L933 BasicCegarLoop]: 4635 mSDtfsCounter, 5029 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5044 SdHoareTripleChecker+Valid, 21878 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:16,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5044 Valid, 21878 Invalid, 2146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:22:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2021-11-20 06:22:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4469. [2021-11-20 06:22:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4247 states have (on average 1.6993171650576877) internal successors, (7217), 4257 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-11-20 06:22:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7568 transitions. [2021-11-20 06:22:16,796 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7568 transitions. Word has length 134 [2021-11-20 06:22:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:16,796 INFO L470 AbstractCegarLoop]: Abstraction has 4469 states and 7568 transitions. [2021-11-20 06:22:16,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7568 transitions. [2021-11-20 06:22:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:16,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:16,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:16,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:22:16,801 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:16,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2021-11-20 06:22:16,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:16,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277319513] [2021-11-20 06:22:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:16,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:16,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:16,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:16,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277319513] [2021-11-20 06:22:16,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277319513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:16,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:16,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:16,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210305086] [2021-11-20 06:22:16,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:16,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:16,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:16,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:16,966 INFO L87 Difference]: Start difference. First operand 4469 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:20,094 INFO L93 Difference]: Finished difference Result 11236 states and 18097 transitions. [2021-11-20 06:22:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:22:20,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:20,129 INFO L225 Difference]: With dead ends: 11236 [2021-11-20 06:22:20,129 INFO L226 Difference]: Without dead ends: 8904 [2021-11-20 06:22:20,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:22:20,139 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 5358 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5382 SdHoareTripleChecker+Valid, 21863 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:20,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5382 Valid, 21863 Invalid, 2136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 06:22:20,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8904 states. [2021-11-20 06:22:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8904 to 6520. [2021-11-20 06:22:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6520 states, 6114 states have (on average 1.6465489041543997) internal successors, (10067), 6132 states have internal predecessors, (10067), 286 states have call successors, (286), 102 states have call predecessors, (286), 118 states have return successors, (383), 301 states have call predecessors, (383), 286 states have call successors, (383) [2021-11-20 06:22:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 10736 transitions. [2021-11-20 06:22:20,595 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 10736 transitions. Word has length 134 [2021-11-20 06:22:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:20,595 INFO L470 AbstractCegarLoop]: Abstraction has 6520 states and 10736 transitions. [2021-11-20 06:22:20,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 10736 transitions. [2021-11-20 06:22:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:20,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:20,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:20,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:22:20,603 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2021-11-20 06:22:20,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:20,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987897657] [2021-11-20 06:22:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:20,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:20,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:20,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987897657] [2021-11-20 06:22:20,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987897657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:20,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:20,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:20,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831547809] [2021-11-20 06:22:20,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:20,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:20,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:20,746 INFO L87 Difference]: Start difference. First operand 6520 states and 10736 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:24,531 INFO L93 Difference]: Finished difference Result 19345 states and 30719 transitions. [2021-11-20 06:22:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:22:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:24,591 INFO L225 Difference]: With dead ends: 19345 [2021-11-20 06:22:24,591 INFO L226 Difference]: Without dead ends: 14962 [2021-11-20 06:22:24,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:22:24,613 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 5162 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 21405 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:24,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5176 Valid, 21405 Invalid, 2331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 06:22:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14962 states. [2021-11-20 06:22:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14962 to 10533. [2021-11-20 06:22:25,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 9767 states have (on average 1.6018224633971536) internal successors, (15645), 9801 states have internal predecessors, (15645), 534 states have call successors, (534), 198 states have call predecessors, (534), 230 states have return successors, (809), 565 states have call predecessors, (809), 534 states have call successors, (809) [2021-11-20 06:22:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 16988 transitions. [2021-11-20 06:22:25,481 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 16988 transitions. Word has length 134 [2021-11-20 06:22:25,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:25,481 INFO L470 AbstractCegarLoop]: Abstraction has 10533 states and 16988 transitions. [2021-11-20 06:22:25,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 16988 transitions. [2021-11-20 06:22:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:25,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:25,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:25,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:22:25,492 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2021-11-20 06:22:25,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:25,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241828491] [2021-11-20 06:22:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:25,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:25,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:25,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241828491] [2021-11-20 06:22:25,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241828491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:25,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:25,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:25,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316483943] [2021-11-20 06:22:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:25,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:25,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:25,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:25,624 INFO L87 Difference]: Start difference. First operand 10533 states and 16988 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:30,449 INFO L93 Difference]: Finished difference Result 35028 states and 55309 transitions. [2021-11-20 06:22:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:22:30,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:30,556 INFO L225 Difference]: With dead ends: 35028 [2021-11-20 06:22:30,556 INFO L226 Difference]: Without dead ends: 26632 [2021-11-20 06:22:30,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:22:30,593 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 5281 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5305 SdHoareTripleChecker+Valid, 21851 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:30,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5305 Valid, 21851 Invalid, 2120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:22:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26632 states. [2021-11-20 06:22:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26632 to 18622. [2021-11-20 06:22:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18622 states, 17152 states have (on average 1.5708372201492538) internal successors, (26943), 17218 states have internal predecessors, (26943), 1014 states have call successors, (1014), 390 states have call predecessors, (1014), 454 states have return successors, (1807), 1077 states have call predecessors, (1807), 1014 states have call successors, (1807) [2021-11-20 06:22:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18622 states to 18622 states and 29764 transitions. [2021-11-20 06:22:32,310 INFO L78 Accepts]: Start accepts. Automaton has 18622 states and 29764 transitions. Word has length 134 [2021-11-20 06:22:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:32,311 INFO L470 AbstractCegarLoop]: Abstraction has 18622 states and 29764 transitions. [2021-11-20 06:22:32,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18622 states and 29764 transitions. [2021-11-20 06:22:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:32,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:32,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:32,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:22:32,331 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1883670420, now seen corresponding path program 1 times [2021-11-20 06:22:32,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:32,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808523043] [2021-11-20 06:22:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:32,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:32,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:32,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:32,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808523043] [2021-11-20 06:22:32,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808523043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:32,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:32,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:32,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962757422] [2021-11-20 06:22:32,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:32,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:32,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:32,490 INFO L87 Difference]: Start difference. First operand 18622 states and 29764 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:39,146 INFO L93 Difference]: Finished difference Result 65049 states and 103135 transitions. [2021-11-20 06:22:39,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:22:39,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:39,333 INFO L225 Difference]: With dead ends: 65049 [2021-11-20 06:22:39,333 INFO L226 Difference]: Without dead ends: 48564 [2021-11-20 06:22:39,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:22:39,400 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 5067 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 21918 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:39,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 21918 Invalid, 2363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 06:22:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48564 states. [2021-11-20 06:22:42,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48564 to 34832. [2021-11-20 06:22:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34832 states, 31986 states have (on average 1.5537735259175889) internal successors, (49699), 32116 states have internal predecessors, (49699), 1942 states have call successors, (1942), 774 states have call predecessors, (1942), 902 states have return successors, (4257), 2069 states have call predecessors, (4257), 1942 states have call successors, (4257) [2021-11-20 06:22:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34832 states to 34832 states and 55898 transitions. [2021-11-20 06:22:42,795 INFO L78 Accepts]: Start accepts. Automaton has 34832 states and 55898 transitions. Word has length 134 [2021-11-20 06:22:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:42,798 INFO L470 AbstractCegarLoop]: Abstraction has 34832 states and 55898 transitions. [2021-11-20 06:22:42,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand 34832 states and 55898 transitions. [2021-11-20 06:22:42,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:42,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:42,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:42,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:22:42,827 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:42,828 INFO L85 PathProgramCache]: Analyzing trace with hash 544588202, now seen corresponding path program 1 times [2021-11-20 06:22:42,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:42,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76849384] [2021-11-20 06:22:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:42,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:42,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:42,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76849384] [2021-11-20 06:22:42,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76849384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:42,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:42,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:42,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601903773] [2021-11-20 06:22:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:42,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:42,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:42,980 INFO L87 Difference]: Start difference. First operand 34832 states and 55898 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:47,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:47,885 INFO L93 Difference]: Finished difference Result 76944 states and 124691 transitions. [2021-11-20 06:22:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:47,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:22:47,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:48,092 INFO L225 Difference]: With dead ends: 76944 [2021-11-20 06:22:48,092 INFO L226 Difference]: Without dead ends: 44249 [2021-11-20 06:22:48,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:22:48,208 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4745 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4761 SdHoareTripleChecker+Valid, 20877 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:48,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4761 Valid, 20877 Invalid, 1049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:22:48,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44249 states. [2021-11-20 06:22:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44249 to 34832. [2021-11-20 06:22:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34832 states, 31986 states have (on average 1.5497405114737697) internal successors, (49570), 32116 states have internal predecessors, (49570), 1942 states have call successors, (1942), 774 states have call predecessors, (1942), 902 states have return successors, (4257), 2069 states have call predecessors, (4257), 1942 states have call successors, (4257) [2021-11-20 06:22:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34832 states to 34832 states and 55769 transitions. [2021-11-20 06:22:51,439 INFO L78 Accepts]: Start accepts. Automaton has 34832 states and 55769 transitions. Word has length 134 [2021-11-20 06:22:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:51,439 INFO L470 AbstractCegarLoop]: Abstraction has 34832 states and 55769 transitions. [2021-11-20 06:22:51,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:22:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 34832 states and 55769 transitions. [2021-11-20 06:22:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:22:51,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:51,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:51,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:22:51,471 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash -762554196, now seen corresponding path program 1 times [2021-11-20 06:22:51,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:51,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546968899] [2021-11-20 06:22:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:51,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:22:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:22:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:22:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:22:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:22:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:51,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:51,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546968899] [2021-11-20 06:22:51,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546968899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:51,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:51,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:51,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993570654] [2021-11-20 06:22:51,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:51,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:51,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:51,612 INFO L87 Difference]: Start difference. First operand 34832 states and 55769 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:23:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:23:01,816 INFO L93 Difference]: Finished difference Result 123015 states and 196927 transitions. [2021-11-20 06:23:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:23:01,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:23:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:23:02,153 INFO L225 Difference]: With dead ends: 123015 [2021-11-20 06:23:02,154 INFO L226 Difference]: Without dead ends: 90320 [2021-11-20 06:23:02,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:23:02,283 INFO L933 BasicCegarLoop]: 4640 mSDtfsCounter, 5039 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5053 SdHoareTripleChecker+Valid, 21875 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:23:02,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5053 Valid, 21875 Invalid, 2266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 06:23:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90320 states. [2021-11-20 06:23:08,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90320 to 67314. [2021-11-20 06:23:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67314 states, 61780 states have (on average 1.54001294917449) internal successors, (95142), 62038 states have internal predecessors, (95142), 3734 states have call successors, (3734), 1542 states have call predecessors, (3734), 1798 states have return successors, (10551), 3989 states have call predecessors, (10551), 3734 states have call successors, (10551) [2021-11-20 06:23:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67314 states to 67314 states and 109427 transitions. [2021-11-20 06:23:08,808 INFO L78 Accepts]: Start accepts. Automaton has 67314 states and 109427 transitions. Word has length 134 [2021-11-20 06:23:08,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:23:08,809 INFO L470 AbstractCegarLoop]: Abstraction has 67314 states and 109427 transitions. [2021-11-20 06:23:08,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:23:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 67314 states and 109427 transitions. [2021-11-20 06:23:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 06:23:08,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:23:08,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:23:08,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:23:08,857 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:23:08,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:23:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1134942570, now seen corresponding path program 1 times [2021-11-20 06:23:08,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:23:08,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456812668] [2021-11-20 06:23:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:23:08,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:23:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:23:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:23:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:23:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:08,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:23:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:08,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:23:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:23:08,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:23:08,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456812668] [2021-11-20 06:23:09,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456812668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:23:09,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:23:09,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:23:09,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096071839] [2021-11-20 06:23:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:23:09,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:23:09,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:23:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:23:09,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:23:09,002 INFO L87 Difference]: Start difference. First operand 67314 states and 109427 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:23:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:23:18,080 INFO L93 Difference]: Finished difference Result 150224 states and 248402 transitions. [2021-11-20 06:23:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:23:18,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 06:23:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:23:18,585 INFO L225 Difference]: With dead ends: 150224 [2021-11-20 06:23:18,585 INFO L226 Difference]: Without dead ends: 85047 [2021-11-20 06:23:18,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:23:18,711 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 4744 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 20870 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:23:18,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4760 Valid, 20870 Invalid, 1030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:23:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85047 states.