./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0 --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 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:03:25,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:03:25,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:03:25,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:03:25,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:03:25,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:03:25,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:03:25,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:03:25,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:03:25,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:03:25,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:03:25,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:03:25,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:03:25,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:03:25,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:03:25,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:03:25,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:03:25,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:03:25,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:03:25,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:03:25,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:03:25,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:03:25,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:03:25,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:03:25,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:03:25,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:03:25,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:03:25,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:03:25,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:03:25,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:03:25,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:03:25,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:03:25,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:03:25,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:03:25,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:03:25,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:03:25,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:03:25,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:03:25,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:03:25,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:03:25,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:03:25,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:03:25,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:03:25,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:03:25,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:03:25,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:03:25,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:03:25,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:03:25,817 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:03:25,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:03:25,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:03:25,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:03:25,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:03:25,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:03:25,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:03:25,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:03:25,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:03:25,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:03:25,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:03:25,821 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:03:25,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:03:25,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:03:25,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:03:25,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:03:25,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:03:25,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:03:25,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:03:25,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:03:25,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:03:25,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:03:25,824 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:03:25,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:03:25,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:03:25,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:03:25,827 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_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2021-11-22 16:03:26,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:03:26,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:03:26,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:03:26,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:03:26,141 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:03:26,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2021-11-22 16:03:26,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/data/efe801e7d/f45e9fef2ae543abb56b66e2a940c463/FLAGb88e84324 [2021-11-22 16:03:26,802 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:03:26,803 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2021-11-22 16:03:26,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/data/efe801e7d/f45e9fef2ae543abb56b66e2a940c463/FLAGb88e84324 [2021-11-22 16:03:27,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/data/efe801e7d/f45e9fef2ae543abb56b66e2a940c463 [2021-11-22 16:03:27,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:03:27,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:03:27,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:03:27,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:03:27,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:03:27,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a036f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27, skipping insertion in model container [2021-11-22 16:03:27,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:03:27,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:03:27,558 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_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2021-11-22 16:03:27,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:03:27,736 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:03:27,817 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_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2021-11-22 16:03:27,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:03:27,922 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:03:27,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27 WrapperNode [2021-11-22 16:03:27,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:03:27,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:03:27,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:03:27,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:03:27,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,224 INFO L137 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 192, calls inlined = 276, statements flattened = 8768 [2021-11-22 16:03:28,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:03:28,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:03:28,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:03:28,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:03:28,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:03:28,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:03:28,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:03:28,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:03:28,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:28,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:03:28,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:28,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:03:28,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee90791-61b7-46e1-a5e0-5ce8ac6014b1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:03:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:03:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:03:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:03:28,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:03:28,660 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:03:28,661 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:03:32,824 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:03:32,850 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:03:32,851 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:03:32,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:32 BoogieIcfgContainer [2021-11-22 16:03:32,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:03:32,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:03:32,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:03:32,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:03:32,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:03:27" (1/3) ... [2021-11-22 16:03:32,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d05cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:32, skipping insertion in model container [2021-11-22 16:03:32,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (2/3) ... [2021-11-22 16:03:32,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d05cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:32, skipping insertion in model container [2021-11-22 16:03:32,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:32" (3/3) ... [2021-11-22 16:03:32,864 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2021-11-22 16:03:32,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:03:32,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-22 16:03:32,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:03:32,936 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 [2021-11-22 16:03:32,937 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 16:03:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 2475 states, 2469 states have (on average 1.8687727825030376) internal successors, (4614), 2474 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 16:03:33,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:33,033 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] [2021-11-22 16:03:33,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:33,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:33,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1575373156, now seen corresponding path program 1 times [2021-11-22 16:03:33,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:33,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654970838] [2021-11-22 16:03:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:33,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:33,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:33,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654970838] [2021-11-22 16:03:33,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654970838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:33,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:33,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:03:33,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053632330] [2021-11-22 16:03:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:33,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:03:33,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:33,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:03:33,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:33,420 INFO L87 Difference]: Start difference. First operand has 2475 states, 2469 states have (on average 1.8687727825030376) internal successors, (4614), 2474 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:33,866 INFO L93 Difference]: Finished difference Result 7330 states and 13682 transitions. [2021-11-22 16:03:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:03:33,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 16:03:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:33,927 INFO L225 Difference]: With dead ends: 7330 [2021-11-22 16:03:33,928 INFO L226 Difference]: Without dead ends: 4857 [2021-11-22 16:03:33,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:33,948 INFO L933 BasicCegarLoop]: 9063 mSDtfsCounter, 4574 mSDsluCounter, 4481 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4574 SdHoareTripleChecker+Valid, 13544 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:33,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4574 Valid, 13544 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-11-22 16:03:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 2464. [2021-11-22 16:03:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2459 states have (on average 1.8662057747051648) internal successors, (4589), 2463 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4589 transitions. [2021-11-22 16:03:34,214 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4589 transitions. Word has length 64 [2021-11-22 16:03:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:34,214 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 4589 transitions. [2021-11-22 16:03:34,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4589 transitions. [2021-11-22 16:03:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 16:03:34,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:34,227 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] [2021-11-22 16:03:34,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:03:34,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:34,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1338424432, now seen corresponding path program 1 times [2021-11-22 16:03:34,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:34,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464319661] [2021-11-22 16:03:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:34,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:34,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:34,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464319661] [2021-11-22 16:03:34,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464319661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:34,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:34,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 16:03:34,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852031103] [2021-11-22 16:03:34,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:34,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:03:34,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:03:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:03:34,469 INFO L87 Difference]: Start difference. First operand 2464 states and 4589 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:35,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:35,330 INFO L93 Difference]: Finished difference Result 9622 states and 17944 transitions. [2021-11-22 16:03:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:03:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-22 16:03:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:35,380 INFO L225 Difference]: With dead ends: 9622 [2021-11-22 16:03:35,380 INFO L226 Difference]: Without dead ends: 7202 [2021-11-22 16:03:35,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:03:35,394 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 31583 mSDsluCounter, 13293 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31583 SdHoareTripleChecker+Valid, 17845 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:35,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31583 Valid, 17845 Invalid, 57 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7202 states. [2021-11-22 16:03:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7202 to 2460. [2021-11-22 16:03:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2455 states have (on average 1.864765784114053) internal successors, (4578), 2459 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4578 transitions. [2021-11-22 16:03:35,568 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4578 transitions. Word has length 71 [2021-11-22 16:03:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:35,569 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4578 transitions. [2021-11-22 16:03:35,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4578 transitions. [2021-11-22 16:03:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 16:03:35,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:35,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:35,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:03:35,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:35,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash 498348542, now seen corresponding path program 1 times [2021-11-22 16:03:35,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:35,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155307088] [2021-11-22 16:03:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:35,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:35,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155307088] [2021-11-22 16:03:35,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155307088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:35,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:35,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:35,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426198456] [2021-11-22 16:03:35,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:35,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:35,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:35,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:35,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:35,704 INFO L87 Difference]: Start difference. First operand 2460 states and 4578 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:36,224 INFO L93 Difference]: Finished difference Result 7263 states and 13538 transitions. [2021-11-22 16:03:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:36,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-22 16:03:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:36,256 INFO L225 Difference]: With dead ends: 7263 [2021-11-22 16:03:36,256 INFO L226 Difference]: Without dead ends: 4847 [2021-11-22 16:03:36,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:36,268 INFO L933 BasicCegarLoop]: 8868 mSDtfsCounter, 9083 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9083 SdHoareTripleChecker+Valid, 13290 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:36,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9083 Valid, 13290 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:03:36,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2021-11-22 16:03:36,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 2460. [2021-11-22 16:03:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2455 states have (on average 1.8610997963340121) internal successors, (4569), 2459 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4569 transitions. [2021-11-22 16:03:36,412 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4569 transitions. Word has length 73 [2021-11-22 16:03:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:36,413 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4569 transitions. [2021-11-22 16:03:36,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4569 transitions. [2021-11-22 16:03:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 16:03:36,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:36,419 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] [2021-11-22 16:03:36,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:03:36,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash 805580304, now seen corresponding path program 1 times [2021-11-22 16:03:36,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:36,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661371408] [2021-11-22 16:03:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:36,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:36,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:36,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661371408] [2021-11-22 16:03:36,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661371408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:36,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:36,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:36,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677172362] [2021-11-22 16:03:36,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:36,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:36,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:36,517 INFO L87 Difference]: Start difference. First operand 2460 states and 4569 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:36,982 INFO L93 Difference]: Finished difference Result 7263 states and 13520 transitions. [2021-11-22 16:03:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:36,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 16:03:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:37,034 INFO L225 Difference]: With dead ends: 7263 [2021-11-22 16:03:37,035 INFO L226 Difference]: Without dead ends: 4847 [2021-11-22 16:03:37,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:37,045 INFO L933 BasicCegarLoop]: 8868 mSDtfsCounter, 9064 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9064 SdHoareTripleChecker+Valid, 13290 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:37,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9064 Valid, 13290 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:03:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2021-11-22 16:03:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 2460. [2021-11-22 16:03:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2455 states have (on average 1.8574338085539714) internal successors, (4560), 2459 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4560 transitions. [2021-11-22 16:03:37,226 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4560 transitions. Word has length 75 [2021-11-22 16:03:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:37,227 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4560 transitions. [2021-11-22 16:03:37,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4560 transitions. [2021-11-22 16:03:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 16:03:37,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:37,230 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] [2021-11-22 16:03:37,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:03:37,231 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:37,231 INFO L85 PathProgramCache]: Analyzing trace with hash 983973556, now seen corresponding path program 1 times [2021-11-22 16:03:37,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:37,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941490334] [2021-11-22 16:03:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:37,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:37,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:37,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941490334] [2021-11-22 16:03:37,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941490334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:37,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:37,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:37,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607243593] [2021-11-22 16:03:37,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:37,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:37,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:37,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:37,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:37,294 INFO L87 Difference]: Start difference. First operand 2460 states and 4560 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:37,976 INFO L93 Difference]: Finished difference Result 11977 states and 22294 transitions. [2021-11-22 16:03:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 16:03:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:38,006 INFO L225 Difference]: With dead ends: 11977 [2021-11-22 16:03:38,006 INFO L226 Difference]: Without dead ends: 9561 [2021-11-22 16:03:38,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:38,012 INFO L933 BasicCegarLoop]: 17696 mSDtfsCounter, 9024 mSDsluCounter, 17649 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9024 SdHoareTripleChecker+Valid, 35345 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:38,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9024 Valid, 35345 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:03:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9561 states. [2021-11-22 16:03:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9561 to 2460. [2021-11-22 16:03:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2455 states have (on average 1.855804480651731) internal successors, (4556), 2459 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4556 transitions. [2021-11-22 16:03:38,191 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4556 transitions. Word has length 77 [2021-11-22 16:03:38,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:38,191 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4556 transitions. [2021-11-22 16:03:38,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4556 transitions. [2021-11-22 16:03:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 16:03:38,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:38,195 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] [2021-11-22 16:03:38,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:03:38,195 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:38,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1858425396, now seen corresponding path program 1 times [2021-11-22 16:03:38,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:38,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059231899] [2021-11-22 16:03:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:38,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:38,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:38,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059231899] [2021-11-22 16:03:38,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059231899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:38,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:38,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:38,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260369344] [2021-11-22 16:03:38,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:38,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:38,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:38,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:38,258 INFO L87 Difference]: Start difference. First operand 2460 states and 4556 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:38,724 INFO L93 Difference]: Finished difference Result 9599 states and 17858 transitions. [2021-11-22 16:03:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 16:03:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:38,746 INFO L225 Difference]: With dead ends: 9599 [2021-11-22 16:03:38,747 INFO L226 Difference]: Without dead ends: 7162 [2021-11-22 16:03:38,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:38,753 INFO L933 BasicCegarLoop]: 8920 mSDtfsCounter, 8898 mSDsluCounter, 8921 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8898 SdHoareTripleChecker+Valid, 17841 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:38,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8898 Valid, 17841 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7162 states. [2021-11-22 16:03:38,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7162 to 2442. [2021-11-22 16:03:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2437 states have (on average 1.856791136643414) internal successors, (4525), 2441 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 4525 transitions. [2021-11-22 16:03:38,962 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 4525 transitions. Word has length 77 [2021-11-22 16:03:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:38,962 INFO L470 AbstractCegarLoop]: Abstraction has 2442 states and 4525 transitions. [2021-11-22 16:03:38,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:38,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 4525 transitions. [2021-11-22 16:03:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 16:03:38,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:38,967 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] [2021-11-22 16:03:38,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 16:03:38,968 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:38,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1609995316, now seen corresponding path program 1 times [2021-11-22 16:03:38,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:38,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24282615] [2021-11-22 16:03:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:38,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:39,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:39,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24282615] [2021-11-22 16:03:39,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24282615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:39,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:39,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:39,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654298663] [2021-11-22 16:03:39,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:39,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:39,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:39,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:39,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:39,030 INFO L87 Difference]: Start difference. First operand 2442 states and 4525 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:39,418 INFO L93 Difference]: Finished difference Result 7227 states and 13433 transitions. [2021-11-22 16:03:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 16:03:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:39,433 INFO L225 Difference]: With dead ends: 7227 [2021-11-22 16:03:39,433 INFO L226 Difference]: Without dead ends: 4808 [2021-11-22 16:03:39,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:39,439 INFO L933 BasicCegarLoop]: 8854 mSDtfsCounter, 8939 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8939 SdHoareTripleChecker+Valid, 13276 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:39,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8939 Valid, 13276 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2021-11-22 16:03:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 2442. [2021-11-22 16:03:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2437 states have (on average 1.8543290931473122) internal successors, (4519), 2441 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 4519 transitions. [2021-11-22 16:03:39,599 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 4519 transitions. Word has length 78 [2021-11-22 16:03:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:39,600 INFO L470 AbstractCegarLoop]: Abstraction has 2442 states and 4519 transitions. [2021-11-22 16:03:39,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 4519 transitions. [2021-11-22 16:03:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 16:03:39,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:39,603 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] [2021-11-22 16:03:39,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 16:03:39,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:39,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1521327537, now seen corresponding path program 1 times [2021-11-22 16:03:39,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:39,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458483785] [2021-11-22 16:03:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:39,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:39,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:39,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458483785] [2021-11-22 16:03:39,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458483785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:39,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:39,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:39,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527068516] [2021-11-22 16:03:39,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:39,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:39,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:39,655 INFO L87 Difference]: Start difference. First operand 2442 states and 4519 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:40,030 INFO L93 Difference]: Finished difference Result 7227 states and 13421 transitions. [2021-11-22 16:03:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-22 16:03:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:40,044 INFO L225 Difference]: With dead ends: 7227 [2021-11-22 16:03:40,044 INFO L226 Difference]: Without dead ends: 4808 [2021-11-22 16:03:40,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:40,050 INFO L933 BasicCegarLoop]: 8854 mSDtfsCounter, 8929 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8929 SdHoareTripleChecker+Valid, 13276 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:40,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8929 Valid, 13276 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2021-11-22 16:03:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 2442. [2021-11-22 16:03:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2437 states have (on average 1.8518670496512104) internal successors, (4513), 2441 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 4513 transitions. [2021-11-22 16:03:40,202 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 4513 transitions. Word has length 79 [2021-11-22 16:03:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:40,203 INFO L470 AbstractCegarLoop]: Abstraction has 2442 states and 4513 transitions. [2021-11-22 16:03:40,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 4513 transitions. [2021-11-22 16:03:40,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 16:03:40,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:40,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:40,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 16:03:40,208 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash -871249105, now seen corresponding path program 1 times [2021-11-22 16:03:40,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:40,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543202919] [2021-11-22 16:03:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:40,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:40,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:40,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543202919] [2021-11-22 16:03:40,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543202919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:40,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:40,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:03:40,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381719763] [2021-11-22 16:03:40,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:40,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:03:40,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:40,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:03:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:03:40,278 INFO L87 Difference]: Start difference. First operand 2442 states and 4513 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:41,118 INFO L93 Difference]: Finished difference Result 11948 states and 22208 transitions. [2021-11-22 16:03:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:03:41,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-22 16:03:41,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:41,145 INFO L225 Difference]: With dead ends: 11948 [2021-11-22 16:03:41,145 INFO L226 Difference]: Without dead ends: 9535 [2021-11-22 16:03:41,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:03:41,153 INFO L933 BasicCegarLoop]: 4472 mSDtfsCounter, 40163 mSDsluCounter, 26417 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40163 SdHoareTripleChecker+Valid, 30889 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:41,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40163 Valid, 30889 Invalid, 110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2021-11-22 16:03:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 2444. [2021-11-22 16:03:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2439 states have (on average 1.8507585075850759) internal successors, (4514), 2443 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4514 transitions. [2021-11-22 16:03:41,327 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4514 transitions. Word has length 80 [2021-11-22 16:03:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:41,327 INFO L470 AbstractCegarLoop]: Abstraction has 2444 states and 4514 transitions. [2021-11-22 16:03:41,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4514 transitions. [2021-11-22 16:03:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 16:03:41,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:41,331 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] [2021-11-22 16:03:41,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:03:41,332 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:41,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1012948491, now seen corresponding path program 1 times [2021-11-22 16:03:41,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:41,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130932081] [2021-11-22 16:03:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:41,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:41,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:41,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130932081] [2021-11-22 16:03:41,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130932081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:41,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:41,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:03:41,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145200427] [2021-11-22 16:03:41,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:41,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:03:41,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:41,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:03:41,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:03:41,438 INFO L87 Difference]: Start difference. First operand 2444 states and 4514 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:42,254 INFO L93 Difference]: Finished difference Result 11938 states and 22185 transitions. [2021-11-22 16:03:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:03:42,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-22 16:03:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:42,284 INFO L225 Difference]: With dead ends: 11938 [2021-11-22 16:03:42,285 INFO L226 Difference]: Without dead ends: 9529 [2021-11-22 16:03:42,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:03:42,292 INFO L933 BasicCegarLoop]: 4471 mSDtfsCounter, 40148 mSDsluCounter, 26394 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40148 SdHoareTripleChecker+Valid, 30865 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:42,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40148 Valid, 30865 Invalid, 110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9529 states. [2021-11-22 16:03:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9529 to 2450. [2021-11-22 16:03:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2445 states have (on average 1.8498977505112475) internal successors, (4523), 2449 states have internal predecessors, (4523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 4523 transitions. [2021-11-22 16:03:42,471 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 4523 transitions. Word has length 82 [2021-11-22 16:03:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:42,471 INFO L470 AbstractCegarLoop]: Abstraction has 2450 states and 4523 transitions. [2021-11-22 16:03:42,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 4523 transitions. [2021-11-22 16:03:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 16:03:42,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:42,475 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] [2021-11-22 16:03:42,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 16:03:42,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -814321149, now seen corresponding path program 1 times [2021-11-22 16:03:42,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:42,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315707829] [2021-11-22 16:03:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:42,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:42,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:42,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315707829] [2021-11-22 16:03:42,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315707829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:42,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:42,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:03:42,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205472253] [2021-11-22 16:03:42,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:42,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:03:42,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:42,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:03:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:42,525 INFO L87 Difference]: Start difference. First operand 2450 states and 4523 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:42,702 INFO L93 Difference]: Finished difference Result 4837 states and 8959 transitions. [2021-11-22 16:03:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:03:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-22 16:03:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:42,710 INFO L225 Difference]: With dead ends: 4837 [2021-11-22 16:03:42,710 INFO L226 Difference]: Without dead ends: 2428 [2021-11-22 16:03:42,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:42,714 INFO L933 BasicCegarLoop]: 4483 mSDtfsCounter, 4439 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 4522 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:42,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4439 Valid, 4522 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-11-22 16:03:42,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2428. [2021-11-22 16:03:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2423 states have (on average 1.8514238547255468) internal successors, (4486), 2427 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 4486 transitions. [2021-11-22 16:03:42,870 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 4486 transitions. Word has length 84 [2021-11-22 16:03:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:42,870 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 4486 transitions. [2021-11-22 16:03:42,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 4486 transitions. [2021-11-22 16:03:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 16:03:42,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:42,874 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] [2021-11-22 16:03:42,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 16:03:42,875 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:42,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash 992949054, now seen corresponding path program 1 times [2021-11-22 16:03:42,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:42,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365482899] [2021-11-22 16:03:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:42,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:42,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:42,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365482899] [2021-11-22 16:03:42,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365482899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:42,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:42,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:03:42,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847943412] [2021-11-22 16:03:42,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:42,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:03:42,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:03:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:42,976 INFO L87 Difference]: Start difference. First operand 2428 states and 4486 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:43,194 INFO L93 Difference]: Finished difference Result 4785 states and 8880 transitions. [2021-11-22 16:03:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:43,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-22 16:03:43,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:43,202 INFO L225 Difference]: With dead ends: 4785 [2021-11-22 16:03:43,202 INFO L226 Difference]: Without dead ends: 2422 [2021-11-22 16:03:43,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:03:43,207 INFO L933 BasicCegarLoop]: 4464 mSDtfsCounter, 13281 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13281 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:43,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13281 Valid, 4589 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-11-22 16:03:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2422. [2021-11-22 16:03:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2417 states have (on average 1.8522962350020686) internal successors, (4477), 2421 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 4477 transitions. [2021-11-22 16:03:43,334 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 4477 transitions. Word has length 86 [2021-11-22 16:03:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:43,336 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 4477 transitions. [2021-11-22 16:03:43,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 4477 transitions. [2021-11-22 16:03:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 16:03:43,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:43,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:43,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 16:03:43,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash -223377730, now seen corresponding path program 1 times [2021-11-22 16:03:43,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:43,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139389057] [2021-11-22 16:03:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:43,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:43,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:43,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139389057] [2021-11-22 16:03:43,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139389057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:43,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:43,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:43,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819043368] [2021-11-22 16:03:43,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:43,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:43,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:43,411 INFO L87 Difference]: Start difference. First operand 2422 states and 4477 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:43,570 INFO L93 Difference]: Finished difference Result 4779 states and 8871 transitions. [2021-11-22 16:03:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:03:43,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-22 16:03:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:43,578 INFO L225 Difference]: With dead ends: 4779 [2021-11-22 16:03:43,578 INFO L226 Difference]: Without dead ends: 2408 [2021-11-22 16:03:43,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:43,583 INFO L933 BasicCegarLoop]: 4451 mSDtfsCounter, 8809 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8809 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:43,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8809 Valid, 4542 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:43,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2021-11-22 16:03:43,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2408. [2021-11-22 16:03:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2403 states have (on average 1.8543487307532251) internal successors, (4456), 2407 states have internal predecessors, (4456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 4456 transitions. [2021-11-22 16:03:43,713 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 4456 transitions. Word has length 86 [2021-11-22 16:03:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:43,714 INFO L470 AbstractCegarLoop]: Abstraction has 2408 states and 4456 transitions. [2021-11-22 16:03:43,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 4456 transitions. [2021-11-22 16:03:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 16:03:43,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:43,717 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] [2021-11-22 16:03:43,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 16:03:43,718 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1910235527, now seen corresponding path program 1 times [2021-11-22 16:03:43,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:43,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930123083] [2021-11-22 16:03:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:43,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:43,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:43,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930123083] [2021-11-22 16:03:43,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930123083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:43,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:43,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 16:03:43,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971781647] [2021-11-22 16:03:43,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:43,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:03:43,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:43,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:03:43,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:03:43,794 INFO L87 Difference]: Start difference. First operand 2408 states and 4456 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:44,085 INFO L93 Difference]: Finished difference Result 4782 states and 8869 transitions. [2021-11-22 16:03:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:03:44,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-22 16:03:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:44,092 INFO L225 Difference]: With dead ends: 4782 [2021-11-22 16:03:44,092 INFO L226 Difference]: Without dead ends: 2431 [2021-11-22 16:03:44,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:03:44,096 INFO L933 BasicCegarLoop]: 4454 mSDtfsCounter, 17635 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17635 SdHoareTripleChecker+Valid, 4643 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:44,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17635 Valid, 4643 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-22 16:03:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2408. [2021-11-22 16:03:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2403 states have (on average 1.853932584269663) internal successors, (4455), 2407 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 4455 transitions. [2021-11-22 16:03:44,227 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 4455 transitions. Word has length 87 [2021-11-22 16:03:44,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:44,228 INFO L470 AbstractCegarLoop]: Abstraction has 2408 states and 4455 transitions. [2021-11-22 16:03:44,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 4455 transitions. [2021-11-22 16:03:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 16:03:44,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:44,231 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] [2021-11-22 16:03:44,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 16:03:44,232 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:44,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash -991230043, now seen corresponding path program 1 times [2021-11-22 16:03:44,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:44,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967511295] [2021-11-22 16:03:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:44,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:44,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:44,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967511295] [2021-11-22 16:03:44,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967511295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:44,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:44,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 16:03:44,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478183199] [2021-11-22 16:03:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:44,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:03:44,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:03:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:03:44,318 INFO L87 Difference]: Start difference. First operand 2408 states and 4455 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:44,584 INFO L93 Difference]: Finished difference Result 4770 states and 8848 transitions. [2021-11-22 16:03:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:03:44,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-22 16:03:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:44,591 INFO L225 Difference]: With dead ends: 4770 [2021-11-22 16:03:44,591 INFO L226 Difference]: Without dead ends: 2425 [2021-11-22 16:03:44,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:03:44,595 INFO L933 BasicCegarLoop]: 4443 mSDtfsCounter, 17617 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17617 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:44,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17617 Valid, 4602 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-22 16:03:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2408. [2021-11-22 16:03:44,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2403 states have (on average 1.8535164377861006) internal successors, (4454), 2407 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 4454 transitions. [2021-11-22 16:03:44,723 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 4454 transitions. Word has length 88 [2021-11-22 16:03:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:44,723 INFO L470 AbstractCegarLoop]: Abstraction has 2408 states and 4454 transitions. [2021-11-22 16:03:44,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 4454 transitions. [2021-11-22 16:03:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-22 16:03:44,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:44,727 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] [2021-11-22 16:03:44,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 16:03:44,727 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash -407993467, now seen corresponding path program 1 times [2021-11-22 16:03:44,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:44,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90700647] [2021-11-22 16:03:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:44,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:44,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:44,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90700647] [2021-11-22 16:03:44,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90700647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:44,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:44,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:03:44,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812341975] [2021-11-22 16:03:44,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:44,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:44,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:44,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:44,780 INFO L87 Difference]: Start difference. First operand 2408 states and 4454 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:45,700 INFO L93 Difference]: Finished difference Result 6735 states and 12513 transitions. [2021-11-22 16:03:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:03:45,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-22 16:03:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:45,713 INFO L225 Difference]: With dead ends: 6735 [2021-11-22 16:03:45,713 INFO L226 Difference]: Without dead ends: 4398 [2021-11-22 16:03:45,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:45,718 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 11673 mSDsluCounter, 3738 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11673 SdHoareTripleChecker+Valid, 8215 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:45,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11673 Valid, 8215 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 16:03:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2021-11-22 16:03:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 2408. [2021-11-22 16:03:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2403 states have (on average 1.8223054515189347) internal successors, (4379), 2407 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 4379 transitions. [2021-11-22 16:03:45,875 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 4379 transitions. Word has length 89 [2021-11-22 16:03:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:45,875 INFO L470 AbstractCegarLoop]: Abstraction has 2408 states and 4379 transitions. [2021-11-22 16:03:45,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 4379 transitions. [2021-11-22 16:03:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 16:03:45,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:45,879 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] [2021-11-22 16:03:45,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 16:03:45,880 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash 702883185, now seen corresponding path program 1 times [2021-11-22 16:03:45,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:45,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740825870] [2021-11-22 16:03:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:45,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:45,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:45,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740825870] [2021-11-22 16:03:45,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740825870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:45,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:45,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:03:45,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040487758] [2021-11-22 16:03:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:45,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:03:45,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:03:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:03:45,960 INFO L87 Difference]: Start difference. First operand 2408 states and 4379 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:48,252 INFO L93 Difference]: Finished difference Result 20006 states and 36978 transitions. [2021-11-22 16:03:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 16:03:48,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-22 16:03:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:48,306 INFO L225 Difference]: With dead ends: 20006 [2021-11-22 16:03:48,306 INFO L226 Difference]: Without dead ends: 17687 [2021-11-22 16:03:48,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:03:48,313 INFO L933 BasicCegarLoop]: 9468 mSDtfsCounter, 30511 mSDsluCounter, 51269 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30511 SdHoareTripleChecker+Valid, 60737 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:48,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30511 Valid, 60737 Invalid, 1157 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 16:03:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17687 states. [2021-11-22 16:03:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17687 to 4730. [2021-11-22 16:03:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4725 states have (on average 1.8277248677248676) internal successors, (8636), 4729 states have internal predecessors, (8636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 8636 transitions. [2021-11-22 16:03:48,765 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 8636 transitions. Word has length 97 [2021-11-22 16:03:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:48,765 INFO L470 AbstractCegarLoop]: Abstraction has 4730 states and 8636 transitions. [2021-11-22 16:03:48,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:48,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 8636 transitions. [2021-11-22 16:03:48,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 16:03:48,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:48,772 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] [2021-11-22 16:03:48,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 16:03:48,772 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2012274063, now seen corresponding path program 1 times [2021-11-22 16:03:48,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:48,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757164371] [2021-11-22 16:03:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:48,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:48,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:48,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757164371] [2021-11-22 16:03:48,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757164371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:48,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:48,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:48,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926026073] [2021-11-22 16:03:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:48,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:03:48,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:03:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:48,833 INFO L87 Difference]: Start difference. First operand 4730 states and 8636 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:50,423 INFO L93 Difference]: Finished difference Result 18540 states and 34076 transitions. [2021-11-22 16:03:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:03:50,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-22 16:03:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:50,458 INFO L225 Difference]: With dead ends: 18540 [2021-11-22 16:03:50,458 INFO L226 Difference]: Without dead ends: 13967 [2021-11-22 16:03:50,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:03:50,467 INFO L933 BasicCegarLoop]: 9519 mSDtfsCounter, 15498 mSDsluCounter, 12655 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15498 SdHoareTripleChecker+Valid, 22174 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:50,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15498 Valid, 22174 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 16:03:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13967 states. [2021-11-22 16:03:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13967 to 4742. [2021-11-22 16:03:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 4737 states have (on average 1.8256280346210683) internal successors, (8648), 4741 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 8648 transitions. [2021-11-22 16:03:50,830 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 8648 transitions. Word has length 99 [2021-11-22 16:03:50,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:50,830 INFO L470 AbstractCegarLoop]: Abstraction has 4742 states and 8648 transitions. [2021-11-22 16:03:50,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 8648 transitions. [2021-11-22 16:03:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 16:03:50,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:50,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:50,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 16:03:50,837 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:50,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1329889748, now seen corresponding path program 1 times [2021-11-22 16:03:50,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:50,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176090082] [2021-11-22 16:03:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:50,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:50,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:50,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176090082] [2021-11-22 16:03:50,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176090082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:50,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:50,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:03:50,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399173847] [2021-11-22 16:03:50,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:50,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:03:50,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:03:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:50,896 INFO L87 Difference]: Start difference. First operand 4742 states and 8648 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:51,193 INFO L93 Difference]: Finished difference Result 9410 states and 17199 transitions. [2021-11-22 16:03:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:03:51,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-22 16:03:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:51,203 INFO L225 Difference]: With dead ends: 9410 [2021-11-22 16:03:51,203 INFO L226 Difference]: Without dead ends: 4755 [2021-11-22 16:03:51,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:03:51,209 INFO L933 BasicCegarLoop]: 4380 mSDtfsCounter, 12964 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12964 SdHoareTripleChecker+Valid, 4529 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:51,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12964 Valid, 4529 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4755 states. [2021-11-22 16:03:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4755 to 4738. [2021-11-22 16:03:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 4733 states have (on average 1.8250581026832875) internal successors, (8638), 4737 states have internal predecessors, (8638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 8638 transitions. [2021-11-22 16:03:51,519 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 8638 transitions. Word has length 99 [2021-11-22 16:03:51,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:51,519 INFO L470 AbstractCegarLoop]: Abstraction has 4738 states and 8638 transitions. [2021-11-22 16:03:51,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 8638 transitions. [2021-11-22 16:03:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-22 16:03:51,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:51,524 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] [2021-11-22 16:03:51,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 16:03:51,525 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:51,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:51,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1269403507, now seen corresponding path program 1 times [2021-11-22 16:03:51,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:51,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405525762] [2021-11-22 16:03:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:51,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:51,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:51,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405525762] [2021-11-22 16:03:51,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405525762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:51,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:51,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:03:51,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490900272] [2021-11-22 16:03:51,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:51,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:51,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:51,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:51,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:51,581 INFO L87 Difference]: Start difference. First operand 4738 states and 8638 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:53,053 INFO L93 Difference]: Finished difference Result 16266 states and 29907 transitions. [2021-11-22 16:03:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:53,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-22 16:03:53,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:53,066 INFO L225 Difference]: With dead ends: 16266 [2021-11-22 16:03:53,066 INFO L226 Difference]: Without dead ends: 11642 [2021-11-22 16:03:53,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:53,073 INFO L933 BasicCegarLoop]: 10782 mSDtfsCounter, 7235 mSDsluCounter, 9034 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7235 SdHoareTripleChecker+Valid, 19816 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:53,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7235 Valid, 19816 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 16:03:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2021-11-22 16:03:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 6481. [2021-11-22 16:03:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 6476 states have (on average 1.8074428659666462) internal successors, (11705), 6480 states have internal predecessors, (11705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 11705 transitions. [2021-11-22 16:03:53,610 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 11705 transitions. Word has length 100 [2021-11-22 16:03:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:53,610 INFO L470 AbstractCegarLoop]: Abstraction has 6481 states and 11705 transitions. [2021-11-22 16:03:53,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 11705 transitions. [2021-11-22 16:03:53,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-22 16:03:53,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:53,615 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] [2021-11-22 16:03:53,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 16:03:53,615 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:53,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 159148762, now seen corresponding path program 1 times [2021-11-22 16:03:53,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:53,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757443832] [2021-11-22 16:03:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:53,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:53,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:53,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757443832] [2021-11-22 16:03:53,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757443832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:53,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:53,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:03:53,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057652268] [2021-11-22 16:03:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:53,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:03:53,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:03:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:53,712 INFO L87 Difference]: Start difference. First operand 6481 states and 11705 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:53,978 INFO L93 Difference]: Finished difference Result 9690 states and 17506 transitions. [2021-11-22 16:03:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:03:53,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-22 16:03:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:53,983 INFO L225 Difference]: With dead ends: 9690 [2021-11-22 16:03:53,983 INFO L226 Difference]: Without dead ends: 3241 [2021-11-22 16:03:53,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:03:53,996 INFO L933 BasicCegarLoop]: 3961 mSDtfsCounter, 71 mSDsluCounter, 11799 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 15760 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:53,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 15760 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2021-11-22 16:03:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 3241. [2021-11-22 16:03:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3241 states, 3236 states have (on average 1.804079110012361) internal successors, (5838), 3240 states have internal predecessors, (5838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5838 transitions. [2021-11-22 16:03:54,296 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5838 transitions. Word has length 100 [2021-11-22 16:03:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:54,296 INFO L470 AbstractCegarLoop]: Abstraction has 3241 states and 5838 transitions. [2021-11-22 16:03:54,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:54,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5838 transitions. [2021-11-22 16:03:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-22 16:03:54,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:54,299 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] [2021-11-22 16:03:54,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 16:03:54,300 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:54,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2021253211, now seen corresponding path program 1 times [2021-11-22 16:03:54,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:54,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183578884] [2021-11-22 16:03:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:54,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:54,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:54,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183578884] [2021-11-22 16:03:54,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183578884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:54,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:54,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:54,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047503815] [2021-11-22 16:03:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:54,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:03:54,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:03:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:54,361 INFO L87 Difference]: Start difference. First operand 3241 states and 5838 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:55,579 INFO L93 Difference]: Finished difference Result 23102 states and 42002 transitions. [2021-11-22 16:03:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:03:55,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-22 16:03:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:55,601 INFO L225 Difference]: With dead ends: 23102 [2021-11-22 16:03:55,601 INFO L226 Difference]: Without dead ends: 19940 [2021-11-22 16:03:55,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:03:55,607 INFO L933 BasicCegarLoop]: 6206 mSDtfsCounter, 27918 mSDsluCounter, 18334 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27918 SdHoareTripleChecker+Valid, 24540 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:55,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27918 Valid, 24540 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19940 states. [2021-11-22 16:03:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19940 to 5905. [2021-11-22 16:03:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 5900 states have (on average 1.8171186440677967) internal successors, (10721), 5904 states have internal predecessors, (10721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 10721 transitions. [2021-11-22 16:03:56,108 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 10721 transitions. Word has length 102 [2021-11-22 16:03:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:56,108 INFO L470 AbstractCegarLoop]: Abstraction has 5905 states and 10721 transitions. [2021-11-22 16:03:56,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 10721 transitions. [2021-11-22 16:03:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-22 16:03:56,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:56,111 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] [2021-11-22 16:03:56,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 16:03:56,112 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1626886425, now seen corresponding path program 1 times [2021-11-22 16:03:56,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:56,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778604315] [2021-11-22 16:03:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:56,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:56,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:56,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778604315] [2021-11-22 16:03:56,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778604315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:56,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:56,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:03:56,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064008950] [2021-11-22 16:03:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:56,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:03:56,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:03:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:03:56,209 INFO L87 Difference]: Start difference. First operand 5905 states and 10721 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:57,077 INFO L93 Difference]: Finished difference Result 10702 states and 19356 transitions. [2021-11-22 16:03:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 16:03:57,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-22 16:03:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:57,087 INFO L225 Difference]: With dead ends: 10702 [2021-11-22 16:03:57,087 INFO L226 Difference]: Without dead ends: 8134 [2021-11-22 16:03:57,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:03:57,091 INFO L933 BasicCegarLoop]: 5446 mSDtfsCounter, 16762 mSDsluCounter, 7024 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16762 SdHoareTripleChecker+Valid, 12470 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:57,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16762 Valid, 12470 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:03:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8134 states. [2021-11-22 16:03:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8134 to 5895. [2021-11-22 16:03:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5895 states, 5890 states have (on average 1.8168081494057724) internal successors, (10701), 5894 states have internal predecessors, (10701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5895 states to 5895 states and 10701 transitions. [2021-11-22 16:03:57,556 INFO L78 Accepts]: Start accepts. Automaton has 5895 states and 10701 transitions. Word has length 102 [2021-11-22 16:03:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:57,557 INFO L470 AbstractCegarLoop]: Abstraction has 5895 states and 10701 transitions. [2021-11-22 16:03:57,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5895 states and 10701 transitions. [2021-11-22 16:03:57,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-22 16:03:57,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:57,560 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] [2021-11-22 16:03:57,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 16:03:57,561 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:57,562 INFO L85 PathProgramCache]: Analyzing trace with hash -270226625, now seen corresponding path program 1 times [2021-11-22 16:03:57,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:57,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775615796] [2021-11-22 16:03:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:57,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:57,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:57,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775615796] [2021-11-22 16:03:57,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775615796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:57,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:57,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:57,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852472081] [2021-11-22 16:03:57,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:57,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:03:57,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:03:57,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:57,634 INFO L87 Difference]: Start difference. First operand 5895 states and 10701 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:58,515 INFO L93 Difference]: Finished difference Result 18019 states and 32753 transitions. [2021-11-22 16:03:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 16:03:58,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-22 16:03:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:58,535 INFO L225 Difference]: With dead ends: 18019 [2021-11-22 16:03:58,535 INFO L226 Difference]: Without dead ends: 15457 [2021-11-22 16:03:58,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:03:58,541 INFO L933 BasicCegarLoop]: 4115 mSDtfsCounter, 16305 mSDsluCounter, 11379 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16305 SdHoareTripleChecker+Valid, 15494 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:58,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16305 Valid, 15494 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15457 states. [2021-11-22 16:03:59,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15457 to 8194. [2021-11-22 16:03:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8194 states, 8189 states have (on average 1.8123091952619368) internal successors, (14841), 8193 states have internal predecessors, (14841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8194 states to 8194 states and 14841 transitions. [2021-11-22 16:03:59,104 INFO L78 Accepts]: Start accepts. Automaton has 8194 states and 14841 transitions. Word has length 104 [2021-11-22 16:03:59,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:59,105 INFO L470 AbstractCegarLoop]: Abstraction has 8194 states and 14841 transitions. [2021-11-22 16:03:59,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 8194 states and 14841 transitions. [2021-11-22 16:03:59,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-22 16:03:59,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:59,108 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] [2021-11-22 16:03:59,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 16:03:59,109 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:03:59,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash 383646835, now seen corresponding path program 1 times [2021-11-22 16:03:59,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515855604] [2021-11-22 16:03:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:59,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:59,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:59,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515855604] [2021-11-22 16:03:59,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515855604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:59,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:59,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:03:59,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384226813] [2021-11-22 16:03:59,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:59,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:03:59,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:03:59,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:59,165 INFO L87 Difference]: Start difference. First operand 8194 states and 14841 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:00,030 INFO L93 Difference]: Finished difference Result 17058 states and 30767 transitions. [2021-11-22 16:04:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:04:00,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-22 16:04:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:00,046 INFO L225 Difference]: With dead ends: 17058 [2021-11-22 16:04:00,046 INFO L226 Difference]: Without dead ends: 12418 [2021-11-22 16:04:00,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:04:00,051 INFO L933 BasicCegarLoop]: 5630 mSDtfsCounter, 4522 mSDsluCounter, 13370 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4522 SdHoareTripleChecker+Valid, 19000 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:00,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4522 Valid, 19000 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:04:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12418 states. [2021-11-22 16:04:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12418 to 8211. [2021-11-22 16:04:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 8206 states have (on average 1.8101389227394589) internal successors, (14854), 8210 states have internal predecessors, (14854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 14854 transitions. [2021-11-22 16:04:00,648 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 14854 transitions. Word has length 106 [2021-11-22 16:04:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:00,648 INFO L470 AbstractCegarLoop]: Abstraction has 8211 states and 14854 transitions. [2021-11-22 16:04:00,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 14854 transitions. [2021-11-22 16:04:00,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 16:04:00,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:00,653 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] [2021-11-22 16:04:00,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 16:04:00,654 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:00,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:00,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1045545978, now seen corresponding path program 1 times [2021-11-22 16:04:00,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:00,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856419602] [2021-11-22 16:04:00,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:00,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:00,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:00,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856419602] [2021-11-22 16:04:00,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856419602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:00,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:00,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:04:00,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778319865] [2021-11-22 16:04:00,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:00,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:04:00,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:00,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:04:00,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:00,712 INFO L87 Difference]: Start difference. First operand 8211 states and 14854 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:01,594 INFO L93 Difference]: Finished difference Result 18696 states and 33983 transitions. [2021-11-22 16:04:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:04:01,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-22 16:04:01,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:01,609 INFO L225 Difference]: With dead ends: 18696 [2021-11-22 16:04:01,609 INFO L226 Difference]: Without dead ends: 11947 [2021-11-22 16:04:01,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:04:01,617 INFO L933 BasicCegarLoop]: 3743 mSDtfsCounter, 13669 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13669 SdHoareTripleChecker+Valid, 7130 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:01,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13669 Valid, 7130 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:04:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11947 states. [2021-11-22 16:04:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11947 to 8211. [2021-11-22 16:04:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 8206 states have (on average 1.800999268827687) internal successors, (14779), 8210 states have internal predecessors, (14779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 14779 transitions. [2021-11-22 16:04:02,132 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 14779 transitions. Word has length 113 [2021-11-22 16:04:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:02,133 INFO L470 AbstractCegarLoop]: Abstraction has 8211 states and 14779 transitions. [2021-11-22 16:04:02,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 14779 transitions. [2021-11-22 16:04:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 16:04:02,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:02,137 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] [2021-11-22 16:04:02,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 16:04:02,138 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:02,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:02,138 INFO L85 PathProgramCache]: Analyzing trace with hash 580697879, now seen corresponding path program 1 times [2021-11-22 16:04:02,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:02,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752881294] [2021-11-22 16:04:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:02,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:02,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:02,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752881294] [2021-11-22 16:04:02,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752881294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:02,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:02,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 16:04:02,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072557341] [2021-11-22 16:04:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:02,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:04:02,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:04:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:04:02,198 INFO L87 Difference]: Start difference. First operand 8211 states and 14779 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:02,714 INFO L93 Difference]: Finished difference Result 13223 states and 23651 transitions. [2021-11-22 16:04:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:04:02,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-22 16:04:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:02,724 INFO L225 Difference]: With dead ends: 13223 [2021-11-22 16:04:02,724 INFO L226 Difference]: Without dead ends: 8228 [2021-11-22 16:04:02,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:04:02,729 INFO L933 BasicCegarLoop]: 3871 mSDtfsCounter, 15779 mSDsluCounter, 6488 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15779 SdHoareTripleChecker+Valid, 10359 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:02,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15779 Valid, 10359 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:04:02,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2021-11-22 16:04:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 8211. [2021-11-22 16:04:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 8206 states have (on average 1.7885693395076774) internal successors, (14677), 8210 states have internal predecessors, (14677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 14677 transitions. [2021-11-22 16:04:03,175 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 14677 transitions. Word has length 113 [2021-11-22 16:04:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:03,176 INFO L470 AbstractCegarLoop]: Abstraction has 8211 states and 14677 transitions. [2021-11-22 16:04:03,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 14677 transitions. [2021-11-22 16:04:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-22 16:04:03,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:03,179 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] [2021-11-22 16:04:03,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 16:04:03,180 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:03,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash -797207176, now seen corresponding path program 1 times [2021-11-22 16:04:03,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:03,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267902458] [2021-11-22 16:04:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:03,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:03,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:03,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267902458] [2021-11-22 16:04:03,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267902458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:03,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:03,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:04:03,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849632150] [2021-11-22 16:04:03,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:03,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:04:03,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:03,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:04:03,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:03,235 INFO L87 Difference]: Start difference. First operand 8211 states and 14677 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:03,812 INFO L93 Difference]: Finished difference Result 12856 states and 22922 transitions. [2021-11-22 16:04:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:04:03,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-22 16:04:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:03,825 INFO L225 Difference]: With dead ends: 12856 [2021-11-22 16:04:03,825 INFO L226 Difference]: Without dead ends: 8236 [2021-11-22 16:04:03,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:04:03,831 INFO L933 BasicCegarLoop]: 3933 mSDtfsCounter, 13814 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13814 SdHoareTripleChecker+Valid, 7697 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:03,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13814 Valid, 7697 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:04:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8236 states. [2021-11-22 16:04:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8236 to 8211. [2021-11-22 16:04:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 8206 states have (on average 1.7867414087253228) internal successors, (14662), 8210 states have internal predecessors, (14662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 14662 transitions. [2021-11-22 16:04:04,285 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 14662 transitions. Word has length 114 [2021-11-22 16:04:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:04,285 INFO L470 AbstractCegarLoop]: Abstraction has 8211 states and 14662 transitions. [2021-11-22 16:04:04,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 14662 transitions. [2021-11-22 16:04:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-22 16:04:04,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:04,289 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] [2021-11-22 16:04:04,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 16:04:04,289 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:04,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1909412218, now seen corresponding path program 1 times [2021-11-22 16:04:04,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:04,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202234182] [2021-11-22 16:04:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:04,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:04,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202234182] [2021-11-22 16:04:04,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202234182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:04,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:04,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:04:04,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594044339] [2021-11-22 16:04:04,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:04,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:04:04,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:04,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:04:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:04:04,341 INFO L87 Difference]: Start difference. First operand 8211 states and 14662 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:04,761 INFO L93 Difference]: Finished difference Result 14832 states and 26465 transitions. [2021-11-22 16:04:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:04:04,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-22 16:04:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:04,771 INFO L225 Difference]: With dead ends: 14832 [2021-11-22 16:04:04,771 INFO L226 Difference]: Without dead ends: 8189 [2021-11-22 16:04:04,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:04:04,776 INFO L933 BasicCegarLoop]: 3891 mSDtfsCounter, 3797 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3797 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:04,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3797 Valid, 3891 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:04:04,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8189 states. [2021-11-22 16:04:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8189 to 8189. [2021-11-22 16:04:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8189 states, 8185 states have (on average 1.7861942577886378) internal successors, (14620), 8188 states have internal predecessors, (14620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:05,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8189 states to 8189 states and 14620 transitions. [2021-11-22 16:04:05,252 INFO L78 Accepts]: Start accepts. Automaton has 8189 states and 14620 transitions. Word has length 114 [2021-11-22 16:04:05,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:05,252 INFO L470 AbstractCegarLoop]: Abstraction has 8189 states and 14620 transitions. [2021-11-22 16:04:05,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand 8189 states and 14620 transitions. [2021-11-22 16:04:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-22 16:04:05,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:05,255 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] [2021-11-22 16:04:05,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 16:04:05,256 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash -433592953, now seen corresponding path program 1 times [2021-11-22 16:04:05,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:05,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434374172] [2021-11-22 16:04:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:05,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:05,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:05,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434374172] [2021-11-22 16:04:05,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434374172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:05,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:05,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:04:05,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913512093] [2021-11-22 16:04:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:05,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:04:05,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:04:05,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:05,315 INFO L87 Difference]: Start difference. First operand 8189 states and 14620 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:07,379 INFO L93 Difference]: Finished difference Result 33290 states and 58014 transitions. [2021-11-22 16:04:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:04:07,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-22 16:04:07,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:07,423 INFO L225 Difference]: With dead ends: 33290 [2021-11-22 16:04:07,424 INFO L226 Difference]: Without dead ends: 28703 [2021-11-22 16:04:07,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:04:07,433 INFO L933 BasicCegarLoop]: 8018 mSDtfsCounter, 8115 mSDsluCounter, 19909 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8115 SdHoareTripleChecker+Valid, 27927 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:07,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8115 Valid, 27927 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:04:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28703 states. [2021-11-22 16:04:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28703 to 10120. [2021-11-22 16:04:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10120 states, 10116 states have (on average 1.731810992487149) internal successors, (17519), 10119 states have internal predecessors, (17519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10120 states to 10120 states and 17519 transitions. [2021-11-22 16:04:08,335 INFO L78 Accepts]: Start accepts. Automaton has 10120 states and 17519 transitions. Word has length 116 [2021-11-22 16:04:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:08,335 INFO L470 AbstractCegarLoop]: Abstraction has 10120 states and 17519 transitions. [2021-11-22 16:04:08,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:08,335 INFO L276 IsEmpty]: Start isEmpty. Operand 10120 states and 17519 transitions. [2021-11-22 16:04:08,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-22 16:04:08,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:08,339 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] [2021-11-22 16:04:08,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 16:04:08,340 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -670317751, now seen corresponding path program 1 times [2021-11-22 16:04:08,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:08,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921197679] [2021-11-22 16:04:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:08,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:08,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:08,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921197679] [2021-11-22 16:04:08,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921197679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:08,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:08,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:04:08,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923006097] [2021-11-22 16:04:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:08,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:04:08,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:04:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:08,447 INFO L87 Difference]: Start difference. First operand 10120 states and 17519 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:09,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:09,625 INFO L93 Difference]: Finished difference Result 16666 states and 28960 transitions. [2021-11-22 16:04:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:04:09,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-22 16:04:09,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:09,648 INFO L225 Difference]: With dead ends: 16666 [2021-11-22 16:04:09,648 INFO L226 Difference]: Without dead ends: 16651 [2021-11-22 16:04:09,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:04:09,653 INFO L933 BasicCegarLoop]: 3891 mSDtfsCounter, 7925 mSDsluCounter, 7775 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7925 SdHoareTripleChecker+Valid, 11666 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:09,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7925 Valid, 11666 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:04:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16651 states. [2021-11-22 16:04:10,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16651 to 10138. [2021-11-22 16:04:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10138 states, 10134 states have (on average 1.7305111505821986) internal successors, (17537), 10137 states have internal predecessors, (17537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10138 states to 10138 states and 17537 transitions. [2021-11-22 16:04:10,512 INFO L78 Accepts]: Start accepts. Automaton has 10138 states and 17537 transitions. Word has length 116 [2021-11-22 16:04:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:10,512 INFO L470 AbstractCegarLoop]: Abstraction has 10138 states and 17537 transitions. [2021-11-22 16:04:10,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10138 states and 17537 transitions. [2021-11-22 16:04:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-22 16:04:10,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:10,516 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] [2021-11-22 16:04:10,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 16:04:10,516 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash 836515566, now seen corresponding path program 1 times [2021-11-22 16:04:10,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:10,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707611777] [2021-11-22 16:04:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:10,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:10,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:10,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707611777] [2021-11-22 16:04:10,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707611777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:10,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:10,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:04:10,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106896001] [2021-11-22 16:04:10,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:10,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:04:10,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:04:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:04:10,570 INFO L87 Difference]: Start difference. First operand 10138 states and 17537 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:11,270 INFO L93 Difference]: Finished difference Result 10159 states and 17557 transitions. [2021-11-22 16:04:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:04:11,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-22 16:04:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:11,284 INFO L225 Difference]: With dead ends: 10159 [2021-11-22 16:04:11,284 INFO L226 Difference]: Without dead ends: 10144 [2021-11-22 16:04:11,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:11,288 INFO L933 BasicCegarLoop]: 3894 mSDtfsCounter, 4148 mSDsluCounter, 3640 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4148 SdHoareTripleChecker+Valid, 7534 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:11,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4148 Valid, 7534 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:04:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10144 states. [2021-11-22 16:04:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10144 to 10138. [2021-11-22 16:04:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10138 states, 10134 states have (on average 1.7295243733964871) internal successors, (17527), 10137 states have internal predecessors, (17527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10138 states to 10138 states and 17527 transitions. [2021-11-22 16:04:12,067 INFO L78 Accepts]: Start accepts. Automaton has 10138 states and 17527 transitions. Word has length 118 [2021-11-22 16:04:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:12,068 INFO L470 AbstractCegarLoop]: Abstraction has 10138 states and 17527 transitions. [2021-11-22 16:04:12,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10138 states and 17527 transitions. [2021-11-22 16:04:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-22 16:04:12,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:12,071 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] [2021-11-22 16:04:12,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 16:04:12,071 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:12,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:12,072 INFO L85 PathProgramCache]: Analyzing trace with hash 566930122, now seen corresponding path program 1 times [2021-11-22 16:04:12,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:12,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253975626] [2021-11-22 16:04:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:12,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:12,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:12,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253975626] [2021-11-22 16:04:12,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253975626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:12,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:12,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:04:12,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452082871] [2021-11-22 16:04:12,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:12,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:04:12,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:12,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:04:12,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:12,144 INFO L87 Difference]: Start difference. First operand 10138 states and 17527 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:13,751 INFO L93 Difference]: Finished difference Result 23540 states and 40801 transitions. [2021-11-22 16:04:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:04:13,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-22 16:04:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:13,772 INFO L225 Difference]: With dead ends: 23540 [2021-11-22 16:04:13,772 INFO L226 Difference]: Without dead ends: 15263 [2021-11-22 16:04:13,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:04:13,782 INFO L933 BasicCegarLoop]: 5747 mSDtfsCounter, 9387 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9387 SdHoareTripleChecker+Valid, 9884 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:13,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9387 Valid, 9884 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:04:13,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15263 states. [2021-11-22 16:04:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15263 to 10138. [2021-11-22 16:04:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10138 states, 10134 states have (on average 1.7285375962107756) internal successors, (17517), 10137 states have internal predecessors, (17517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10138 states to 10138 states and 17517 transitions. [2021-11-22 16:04:14,718 INFO L78 Accepts]: Start accepts. Automaton has 10138 states and 17517 transitions. Word has length 125 [2021-11-22 16:04:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:14,719 INFO L470 AbstractCegarLoop]: Abstraction has 10138 states and 17517 transitions. [2021-11-22 16:04:14,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 10138 states and 17517 transitions. [2021-11-22 16:04:14,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 16:04:14,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:14,723 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] [2021-11-22 16:04:14,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 16:04:14,723 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:14,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:14,724 INFO L85 PathProgramCache]: Analyzing trace with hash 13661653, now seen corresponding path program 1 times [2021-11-22 16:04:14,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:14,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753813259] [2021-11-22 16:04:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:14,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:14,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:14,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753813259] [2021-11-22 16:04:14,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753813259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:14,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:14,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 16:04:14,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845548882] [2021-11-22 16:04:14,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:14,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:04:14,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:14,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:04:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:04:14,854 INFO L87 Difference]: Start difference. First operand 10138 states and 17517 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:18,888 INFO L93 Difference]: Finished difference Result 33424 states and 57649 transitions. [2021-11-22 16:04:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 16:04:18,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-22 16:04:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:18,925 INFO L225 Difference]: With dead ends: 33424 [2021-11-22 16:04:18,926 INFO L226 Difference]: Without dead ends: 27315 [2021-11-22 16:04:18,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-11-22 16:04:18,934 INFO L933 BasicCegarLoop]: 5624 mSDtfsCounter, 25336 mSDsluCounter, 19709 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25336 SdHoareTripleChecker+Valid, 25333 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:18,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25336 Valid, 25333 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 16:04:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27315 states. [2021-11-22 16:04:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27315 to 12976. [2021-11-22 16:04:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12976 states, 12972 states have (on average 1.732963305581252) internal successors, (22480), 12975 states have internal predecessors, (22480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12976 states to 12976 states and 22480 transitions. [2021-11-22 16:04:20,016 INFO L78 Accepts]: Start accepts. Automaton has 12976 states and 22480 transitions. Word has length 130 [2021-11-22 16:04:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:20,017 INFO L470 AbstractCegarLoop]: Abstraction has 12976 states and 22480 transitions. [2021-11-22 16:04:20,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 12976 states and 22480 transitions. [2021-11-22 16:04:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 16:04:20,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:20,021 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] [2021-11-22 16:04:20,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 16:04:20,021 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2137032209, now seen corresponding path program 1 times [2021-11-22 16:04:20,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:20,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685350649] [2021-11-22 16:04:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:20,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:20,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:20,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685350649] [2021-11-22 16:04:20,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685350649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:20,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:20,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:04:20,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244501819] [2021-11-22 16:04:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:20,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:04:20,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:20,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:04:20,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:04:20,112 INFO L87 Difference]: Start difference. First operand 12976 states and 22480 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:21,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:21,859 INFO L93 Difference]: Finished difference Result 20840 states and 36373 transitions. [2021-11-22 16:04:21,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:04:21,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-22 16:04:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:21,887 INFO L225 Difference]: With dead ends: 20840 [2021-11-22 16:04:21,888 INFO L226 Difference]: Without dead ends: 20825 [2021-11-22 16:04:21,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:04:21,893 INFO L933 BasicCegarLoop]: 3957 mSDtfsCounter, 19850 mSDsluCounter, 9778 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19850 SdHoareTripleChecker+Valid, 13735 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:21,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19850 Valid, 13735 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:04:21,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20825 states. [2021-11-22 16:04:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20825 to 12997. [2021-11-22 16:04:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12997 states, 12993 states have (on average 1.7312398984068345) internal successors, (22494), 12996 states have internal predecessors, (22494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12997 states to 12997 states and 22494 transitions. [2021-11-22 16:04:23,010 INFO L78 Accepts]: Start accepts. Automaton has 12997 states and 22494 transitions. Word has length 130 [2021-11-22 16:04:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:23,010 INFO L470 AbstractCegarLoop]: Abstraction has 12997 states and 22494 transitions. [2021-11-22 16:04:23,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 12997 states and 22494 transitions. [2021-11-22 16:04:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 16:04:23,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:23,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:04:23,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 16:04:23,015 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash 213230597, now seen corresponding path program 1 times [2021-11-22 16:04:23,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:23,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335920028] [2021-11-22 16:04:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:23,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:23,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:23,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335920028] [2021-11-22 16:04:23,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335920028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:23,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:23,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:04:23,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059094230] [2021-11-22 16:04:23,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:23,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:04:23,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:23,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:04:23,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:23,079 INFO L87 Difference]: Start difference. First operand 12997 states and 22494 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:28,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:28,347 INFO L93 Difference]: Finished difference Result 67799 states and 120179 transitions. [2021-11-22 16:04:28,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:04:28,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-22 16:04:28,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:28,432 INFO L225 Difference]: With dead ends: 67799 [2021-11-22 16:04:28,432 INFO L226 Difference]: Without dead ends: 56601 [2021-11-22 16:04:28,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:04:28,447 INFO L933 BasicCegarLoop]: 4131 mSDtfsCounter, 20353 mSDsluCounter, 10970 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20353 SdHoareTripleChecker+Valid, 15101 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:28,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20353 Valid, 15101 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:04:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56601 states. [2021-11-22 16:04:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56601 to 25322. [2021-11-22 16:04:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25322 states, 25318 states have (on average 1.7363140848408247) internal successors, (43960), 25321 states have internal predecessors, (43960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25322 states to 25322 states and 43960 transitions. [2021-11-22 16:04:30,904 INFO L78 Accepts]: Start accepts. Automaton has 25322 states and 43960 transitions. Word has length 149 [2021-11-22 16:04:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:30,904 INFO L470 AbstractCegarLoop]: Abstraction has 25322 states and 43960 transitions. [2021-11-22 16:04:30,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 25322 states and 43960 transitions. [2021-11-22 16:04:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-22 16:04:30,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:30,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:04:30,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-22 16:04:30,910 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:30,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:30,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1480485317, now seen corresponding path program 1 times [2021-11-22 16:04:30,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:30,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717500548] [2021-11-22 16:04:30,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:30,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:30,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:30,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717500548] [2021-11-22 16:04:30,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717500548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:30,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:30,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:04:30,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610666585] [2021-11-22 16:04:30,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:30,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:04:30,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:04:30,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:04:30,973 INFO L87 Difference]: Start difference. First operand 25322 states and 43960 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:34,504 INFO L93 Difference]: Finished difference Result 60825 states and 105912 transitions. [2021-11-22 16:04:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:04:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-22 16:04:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:34,557 INFO L225 Difference]: With dead ends: 60825 [2021-11-22 16:04:34,557 INFO L226 Difference]: Without dead ends: 38110 [2021-11-22 16:04:34,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:04:34,574 INFO L933 BasicCegarLoop]: 4087 mSDtfsCounter, 1891 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 7627 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:34,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1891 Valid, 7627 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:04:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38110 states. [2021-11-22 16:04:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38110 to 24746. [2021-11-22 16:04:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24746 states, 24742 states have (on average 1.7289224799935332) internal successors, (42777), 24745 states have internal predecessors, (42777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24746 states to 24746 states and 42777 transitions. [2021-11-22 16:04:37,013 INFO L78 Accepts]: Start accepts. Automaton has 24746 states and 42777 transitions. Word has length 150 [2021-11-22 16:04:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:37,013 INFO L470 AbstractCegarLoop]: Abstraction has 24746 states and 42777 transitions. [2021-11-22 16:04:37,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 24746 states and 42777 transitions. [2021-11-22 16:04:37,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-22 16:04:37,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:37,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:04:37,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-22 16:04:37,020 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:37,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1072656996, now seen corresponding path program 1 times [2021-11-22 16:04:37,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:37,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061990763] [2021-11-22 16:04:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:37,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:37,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:37,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061990763] [2021-11-22 16:04:37,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061990763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:37,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:37,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:04:37,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689221404] [2021-11-22 16:04:37,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:37,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:04:37,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:04:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:37,076 INFO L87 Difference]: Start difference. First operand 24746 states and 42777 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:41,411 INFO L93 Difference]: Finished difference Result 58681 states and 99152 transitions. [2021-11-22 16:04:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:04:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-22 16:04:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:41,457 INFO L225 Difference]: With dead ends: 58681 [2021-11-22 16:04:41,457 INFO L226 Difference]: Without dead ends: 34364 [2021-11-22 16:04:41,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:04:41,470 INFO L933 BasicCegarLoop]: 4361 mSDtfsCounter, 2580 mSDsluCounter, 10984 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 15345 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:41,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2580 Valid, 15345 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:04:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34364 states. [2021-11-22 16:04:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34364 to 24833. [2021-11-22 16:04:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24833 states, 24829 states have (on average 1.7263683595795238) internal successors, (42864), 24832 states have internal predecessors, (42864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24833 states to 24833 states and 42864 transitions. [2021-11-22 16:04:43,963 INFO L78 Accepts]: Start accepts. Automaton has 24833 states and 42864 transitions. Word has length 163 [2021-11-22 16:04:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:43,964 INFO L470 AbstractCegarLoop]: Abstraction has 24833 states and 42864 transitions. [2021-11-22 16:04:43,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 24833 states and 42864 transitions. [2021-11-22 16:04:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-22 16:04:43,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:43,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:04:43,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-22 16:04:43,969 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1065194196, now seen corresponding path program 1 times [2021-11-22 16:04:43,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:43,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657469937] [2021-11-22 16:04:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:43,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:44,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:44,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657469937] [2021-11-22 16:04:44,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657469937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:44,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:44,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:04:44,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828062657] [2021-11-22 16:04:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:44,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:04:44,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:04:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:04:44,037 INFO L87 Difference]: Start difference. First operand 24833 states and 42864 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:47,779 INFO L93 Difference]: Finished difference Result 59313 states and 101974 transitions. [2021-11-22 16:04:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:04:47,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-22 16:04:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:47,841 INFO L225 Difference]: With dead ends: 59313 [2021-11-22 16:04:47,841 INFO L226 Difference]: Without dead ends: 34553 [2021-11-22 16:04:47,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:04:47,857 INFO L933 BasicCegarLoop]: 2392 mSDtfsCounter, 2695 mSDsluCounter, 4134 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 6526 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:47,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2695 Valid, 6526 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:04:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34553 states. [2021-11-22 16:04:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34553 to 17513. [2021-11-22 16:04:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17513 states, 17509 states have (on average 1.7111199954309213) internal successors, (29960), 17512 states have internal predecessors, (29960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17513 states to 17513 states and 29960 transitions. [2021-11-22 16:04:49,915 INFO L78 Accepts]: Start accepts. Automaton has 17513 states and 29960 transitions. Word has length 164 [2021-11-22 16:04:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:49,915 INFO L470 AbstractCegarLoop]: Abstraction has 17513 states and 29960 transitions. [2021-11-22 16:04:49,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 17513 states and 29960 transitions. [2021-11-22 16:04:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-22 16:04:49,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:49,923 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:04:49,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-22 16:04:49,924 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash -511039565, now seen corresponding path program 1 times [2021-11-22 16:04:49,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:49,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569483718] [2021-11-22 16:04:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:49,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:50,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:50,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569483718] [2021-11-22 16:04:50,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569483718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:50,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:50,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:04:50,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719073066] [2021-11-22 16:04:50,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:50,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:04:50,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:04:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:04:50,004 INFO L87 Difference]: Start difference. First operand 17513 states and 29960 transitions. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:53,191 INFO L93 Difference]: Finished difference Result 37447 states and 63702 transitions. [2021-11-22 16:04:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:04:53,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2021-11-22 16:04:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:53,220 INFO L225 Difference]: With dead ends: 37447 [2021-11-22 16:04:53,221 INFO L226 Difference]: Without dead ends: 23920 [2021-11-22 16:04:53,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:04:53,232 INFO L933 BasicCegarLoop]: 2315 mSDtfsCounter, 2231 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 6308 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:53,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2231 Valid, 6308 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:04:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23920 states. [2021-11-22 16:04:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23920 to 23817. [2021-11-22 16:04:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23817 states, 23813 states have (on average 1.694788560870113) internal successors, (40358), 23816 states have internal predecessors, (40358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23817 states to 23817 states and 40358 transitions. [2021-11-22 16:04:55,879 INFO L78 Accepts]: Start accepts. Automaton has 23817 states and 40358 transitions. Word has length 183 [2021-11-22 16:04:55,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:04:55,879 INFO L470 AbstractCegarLoop]: Abstraction has 23817 states and 40358 transitions. [2021-11-22 16:04:55,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 23817 states and 40358 transitions. [2021-11-22 16:04:55,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-22 16:04:55,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:04:55,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:04:55,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-22 16:04:55,884 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:04:55,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:04:55,885 INFO L85 PathProgramCache]: Analyzing trace with hash -120897817, now seen corresponding path program 1 times [2021-11-22 16:04:55,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:04:55,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341115924] [2021-11-22 16:04:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:04:55,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:04:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:04:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:04:55,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:04:55,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341115924] [2021-11-22 16:04:55,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341115924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:04:55,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:04:55,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:04:55,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787151300] [2021-11-22 16:04:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:04:55,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:04:55,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:04:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:04:55,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:04:55,951 INFO L87 Difference]: Start difference. First operand 23817 states and 40358 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:04:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:04:59,709 INFO L93 Difference]: Finished difference Result 49871 states and 83930 transitions. [2021-11-22 16:04:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:04:59,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2021-11-22 16:04:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:04:59,755 INFO L225 Difference]: With dead ends: 49871 [2021-11-22 16:04:59,755 INFO L226 Difference]: Without dead ends: 30056 [2021-11-22 16:04:59,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:04:59,771 INFO L933 BasicCegarLoop]: 4001 mSDtfsCounter, 1904 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 6090 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:04:59,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1904 Valid, 6090 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:04:59,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30056 states. [2021-11-22 16:05:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30056 to 29977. [2021-11-22 16:05:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29977 states, 29973 states have (on average 1.680579187935809) internal successors, (50372), 29976 states have internal predecessors, (50372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:05:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29977 states to 29977 states and 50372 transitions. [2021-11-22 16:05:03,572 INFO L78 Accepts]: Start accepts. Automaton has 29977 states and 50372 transitions. Word has length 186 [2021-11-22 16:05:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:05:03,573 INFO L470 AbstractCegarLoop]: Abstraction has 29977 states and 50372 transitions. [2021-11-22 16:05:03,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:05:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 29977 states and 50372 transitions. [2021-11-22 16:05:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 16:05:03,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:05:03,579 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:05:03,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-22 16:05:03,579 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:05:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:05:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash 746171109, now seen corresponding path program 1 times [2021-11-22 16:05:03,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:05:03,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54801549] [2021-11-22 16:05:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:05:03,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:05:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:05:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:05:03,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:05:03,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54801549] [2021-11-22 16:05:03,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54801549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:05:03,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:05:03,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:05:03,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944112228] [2021-11-22 16:05:03,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:05:03,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:05:03,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:05:03,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:05:03,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:05:03,648 INFO L87 Difference]: Start difference. First operand 29977 states and 50372 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:05:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:05:09,605 INFO L93 Difference]: Finished difference Result 79012 states and 135357 transitions. [2021-11-22 16:05:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:05:09,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-22 16:05:09,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:05:09,703 INFO L225 Difference]: With dead ends: 79012 [2021-11-22 16:05:09,703 INFO L226 Difference]: Without dead ends: 49174 [2021-11-22 16:05:09,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:05:09,727 INFO L933 BasicCegarLoop]: 3690 mSDtfsCounter, 4697 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4697 SdHoareTripleChecker+Valid, 5587 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:05:09,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4697 Valid, 5587 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:05:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49174 states. [2021-11-22 16:05:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49174 to 29977. [2021-11-22 16:05:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29977 states, 29973 states have (on average 1.6706369065492277) internal successors, (50074), 29976 states have internal predecessors, (50074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:05:13,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29977 states to 29977 states and 50074 transitions. [2021-11-22 16:05:13,744 INFO L78 Accepts]: Start accepts. Automaton has 29977 states and 50074 transitions. Word has length 188 [2021-11-22 16:05:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:05:13,744 INFO L470 AbstractCegarLoop]: Abstraction has 29977 states and 50074 transitions. [2021-11-22 16:05:13,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:05:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 29977 states and 50074 transitions. [2021-11-22 16:05:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 16:05:13,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:05:13,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:05:13,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-22 16:05:13,751 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 16:05:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:05:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash -187547689, now seen corresponding path program 1 times [2021-11-22 16:05:13,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:05:13,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755077529] [2021-11-22 16:05:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:05:13,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:05:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:05:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:05:13,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:05:13,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755077529] [2021-11-22 16:05:13,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755077529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:05:13,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:05:13,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:05:13,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844191976] [2021-11-22 16:05:13,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:05:13,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:05:13,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:05:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:05:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:05:13,823 INFO L87 Difference]: Start difference. First operand 29977 states and 50074 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:05:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:05:19,115 INFO L93 Difference]: Finished difference Result 64663 states and 108174 transitions. [2021-11-22 16:05:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:05:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-22 16:05:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:05:19,167 INFO L225 Difference]: With dead ends: 64663 [2021-11-22 16:05:19,167 INFO L226 Difference]: Without dead ends: 38688 [2021-11-22 16:05:19,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:05:19,182 INFO L933 BasicCegarLoop]: 2348 mSDtfsCounter, 2231 mSDsluCounter, 3840 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:05:19,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2231 Valid, 6188 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 16:05:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38688 states.