./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G --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 a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:42:42,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:42:42,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:42:42,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:42:42,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:42:42,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:42:42,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:42:42,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:42:42,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:42:42,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:42:42,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:42:42,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:42:42,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:42:42,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:42:42,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:42:42,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:42:42,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:42:42,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:42:42,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:42:42,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:42:42,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:42:42,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:42:42,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:42:42,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:42:42,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:42:42,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:42:42,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:42:42,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:42:42,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:42:42,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:42:42,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:42:42,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:42:42,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:42:42,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:42:42,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:42:42,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:42:42,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:42:42,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:42:42,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:42:42,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:42:42,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:42:42,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:42:42,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:42:42,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:42:42,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:42:42,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:42:42,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:42:42,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:42:42,884 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:42:42,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:42:42,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:42:42,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:42:42,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:42:42,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:42:42,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:42:42,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:42:42,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:42:42,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:42:42,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:42:42,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:42:42,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:42:42,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:42:42,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:42:42,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:42:42,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:42:42,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:42:42,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:42:42,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:42:42,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:42:42,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:42:42,888 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:42:42,888 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:42:42,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:42:42,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:42:42,889 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_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2021-11-23 12:42:43,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:42:43,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:42:43,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:42:43,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:42:43,176 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:42:43,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-23 12:42:43,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/data/14824c042/055d08203d5b42248187c2b3a14ecbe1/FLAGeebe82a17 [2021-11-23 12:42:43,853 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:42:43,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-23 12:42:43,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/data/14824c042/055d08203d5b42248187c2b3a14ecbe1/FLAGeebe82a17 [2021-11-23 12:42:44,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/data/14824c042/055d08203d5b42248187c2b3a14ecbe1 [2021-11-23 12:42:44,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:42:44,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:42:44,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:42:44,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:42:44,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:42:44,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:44,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e36bc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44, skipping insertion in model container [2021-11-23 12:42:44,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:44,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:42:44,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:42:44,353 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_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-23 12:42:44,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:42:44,597 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:42:44,627 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_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-23 12:42:44,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:42:44,811 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:42:44,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44 WrapperNode [2021-11-23 12:42:44,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:42:44,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:42:44,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:42:44,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:42:44,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:44,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,107 INFO L137 Inliner]: procedures = 93, calls = 341, calls flagged for inlining = 194, calls inlined = 410, statements flattened = 13863 [2021-11-23 12:42:45,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:42:45,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:42:45,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:42:45,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:42:45,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:42:45,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:42:45,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:42:45,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:42:45,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (1/1) ... [2021-11-23 12:42:45,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:42:45,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:42:45,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:42:45,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c964d8-27f3-46f7-a65e-f2eea7f17bc7/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:42:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:42:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:42:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:42:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:42:45,696 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:42:45,697 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:42:51,028 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:42:51,086 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:42:51,087 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:42:51,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:42:51 BoogieIcfgContainer [2021-11-23 12:42:51,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:42:51,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:42:51,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:42:51,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:42:51,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:42:44" (1/3) ... [2021-11-23 12:42:51,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b627804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:42:51, skipping insertion in model container [2021-11-23 12:42:51,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:42:44" (2/3) ... [2021-11-23 12:42:51,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b627804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:42:51, skipping insertion in model container [2021-11-23 12:42:51,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:42:51" (3/3) ... [2021-11-23 12:42:51,108 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2021-11-23 12:42:51,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:42:51,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 12:42:51,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:42:51,194 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 [2021-11-23 12:42:51,195 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 12:42:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 3638 states, 3632 states have (on average 1.8741740088105727) internal successors, (6807), 3637 states have internal predecessors, (6807), 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) [2021-11-23 12:42:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 12:42:51,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:51,319 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] [2021-11-23 12:42:51,320 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)] === [2021-11-23 12:42:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1410869345, now seen corresponding path program 1 times [2021-11-23 12:42:51,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233295803] [2021-11-23 12:42:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:51,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:51,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:51,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233295803] [2021-11-23 12:42:51,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233295803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:51,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:51,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:42:51,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65477499] [2021-11-23 12:42:51,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:51,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:42:51,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:42:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:42:51,809 INFO L87 Difference]: Start difference. First operand has 3638 states, 3632 states have (on average 1.8741740088105727) internal successors, (6807), 3637 states have internal predecessors, (6807), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-23 12:42:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:52,242 INFO L93 Difference]: Finished difference Result 7261 states and 13591 transitions. [2021-11-23 12:42:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:42:52,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-23 12:42:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:52,288 INFO L225 Difference]: With dead ends: 7261 [2021-11-23 12:42:52,289 INFO L226 Difference]: Without dead ends: 3627 [2021-11-23 12:42:52,303 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 [2021-11-23 12:42:52,307 INFO L933 BasicCegarLoop]: 6786 mSDtfsCounter, 6780 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6780 SdHoareTripleChecker+Valid, 6797 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:52,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6780 Valid, 6797 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2021-11-23 12:42:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3627. [2021-11-23 12:42:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3622 states have (on average 1.8724461623412478) internal successors, (6782), 3626 states have internal predecessors, (6782), 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) [2021-11-23 12:42:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 6782 transitions. [2021-11-23 12:42:52,517 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 6782 transitions. Word has length 50 [2021-11-23 12:42:52,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:52,518 INFO L470 AbstractCegarLoop]: Abstraction has 3627 states and 6782 transitions. [2021-11-23 12:42:52,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-23 12:42:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 6782 transitions. [2021-11-23 12:42:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:42:52,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:52,524 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] [2021-11-23 12:42:52,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:42:52,525 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)] === [2021-11-23 12:42:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash -643280767, now seen corresponding path program 1 times [2021-11-23 12:42:52,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:52,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223069343] [2021-11-23 12:42:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:52,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:52,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:52,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223069343] [2021-11-23 12:42:52,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223069343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:52,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:52,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:42:52,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885819875] [2021-11-23 12:42:52,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:52,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:42:52,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:42:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:42:52,667 INFO L87 Difference]: Start difference. First operand 3627 states and 6782 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-11-23 12:42:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:53,124 INFO L93 Difference]: Finished difference Result 7204 states and 13479 transitions. [2021-11-23 12:42:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:42:53,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 57 [2021-11-23 12:42:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:53,151 INFO L225 Difference]: With dead ends: 7204 [2021-11-23 12:42:53,151 INFO L226 Difference]: Without dead ends: 3621 [2021-11-23 12:42:53,162 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 [2021-11-23 12:42:53,164 INFO L933 BasicCegarLoop]: 6756 mSDtfsCounter, 27038 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27038 SdHoareTripleChecker+Valid, 6784 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:53,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27038 Valid, 6784 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2021-11-23 12:42:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3621. [2021-11-23 12:42:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3616 states have (on average 1.8719579646017699) internal successors, (6769), 3620 states have internal predecessors, (6769), 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) [2021-11-23 12:42:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6769 transitions. [2021-11-23 12:42:53,330 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6769 transitions. Word has length 57 [2021-11-23 12:42:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:53,332 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 6769 transitions. [2021-11-23 12:42:53,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-11-23 12:42:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6769 transitions. [2021-11-23 12:42:53,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 12:42:53,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:53,339 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] [2021-11-23 12:42:53,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:42:53,342 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)] === [2021-11-23 12:42:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1737743460, now seen corresponding path program 1 times [2021-11-23 12:42:53,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:53,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586834271] [2021-11-23 12:42:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:53,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:53,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:53,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586834271] [2021-11-23 12:42:53,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586834271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:53,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:53,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:42:53,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694273366] [2021-11-23 12:42:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:53,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:42:53,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:42:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:42:53,415 INFO L87 Difference]: Start difference. First operand 3621 states and 6769 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-23 12:42:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:53,699 INFO L93 Difference]: Finished difference Result 7198 states and 13466 transitions. [2021-11-23 12:42:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:42:53,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2021-11-23 12:42:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:53,724 INFO L225 Difference]: With dead ends: 7198 [2021-11-23 12:42:53,725 INFO L226 Difference]: Without dead ends: 3621 [2021-11-23 12:42:53,731 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 [2021-11-23 12:42:53,733 INFO L933 BasicCegarLoop]: 6715 mSDtfsCounter, 13505 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13505 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:53,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13505 Valid, 6730 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:42:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2021-11-23 12:42:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3621. [2021-11-23 12:42:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3616 states have (on average 1.8708517699115044) internal successors, (6765), 3620 states have internal predecessors, (6765), 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) [2021-11-23 12:42:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6765 transitions. [2021-11-23 12:42:53,897 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6765 transitions. Word has length 58 [2021-11-23 12:42:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:53,898 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 6765 transitions. [2021-11-23 12:42:53,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-23 12:42:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6765 transitions. [2021-11-23 12:42:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 12:42:53,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:53,903 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] [2021-11-23 12:42:53,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:42:53,904 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)] === [2021-11-23 12:42:53,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:53,904 INFO L85 PathProgramCache]: Analyzing trace with hash -477499836, now seen corresponding path program 1 times [2021-11-23 12:42:53,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:53,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980977645] [2021-11-23 12:42:53,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:53,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:54,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:54,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980977645] [2021-11-23 12:42:54,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980977645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:54,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:54,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:42:54,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340839719] [2021-11-23 12:42:54,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:54,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:42:54,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:54,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:42:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:42:54,042 INFO L87 Difference]: Start difference. First operand 3621 states and 6765 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-23 12:42:54,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:54,329 INFO L93 Difference]: Finished difference Result 7198 states and 13462 transitions. [2021-11-23 12:42:54,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:42:54,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-23 12:42:54,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:54,355 INFO L225 Difference]: With dead ends: 7198 [2021-11-23 12:42:54,356 INFO L226 Difference]: Without dead ends: 3621 [2021-11-23 12:42:54,362 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 [2021-11-23 12:42:54,374 INFO L933 BasicCegarLoop]: 6715 mSDtfsCounter, 13495 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13495 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:54,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13495 Valid, 6730 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2021-11-23 12:42:54,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3621. [2021-11-23 12:42:54,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3616 states have (on average 1.8697455752212389) internal successors, (6761), 3620 states have internal predecessors, (6761), 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) [2021-11-23 12:42:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6761 transitions. [2021-11-23 12:42:54,579 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6761 transitions. Word has length 59 [2021-11-23 12:42:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:54,581 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 6761 transitions. [2021-11-23 12:42:54,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-23 12:42:54,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6761 transitions. [2021-11-23 12:42:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 12:42:54,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:54,589 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] [2021-11-23 12:42:54,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:42:54,590 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)] === [2021-11-23 12:42:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1518932119, now seen corresponding path program 1 times [2021-11-23 12:42:54,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:54,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044033509] [2021-11-23 12:42:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:54,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:54,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:54,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044033509] [2021-11-23 12:42:54,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044033509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:54,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:54,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:42:54,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537543213] [2021-11-23 12:42:54,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:54,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:42:54,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:42:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:42:54,677 INFO L87 Difference]: Start difference. First operand 3621 states and 6761 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-23 12:42:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:54,957 INFO L93 Difference]: Finished difference Result 7198 states and 13458 transitions. [2021-11-23 12:42:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:42:54,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2021-11-23 12:42:54,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:54,983 INFO L225 Difference]: With dead ends: 7198 [2021-11-23 12:42:54,984 INFO L226 Difference]: Without dead ends: 3621 [2021-11-23 12:42:54,990 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 [2021-11-23 12:42:54,991 INFO L933 BasicCegarLoop]: 6715 mSDtfsCounter, 13485 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13485 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:54,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13485 Valid, 6730 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:55,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2021-11-23 12:42:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3621. [2021-11-23 12:42:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3616 states have (on average 1.8686393805309736) internal successors, (6757), 3620 states have internal predecessors, (6757), 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) [2021-11-23 12:42:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6757 transitions. [2021-11-23 12:42:55,169 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6757 transitions. Word has length 60 [2021-11-23 12:42:55,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:55,170 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 6757 transitions. [2021-11-23 12:42:55,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-23 12:42:55,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6757 transitions. [2021-11-23 12:42:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 12:42:55,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:55,175 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] [2021-11-23 12:42:55,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:42:55,175 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)] === [2021-11-23 12:42:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash 619736041, now seen corresponding path program 1 times [2021-11-23 12:42:55,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:55,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967683152] [2021-11-23 12:42:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:55,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:55,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:55,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967683152] [2021-11-23 12:42:55,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967683152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:55,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:55,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:42:55,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486492580] [2021-11-23 12:42:55,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:55,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:42:55,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:55,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:42:55,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:42:55,234 INFO L87 Difference]: Start difference. First operand 3621 states and 6757 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-23 12:42:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:55,486 INFO L93 Difference]: Finished difference Result 7198 states and 13454 transitions. [2021-11-23 12:42:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:42:55,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2021-11-23 12:42:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:55,565 INFO L225 Difference]: With dead ends: 7198 [2021-11-23 12:42:55,572 INFO L226 Difference]: Without dead ends: 3600 [2021-11-23 12:42:55,577 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 [2021-11-23 12:42:55,578 INFO L933 BasicCegarLoop]: 6719 mSDtfsCounter, 13416 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13416 SdHoareTripleChecker+Valid, 6745 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:55,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13416 Valid, 6745 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2021-11-23 12:42:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3600. [2021-11-23 12:42:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3595 states have (on average 1.8700973574408901) internal successors, (6723), 3599 states have internal predecessors, (6723), 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) [2021-11-23 12:42:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 6723 transitions. [2021-11-23 12:42:55,737 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 6723 transitions. Word has length 60 [2021-11-23 12:42:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:55,737 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 6723 transitions. [2021-11-23 12:42:55,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-23 12:42:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 6723 transitions. [2021-11-23 12:42:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:42:55,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:55,744 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] [2021-11-23 12:42:55,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:42:55,745 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)] === [2021-11-23 12:42:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash -531961367, now seen corresponding path program 1 times [2021-11-23 12:42:55,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:55,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407905476] [2021-11-23 12:42:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:55,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:55,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:55,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407905476] [2021-11-23 12:42:55,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407905476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:55,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:55,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:42:55,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577463332] [2021-11-23 12:42:55,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:55,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:42:55,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:55,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:42:55,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:42:55,825 INFO L87 Difference]: Start difference. First operand 3600 states and 6723 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-23 12:42:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:56,026 INFO L93 Difference]: Finished difference Result 7177 states and 13420 transitions. [2021-11-23 12:42:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:42:56,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-11-23 12:42:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:56,037 INFO L225 Difference]: With dead ends: 7177 [2021-11-23 12:42:56,037 INFO L226 Difference]: Without dead ends: 3600 [2021-11-23 12:42:56,044 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 [2021-11-23 12:42:56,044 INFO L933 BasicCegarLoop]: 6708 mSDtfsCounter, 13413 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13413 SdHoareTripleChecker+Valid, 6723 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:56,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13413 Valid, 6723 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2021-11-23 12:42:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3600. [2021-11-23 12:42:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3595 states have (on average 1.869819193324061) internal successors, (6722), 3599 states have internal predecessors, (6722), 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) [2021-11-23 12:42:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 6722 transitions. [2021-11-23 12:42:56,198 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 6722 transitions. Word has length 61 [2021-11-23 12:42:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:56,198 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 6722 transitions. [2021-11-23 12:42:56,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-23 12:42:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 6722 transitions. [2021-11-23 12:42:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 12:42:56,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:56,203 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] [2021-11-23 12:42:56,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:42:56,204 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)] === [2021-11-23 12:42:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:56,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1089005970, now seen corresponding path program 1 times [2021-11-23 12:42:56,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:56,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16402077] [2021-11-23 12:42:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:56,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:56,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:56,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16402077] [2021-11-23 12:42:56,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16402077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:56,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:56,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:42:56,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452542108] [2021-11-23 12:42:56,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:56,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:42:56,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:56,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:42:56,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:42:56,255 INFO L87 Difference]: Start difference. First operand 3600 states and 6722 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-23 12:42:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:56,451 INFO L93 Difference]: Finished difference Result 7177 states and 13419 transitions. [2021-11-23 12:42:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:42:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-11-23 12:42:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:56,463 INFO L225 Difference]: With dead ends: 7177 [2021-11-23 12:42:56,463 INFO L226 Difference]: Without dead ends: 3600 [2021-11-23 12:42:56,469 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 [2021-11-23 12:42:56,470 INFO L933 BasicCegarLoop]: 6708 mSDtfsCounter, 13409 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13409 SdHoareTripleChecker+Valid, 6723 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:56,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13409 Valid, 6723 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2021-11-23 12:42:56,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3600. [2021-11-23 12:42:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3595 states have (on average 1.8695410292072323) internal successors, (6721), 3599 states have internal predecessors, (6721), 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) [2021-11-23 12:42:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 6721 transitions. [2021-11-23 12:42:56,631 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 6721 transitions. Word has length 62 [2021-11-23 12:42:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:56,632 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 6721 transitions. [2021-11-23 12:42:56,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-23 12:42:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 6721 transitions. [2021-11-23 12:42:56,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 12:42:56,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:56,637 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] [2021-11-23 12:42:56,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:42:56,637 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)] === [2021-11-23 12:42:56,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:56,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2029080974, now seen corresponding path program 1 times [2021-11-23 12:42:56,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:56,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923936171] [2021-11-23 12:42:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:56,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:56,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:56,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923936171] [2021-11-23 12:42:56,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923936171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:56,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:56,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:42:56,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718910442] [2021-11-23 12:42:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:56,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:42:56,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:42:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:42:56,741 INFO L87 Difference]: Start difference. First operand 3600 states and 6721 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-23 12:42:57,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:57,085 INFO L93 Difference]: Finished difference Result 7171 states and 13407 transitions. [2021-11-23 12:42:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:42:57,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 63 [2021-11-23 12:42:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:57,095 INFO L225 Difference]: With dead ends: 7171 [2021-11-23 12:42:57,095 INFO L226 Difference]: Without dead ends: 3600 [2021-11-23 12:42:57,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:42:57,103 INFO L933 BasicCegarLoop]: 6705 mSDtfsCounter, 33529 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33529 SdHoareTripleChecker+Valid, 6752 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:57,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33529 Valid, 6752 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2021-11-23 12:42:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3600. [2021-11-23 12:42:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3595 states have (on average 1.8692628650904033) internal successors, (6720), 3599 states have internal predecessors, (6720), 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) [2021-11-23 12:42:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 6720 transitions. [2021-11-23 12:42:57,266 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 6720 transitions. Word has length 63 [2021-11-23 12:42:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:57,266 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 6720 transitions. [2021-11-23 12:42:57,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-23 12:42:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 6720 transitions. [2021-11-23 12:42:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 12:42:57,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:57,271 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] [2021-11-23 12:42:57,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:42:57,271 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)] === [2021-11-23 12:42:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1205736893, now seen corresponding path program 1 times [2021-11-23 12:42:57,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:57,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055419010] [2021-11-23 12:42:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:57,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:57,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:57,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055419010] [2021-11-23 12:42:57,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055419010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:57,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:57,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:42:57,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472289620] [2021-11-23 12:42:57,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:57,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:42:57,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:57,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:42:57,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:42:57,352 INFO L87 Difference]: Start difference. First operand 3600 states and 6720 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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) [2021-11-23 12:42:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:57,557 INFO L93 Difference]: Finished difference Result 6374 states and 11880 transitions. [2021-11-23 12:42:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:42:57,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 [2021-11-23 12:42:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:57,567 INFO L225 Difference]: With dead ends: 6374 [2021-11-23 12:42:57,568 INFO L226 Difference]: Without dead ends: 3740 [2021-11-23 12:42:57,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:42:57,573 INFO L933 BasicCegarLoop]: 6933 mSDtfsCounter, 3677 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3677 SdHoareTripleChecker+Valid, 10149 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:57,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3677 Valid, 10149 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:42:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2021-11-23 12:42:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3723. [2021-11-23 12:42:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 3718 states have (on average 1.8636363636363635) internal successors, (6929), 3722 states have internal predecessors, (6929), 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) [2021-11-23 12:42:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 6929 transitions. [2021-11-23 12:42:57,727 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 6929 transitions. Word has length 64 [2021-11-23 12:42:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:57,727 INFO L470 AbstractCegarLoop]: Abstraction has 3723 states and 6929 transitions. [2021-11-23 12:42:57,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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) [2021-11-23 12:42:57,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 6929 transitions. [2021-11-23 12:42:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 12:42:57,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:57,732 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] [2021-11-23 12:42:57,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:42:57,733 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)] === [2021-11-23 12:42:57,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:57,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1703027009, now seen corresponding path program 1 times [2021-11-23 12:42:57,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:57,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478914568] [2021-11-23 12:42:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:57,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:57,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:57,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478914568] [2021-11-23 12:42:57,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478914568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:57,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:57,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:42:57,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144700043] [2021-11-23 12:42:57,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:57,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:42:57,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:57,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:42:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:42:57,809 INFO L87 Difference]: Start difference. First operand 3723 states and 6929 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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) [2021-11-23 12:42:58,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:58,233 INFO L93 Difference]: Finished difference Result 8928 states and 16641 transitions. [2021-11-23 12:42:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:42:58,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 [2021-11-23 12:42:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:58,252 INFO L225 Difference]: With dead ends: 8928 [2021-11-23 12:42:58,252 INFO L226 Difference]: Without dead ends: 6201 [2021-11-23 12:42:58,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:42:58,258 INFO L933 BasicCegarLoop]: 7008 mSDtfsCounter, 6627 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6627 SdHoareTripleChecker+Valid, 11465 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:58,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6627 Valid, 11465 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:42:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6201 states. [2021-11-23 12:42:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6201 to 6184. [2021-11-23 12:42:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6179 states have (on average 1.8614662566758375) internal successors, (11502), 6183 states have internal predecessors, (11502), 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) [2021-11-23 12:42:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 11502 transitions. [2021-11-23 12:42:58,566 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 11502 transitions. Word has length 64 [2021-11-23 12:42:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:58,566 INFO L470 AbstractCegarLoop]: Abstraction has 6184 states and 11502 transitions. [2021-11-23 12:42:58,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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) [2021-11-23 12:42:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 11502 transitions. [2021-11-23 12:42:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 12:42:58,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:58,572 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] [2021-11-23 12:42:58,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:42:58,572 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)] === [2021-11-23 12:42:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1670067951, now seen corresponding path program 1 times [2021-11-23 12:42:58,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:58,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152305924] [2021-11-23 12:42:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:58,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:58,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:58,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152305924] [2021-11-23 12:42:58,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152305924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:58,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:58,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:42:58,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021267393] [2021-11-23 12:42:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:58,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:42:58,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:58,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:42:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:42:58,644 INFO L87 Difference]: Start difference. First operand 6184 states and 11502 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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) [2021-11-23 12:42:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:59,137 INFO L93 Difference]: Finished difference Result 15579 states and 28998 transitions. [2021-11-23 12:42:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:42:59,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 65 [2021-11-23 12:42:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:59,168 INFO L225 Difference]: With dead ends: 15579 [2021-11-23 12:42:59,168 INFO L226 Difference]: Without dead ends: 11025 [2021-11-23 12:42:59,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:42:59,178 INFO L933 BasicCegarLoop]: 6658 mSDtfsCounter, 6612 mSDsluCounter, 4476 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6612 SdHoareTripleChecker+Valid, 11134 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:59,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6612 Valid, 11134 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:42:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11025 states. [2021-11-23 12:42:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11025 to 11008. [2021-11-23 12:42:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11008 states, 11003 states have (on average 1.8598564027992366) internal successors, (20464), 11007 states have internal predecessors, (20464), 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) [2021-11-23 12:42:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11008 states to 11008 states and 20464 transitions. [2021-11-23 12:42:59,683 INFO L78 Accepts]: Start accepts. Automaton has 11008 states and 20464 transitions. Word has length 65 [2021-11-23 12:42:59,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:59,684 INFO L470 AbstractCegarLoop]: Abstraction has 11008 states and 20464 transitions. [2021-11-23 12:42:59,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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) [2021-11-23 12:42:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 11008 states and 20464 transitions. [2021-11-23 12:42:59,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 12:42:59,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:59,689 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] [2021-11-23 12:42:59,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:42:59,690 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)] === [2021-11-23 12:42:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1651273478, now seen corresponding path program 1 times [2021-11-23 12:42:59,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:59,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474876868] [2021-11-23 12:42:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:59,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:59,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:59,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474876868] [2021-11-23 12:42:59,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474876868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:42:59,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:42:59,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:42:59,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638166082] [2021-11-23 12:42:59,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:42:59,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:42:59,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:42:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:42:59,760 INFO L87 Difference]: Start difference. First operand 11008 states and 20464 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2021-11-23 12:43:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:00,654 INFO L93 Difference]: Finished difference Result 28685 states and 53331 transitions. [2021-11-23 12:43:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:43:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2021-11-23 12:43:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:00,718 INFO L225 Difference]: With dead ends: 28685 [2021-11-23 12:43:00,718 INFO L226 Difference]: Without dead ends: 20459 [2021-11-23 12:43:00,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:43:00,736 INFO L933 BasicCegarLoop]: 6644 mSDtfsCounter, 6597 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6597 SdHoareTripleChecker+Valid, 11139 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:00,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6597 Valid, 11139 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:43:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20459 states. [2021-11-23 12:43:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20459 to 20442. [2021-11-23 12:43:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20442 states, 20437 states have (on average 1.8580026422664775) internal successors, (37972), 20441 states have internal predecessors, (37972), 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) [2021-11-23 12:43:01,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20442 states to 20442 states and 37972 transitions. [2021-11-23 12:43:01,555 INFO L78 Accepts]: Start accepts. Automaton has 20442 states and 37972 transitions. Word has length 66 [2021-11-23 12:43:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:01,556 INFO L470 AbstractCegarLoop]: Abstraction has 20442 states and 37972 transitions. [2021-11-23 12:43:01,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2021-11-23 12:43:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 20442 states and 37972 transitions. [2021-11-23 12:43:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 12:43:01,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:01,561 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] [2021-11-23 12:43:01,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:43:01,561 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)] === [2021-11-23 12:43:01,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:01,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2046745462, now seen corresponding path program 1 times [2021-11-23 12:43:01,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:01,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643405009] [2021-11-23 12:43:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:01,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:01,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:01,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643405009] [2021-11-23 12:43:01,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643405009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:01,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:01,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:43:01,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315423580] [2021-11-23 12:43:01,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:01,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:43:01,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:43:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:43:01,621 INFO L87 Difference]: Start difference. First operand 20442 states and 37972 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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) [2021-11-23 12:43:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:02,872 INFO L93 Difference]: Finished difference Result 54469 states and 101140 transitions. [2021-11-23 12:43:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:43:02,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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 67 [2021-11-23 12:43:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:02,945 INFO L225 Difference]: With dead ends: 54469 [2021-11-23 12:43:02,945 INFO L226 Difference]: Without dead ends: 38881 [2021-11-23 12:43:02,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:43:02,966 INFO L933 BasicCegarLoop]: 6630 mSDtfsCounter, 6582 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6582 SdHoareTripleChecker+Valid, 11144 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:02,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6582 Valid, 11144 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:43:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38881 states. [2021-11-23 12:43:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38881 to 38864. [2021-11-23 12:43:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38864 states, 38859 states have (on average 1.8556318999459585) internal successors, (72108), 38863 states have internal predecessors, (72108), 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) [2021-11-23 12:43:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38864 states to 38864 states and 72108 transitions. [2021-11-23 12:43:04,192 INFO L78 Accepts]: Start accepts. Automaton has 38864 states and 72108 transitions. Word has length 67 [2021-11-23 12:43:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:04,193 INFO L470 AbstractCegarLoop]: Abstraction has 38864 states and 72108 transitions. [2021-11-23 12:43:04,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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) [2021-11-23 12:43:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 38864 states and 72108 transitions. [2021-11-23 12:43:04,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 12:43:04,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:04,204 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] [2021-11-23 12:43:04,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:43:04,204 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)] === [2021-11-23 12:43:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:04,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1934577867, now seen corresponding path program 1 times [2021-11-23 12:43:04,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:04,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916168133] [2021-11-23 12:43:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:04,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:04,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:04,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916168133] [2021-11-23 12:43:04,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916168133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:04,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:04,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:43:04,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082330874] [2021-11-23 12:43:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:04,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:43:04,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:43:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:43:04,270 INFO L87 Difference]: Start difference. First operand 38864 states and 72108 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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) [2021-11-23 12:43:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:06,500 INFO L93 Difference]: Finished difference Result 105145 states and 194949 transitions. [2021-11-23 12:43:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:43:06,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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 68 [2021-11-23 12:43:06,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:06,629 INFO L225 Difference]: With dead ends: 105145 [2021-11-23 12:43:06,629 INFO L226 Difference]: Without dead ends: 74815 [2021-11-23 12:43:06,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:43:06,657 INFO L933 BasicCegarLoop]: 6616 mSDtfsCounter, 6567 mSDsluCounter, 4533 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6567 SdHoareTripleChecker+Valid, 11149 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:06,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6567 Valid, 11149 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:43:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74815 states. [2021-11-23 12:43:08,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74815 to 74798. [2021-11-23 12:43:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74798 states, 74793 states have (on average 1.8527402297006403) internal successors, (138572), 74797 states have internal predecessors, (138572), 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) [2021-11-23 12:43:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74798 states to 74798 states and 138572 transitions. [2021-11-23 12:43:09,106 INFO L78 Accepts]: Start accepts. Automaton has 74798 states and 138572 transitions. Word has length 68 [2021-11-23 12:43:09,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:09,106 INFO L470 AbstractCegarLoop]: Abstraction has 74798 states and 138572 transitions. [2021-11-23 12:43:09,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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) [2021-11-23 12:43:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand 74798 states and 138572 transitions. [2021-11-23 12:43:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 12:43:09,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:09,110 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] [2021-11-23 12:43:09,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:43:09,110 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)] === [2021-11-23 12:43:09,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash -437161395, now seen corresponding path program 1 times [2021-11-23 12:43:09,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:09,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256567590] [2021-11-23 12:43:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:09,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:09,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:09,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256567590] [2021-11-23 12:43:09,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256567590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:09,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:09,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:43:09,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569418410] [2021-11-23 12:43:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:09,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:43:09,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:43:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:43:09,171 INFO L87 Difference]: Start difference. First operand 74798 states and 138572 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2021-11-23 12:43:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:15,714 INFO L93 Difference]: Finished difference Result 324876 states and 599742 transitions. [2021-11-23 12:43:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:43:15,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 68 [2021-11-23 12:43:15,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:16,262 INFO L225 Difference]: With dead ends: 324876 [2021-11-23 12:43:16,262 INFO L226 Difference]: Without dead ends: 265236 [2021-11-23 12:43:16,353 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 [2021-11-23 12:43:16,354 INFO L933 BasicCegarLoop]: 9412 mSDtfsCounter, 15923 mSDsluCounter, 23020 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15923 SdHoareTripleChecker+Valid, 32432 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:16,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15923 Valid, 32432 Invalid, 236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:43:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265236 states. [2021-11-23 12:43:21,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265236 to 127407. [2021-11-23 12:43:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127407 states, 127402 states have (on average 1.8485110123859907) internal successors, (235504), 127406 states have internal predecessors, (235504), 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) [2021-11-23 12:43:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127407 states to 127407 states and 235504 transitions. [2021-11-23 12:43:21,741 INFO L78 Accepts]: Start accepts. Automaton has 127407 states and 235504 transitions. Word has length 68 [2021-11-23 12:43:21,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:21,741 INFO L470 AbstractCegarLoop]: Abstraction has 127407 states and 235504 transitions. [2021-11-23 12:43:21,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2021-11-23 12:43:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 127407 states and 235504 transitions. [2021-11-23 12:43:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 12:43:21,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:21,744 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] [2021-11-23 12:43:21,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:43:21,745 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)] === [2021-11-23 12:43:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash 720182593, now seen corresponding path program 1 times [2021-11-23 12:43:21,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:21,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114681194] [2021-11-23 12:43:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:21,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:21,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:21,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114681194] [2021-11-23 12:43:21,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114681194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:21,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:21,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:43:21,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540859723] [2021-11-23 12:43:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:21,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:43:21,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:43:21,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:43:21,809 INFO L87 Difference]: Start difference. First operand 127407 states and 235504 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2021-11-23 12:43:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:27,919 INFO L93 Difference]: Finished difference Result 312255 states and 575210 transitions. [2021-11-23 12:43:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:43:27,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2021-11-23 12:43:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:28,341 INFO L225 Difference]: With dead ends: 312255 [2021-11-23 12:43:28,341 INFO L226 Difference]: Without dead ends: 200415 [2021-11-23 12:43:28,437 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 [2021-11-23 12:43:28,437 INFO L933 BasicCegarLoop]: 8234 mSDtfsCounter, 6230 mSDsluCounter, 19411 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6230 SdHoareTripleChecker+Valid, 27645 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:28,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6230 Valid, 27645 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:43:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200415 states. [2021-11-23 12:43:33,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200415 to 127732. [2021-11-23 12:43:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127732 states, 127727 states have (on average 1.8463519850932066) internal successors, (235829), 127731 states have internal predecessors, (235829), 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)