./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92aa4dc056ccedcde60ae7f447376d93fb9f66f20db418d40e67517b8efc809e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:40:05,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:40:05,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:40:05,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:40:05,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:40:05,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:40:05,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:40:05,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:40:05,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:40:05,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:40:05,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:40:05,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:40:05,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:40:05,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:40:05,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:40:05,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:40:05,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:40:05,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:40:05,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:40:05,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:40:05,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:40:05,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:40:05,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:40:05,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:40:05,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:40:05,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:40:05,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:40:05,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:40:05,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:40:05,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:40:05,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:40:05,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:40:05,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:40:05,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:40:05,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:40:05,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:40:05,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:40:05,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:40:05,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:40:05,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:40:05,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:40:05,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:40:05,881 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:40:05,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:40:05,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:40:05,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:40:05,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:40:05,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:40:05,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:40:05,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:40:05,883 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:40:05,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:40:05,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:40:05,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:40:05,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:40:05,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:40:05,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:40:05,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:40:05,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:40:05,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:40:05,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:40:05,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:40:05,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:40:05,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:40:05,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:40:05,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:40:05,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:40:05,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:40:05,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:40:05,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:40:05,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:40:05,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:40:05,886 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:40:05,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:40:05,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:40:05,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:40:05,887 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_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92aa4dc056ccedcde60ae7f447376d93fb9f66f20db418d40e67517b8efc809e [2021-12-06 18:40:06,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:40:06,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:40:06,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:40:06,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:40:06,096 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:40:06,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem17_label51.c [2021-12-06 18:40:06,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/data/6c846c2cc/5ab3542d61c5449e9c5596253e1a274e/FLAG2f312eaef [2021-12-06 18:40:06,640 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:40:06,641 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/sv-benchmarks/c/eca-rers2012/Problem17_label51.c [2021-12-06 18:40:06,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/data/6c846c2cc/5ab3542d61c5449e9c5596253e1a274e/FLAG2f312eaef [2021-12-06 18:40:07,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/data/6c846c2cc/5ab3542d61c5449e9c5596253e1a274e [2021-12-06 18:40:07,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:40:07,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:40:07,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:40:07,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:40:07,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:40:07,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:40:07" (1/1) ... [2021-12-06 18:40:07,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c744249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:07, skipping insertion in model container [2021-12-06 18:40:07,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:40:07" (1/1) ... [2021-12-06 18:40:07,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:40:07,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:40:07,406 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_0ba347d5-7ebd-45af-a717-243221d74cc8/sv-benchmarks/c/eca-rers2012/Problem17_label51.c[5625,5638] [2021-12-06 18:40:07,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:40:07,806 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:40:07,824 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_0ba347d5-7ebd-45af-a717-243221d74cc8/sv-benchmarks/c/eca-rers2012/Problem17_label51.c[5625,5638] [2021-12-06 18:40:08,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:40:08,095 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:40:08,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08 WrapperNode [2021-12-06 18:40:08,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:40:08,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:40:08,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:40:08,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:40:08,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,323 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2021-12-06 18:40:08,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:40:08,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:40:08,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:40:08,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:40:08,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:40:08,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:40:08,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:40:08,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:40:08,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (1/1) ... [2021-12-06 18:40:08,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:40:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:40:08,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:40:08,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:40:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:40:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:40:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:40:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:40:08,745 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:40:08,746 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:40:11,201 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:40:11,215 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:40:11,215 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:40:11,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:40:11 BoogieIcfgContainer [2021-12-06 18:40:11,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:40:11,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:40:11,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:40:11,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:40:11,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:40:07" (1/3) ... [2021-12-06 18:40:11,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1652fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:40:11, skipping insertion in model container [2021-12-06 18:40:11,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:08" (2/3) ... [2021-12-06 18:40:11,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1652fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:40:11, skipping insertion in model container [2021-12-06 18:40:11,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:40:11" (3/3) ... [2021-12-06 18:40:11,225 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label51.c [2021-12-06 18:40:11,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:40:11,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:40:11,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:40:11,274 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:40:11,275 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:40:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) [2021-12-06 18:40:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 18:40:11,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:11,302 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] [2021-12-06 18:40:11,303 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:11,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:11,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2088660649, now seen corresponding path program 1 times [2021-12-06 18:40:11,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:11,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250974543] [2021-12-06 18:40:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:11,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:40:11,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:11,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250974543] [2021-12-06 18:40:11,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250974543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:11,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:11,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:40:11,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605092315] [2021-12-06 18:40:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:11,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:11,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:11,538 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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) [2021-12-06 18:40:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:13,924 INFO L93 Difference]: Finished difference Result 1680 states and 3074 transitions. [2021-12-06 18:40:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:13,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2021-12-06 18:40:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:13,946 INFO L225 Difference]: With dead ends: 1680 [2021-12-06 18:40:13,946 INFO L226 Difference]: Without dead ends: 1011 [2021-12-06 18:40:13,952 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 [2021-12-06 18:40:13,955 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 544 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:13,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 220 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 18:40:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-12-06 18:40:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 996. [2021-12-06 18:40:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.735678391959799) internal successors, (1727), 995 states have internal predecessors, (1727), 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) [2021-12-06 18:40:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1727 transitions. [2021-12-06 18:40:14,036 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1727 transitions. Word has length 37 [2021-12-06 18:40:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:14,036 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1727 transitions. [2021-12-06 18:40:14,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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) [2021-12-06 18:40:14,037 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1727 transitions. [2021-12-06 18:40:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 18:40:14,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:14,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:14,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:40:14,041 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:14,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:14,042 INFO L85 PathProgramCache]: Analyzing trace with hash 52735373, now seen corresponding path program 1 times [2021-12-06 18:40:14,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:14,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575283268] [2021-12-06 18:40:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:14,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:40:14,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:14,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575283268] [2021-12-06 18:40:14,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575283268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:14,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:14,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:40:14,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918301548] [2021-12-06 18:40:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:14,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:14,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:14,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:14,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:14,165 INFO L87 Difference]: Start difference. First operand 996 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:16,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:16,037 INFO L93 Difference]: Finished difference Result 2873 states and 5026 transitions. [2021-12-06 18:40:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:16,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-12-06 18:40:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:16,046 INFO L225 Difference]: With dead ends: 2873 [2021-12-06 18:40:16,046 INFO L226 Difference]: Without dead ends: 1879 [2021-12-06 18:40:16,048 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 [2021-12-06 18:40:16,049 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:16,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 521 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 18:40:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-12-06 18:40:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1870. [2021-12-06 18:40:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.4724451578384163) internal successors, (2752), 1869 states have internal predecessors, (2752), 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) [2021-12-06 18:40:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2752 transitions. [2021-12-06 18:40:16,089 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2752 transitions. Word has length 102 [2021-12-06 18:40:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:16,089 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 2752 transitions. [2021-12-06 18:40:16,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2752 transitions. [2021-12-06 18:40:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 18:40:16,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:16,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:16,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:40:16,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 834662076, now seen corresponding path program 1 times [2021-12-06 18:40:16,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:16,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961299758] [2021-12-06 18:40:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:16,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:40:16,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:16,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961299758] [2021-12-06 18:40:16,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961299758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:16,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:16,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:16,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733132179] [2021-12-06 18:40:16,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:16,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:16,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:16,199 INFO L87 Difference]: Start difference. First operand 1870 states and 2752 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-06 18:40:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:18,094 INFO L93 Difference]: Finished difference Result 5454 states and 8042 transitions. [2021-12-06 18:40:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2021-12-06 18:40:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:18,109 INFO L225 Difference]: With dead ends: 5454 [2021-12-06 18:40:18,110 INFO L226 Difference]: Without dead ends: 3586 [2021-12-06 18:40:18,112 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 [2021-12-06 18:40:18,113 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 457 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:18,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 914 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 18:40:18,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-12-06 18:40:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3583. [2021-12-06 18:40:18,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3358458961474038) internal successors, (4785), 3582 states have internal predecessors, (4785), 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) [2021-12-06 18:40:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4785 transitions. [2021-12-06 18:40:18,171 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4785 transitions. Word has length 107 [2021-12-06 18:40:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:18,171 INFO L470 AbstractCegarLoop]: Abstraction has 3583 states and 4785 transitions. [2021-12-06 18:40:18,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-06 18:40:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4785 transitions. [2021-12-06 18:40:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-06 18:40:18,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:18,175 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:18,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:40:18,175 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:18,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash -923975225, now seen corresponding path program 1 times [2021-12-06 18:40:18,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:18,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348306541] [2021-12-06 18:40:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:18,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:40:18,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:18,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348306541] [2021-12-06 18:40:18,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348306541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:18,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:18,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:40:18,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360322712] [2021-12-06 18:40:18,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:18,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:18,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:18,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:18,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:18,263 INFO L87 Difference]: Start difference. First operand 3583 states and 4785 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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) [2021-12-06 18:40:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:19,899 INFO L93 Difference]: Finished difference Result 10571 states and 14111 transitions. [2021-12-06 18:40:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:19,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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 148 [2021-12-06 18:40:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:19,917 INFO L225 Difference]: With dead ends: 10571 [2021-12-06 18:40:19,918 INFO L226 Difference]: Without dead ends: 5286 [2021-12-06 18:40:19,922 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 [2021-12-06 18:40:19,923 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:19,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:40:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2021-12-06 18:40:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4431. [2021-12-06 18:40:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 4430 states have (on average 1.209255079006772) internal successors, (5357), 4430 states have internal predecessors, (5357), 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) [2021-12-06 18:40:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 5357 transitions. [2021-12-06 18:40:20,001 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 5357 transitions. Word has length 148 [2021-12-06 18:40:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:20,002 INFO L470 AbstractCegarLoop]: Abstraction has 4431 states and 5357 transitions. [2021-12-06 18:40:20,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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) [2021-12-06 18:40:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 5357 transitions. [2021-12-06 18:40:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-06 18:40:20,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:20,004 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:20,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:40:20,004 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:20,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash -33662266, now seen corresponding path program 1 times [2021-12-06 18:40:20,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:20,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400158536] [2021-12-06 18:40:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:20,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:40:20,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:20,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400158536] [2021-12-06 18:40:20,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400158536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:20,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:20,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:20,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225270020] [2021-12-06 18:40:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:20,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:20,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:20,085 INFO L87 Difference]: Start difference. First operand 4431 states and 5357 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2021-12-06 18:40:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:21,470 INFO L93 Difference]: Finished difference Result 11410 states and 14012 transitions. [2021-12-06 18:40:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 189 [2021-12-06 18:40:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:21,494 INFO L225 Difference]: With dead ends: 11410 [2021-12-06 18:40:21,495 INFO L226 Difference]: Without dead ends: 6981 [2021-12-06 18:40:21,498 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 [2021-12-06 18:40:21,499 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:21,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 785 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 18:40:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2021-12-06 18:40:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6981. [2021-12-06 18:40:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 6980 states have (on average 1.1835243553008596) internal successors, (8261), 6980 states have internal predecessors, (8261), 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) [2021-12-06 18:40:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 8261 transitions. [2021-12-06 18:40:21,592 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 8261 transitions. Word has length 189 [2021-12-06 18:40:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:21,592 INFO L470 AbstractCegarLoop]: Abstraction has 6981 states and 8261 transitions. [2021-12-06 18:40:21,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2021-12-06 18:40:21,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 8261 transitions. [2021-12-06 18:40:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-06 18:40:21,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:21,596 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:21,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:40:21,596 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:21,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash -650402679, now seen corresponding path program 1 times [2021-12-06 18:40:21,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:21,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304006159] [2021-12-06 18:40:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:21,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-06 18:40:21,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:21,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304006159] [2021-12-06 18:40:21,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304006159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:21,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:21,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:21,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522861953] [2021-12-06 18:40:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:21,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:21,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:21,694 INFO L87 Difference]: Start difference. First operand 6981 states and 8261 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-12-06 18:40:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:23,272 INFO L93 Difference]: Finished difference Result 17786 states and 21271 transitions. [2021-12-06 18:40:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:23,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 269 [2021-12-06 18:40:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:23,306 INFO L225 Difference]: With dead ends: 17786 [2021-12-06 18:40:23,306 INFO L226 Difference]: Without dead ends: 9957 [2021-12-06 18:40:23,311 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 [2021-12-06 18:40:23,312 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:23,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 858 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 18:40:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2021-12-06 18:40:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 9957. [2021-12-06 18:40:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9957 states, 9956 states have (on average 1.1449377259943752) internal successors, (11399), 9956 states have internal predecessors, (11399), 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) [2021-12-06 18:40:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9957 states to 9957 states and 11399 transitions. [2021-12-06 18:40:23,425 INFO L78 Accepts]: Start accepts. Automaton has 9957 states and 11399 transitions. Word has length 269 [2021-12-06 18:40:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:23,426 INFO L470 AbstractCegarLoop]: Abstraction has 9957 states and 11399 transitions. [2021-12-06 18:40:23,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-12-06 18:40:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9957 states and 11399 transitions. [2021-12-06 18:40:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-06 18:40:23,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:23,431 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:23,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:40:23,431 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 303507172, now seen corresponding path program 1 times [2021-12-06 18:40:23,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:23,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849449309] [2021-12-06 18:40:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:23,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 18:40:23,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849449309] [2021-12-06 18:40:23,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849449309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:23,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:23,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:23,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311069301] [2021-12-06 18:40:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:23,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:23,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:23,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:23,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:23,525 INFO L87 Difference]: Start difference. First operand 9957 states and 11399 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2021-12-06 18:40:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:25,215 INFO L93 Difference]: Finished difference Result 25017 states and 28859 transitions. [2021-12-06 18:40:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:25,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 309 [2021-12-06 18:40:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:25,237 INFO L225 Difference]: With dead ends: 25017 [2021-12-06 18:40:25,237 INFO L226 Difference]: Without dead ends: 15062 [2021-12-06 18:40:25,245 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 [2021-12-06 18:40:25,246 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 463 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:25,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 368 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:40:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15062 states. [2021-12-06 18:40:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15062 to 13780. [2021-12-06 18:40:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13780 states, 13779 states have (on average 1.1398504971333188) internal successors, (15706), 13779 states have internal predecessors, (15706), 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) [2021-12-06 18:40:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13780 states to 13780 states and 15706 transitions. [2021-12-06 18:40:25,378 INFO L78 Accepts]: Start accepts. Automaton has 13780 states and 15706 transitions. Word has length 309 [2021-12-06 18:40:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:25,378 INFO L470 AbstractCegarLoop]: Abstraction has 13780 states and 15706 transitions. [2021-12-06 18:40:25,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2021-12-06 18:40:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 13780 states and 15706 transitions. [2021-12-06 18:40:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-12-06 18:40:25,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:25,401 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:25,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:40:25,401 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash -851527212, now seen corresponding path program 1 times [2021-12-06 18:40:25,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:25,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626171956] [2021-12-06 18:40:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:25,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:40:25,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:25,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626171956] [2021-12-06 18:40:25,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626171956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:25,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:25,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:25,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951501280] [2021-12-06 18:40:25,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:25,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:40:25,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:25,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:40:25,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:25,528 INFO L87 Difference]: Start difference. First operand 13780 states and 15706 transitions. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 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) [2021-12-06 18:40:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:27,911 INFO L93 Difference]: Finished difference Result 32278 states and 36930 transitions. [2021-12-06 18:40:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:40:27,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 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 376 [2021-12-06 18:40:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:27,929 INFO L225 Difference]: With dead ends: 32278 [2021-12-06 18:40:27,930 INFO L226 Difference]: Without dead ends: 18075 [2021-12-06 18:40:27,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:27,939 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 638 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:27,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 229 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 18:40:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18075 states. [2021-12-06 18:40:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18075 to 18069. [2021-12-06 18:40:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18069 states, 18068 states have (on average 1.1503210095195926) internal successors, (20784), 18068 states have internal predecessors, (20784), 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) [2021-12-06 18:40:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18069 states to 18069 states and 20784 transitions. [2021-12-06 18:40:28,103 INFO L78 Accepts]: Start accepts. Automaton has 18069 states and 20784 transitions. Word has length 376 [2021-12-06 18:40:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:28,103 INFO L470 AbstractCegarLoop]: Abstraction has 18069 states and 20784 transitions. [2021-12-06 18:40:28,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 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) [2021-12-06 18:40:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 18069 states and 20784 transitions. [2021-12-06 18:40:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-12-06 18:40:28,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:28,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:28,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:40:28,112 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1472504530, now seen corresponding path program 1 times [2021-12-06 18:40:28,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:28,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393977440] [2021-12-06 18:40:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:28,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 18:40:28,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:28,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393977440] [2021-12-06 18:40:28,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393977440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:28,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:28,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:28,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23788603] [2021-12-06 18:40:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:28,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:28,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:28,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:28,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:28,268 INFO L87 Difference]: Start difference. First operand 18069 states and 20784 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-12-06 18:40:29,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:29,976 INFO L93 Difference]: Finished difference Result 41261 states and 47726 transitions. [2021-12-06 18:40:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:29,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 423 [2021-12-06 18:40:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:29,996 INFO L225 Difference]: With dead ends: 41261 [2021-12-06 18:40:29,996 INFO L226 Difference]: Without dead ends: 22339 [2021-12-06 18:40:30,008 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 [2021-12-06 18:40:30,009 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 436 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:30,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 858 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:40:30,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22339 states. [2021-12-06 18:40:30,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22339 to 22334. [2021-12-06 18:40:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22334 states, 22333 states have (on average 1.141987193838714) internal successors, (25504), 22333 states have internal predecessors, (25504), 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) [2021-12-06 18:40:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22334 states to 22334 states and 25504 transitions. [2021-12-06 18:40:30,217 INFO L78 Accepts]: Start accepts. Automaton has 22334 states and 25504 transitions. Word has length 423 [2021-12-06 18:40:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:30,218 INFO L470 AbstractCegarLoop]: Abstraction has 22334 states and 25504 transitions. [2021-12-06 18:40:30,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-12-06 18:40:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 22334 states and 25504 transitions. [2021-12-06 18:40:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-12-06 18:40:30,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:30,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:30,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:40:30,228 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:30,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:30,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2020726887, now seen corresponding path program 1 times [2021-12-06 18:40:30,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:30,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268049198] [2021-12-06 18:40:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:30,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-06 18:40:30,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268049198] [2021-12-06 18:40:30,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268049198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:30,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:30,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:30,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342054982] [2021-12-06 18:40:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:30,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:30,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:30,349 INFO L87 Difference]: Start difference. First operand 22334 states and 25504 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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) [2021-12-06 18:40:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:32,183 INFO L93 Difference]: Finished difference Result 56175 states and 64291 transitions. [2021-12-06 18:40:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:32,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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 479 [2021-12-06 18:40:32,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:32,209 INFO L225 Difference]: With dead ends: 56175 [2021-12-06 18:40:32,209 INFO L226 Difference]: Without dead ends: 33843 [2021-12-06 18:40:32,217 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 [2021-12-06 18:40:32,218 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 504 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:32,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 279 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 18:40:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33843 states. [2021-12-06 18:40:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33843 to 33397. [2021-12-06 18:40:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33397 states, 33396 states have (on average 1.134267576955324) internal successors, (37880), 33396 states have internal predecessors, (37880), 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) [2021-12-06 18:40:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33397 states to 33397 states and 37880 transitions. [2021-12-06 18:40:32,510 INFO L78 Accepts]: Start accepts. Automaton has 33397 states and 37880 transitions. Word has length 479 [2021-12-06 18:40:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:32,510 INFO L470 AbstractCegarLoop]: Abstraction has 33397 states and 37880 transitions. [2021-12-06 18:40:32,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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) [2021-12-06 18:40:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 33397 states and 37880 transitions. [2021-12-06 18:40:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-12-06 18:40:32,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:32,521 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:32,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:40:32,521 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:32,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:32,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1681382793, now seen corresponding path program 1 times [2021-12-06 18:40:32,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:32,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648078504] [2021-12-06 18:40:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:32,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 14 proven. 90 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-06 18:40:32,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:32,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648078504] [2021-12-06 18:40:32,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648078504] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:40:32,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001533298] [2021-12-06 18:40:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:32,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:40:32,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:40:32,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:40:32,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:40:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:32,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:40:32,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-06 18:40:33,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:40:33,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001533298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:33,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:40:33,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-06 18:40:33,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254071314] [2021-12-06 18:40:33,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:33,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:33,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:40:33,226 INFO L87 Difference]: Start difference. First operand 33397 states and 37880 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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) [2021-12-06 18:40:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:35,044 INFO L93 Difference]: Finished difference Result 73168 states and 82985 transitions. [2021-12-06 18:40:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:35,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 480 [2021-12-06 18:40:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:35,096 INFO L225 Difference]: With dead ends: 73168 [2021-12-06 18:40:35,097 INFO L226 Difference]: Without dead ends: 38048 [2021-12-06 18:40:35,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:40:35,110 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 496 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:35,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 664 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:40:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38048 states. [2021-12-06 18:40:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38048 to 38045. [2021-12-06 18:40:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38045 states, 38044 states have (on average 1.120912627483966) internal successors, (42644), 38044 states have internal predecessors, (42644), 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) [2021-12-06 18:40:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38045 states to 38045 states and 42644 transitions. [2021-12-06 18:40:35,431 INFO L78 Accepts]: Start accepts. Automaton has 38045 states and 42644 transitions. Word has length 480 [2021-12-06 18:40:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:35,432 INFO L470 AbstractCegarLoop]: Abstraction has 38045 states and 42644 transitions. [2021-12-06 18:40:35,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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) [2021-12-06 18:40:35,432 INFO L276 IsEmpty]: Start isEmpty. Operand 38045 states and 42644 transitions. [2021-12-06 18:40:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2021-12-06 18:40:35,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:35,445 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:35,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:40:35,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:40:35,647 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1279903704, now seen corresponding path program 1 times [2021-12-06 18:40:35,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:35,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855333662] [2021-12-06 18:40:35,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:35,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-12-06 18:40:35,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:35,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855333662] [2021-12-06 18:40:35,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855333662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:35,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:35,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:35,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560294089] [2021-12-06 18:40:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:35,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:35,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:35,887 INFO L87 Difference]: Start difference. First operand 38045 states and 42644 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2021-12-06 18:40:37,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:37,233 INFO L93 Difference]: Finished difference Result 76083 states and 85281 transitions. [2021-12-06 18:40:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:37,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 504 [2021-12-06 18:40:37,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:37,264 INFO L225 Difference]: With dead ends: 76083 [2021-12-06 18:40:37,264 INFO L226 Difference]: Without dead ends: 38040 [2021-12-06 18:40:37,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:37,280 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 595 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:37,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 554 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 18:40:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38040 states. [2021-12-06 18:40:37,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38040 to 38039. [2021-12-06 18:40:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38039 states, 38038 states have (on average 1.1203270413796729) internal successors, (42615), 38038 states have internal predecessors, (42615), 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) [2021-12-06 18:40:37,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38039 states to 38039 states and 42615 transitions. [2021-12-06 18:40:37,617 INFO L78 Accepts]: Start accepts. Automaton has 38039 states and 42615 transitions. Word has length 504 [2021-12-06 18:40:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:37,618 INFO L470 AbstractCegarLoop]: Abstraction has 38039 states and 42615 transitions. [2021-12-06 18:40:37,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2021-12-06 18:40:37,618 INFO L276 IsEmpty]: Start isEmpty. Operand 38039 states and 42615 transitions. [2021-12-06 18:40:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2021-12-06 18:40:37,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:37,639 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:37,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:40:37,639 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash -277505785, now seen corresponding path program 1 times [2021-12-06 18:40:37,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:37,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222708309] [2021-12-06 18:40:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:37,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:40:37,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:37,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222708309] [2021-12-06 18:40:37,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222708309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:37,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:37,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:40:37,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337099957] [2021-12-06 18:40:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:37,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:40:37,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:40:37,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:37,861 INFO L87 Difference]: Start difference. First operand 38039 states and 42615 transitions. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 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) [2021-12-06 18:40:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:40,464 INFO L93 Difference]: Finished difference Result 97818 states and 109234 transitions. [2021-12-06 18:40:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:40:40,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 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 590 [2021-12-06 18:40:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:40,515 INFO L225 Difference]: With dead ends: 97818 [2021-12-06 18:40:40,515 INFO L226 Difference]: Without dead ends: 59781 [2021-12-06 18:40:40,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:40,533 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 539 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:40,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 175 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 18:40:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59781 states. [2021-12-06 18:40:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59781 to 57222. [2021-12-06 18:40:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57222 states, 57221 states have (on average 1.1138218486220095) internal successors, (63734), 57221 states have internal predecessors, (63734), 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) [2021-12-06 18:40:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57222 states to 57222 states and 63734 transitions. [2021-12-06 18:40:41,143 INFO L78 Accepts]: Start accepts. Automaton has 57222 states and 63734 transitions. Word has length 590 [2021-12-06 18:40:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:41,143 INFO L470 AbstractCegarLoop]: Abstraction has 57222 states and 63734 transitions. [2021-12-06 18:40:41,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 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) [2021-12-06 18:40:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 57222 states and 63734 transitions. [2021-12-06 18:40:41,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2021-12-06 18:40:41,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:41,167 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:41,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:40:41,167 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:41,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:41,168 INFO L85 PathProgramCache]: Analyzing trace with hash -728584266, now seen corresponding path program 1 times [2021-12-06 18:40:41,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:41,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888469504] [2021-12-06 18:40:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:41,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-12-06 18:40:41,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:41,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888469504] [2021-12-06 18:40:41,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888469504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:41,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:41,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:40:41,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705728206] [2021-12-06 18:40:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:41,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:40:41,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:40:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:40:41,443 INFO L87 Difference]: Start difference. First operand 57222 states and 63734 transitions. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 4 states have internal predecessors, (348), 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) [2021-12-06 18:40:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:43,585 INFO L93 Difference]: Finished difference Result 116621 states and 129744 transitions. [2021-12-06 18:40:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:40:43,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 4 states have internal predecessors, (348), 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 596 [2021-12-06 18:40:43,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:43,636 INFO L225 Difference]: With dead ends: 116621 [2021-12-06 18:40:43,636 INFO L226 Difference]: Without dead ends: 58487 [2021-12-06 18:40:43,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:40:43,660 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 867 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:43,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 160 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 18:40:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58487 states. [2021-12-06 18:40:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58487 to 58480. [2021-12-06 18:40:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58480 states, 58479 states have (on average 1.1052856580994888) internal successors, (64636), 58479 states have internal predecessors, (64636), 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) [2021-12-06 18:40:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58480 states to 58480 states and 64636 transitions. [2021-12-06 18:40:44,240 INFO L78 Accepts]: Start accepts. Automaton has 58480 states and 64636 transitions. Word has length 596 [2021-12-06 18:40:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:44,241 INFO L470 AbstractCegarLoop]: Abstraction has 58480 states and 64636 transitions. [2021-12-06 18:40:44,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 4 states have internal predecessors, (348), 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) [2021-12-06 18:40:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 58480 states and 64636 transitions. [2021-12-06 18:40:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2021-12-06 18:40:44,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:44,256 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:44,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:40:44,256 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1471035311, now seen corresponding path program 1 times [2021-12-06 18:40:44,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:44,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398291060] [2021-12-06 18:40:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:44,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-12-06 18:40:44,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398291060] [2021-12-06 18:40:44,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398291060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:44,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:44,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:44,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826440326] [2021-12-06 18:40:44,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:44,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:44,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:44,516 INFO L87 Difference]: Start difference. First operand 58480 states and 64636 transitions. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2021-12-06 18:40:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:46,436 INFO L93 Difference]: Finished difference Result 130168 states and 144094 transitions. [2021-12-06 18:40:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:46,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 604 [2021-12-06 18:40:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:46,501 INFO L225 Difference]: With dead ends: 130168 [2021-12-06 18:40:46,501 INFO L226 Difference]: Without dead ends: 70402 [2021-12-06 18:40:46,532 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 [2021-12-06 18:40:46,533 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 192 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:46,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 617 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:40:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70402 states. [2021-12-06 18:40:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70402 to 66569. [2021-12-06 18:40:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66569 states, 66568 states have (on average 1.1034731402475664) internal successors, (73456), 66568 states have internal predecessors, (73456), 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) [2021-12-06 18:40:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66569 states to 66569 states and 73456 transitions. [2021-12-06 18:40:47,217 INFO L78 Accepts]: Start accepts. Automaton has 66569 states and 73456 transitions. Word has length 604 [2021-12-06 18:40:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:47,218 INFO L470 AbstractCegarLoop]: Abstraction has 66569 states and 73456 transitions. [2021-12-06 18:40:47,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2021-12-06 18:40:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 66569 states and 73456 transitions. [2021-12-06 18:40:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2021-12-06 18:40:47,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:47,331 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:47,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:40:47,331 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1774489779, now seen corresponding path program 1 times [2021-12-06 18:40:47,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:47,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424152715] [2021-12-06 18:40:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:47,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 18:40:47,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:47,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424152715] [2021-12-06 18:40:47,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424152715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:47,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:47,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:47,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926928385] [2021-12-06 18:40:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:47,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:47,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:47,551 INFO L87 Difference]: Start difference. First operand 66569 states and 73456 transitions. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2021-12-06 18:40:49,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:49,151 INFO L93 Difference]: Finished difference Result 122469 states and 134953 transitions. [2021-12-06 18:40:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:40:49,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 633 [2021-12-06 18:40:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:49,206 INFO L225 Difference]: With dead ends: 122469 [2021-12-06 18:40:49,207 INFO L226 Difference]: Without dead ends: 67854 [2021-12-06 18:40:49,232 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 [2021-12-06 18:40:49,232 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 101 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:49,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 738 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 18:40:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67854 states. [2021-12-06 18:40:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67854 to 66571. [2021-12-06 18:40:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66571 states, 66570 states have (on average 1.1034700315457413) internal successors, (73458), 66570 states have internal predecessors, (73458), 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) [2021-12-06 18:40:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66571 states to 66571 states and 73458 transitions. [2021-12-06 18:40:49,943 INFO L78 Accepts]: Start accepts. Automaton has 66571 states and 73458 transitions. Word has length 633 [2021-12-06 18:40:49,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:49,944 INFO L470 AbstractCegarLoop]: Abstraction has 66571 states and 73458 transitions. [2021-12-06 18:40:49,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2021-12-06 18:40:49,944 INFO L276 IsEmpty]: Start isEmpty. Operand 66571 states and 73458 transitions. [2021-12-06 18:40:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2021-12-06 18:40:49,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:49,965 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:49,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:40:49,965 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:49,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:49,966 INFO L85 PathProgramCache]: Analyzing trace with hash -719047658, now seen corresponding path program 1 times [2021-12-06 18:40:49,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:49,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164340520] [2021-12-06 18:40:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:49,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 18:40:50,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:50,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164340520] [2021-12-06 18:40:50,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164340520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:50,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:50,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:40:50,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477275583] [2021-12-06 18:40:50,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:50,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:40:50,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:50,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:40:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:50,178 INFO L87 Difference]: Start difference. First operand 66571 states and 73458 transitions. Second operand has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 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) [2021-12-06 18:40:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:52,986 INFO L93 Difference]: Finished difference Result 141226 states and 155588 transitions. [2021-12-06 18:40:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:40:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 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 634 [2021-12-06 18:40:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:53,061 INFO L225 Difference]: With dead ends: 141226 [2021-12-06 18:40:53,062 INFO L226 Difference]: Without dead ends: 74657 [2021-12-06 18:40:53,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:53,098 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 771 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:53,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 164 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 18:40:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74657 states. [2021-12-06 18:40:53,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74657 to 63596. [2021-12-06 18:40:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63596 states, 63595 states have (on average 1.0990958408679927) internal successors, (69897), 63595 states have internal predecessors, (69897), 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) [2021-12-06 18:40:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63596 states to 63596 states and 69897 transitions. [2021-12-06 18:40:53,837 INFO L78 Accepts]: Start accepts. Automaton has 63596 states and 69897 transitions. Word has length 634 [2021-12-06 18:40:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:53,837 INFO L470 AbstractCegarLoop]: Abstraction has 63596 states and 69897 transitions. [2021-12-06 18:40:53,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 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) [2021-12-06 18:40:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 63596 states and 69897 transitions. [2021-12-06 18:40:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2021-12-06 18:40:53,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:53,860 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:53,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:40:53,861 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:53,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1361734072, now seen corresponding path program 1 times [2021-12-06 18:40:53,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:53,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541483297] [2021-12-06 18:40:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:53,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 461 proven. 160 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 18:40:54,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:54,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541483297] [2021-12-06 18:40:54,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541483297] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:40:54,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969707817] [2021-12-06 18:40:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:54,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:40:54,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:40:54,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:40:54,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:40:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:54,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:40:54,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 391 proven. 78 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-06 18:40:54,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:40:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-06 18:40:55,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969707817] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 18:40:55,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:40:55,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2021-12-06 18:40:55,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921543531] [2021-12-06 18:40:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:55,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:40:55,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:40:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:40:55,339 INFO L87 Difference]: Start difference. First operand 63596 states and 69897 transitions. Second operand has 4 states, 4 states have (on average 133.25) internal successors, (533), 3 states have internal predecessors, (533), 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) [2021-12-06 18:40:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:58,343 INFO L93 Difference]: Finished difference Result 142523 states and 156449 transitions. [2021-12-06 18:40:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:40:58,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 3 states have internal predecessors, (533), 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 726 [2021-12-06 18:40:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:58,407 INFO L225 Difference]: With dead ends: 142523 [2021-12-06 18:40:58,407 INFO L226 Difference]: Without dead ends: 78929 [2021-12-06 18:40:58,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1454 GetRequests, 1448 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:40:58,435 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 848 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:58,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 156 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 18:40:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78929 states. [2021-12-06 18:40:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78929 to 73821. [2021-12-06 18:40:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73821 states, 73820 states have (on average 1.095705770793823) internal successors, (80885), 73820 states have internal predecessors, (80885), 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) [2021-12-06 18:40:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73821 states to 73821 states and 80885 transitions. [2021-12-06 18:40:59,149 INFO L78 Accepts]: Start accepts. Automaton has 73821 states and 80885 transitions. Word has length 726 [2021-12-06 18:40:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:59,149 INFO L470 AbstractCegarLoop]: Abstraction has 73821 states and 80885 transitions. [2021-12-06 18:40:59,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 3 states have internal predecessors, (533), 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) [2021-12-06 18:40:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 73821 states and 80885 transitions. [2021-12-06 18:40:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2021-12-06 18:40:59,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:59,296 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:59,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:40:59,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 18:40:59,498 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1325675448, now seen corresponding path program 1 times [2021-12-06 18:40:59,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:59,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564195789] [2021-12-06 18:40:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:59,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-12-06 18:40:59,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:59,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564195789] [2021-12-06 18:40:59,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564195789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:59,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:59,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:40:59,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33642704] [2021-12-06 18:40:59,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:59,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:40:59,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:40:59,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:40:59,718 INFO L87 Difference]: Start difference. First operand 73821 states and 80885 transitions. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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) [2021-12-06 18:41:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:41:01,424 INFO L93 Difference]: Finished difference Result 144650 states and 158450 transitions. [2021-12-06 18:41:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:41:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 751 [2021-12-06 18:41:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:41:01,485 INFO L225 Difference]: With dead ends: 144650 [2021-12-06 18:41:01,485 INFO L226 Difference]: Without dead ends: 71256 [2021-12-06 18:41:01,515 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 [2021-12-06 18:41:01,515 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 489 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:41:01,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 661 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 18:41:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71256 states. [2021-12-06 18:41:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71256 to 71252. [2021-12-06 18:41:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71252 states, 71251 states have (on average 1.0865531711835623) internal successors, (77418), 71251 states have internal predecessors, (77418), 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) [2021-12-06 18:41:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71252 states to 71252 states and 77418 transitions. [2021-12-06 18:41:02,331 INFO L78 Accepts]: Start accepts. Automaton has 71252 states and 77418 transitions. Word has length 751 [2021-12-06 18:41:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:41:02,331 INFO L470 AbstractCegarLoop]: Abstraction has 71252 states and 77418 transitions. [2021-12-06 18:41:02,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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) [2021-12-06 18:41:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 71252 states and 77418 transitions. [2021-12-06 18:41:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2021-12-06 18:41:02,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:41:02,360 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:41:02,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 18:41:02,361 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:41:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:41:02,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2043822140, now seen corresponding path program 1 times [2021-12-06 18:41:02,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:41:02,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316727943] [2021-12-06 18:41:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:41:02,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:41:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-12-06 18:41:02,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:41:02,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316727943] [2021-12-06 18:41:02,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316727943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:41:02,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:41:02,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:41:02,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965107938] [2021-12-06 18:41:02,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:41:02,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:41:02,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:41:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:41:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:41:02,624 INFO L87 Difference]: Start difference. First operand 71252 states and 77418 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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) [2021-12-06 18:41:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:41:05,500 INFO L93 Difference]: Finished difference Result 162528 states and 176470 transitions. [2021-12-06 18:41:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:41:05,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 776 [2021-12-06 18:41:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:41:05,591 INFO L225 Difference]: With dead ends: 162528 [2021-12-06 18:41:05,591 INFO L226 Difference]: Without dead ends: 91703 [2021-12-06 18:41:05,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:41:05,632 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 582 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:41:05,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 265 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 18:41:05,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91703 states. [2021-12-06 18:41:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91703 to 78901. [2021-12-06 18:41:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78901 states, 78900 states have (on average 1.0764131812420785) internal successors, (84929), 78900 states have internal predecessors, (84929), 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) [2021-12-06 18:41:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78901 states to 78901 states and 84929 transitions. [2021-12-06 18:41:06,620 INFO L78 Accepts]: Start accepts. Automaton has 78901 states and 84929 transitions. Word has length 776 [2021-12-06 18:41:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:41:06,621 INFO L470 AbstractCegarLoop]: Abstraction has 78901 states and 84929 transitions. [2021-12-06 18:41:06,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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) [2021-12-06 18:41:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 78901 states and 84929 transitions. [2021-12-06 18:41:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-12-06 18:41:06,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:41:06,644 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:41:06,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 18:41:06,644 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:41:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:41:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 96273895, now seen corresponding path program 1 times [2021-12-06 18:41:06,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:41:06,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683779874] [2021-12-06 18:41:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:41:06,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:41:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-12-06 18:41:06,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:41:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683779874] [2021-12-06 18:41:06,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683779874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:41:06,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:41:06,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:41:06,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163732600] [2021-12-06 18:41:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:41:06,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:41:06,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:41:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:41:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:41:06,861 INFO L87 Difference]: Start difference. First operand 78901 states and 84929 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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) [2021-12-06 18:41:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:41:09,528 INFO L93 Difference]: Finished difference Result 169743 states and 182333 transitions. [2021-12-06 18:41:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:41:09,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 782 [2021-12-06 18:41:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:41:09,611 INFO L225 Difference]: With dead ends: 169743 [2021-12-06 18:41:09,611 INFO L226 Difference]: Without dead ends: 91269 [2021-12-06 18:41:09,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:41:09,655 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 589 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:41:09,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 294 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 18:41:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91269 states. [2021-12-06 18:41:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91269 to 79328. [2021-12-06 18:41:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79328 states, 79327 states have (on average 1.076443077388531) internal successors, (85391), 79327 states have internal predecessors, (85391), 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) [2021-12-06 18:41:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79328 states to 79328 states and 85391 transitions. [2021-12-06 18:41:10,644 INFO L78 Accepts]: Start accepts. Automaton has 79328 states and 85391 transitions. Word has length 782 [2021-12-06 18:41:10,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:41:10,644 INFO L470 AbstractCegarLoop]: Abstraction has 79328 states and 85391 transitions. [2021-12-06 18:41:10,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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) [2021-12-06 18:41:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 79328 states and 85391 transitions. [2021-12-06 18:41:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2021-12-06 18:41:10,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:41:10,667 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:41:10,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 18:41:10,667 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:41:10,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:41:10,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1280526696, now seen corresponding path program 1 times [2021-12-06 18:41:10,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:41:10,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129012275] [2021-12-06 18:41:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:41:10,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:41:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-06 18:41:10,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:41:10,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129012275] [2021-12-06 18:41:10,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129012275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:41:10,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:41:10,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:41:10,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691519488] [2021-12-06 18:41:10,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:41:10,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:41:10,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:41:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:41:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:41:10,857 INFO L87 Difference]: Start difference. First operand 79328 states and 85391 transitions. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 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) [2021-12-06 18:41:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:41:12,801 INFO L93 Difference]: Finished difference Result 168033 states and 180889 transitions. [2021-12-06 18:41:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:41:12,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 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 788 [2021-12-06 18:41:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:41:12,872 INFO L225 Difference]: With dead ends: 168033 [2021-12-06 18:41:12,872 INFO L226 Difference]: Without dead ends: 87425 [2021-12-06 18:41:12,907 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 [2021-12-06 18:41:12,907 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 306 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:41:12,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 607 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:41:12,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87425 states. [2021-12-06 18:41:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87425 to 82735. [2021-12-06 18:41:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82735 states, 82734 states have (on average 1.0714337515410834) internal successors, (88644), 82734 states have internal predecessors, (88644), 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) [2021-12-06 18:41:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82735 states to 82735 states and 88644 transitions. [2021-12-06 18:41:13,869 INFO L78 Accepts]: Start accepts. Automaton has 82735 states and 88644 transitions. Word has length 788 [2021-12-06 18:41:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:41:13,869 INFO L470 AbstractCegarLoop]: Abstraction has 82735 states and 88644 transitions. [2021-12-06 18:41:13,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 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) [2021-12-06 18:41:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 82735 states and 88644 transitions. [2021-12-06 18:41:13,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2021-12-06 18:41:13,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:41:13,897 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:41:13,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 18:41:13,897 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:41:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:41:13,898 INFO L85 PathProgramCache]: Analyzing trace with hash 706382245, now seen corresponding path program 1 times [2021-12-06 18:41:13,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:41:13,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162438245] [2021-12-06 18:41:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:41:13,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:41:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 754 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 18:41:14,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:41:14,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162438245] [2021-12-06 18:41:14,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162438245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:41:14,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:41:14,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:41:14,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407051973] [2021-12-06 18:41:14,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:41:14,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:41:14,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:41:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:41:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:41:14,211 INFO L87 Difference]: Start difference. First operand 82735 states and 88644 transitions. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 5 states have internal predecessors, (774), 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) [2021-12-06 18:41:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:41:17,025 INFO L93 Difference]: Finished difference Result 165796 states and 177622 transitions. [2021-12-06 18:41:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:41:17,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 5 states have internal predecessors, (774), 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 808 [2021-12-06 18:41:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:41:17,095 INFO L225 Difference]: With dead ends: 165796 [2021-12-06 18:41:17,095 INFO L226 Difference]: Without dead ends: 83488 [2021-12-06 18:41:17,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:41:17,130 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 1448 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 3672 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 3672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:41:17,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 234 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 3672 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 18:41:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83488 states. [2021-12-06 18:41:17,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83488 to 83160. [2021-12-06 18:41:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83160 states, 83159 states have (on average 1.0710927259827558) internal successors, (89071), 83159 states have internal predecessors, (89071), 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) [2021-12-06 18:41:18,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83160 states to 83160 states and 89071 transitions. [2021-12-06 18:41:18,056 INFO L78 Accepts]: Start accepts. Automaton has 83160 states and 89071 transitions. Word has length 808 [2021-12-06 18:41:18,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:41:18,056 INFO L470 AbstractCegarLoop]: Abstraction has 83160 states and 89071 transitions. [2021-12-06 18:41:18,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 5 states have internal predecessors, (774), 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) [2021-12-06 18:41:18,057 INFO L276 IsEmpty]: Start isEmpty. Operand 83160 states and 89071 transitions. [2021-12-06 18:41:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2021-12-06 18:41:18,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:41:18,083 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:41:18,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 18:41:18,083 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:41:18,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:41:18,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1551425783, now seen corresponding path program 1 times [2021-12-06 18:41:18,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:41:18,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203380165] [2021-12-06 18:41:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:41:18,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:41:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 1060 proven. 105 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 18:41:18,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:41:18,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203380165] [2021-12-06 18:41:18,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203380165] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:41:18,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569925926] [2021-12-06 18:41:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:41:18,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:41:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:41:18,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:41:18,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba347d5-7ebd-45af-a717-243221d74cc8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:41:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:18,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:41:18,548 INFO L286 TraceCheckSpWp]: Computing forward predicates...