./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cff16a021943ea8a3cbc396d88e23120375df06b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cff16a021943ea8a3cbc396d88e23120375df06b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:32:01,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:32:01,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:32:01,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:32:01,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:32:01,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:32:01,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:32:01,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:32:01,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:32:01,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:32:01,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:32:01,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:32:01,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:32:01,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:32:01,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:32:01,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:32:01,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:32:01,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:32:01,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:32:01,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:32:01,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:32:01,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:32:01,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:32:01,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:32:01,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:32:01,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:32:01,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:32:01,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:32:01,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:32:01,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:32:01,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:32:01,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:32:01,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:32:01,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:32:01,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:32:01,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:32:01,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:32:01,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:32:01,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:32:01,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:32:01,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:32:01,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:32:01,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:32:01,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:32:01,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:32:01,746 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:32:01,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:32:01,747 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:32:01,747 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:32:01,747 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:32:01,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:32:01,748 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:32:01,748 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:32:01,749 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:32:01,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:32:01,749 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:32:01,749 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:32:01,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:32:01,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:32:01,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:32:01,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:32:01,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:32:01,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:32:01,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:32:01,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:32:01,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:32:01,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:32:01,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:32:01,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:32:01,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:32:01,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:32:01,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:32:01,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:32:01,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:32:01,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:32:01,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:32:01,756 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:32:01,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:32:01,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:32:01,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:32:01,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:32:01,757 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cff16a021943ea8a3cbc396d88e23120375df06b [2021-10-16 02:32:02,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:32:02,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:32:02,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:32:02,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:32:02,122 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:32:02,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-16 02:32:02,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data/e54df8c43/53dc07cd1c8e49509d24f13577b7a74a/FLAG357f14b1c [2021-10-16 02:32:02,922 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:32:02,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-16 02:32:02,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data/e54df8c43/53dc07cd1c8e49509d24f13577b7a74a/FLAG357f14b1c [2021-10-16 02:32:03,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data/e54df8c43/53dc07cd1c8e49509d24f13577b7a74a [2021-10-16 02:32:03,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:32:03,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:32:03,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:32:03,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:32:03,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:32:03,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:03,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d184faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03, skipping insertion in model container [2021-10-16 02:32:03,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:03,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:32:03,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:32:03,619 WARN L228 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_32179015-f50c-4d33-9080-1b4b5f808e6c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-10-16 02:32:03,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:32:03,636 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:32:03,748 WARN L228 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_32179015-f50c-4d33-9080-1b4b5f808e6c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-10-16 02:32:03,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:32:03,786 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:32:03,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03 WrapperNode [2021-10-16 02:32:03,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:32:03,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:32:03,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:32:03,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:32:03,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:03,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:03,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:32:03,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:32:03,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:32:03,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:32:03,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:03,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:03,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:03,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:03,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:04,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:04,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:04,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:32:04,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:32:04,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:32:04,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:32:04,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (1/1) ... [2021-10-16 02:32:04,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:32:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:32:04,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:32:04,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:32:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:32:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:32:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:32:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:32:06,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:32:06,258 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-10-16 02:32:06,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:32:06 BoogieIcfgContainer [2021-10-16 02:32:06,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:32:06,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:32:06,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:32:06,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:32:06,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:32:03" (1/3) ... [2021-10-16 02:32:06,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0582d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:32:06, skipping insertion in model container [2021-10-16 02:32:06,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:03" (2/3) ... [2021-10-16 02:32:06,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0582d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:32:06, skipping insertion in model container [2021-10-16 02:32:06,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:32:06" (3/3) ... [2021-10-16 02:32:06,281 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-16 02:32:06,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:32:06,292 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-16 02:32:06,359 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:32:06,367 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-16 02:32:06,368 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-16 02:32:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 213 states have (on average 1.727699530516432) internal successors, (368), 236 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:32:06,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:06,415 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:06,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash -662955049, now seen corresponding path program 1 times [2021-10-16 02:32:06,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:06,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829801391] [2021-10-16 02:32:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:06,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:06,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:06,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829801391] [2021-10-16 02:32:06,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829801391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:06,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:06,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:06,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486116897] [2021-10-16 02:32:06,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:06,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:07,017 INFO L87 Difference]: Start difference. First operand has 237 states, 213 states have (on average 1.727699530516432) internal successors, (368), 236 states have internal predecessors, (368), 0 states have call successors, (0), 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 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:07,176 INFO L93 Difference]: Finished difference Result 472 states and 737 transitions. [2021-10-16 02:32:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:07,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-10-16 02:32:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:07,202 INFO L225 Difference]: With dead ends: 472 [2021-10-16 02:32:07,202 INFO L226 Difference]: Without dead ends: 236 [2021-10-16 02:32:07,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-16 02:32:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2021-10-16 02:32:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 193 states have (on average 1.5958549222797926) internal successors, (308), 211 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 308 transitions. [2021-10-16 02:32:07,296 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 308 transitions. Word has length 11 [2021-10-16 02:32:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:07,297 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 308 transitions. [2021-10-16 02:32:07,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:07,297 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 308 transitions. [2021-10-16 02:32:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:32:07,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:07,299 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:07,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:32:07,300 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:07,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1705836732, now seen corresponding path program 1 times [2021-10-16 02:32:07,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:07,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255584988] [2021-10-16 02:32:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:07,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:07,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:07,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255584988] [2021-10-16 02:32:07,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255584988] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:07,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:07,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:32:07,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789333161] [2021-10-16 02:32:07,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:32:07,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:32:07,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:07,419 INFO L87 Difference]: Start difference. First operand 212 states and 308 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:07,524 INFO L93 Difference]: Finished difference Result 649 states and 946 transitions. [2021-10-16 02:32:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:32:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-10-16 02:32:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:07,532 INFO L225 Difference]: With dead ends: 649 [2021-10-16 02:32:07,533 INFO L226 Difference]: Without dead ends: 438 [2021-10-16 02:32:07,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-16 02:32:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 234. [2021-10-16 02:32:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 215 states have (on average 1.5906976744186045) internal successors, (342), 233 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) [2021-10-16 02:32:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 342 transitions. [2021-10-16 02:32:07,571 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 342 transitions. Word has length 15 [2021-10-16 02:32:07,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:07,572 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 342 transitions. [2021-10-16 02:32:07,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 342 transitions. [2021-10-16 02:32:07,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:32:07,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:07,574 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:07,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:32:07,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:07,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:07,576 INFO L82 PathProgramCache]: Analyzing trace with hash -917668936, now seen corresponding path program 1 times [2021-10-16 02:32:07,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:07,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294161400] [2021-10-16 02:32:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:07,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:07,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:07,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294161400] [2021-10-16 02:32:07,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294161400] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:07,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:07,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:32:07,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870425715] [2021-10-16 02:32:07,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:32:07,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:32:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:07,687 INFO L87 Difference]: Start difference. First operand 234 states and 342 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:07,809 INFO L93 Difference]: Finished difference Result 857 states and 1248 transitions. [2021-10-16 02:32:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:32:07,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-16 02:32:07,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:07,816 INFO L225 Difference]: With dead ends: 857 [2021-10-16 02:32:07,816 INFO L226 Difference]: Without dead ends: 646 [2021-10-16 02:32:07,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:32:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-10-16 02:32:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 235. [2021-10-16 02:32:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 216 states have (on average 1.587962962962963) internal successors, (343), 234 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 343 transitions. [2021-10-16 02:32:07,838 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 343 transitions. Word has length 16 [2021-10-16 02:32:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:07,838 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 343 transitions. [2021-10-16 02:32:07,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 343 transitions. [2021-10-16 02:32:07,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:32:07,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:07,840 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:07,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:32:07,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:07,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:07,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1241551651, now seen corresponding path program 1 times [2021-10-16 02:32:07,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:07,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646269497] [2021-10-16 02:32:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:07,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:07,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:07,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646269497] [2021-10-16 02:32:07,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646269497] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:07,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:07,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:32:07,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762653336] [2021-10-16 02:32:07,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:32:07,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:07,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:32:07,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:07,998 INFO L87 Difference]: Start difference. First operand 235 states and 343 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:08,071 INFO L93 Difference]: Finished difference Result 655 states and 952 transitions. [2021-10-16 02:32:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:32:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-16 02:32:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:08,076 INFO L225 Difference]: With dead ends: 655 [2021-10-16 02:32:08,076 INFO L226 Difference]: Without dead ends: 444 [2021-10-16 02:32:08,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-16 02:32:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 236. [2021-10-16 02:32:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 217 states have (on average 1.5852534562211982) internal successors, (344), 235 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 344 transitions. [2021-10-16 02:32:08,104 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 344 transitions. Word has length 18 [2021-10-16 02:32:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:08,105 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 344 transitions. [2021-10-16 02:32:08,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 344 transitions. [2021-10-16 02:32:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:32:08,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:08,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:08,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:32:08,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:08,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:08,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1402275292, now seen corresponding path program 1 times [2021-10-16 02:32:08,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:08,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771228612] [2021-10-16 02:32:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:08,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:08,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:08,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771228612] [2021-10-16 02:32:08,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771228612] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:08,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:08,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:08,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336437721] [2021-10-16 02:32:08,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:08,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:08,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:08,292 INFO L87 Difference]: Start difference. First operand 236 states and 344 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:08,326 INFO L93 Difference]: Finished difference Result 474 states and 693 transitions. [2021-10-16 02:32:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:08,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-16 02:32:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:08,330 INFO L225 Difference]: With dead ends: 474 [2021-10-16 02:32:08,330 INFO L226 Difference]: Without dead ends: 263 [2021-10-16 02:32:08,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:08,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-16 02:32:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 231. [2021-10-16 02:32:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 213 states have (on average 1.5774647887323943) internal successors, (336), 230 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 336 transitions. [2021-10-16 02:32:08,347 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 336 transitions. Word has length 18 [2021-10-16 02:32:08,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:08,348 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 336 transitions. [2021-10-16 02:32:08,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 336 transitions. [2021-10-16 02:32:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:32:08,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:08,356 INFO L512 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] [2021-10-16 02:32:08,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:32:08,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:08,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1799561420, now seen corresponding path program 1 times [2021-10-16 02:32:08,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:08,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263183173] [2021-10-16 02:32:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:08,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:08,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:08,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263183173] [2021-10-16 02:32:08,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263183173] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:08,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:08,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:08,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108698001] [2021-10-16 02:32:08,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:08,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:08,512 INFO L87 Difference]: Start difference. First operand 231 states and 336 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:08,593 INFO L93 Difference]: Finished difference Result 473 states and 692 transitions. [2021-10-16 02:32:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:08,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-16 02:32:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:08,597 INFO L225 Difference]: With dead ends: 473 [2021-10-16 02:32:08,597 INFO L226 Difference]: Without dead ends: 267 [2021-10-16 02:32:08,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:08,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-16 02:32:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 211. [2021-10-16 02:32:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 197 states have (on average 1.5431472081218274) internal successors, (304), 210 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 304 transitions. [2021-10-16 02:32:08,613 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 304 transitions. Word has length 22 [2021-10-16 02:32:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:08,613 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 304 transitions. [2021-10-16 02:32:08,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 304 transitions. [2021-10-16 02:32:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:32:08,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:08,616 INFO L512 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] [2021-10-16 02:32:08,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:32:08,616 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:08,617 INFO L82 PathProgramCache]: Analyzing trace with hash -516529140, now seen corresponding path program 1 times [2021-10-16 02:32:08,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:08,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484906767] [2021-10-16 02:32:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:08,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:08,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:08,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484906767] [2021-10-16 02:32:08,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484906767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:08,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:08,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:08,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845929278] [2021-10-16 02:32:08,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:08,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:08,747 INFO L87 Difference]: Start difference. First operand 211 states and 304 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:08,795 INFO L93 Difference]: Finished difference Result 441 states and 636 transitions. [2021-10-16 02:32:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:08,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-10-16 02:32:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:08,799 INFO L225 Difference]: With dead ends: 441 [2021-10-16 02:32:08,799 INFO L226 Difference]: Without dead ends: 255 [2021-10-16 02:32:08,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:08,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-16 02:32:08,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 199. [2021-10-16 02:32:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 187 states have (on average 1.5294117647058822) internal successors, (286), 198 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 286 transitions. [2021-10-16 02:32:08,814 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 286 transitions. Word has length 26 [2021-10-16 02:32:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:08,815 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 286 transitions. [2021-10-16 02:32:08,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 286 transitions. [2021-10-16 02:32:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:32:08,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:08,819 INFO L512 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] [2021-10-16 02:32:08,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:32:08,822 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:08,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1453115858, now seen corresponding path program 1 times [2021-10-16 02:32:08,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:08,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672201513] [2021-10-16 02:32:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:08,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:08,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:08,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672201513] [2021-10-16 02:32:08,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672201513] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:08,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:08,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:08,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097470396] [2021-10-16 02:32:08,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:08,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:08,943 INFO L87 Difference]: Start difference. First operand 199 states and 286 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:09,015 INFO L93 Difference]: Finished difference Result 437 states and 628 transitions. [2021-10-16 02:32:09,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:09,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-10-16 02:32:09,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:09,019 INFO L225 Difference]: With dead ends: 437 [2021-10-16 02:32:09,019 INFO L226 Difference]: Without dead ends: 263 [2021-10-16 02:32:09,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-16 02:32:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 179. [2021-10-16 02:32:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 171 states have (on average 1.4853801169590644) internal successors, (254), 178 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 254 transitions. [2021-10-16 02:32:09,032 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 254 transitions. Word has length 27 [2021-10-16 02:32:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:09,035 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 254 transitions. [2021-10-16 02:32:09,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 254 transitions. [2021-10-16 02:32:09,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:32:09,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:09,038 INFO L512 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] [2021-10-16 02:32:09,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:32:09,039 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1000034464, now seen corresponding path program 1 times [2021-10-16 02:32:09,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:09,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433064046] [2021-10-16 02:32:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:09,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:09,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:09,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433064046] [2021-10-16 02:32:09,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433064046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:09,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:09,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:32:09,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48934799] [2021-10-16 02:32:09,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:32:09,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:32:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:32:09,245 INFO L87 Difference]: Start difference. First operand 179 states and 254 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:09,470 INFO L93 Difference]: Finished difference Result 613 states and 857 transitions. [2021-10-16 02:32:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:32:09,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-10-16 02:32:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:09,475 INFO L225 Difference]: With dead ends: 613 [2021-10-16 02:32:09,476 INFO L226 Difference]: Without dead ends: 459 [2021-10-16 02:32:09,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:32:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-10-16 02:32:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 214. [2021-10-16 02:32:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 206 states have (on average 1.4757281553398058) internal successors, (304), 213 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 304 transitions. [2021-10-16 02:32:09,496 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 304 transitions. Word has length 32 [2021-10-16 02:32:09,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:09,497 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 304 transitions. [2021-10-16 02:32:09,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 304 transitions. [2021-10-16 02:32:09,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:32:09,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:09,499 INFO L512 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] [2021-10-16 02:32:09,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:32:09,499 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1800839453, now seen corresponding path program 1 times [2021-10-16 02:32:09,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:09,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230895071] [2021-10-16 02:32:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:09,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:09,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:09,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230895071] [2021-10-16 02:32:09,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230895071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:09,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:09,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:09,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940564622] [2021-10-16 02:32:09,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:09,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:09,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:09,604 INFO L87 Difference]: Start difference. First operand 214 states and 304 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:09,659 INFO L93 Difference]: Finished difference Result 388 states and 553 transitions. [2021-10-16 02:32:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:09,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-16 02:32:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:09,662 INFO L225 Difference]: With dead ends: 388 [2021-10-16 02:32:09,662 INFO L226 Difference]: Without dead ends: 234 [2021-10-16 02:32:09,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-16 02:32:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 210. [2021-10-16 02:32:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 203 states have (on average 1.4630541871921183) internal successors, (297), 209 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 297 transitions. [2021-10-16 02:32:09,690 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 297 transitions. Word has length 33 [2021-10-16 02:32:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:09,691 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 297 transitions. [2021-10-16 02:32:09,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 297 transitions. [2021-10-16 02:32:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:32:09,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:09,692 INFO L512 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] [2021-10-16 02:32:09,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:32:09,693 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:09,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1614547625, now seen corresponding path program 1 times [2021-10-16 02:32:09,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:09,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989552059] [2021-10-16 02:32:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:09,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:09,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:09,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989552059] [2021-10-16 02:32:09,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989552059] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:09,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:09,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:09,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374693984] [2021-10-16 02:32:09,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:09,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:09,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:09,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:09,803 INFO L87 Difference]: Start difference. First operand 210 states and 297 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:09,870 INFO L93 Difference]: Finished difference Result 446 states and 626 transitions. [2021-10-16 02:32:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:09,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-16 02:32:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:09,875 INFO L225 Difference]: With dead ends: 446 [2021-10-16 02:32:09,875 INFO L226 Difference]: Without dead ends: 279 [2021-10-16 02:32:09,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-10-16 02:32:09,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 194. [2021-10-16 02:32:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.433862433862434) internal successors, (271), 193 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 271 transitions. [2021-10-16 02:32:09,892 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 271 transitions. Word has length 33 [2021-10-16 02:32:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:09,893 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 271 transitions. [2021-10-16 02:32:09,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 271 transitions. [2021-10-16 02:32:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-16 02:32:09,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:09,896 INFO L512 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] [2021-10-16 02:32:09,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 02:32:09,896 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:09,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:09,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1188562306, now seen corresponding path program 1 times [2021-10-16 02:32:09,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:09,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855276506] [2021-10-16 02:32:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:09,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:10,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:10,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855276506] [2021-10-16 02:32:10,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855276506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:10,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:10,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:32:10,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266989026] [2021-10-16 02:32:10,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:32:10,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:32:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:32:10,099 INFO L87 Difference]: Start difference. First operand 194 states and 271 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:10,468 INFO L93 Difference]: Finished difference Result 872 states and 1204 transitions. [2021-10-16 02:32:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:32:10,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-10-16 02:32:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:10,475 INFO L225 Difference]: With dead ends: 872 [2021-10-16 02:32:10,475 INFO L226 Difference]: Without dead ends: 716 [2021-10-16 02:32:10,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:32:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-16 02:32:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 251. [2021-10-16 02:32:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 246 states have (on average 1.4146341463414633) internal successors, (348), 250 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) [2021-10-16 02:32:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 348 transitions. [2021-10-16 02:32:10,508 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 348 transitions. Word has length 36 [2021-10-16 02:32:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:10,508 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 348 transitions. [2021-10-16 02:32:10,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 348 transitions. [2021-10-16 02:32:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 02:32:10,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:10,510 INFO L512 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] [2021-10-16 02:32:10,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-16 02:32:10,511 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:10,511 INFO L82 PathProgramCache]: Analyzing trace with hash 86771068, now seen corresponding path program 1 times [2021-10-16 02:32:10,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:10,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444115809] [2021-10-16 02:32:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:10,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:10,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:10,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444115809] [2021-10-16 02:32:10,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444115809] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:10,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:10,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:32:10,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507170254] [2021-10-16 02:32:10,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:32:10,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:32:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:32:10,591 INFO L87 Difference]: Start difference. First operand 251 states and 348 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2021-10-16 02:32:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:10,699 INFO L93 Difference]: Finished difference Result 404 states and 567 transitions. [2021-10-16 02:32:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:32:10,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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 [2021-10-16 02:32:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:10,703 INFO L225 Difference]: With dead ends: 404 [2021-10-16 02:32:10,703 INFO L226 Difference]: Without dead ends: 402 [2021-10-16 02:32:10,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-10-16 02:32:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 253. [2021-10-16 02:32:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 248 states have (on average 1.4112903225806452) internal successors, (350), 252 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 350 transitions. [2021-10-16 02:32:10,733 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 350 transitions. Word has length 37 [2021-10-16 02:32:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:10,733 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 350 transitions. [2021-10-16 02:32:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2021-10-16 02:32:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 350 transitions. [2021-10-16 02:32:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 02:32:10,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:10,735 INFO L512 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] [2021-10-16 02:32:10,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-16 02:32:10,735 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:10,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2027534155, now seen corresponding path program 1 times [2021-10-16 02:32:10,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:10,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136306394] [2021-10-16 02:32:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:10,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:11,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:11,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136306394] [2021-10-16 02:32:11,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136306394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:11,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:11,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-16 02:32:11,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162850216] [2021-10-16 02:32:11,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:32:11,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:11,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:32:11,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:32:11,008 INFO L87 Difference]: Start difference. First operand 253 states and 350 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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) [2021-10-16 02:32:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:11,836 INFO L93 Difference]: Finished difference Result 988 states and 1361 transitions. [2021-10-16 02:32:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 02:32:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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 [2021-10-16 02:32:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:11,844 INFO L225 Difference]: With dead ends: 988 [2021-10-16 02:32:11,844 INFO L226 Difference]: Without dead ends: 819 [2021-10-16 02:32:11,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 311.2ms TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:32:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-10-16 02:32:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 262. [2021-10-16 02:32:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.4007782101167314) internal successors, (360), 261 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 360 transitions. [2021-10-16 02:32:11,886 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 360 transitions. Word has length 37 [2021-10-16 02:32:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:11,887 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 360 transitions. [2021-10-16 02:32:11,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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) [2021-10-16 02:32:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 360 transitions. [2021-10-16 02:32:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-16 02:32:11,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:11,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:11,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-16 02:32:11,889 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:11,890 INFO L82 PathProgramCache]: Analyzing trace with hash 656969202, now seen corresponding path program 1 times [2021-10-16 02:32:11,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:11,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076899259] [2021-10-16 02:32:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:11,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:12,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:12,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076899259] [2021-10-16 02:32:12,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076899259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:12,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:12,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:32:12,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575679998] [2021-10-16 02:32:12,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:32:12,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:32:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:32:12,042 INFO L87 Difference]: Start difference. First operand 262 states and 360 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:12,200 INFO L93 Difference]: Finished difference Result 540 states and 766 transitions. [2021-10-16 02:32:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:32:12,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-10-16 02:32:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:12,204 INFO L225 Difference]: With dead ends: 540 [2021-10-16 02:32:12,204 INFO L226 Difference]: Without dead ends: 371 [2021-10-16 02:32:12,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:32:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-16 02:32:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 258. [2021-10-16 02:32:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 254 states have (on average 1.389763779527559) internal successors, (353), 257 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 353 transitions. [2021-10-16 02:32:12,248 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 353 transitions. Word has length 38 [2021-10-16 02:32:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:12,249 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 353 transitions. [2021-10-16 02:32:12,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 353 transitions. [2021-10-16 02:32:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-16 02:32:12,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:12,250 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:12,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-16 02:32:12,251 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:12,252 INFO L82 PathProgramCache]: Analyzing trace with hash -628271537, now seen corresponding path program 1 times [2021-10-16 02:32:12,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:12,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610672743] [2021-10-16 02:32:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:12,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:12,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:12,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610672743] [2021-10-16 02:32:12,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610672743] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:12,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:12,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:32:12,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021073449] [2021-10-16 02:32:12,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:32:12,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:12,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:32:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:32:12,309 INFO L87 Difference]: Start difference. First operand 258 states and 353 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:12,457 INFO L93 Difference]: Finished difference Result 736 states and 994 transitions. [2021-10-16 02:32:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:32:12,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-10-16 02:32:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:12,462 INFO L225 Difference]: With dead ends: 736 [2021-10-16 02:32:12,462 INFO L226 Difference]: Without dead ends: 552 [2021-10-16 02:32:12,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-10-16 02:32:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 369. [2021-10-16 02:32:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 365 states have (on average 1.367123287671233) internal successors, (499), 368 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 499 transitions. [2021-10-16 02:32:12,524 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 499 transitions. Word has length 38 [2021-10-16 02:32:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:12,524 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 499 transitions. [2021-10-16 02:32:12,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 499 transitions. [2021-10-16 02:32:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 02:32:12,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:12,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:12,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-16 02:32:12,526 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:12,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1819312364, now seen corresponding path program 1 times [2021-10-16 02:32:12,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:12,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672767172] [2021-10-16 02:32:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:12,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:12,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:12,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672767172] [2021-10-16 02:32:12,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672767172] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:12,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:12,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:12,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144845023] [2021-10-16 02:32:12,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:32:12,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:32:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:32:12,567 INFO L87 Difference]: Start difference. First operand 369 states and 499 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:12,697 INFO L93 Difference]: Finished difference Result 819 states and 1098 transitions. [2021-10-16 02:32:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:32:12,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-16 02:32:12,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:12,701 INFO L225 Difference]: With dead ends: 819 [2021-10-16 02:32:12,701 INFO L226 Difference]: Without dead ends: 482 [2021-10-16 02:32:12,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-16 02:32:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 323. [2021-10-16 02:32:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 1.35423197492163) internal successors, (432), 322 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 432 transitions. [2021-10-16 02:32:12,761 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 432 transitions. Word has length 40 [2021-10-16 02:32:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:12,762 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 432 transitions. [2021-10-16 02:32:12,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 432 transitions. [2021-10-16 02:32:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 02:32:12,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:12,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:12,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-16 02:32:12,764 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:12,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:12,765 INFO L82 PathProgramCache]: Analyzing trace with hash -647008060, now seen corresponding path program 1 times [2021-10-16 02:32:12,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:12,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167894342] [2021-10-16 02:32:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:12,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:12,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:12,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167894342] [2021-10-16 02:32:12,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167894342] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:12,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:12,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:32:12,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133315017] [2021-10-16 02:32:12,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:32:12,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:12,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:32:12,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:32:12,916 INFO L87 Difference]: Start difference. First operand 323 states and 432 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:13,493 INFO L93 Difference]: Finished difference Result 1606 states and 2143 transitions. [2021-10-16 02:32:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:32:13,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-16 02:32:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:13,503 INFO L225 Difference]: With dead ends: 1606 [2021-10-16 02:32:13,503 INFO L226 Difference]: Without dead ends: 1351 [2021-10-16 02:32:13,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:32:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-10-16 02:32:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 403. [2021-10-16 02:32:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 399 states have (on average 1.3333333333333333) internal successors, (532), 402 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 532 transitions. [2021-10-16 02:32:13,587 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 532 transitions. Word has length 40 [2021-10-16 02:32:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:13,587 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 532 transitions. [2021-10-16 02:32:13,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 532 transitions. [2021-10-16 02:32:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-16 02:32:13,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:13,589 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:13,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-16 02:32:13,589 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash -95265734, now seen corresponding path program 1 times [2021-10-16 02:32:13,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:13,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927855749] [2021-10-16 02:32:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:13,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:13,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:13,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927855749] [2021-10-16 02:32:13,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927855749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:13,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:13,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:32:13,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333880141] [2021-10-16 02:32:13,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:32:13,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:32:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:32:13,649 INFO L87 Difference]: Start difference. First operand 403 states and 532 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:13,852 INFO L93 Difference]: Finished difference Result 1114 states and 1472 transitions. [2021-10-16 02:32:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:32:13,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-10-16 02:32:13,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:13,858 INFO L225 Difference]: With dead ends: 1114 [2021-10-16 02:32:13,859 INFO L226 Difference]: Without dead ends: 823 [2021-10-16 02:32:13,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-10-16 02:32:13,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 551. [2021-10-16 02:32:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 547 states have (on average 1.3180987202925045) internal successors, (721), 550 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 721 transitions. [2021-10-16 02:32:13,989 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 721 transitions. Word has length 42 [2021-10-16 02:32:13,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:13,989 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 721 transitions. [2021-10-16 02:32:13,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 721 transitions. [2021-10-16 02:32:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-16 02:32:13,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:13,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:13,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-16 02:32:13,992 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1692645151, now seen corresponding path program 1 times [2021-10-16 02:32:13,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:13,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967628201] [2021-10-16 02:32:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:13,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:14,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:14,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967628201] [2021-10-16 02:32:14,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967628201] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:14,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:14,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:32:14,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570758504] [2021-10-16 02:32:14,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:32:14,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:32:14,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:32:14,123 INFO L87 Difference]: Start difference. First operand 551 states and 721 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:14,434 INFO L93 Difference]: Finished difference Result 1222 states and 1645 transitions. [2021-10-16 02:32:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:32:14,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-10-16 02:32:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:14,441 INFO L225 Difference]: With dead ends: 1222 [2021-10-16 02:32:14,441 INFO L226 Difference]: Without dead ends: 814 [2021-10-16 02:32:14,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 63.0ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:32:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-10-16 02:32:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 547. [2021-10-16 02:32:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 544 states have (on average 1.3125) internal successors, (714), 546 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 714 transitions. [2021-10-16 02:32:14,578 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 714 transitions. Word has length 43 [2021-10-16 02:32:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:14,579 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 714 transitions. [2021-10-16 02:32:14,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 714 transitions. [2021-10-16 02:32:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-16 02:32:14,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:14,581 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:14,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-16 02:32:14,582 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:14,582 INFO L82 PathProgramCache]: Analyzing trace with hash -446182469, now seen corresponding path program 1 times [2021-10-16 02:32:14,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:14,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519322786] [2021-10-16 02:32:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:14,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:14,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:14,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519322786] [2021-10-16 02:32:14,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519322786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:14,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:14,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:14,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422688334] [2021-10-16 02:32:14,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:32:14,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:32:14,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:32:14,650 INFO L87 Difference]: Start difference. First operand 547 states and 714 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:14,835 INFO L93 Difference]: Finished difference Result 1279 states and 1668 transitions. [2021-10-16 02:32:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:32:14,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-10-16 02:32:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:14,841 INFO L225 Difference]: With dead ends: 1279 [2021-10-16 02:32:14,842 INFO L226 Difference]: Without dead ends: 769 [2021-10-16 02:32:14,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:14,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-10-16 02:32:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 506. [2021-10-16 02:32:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 503 states have (on average 1.3061630218687872) internal successors, (657), 505 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 657 transitions. [2021-10-16 02:32:14,943 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 657 transitions. Word has length 45 [2021-10-16 02:32:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:14,944 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 657 transitions. [2021-10-16 02:32:14,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 657 transitions. [2021-10-16 02:32:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-16 02:32:14,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:14,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:14,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-16 02:32:14,946 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:14,947 INFO L82 PathProgramCache]: Analyzing trace with hash 213671649, now seen corresponding path program 1 times [2021-10-16 02:32:14,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:14,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178908189] [2021-10-16 02:32:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:14,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:15,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:15,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178908189] [2021-10-16 02:32:15,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178908189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:15,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:15,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:32:15,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432160594] [2021-10-16 02:32:15,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:32:15,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:15,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:32:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:32:15,103 INFO L87 Difference]: Start difference. First operand 506 states and 657 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:15,529 INFO L93 Difference]: Finished difference Result 1533 states and 2044 transitions. [2021-10-16 02:32:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:32:15,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-10-16 02:32:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:15,537 INFO L225 Difference]: With dead ends: 1533 [2021-10-16 02:32:15,538 INFO L226 Difference]: Without dead ends: 1129 [2021-10-16 02:32:15,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:32:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-10-16 02:32:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 502. [2021-10-16 02:32:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 500 states have (on average 1.3) internal successors, (650), 501 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 650 transitions. [2021-10-16 02:32:15,673 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 650 transitions. Word has length 51 [2021-10-16 02:32:15,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:15,673 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 650 transitions. [2021-10-16 02:32:15,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 650 transitions. [2021-10-16 02:32:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-16 02:32:15,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:15,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:15,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-16 02:32:15,677 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:15,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:15,678 INFO L82 PathProgramCache]: Analyzing trace with hash 214884705, now seen corresponding path program 1 times [2021-10-16 02:32:15,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:15,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493659854] [2021-10-16 02:32:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:15,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:15,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:15,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493659854] [2021-10-16 02:32:15,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493659854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:15,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:15,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:32:15,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036212764] [2021-10-16 02:32:15,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:15,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:15,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:15,765 INFO L87 Difference]: Start difference. First operand 502 states and 650 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:15,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:15,895 INFO L93 Difference]: Finished difference Result 897 states and 1177 transitions. [2021-10-16 02:32:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:15,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-16 02:32:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:15,899 INFO L225 Difference]: With dead ends: 897 [2021-10-16 02:32:15,900 INFO L226 Difference]: Without dead ends: 497 [2021-10-16 02:32:15,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-10-16 02:32:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2021-10-16 02:32:15,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.2943548387096775) internal successors, (642), 496 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 642 transitions. [2021-10-16 02:32:15,995 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 642 transitions. Word has length 59 [2021-10-16 02:32:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:15,995 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 642 transitions. [2021-10-16 02:32:15,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:15,996 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 642 transitions. [2021-10-16 02:32:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-16 02:32:15,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:15,998 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:15,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-16 02:32:15,998 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:15,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:15,999 INFO L82 PathProgramCache]: Analyzing trace with hash 556221272, now seen corresponding path program 1 times [2021-10-16 02:32:15,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:15,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335530946] [2021-10-16 02:32:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:16,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:16,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:16,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335530946] [2021-10-16 02:32:16,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335530946] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:16,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:16,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:32:16,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238990638] [2021-10-16 02:32:16,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:32:16,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:16,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:32:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:32:16,188 INFO L87 Difference]: Start difference. First operand 497 states and 642 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:16,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:16,674 INFO L93 Difference]: Finished difference Result 1312 states and 1730 transitions. [2021-10-16 02:32:16,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:32:16,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-16 02:32:16,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:16,681 INFO L225 Difference]: With dead ends: 1312 [2021-10-16 02:32:16,681 INFO L226 Difference]: Without dead ends: 917 [2021-10-16 02:32:16,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:32:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-10-16 02:32:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 507. [2021-10-16 02:32:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.2865612648221343) internal successors, (651), 506 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 651 transitions. [2021-10-16 02:32:16,801 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 651 transitions. Word has length 63 [2021-10-16 02:32:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:16,802 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 651 transitions. [2021-10-16 02:32:16,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 651 transitions. [2021-10-16 02:32:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-16 02:32:16,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:16,809 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:16,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-16 02:32:16,809 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:16,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:16,810 INFO L82 PathProgramCache]: Analyzing trace with hash -388639555, now seen corresponding path program 1 times [2021-10-16 02:32:16,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:16,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409923948] [2021-10-16 02:32:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:16,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:17,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:17,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409923948] [2021-10-16 02:32:17,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409923948] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:17,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:17,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-16 02:32:17,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943808706] [2021-10-16 02:32:17,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 02:32:17,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:17,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 02:32:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:32:17,273 INFO L87 Difference]: Start difference. First operand 507 states and 651 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:18,720 INFO L93 Difference]: Finished difference Result 1542 states and 1965 transitions. [2021-10-16 02:32:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:32:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-16 02:32:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:18,735 INFO L225 Difference]: With dead ends: 1542 [2021-10-16 02:32:18,735 INFO L226 Difference]: Without dead ends: 1123 [2021-10-16 02:32:18,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 565.3ms TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2021-10-16 02:32:18,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-16 02:32:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 507. [2021-10-16 02:32:18,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.2806324110671936) internal successors, (648), 506 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 648 transitions. [2021-10-16 02:32:18,894 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 648 transitions. Word has length 67 [2021-10-16 02:32:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:18,894 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 648 transitions. [2021-10-16 02:32:18,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 648 transitions. [2021-10-16 02:32:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-16 02:32:18,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:18,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:18,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-16 02:32:18,897 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash -270538526, now seen corresponding path program 1 times [2021-10-16 02:32:18,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:18,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878436975] [2021-10-16 02:32:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:18,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:19,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:19,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878436975] [2021-10-16 02:32:19,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878436975] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:19,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:19,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:32:19,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965130950] [2021-10-16 02:32:19,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:32:19,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:19,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:32:19,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:32:19,061 INFO L87 Difference]: Start difference. First operand 507 states and 648 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:19,837 INFO L93 Difference]: Finished difference Result 1687 states and 2176 transitions. [2021-10-16 02:32:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:32:19,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-16 02:32:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:19,846 INFO L225 Difference]: With dead ends: 1687 [2021-10-16 02:32:19,846 INFO L226 Difference]: Without dead ends: 1268 [2021-10-16 02:32:19,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 154.1ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:32:19,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-10-16 02:32:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 527. [2021-10-16 02:32:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.2642585551330798) internal successors, (665), 526 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 665 transitions. [2021-10-16 02:32:20,002 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 665 transitions. Word has length 71 [2021-10-16 02:32:20,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:20,002 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 665 transitions. [2021-10-16 02:32:20,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 665 transitions. [2021-10-16 02:32:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-16 02:32:20,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:20,013 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:20,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-16 02:32:20,014 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:20,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1697970758, now seen corresponding path program 1 times [2021-10-16 02:32:20,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:20,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256765597] [2021-10-16 02:32:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:20,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:21,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:21,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256765597] [2021-10-16 02:32:21,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256765597] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:21,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:21,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-10-16 02:32:21,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764092582] [2021-10-16 02:32:21,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-16 02:32:21,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:32:21,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-16 02:32:21,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-10-16 02:32:21,668 INFO L87 Difference]: Start difference. First operand 527 states and 665 transitions. Second operand has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:25,683 INFO L93 Difference]: Finished difference Result 1708 states and 2179 transitions. [2021-10-16 02:32:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-16 02:32:25,683 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-10-16 02:32:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:25,691 INFO L225 Difference]: With dead ends: 1708 [2021-10-16 02:32:25,691 INFO L226 Difference]: Without dead ends: 1283 [2021-10-16 02:32:25,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 2968.8ms TimeCoverageRelationStatistics Valid=728, Invalid=3178, Unknown=0, NotChecked=0, Total=3906 [2021-10-16 02:32:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-10-16 02:32:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 554. [2021-10-16 02:32:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.2567811934900543) internal successors, (695), 553 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 695 transitions. [2021-10-16 02:32:25,818 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 695 transitions. Word has length 74 [2021-10-16 02:32:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:25,818 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 695 transitions. [2021-10-16 02:32:25,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 695 transitions. [2021-10-16 02:32:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-16 02:32:25,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:25,820 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 02:32:25,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-16 02:32:25,820 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:25,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1704126403, now seen corresponding path program 1 times [2021-10-16 02:32:25,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:32:25,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553988942] [2021-10-16 02:32:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:25,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:32:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:25,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:32:25,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553988942] [2021-10-16 02:32:25,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553988942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:32:25,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688032909] [2021-10-16 02:32:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:25,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:32:25,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:32:25,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:32:25,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:32:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:26,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:32:26,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:26,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:26,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688032909] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:26,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1417291177] [2021-10-16 02:32:26,994 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-10-16 02:32:26,995 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:32:27,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:32:27,010 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:32:27,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:32:30,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,091 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:32:30,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:32:30,100 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:32:30,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:32:30,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-10-16 02:32:30,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,237 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,259 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,282 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,299 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,316 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,335 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:32:30,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:32:30,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:32:30,483 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:32:30,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-16 02:32:30,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:32:30,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:32:30,490 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,505 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,524 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,542 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,557 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,572 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:32:30,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:32:30,585 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:30,632 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:32:30,649 INFO L180 QuantifierPusher]: treesize reduction 48, result has 84.7 percent of original size [2021-10-16 02:32:30,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-10-16 02:32:30,659 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:32:30,659 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 1 variables, input treesize:4051, output treesize:266 [2021-10-16 02:32:30,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:30,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-16 02:32:30,887 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_13| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:32:30,892 INFO L168 Benchmark]: Toolchain (without parser) took 27672.07 ms. Allocated memory was 90.2 MB in the beginning and 390.1 MB in the end (delta: 299.9 MB). Free memory was 54.5 MB in the beginning and 155.8 MB in the end (delta: -101.3 MB). Peak memory consumption was 197.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:30,892 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 62.6 MB in the beginning and 62.6 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:32:30,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.97 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 54.2 MB in the beginning and 94.0 MB in the end (delta: -39.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:30,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.54 ms. Allocated memory is still 123.7 MB. Free memory was 94.0 MB in the beginning and 89.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:30,893 INFO L168 Benchmark]: Boogie Preprocessor took 108.45 ms. Allocated memory is still 123.7 MB. Free memory was 89.1 MB in the beginning and 85.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:30,893 INFO L168 Benchmark]: RCFGBuilder took 2216.20 ms. Allocated memory is still 123.7 MB. Free memory was 85.6 MB in the beginning and 72.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:30,896 INFO L168 Benchmark]: TraceAbstraction took 24620.87 ms. Allocated memory was 123.7 MB in the beginning and 390.1 MB in the end (delta: 266.3 MB). Free memory was 71.8 MB in the beginning and 155.8 MB in the end (delta: -84.0 MB). Peak memory consumption was 181.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:30,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 62.6 MB in the beginning and 62.6 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 564.97 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 54.2 MB in the beginning and 94.0 MB in the end (delta: -39.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 132.54 ms. Allocated memory is still 123.7 MB. Free memory was 94.0 MB in the beginning and 89.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 108.45 ms. Allocated memory is still 123.7 MB. Free memory was 89.1 MB in the beginning and 85.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2216.20 ms. Allocated memory is still 123.7 MB. Free memory was 85.6 MB in the beginning and 72.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24620.87 ms. Allocated memory was 123.7 MB in the beginning and 390.1 MB in the end (delta: 266.3 MB). Free memory was 71.8 MB in the beginning and 155.8 MB in the end (delta: -84.0 MB). Peak memory consumption was 181.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_13| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_13|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:32:30,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:32:33,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:32:33,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:32:33,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:32:33,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:32:33,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:32:33,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:32:33,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:32:33,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:32:33,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:32:33,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:32:33,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:32:33,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:32:33,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:32:33,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:32:33,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:32:33,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:32:33,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:32:33,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:32:33,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:32:33,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:32:33,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:32:33,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:32:33,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:32:33,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:32:33,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:32:33,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:32:33,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:32:33,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:32:33,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:32:33,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:32:33,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:32:33,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:32:33,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:32:33,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:32:33,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:32:33,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:32:33,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:32:33,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:32:33,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:32:33,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:32:33,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:32:33,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:32:33,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:32:33,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:32:33,834 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:32:33,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:32:33,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:32:33,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:32:33,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:32:33,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:32:33,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:32:33,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:32:33,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:32:33,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:32:33,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:32:33,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:32:33,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:32:33,838 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:32:33,838 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:32:33,839 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:32:33,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:32:33,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:32:33,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:32:33,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:32:33,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:32:33,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:32:33,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:32:33,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:32:33,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:32:33,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:32:33,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:32:33,842 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:32:33,842 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:32:33,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:32:33,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:32:33,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:32:33,843 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cff16a021943ea8a3cbc396d88e23120375df06b [2021-10-16 02:32:34,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:32:34,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:32:34,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:32:34,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:32:34,292 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:32:34,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-16 02:32:34,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data/8664fa503/843599c08454467ca0a0cbd2501a2fed/FLAGf62435193 [2021-10-16 02:32:35,075 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:32:35,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-16 02:32:35,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data/8664fa503/843599c08454467ca0a0cbd2501a2fed/FLAGf62435193 [2021-10-16 02:32:35,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/data/8664fa503/843599c08454467ca0a0cbd2501a2fed [2021-10-16 02:32:35,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:32:35,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:32:35,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:32:35,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:32:35,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:32:35,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:35,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9ec320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35, skipping insertion in model container [2021-10-16 02:32:35,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:35,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:32:35,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:32:35,763 WARN L228 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_32179015-f50c-4d33-9080-1b4b5f808e6c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-10-16 02:32:35,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:32:35,794 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:32:35,908 WARN L228 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_32179015-f50c-4d33-9080-1b4b5f808e6c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-10-16 02:32:35,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:32:35,945 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:32:35,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35 WrapperNode [2021-10-16 02:32:35,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:32:35,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:32:35,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:32:35,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:32:35,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:35,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:32:36,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:32:36,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:32:36,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:32:36,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:32:36,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:32:36,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:32:36,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:32:36,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (1/1) ... [2021-10-16 02:32:36,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:32:36,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:32:36,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:32:36,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:32:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:32:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:32:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:32:36,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:32:37,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:32:37,602 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-10-16 02:32:37,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:32:37 BoogieIcfgContainer [2021-10-16 02:32:37,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:32:37,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:32:37,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:32:37,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:32:37,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:32:35" (1/3) ... [2021-10-16 02:32:37,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaca2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:32:37, skipping insertion in model container [2021-10-16 02:32:37,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:32:35" (2/3) ... [2021-10-16 02:32:37,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaca2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:32:37, skipping insertion in model container [2021-10-16 02:32:37,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:32:37" (3/3) ... [2021-10-16 02:32:37,630 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-16 02:32:37,637 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:32:37,637 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-16 02:32:37,716 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:32:37,728 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-16 02:32:37,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-16 02:32:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 296 states, 272 states have (on average 1.7058823529411764) internal successors, (464), 295 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:37,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:32:37,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:37,801 INFO L512 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] [2021-10-16 02:32:37,802 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:37,821 INFO L82 PathProgramCache]: Analyzing trace with hash 349506240, now seen corresponding path program 1 times [2021-10-16 02:32:37,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:37,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209107761] [2021-10-16 02:32:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:37,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:37,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:37,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:32:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:38,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:32:38,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:38,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:38,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:38,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209107761] [2021-10-16 02:32:38,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209107761] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:38,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:38,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:32:38,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893597488] [2021-10-16 02:32:38,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:32:38,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:38,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:32:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:32:38,388 INFO L87 Difference]: Start difference. First operand has 296 states, 272 states have (on average 1.7058823529411764) internal successors, (464), 295 states have internal predecessors, (464), 0 states have call successors, (0), 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 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:38,459 INFO L93 Difference]: Finished difference Result 572 states and 896 transitions. [2021-10-16 02:32:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:32:38,460 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-16 02:32:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:38,477 INFO L225 Difference]: With dead ends: 572 [2021-10-16 02:32:38,478 INFO L226 Difference]: Without dead ends: 292 [2021-10-16 02:32:38,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:32:38,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-16 02:32:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-16 02:32:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 269 states have (on average 1.5910780669144982) internal successors, (428), 291 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 428 transitions. [2021-10-16 02:32:38,545 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 428 transitions. Word has length 33 [2021-10-16 02:32:38,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:38,546 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 428 transitions. [2021-10-16 02:32:38,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 428 transitions. [2021-10-16 02:32:38,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:32:38,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:38,549 INFO L512 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] [2021-10-16 02:32:38,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:38,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:38,763 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:38,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:38,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1047215368, now seen corresponding path program 1 times [2021-10-16 02:32:38,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:38,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418765118] [2021-10-16 02:32:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:38,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:38,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:38,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:32:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:38,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:32:38,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:39,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:39,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:39,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418765118] [2021-10-16 02:32:39,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418765118] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:39,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:39,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:32:39,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597774868] [2021-10-16 02:32:39,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:32:39,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:32:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:32:39,158 INFO L87 Difference]: Start difference. First operand 292 states and 428 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:39,221 INFO L93 Difference]: Finished difference Result 570 states and 830 transitions. [2021-10-16 02:32:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:32:39,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-16 02:32:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:39,225 INFO L225 Difference]: With dead ends: 570 [2021-10-16 02:32:39,225 INFO L226 Difference]: Without dead ends: 292 [2021-10-16 02:32:39,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-16 02:32:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-16 02:32:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 269 states have (on average 1.546468401486989) internal successors, (416), 291 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 416 transitions. [2021-10-16 02:32:39,249 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 416 transitions. Word has length 33 [2021-10-16 02:32:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:39,250 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 416 transitions. [2021-10-16 02:32:39,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 416 transitions. [2021-10-16 02:32:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 02:32:39,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:39,253 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:39,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 02:32:39,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:39,466 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:39,467 INFO L82 PathProgramCache]: Analyzing trace with hash -600938825, now seen corresponding path program 1 times [2021-10-16 02:32:39,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:39,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819653657] [2021-10-16 02:32:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:39,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:39,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:39,477 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:39,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:32:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:39,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:39,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:39,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:39,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:39,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819653657] [2021-10-16 02:32:39,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819653657] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:39,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:39,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:39,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215093421] [2021-10-16 02:32:39,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:39,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:39,892 INFO L87 Difference]: Start difference. First operand 292 states and 416 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:39,971 INFO L93 Difference]: Finished difference Result 646 states and 929 transitions. [2021-10-16 02:32:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:39,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-10-16 02:32:39,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:39,977 INFO L225 Difference]: With dead ends: 646 [2021-10-16 02:32:39,978 INFO L226 Difference]: Without dead ends: 371 [2021-10-16 02:32:39,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-16 02:32:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 268. [2021-10-16 02:32:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 249 states have (on average 1.5261044176706828) internal successors, (380), 267 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 380 transitions. [2021-10-16 02:32:40,024 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 380 transitions. Word has length 44 [2021-10-16 02:32:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:40,025 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 380 transitions. [2021-10-16 02:32:40,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 380 transitions. [2021-10-16 02:32:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-16 02:32:40,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:40,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:40,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:40,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:40,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:40,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1585020226, now seen corresponding path program 1 times [2021-10-16 02:32:40,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:40,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024341790] [2021-10-16 02:32:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:40,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:40,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:40,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:40,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:32:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:40,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:32:40,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:40,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:40,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:40,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024341790] [2021-10-16 02:32:40,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024341790] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:40,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:40,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:32:40,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534426329] [2021-10-16 02:32:40,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:32:40,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:40,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:32:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:32:40,880 INFO L87 Difference]: Start difference. First operand 268 states and 380 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:41,357 INFO L93 Difference]: Finished difference Result 1063 states and 1527 transitions. [2021-10-16 02:32:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:32:41,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 53 [2021-10-16 02:32:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:41,365 INFO L225 Difference]: With dead ends: 1063 [2021-10-16 02:32:41,366 INFO L226 Difference]: Without dead ends: 812 [2021-10-16 02:32:41,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:32:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-16 02:32:41,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 326. [2021-10-16 02:32:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.50814332247557) internal successors, (463), 325 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 463 transitions. [2021-10-16 02:32:41,407 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 463 transitions. Word has length 53 [2021-10-16 02:32:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:41,408 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 463 transitions. [2021-10-16 02:32:41,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:41,408 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 463 transitions. [2021-10-16 02:32:41,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-16 02:32:41,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:41,415 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:41,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:41,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:41,629 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1352517378, now seen corresponding path program 1 times [2021-10-16 02:32:41,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:41,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68006310] [2021-10-16 02:32:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:41,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:41,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:41,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:41,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:32:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:41,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:32:41,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:42,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:42,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:42,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68006310] [2021-10-16 02:32:42,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68006310] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:42,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:42,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:32:42,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231801127] [2021-10-16 02:32:42,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:32:42,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:32:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:32:42,265 INFO L87 Difference]: Start difference. First operand 326 states and 463 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:42,671 INFO L93 Difference]: Finished difference Result 1064 states and 1526 transitions. [2021-10-16 02:32:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:32:42,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-16 02:32:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:42,678 INFO L225 Difference]: With dead ends: 1064 [2021-10-16 02:32:42,678 INFO L226 Difference]: Without dead ends: 813 [2021-10-16 02:32:42,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:32:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-10-16 02:32:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 327. [2021-10-16 02:32:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 308 states have (on average 1.5032467532467533) internal successors, (463), 326 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 463 transitions. [2021-10-16 02:32:42,701 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 463 transitions. Word has length 54 [2021-10-16 02:32:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:42,702 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 463 transitions. [2021-10-16 02:32:42,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 463 transitions. [2021-10-16 02:32:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-16 02:32:42,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:42,704 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:42,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:42,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:42,917 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:42,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1496271540, now seen corresponding path program 1 times [2021-10-16 02:32:42,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:42,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560237224] [2021-10-16 02:32:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:42,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:42,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:42,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:42,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:32:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:43,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:32:43,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:43,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:43,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:43,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560237224] [2021-10-16 02:32:43,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560237224] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:43,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:43,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:43,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927335518] [2021-10-16 02:32:43,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:43,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:43,492 INFO L87 Difference]: Start difference. First operand 327 states and 463 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:43,548 INFO L93 Difference]: Finished difference Result 837 states and 1196 transitions. [2021-10-16 02:32:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:43,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-16 02:32:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:43,555 INFO L225 Difference]: With dead ends: 837 [2021-10-16 02:32:43,555 INFO L226 Difference]: Without dead ends: 586 [2021-10-16 02:32:43,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-10-16 02:32:43,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 393. [2021-10-16 02:32:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 374 states have (on average 1.4893048128342246) internal successors, (557), 392 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 557 transitions. [2021-10-16 02:32:43,596 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 557 transitions. Word has length 57 [2021-10-16 02:32:43,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:43,597 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 557 transitions. [2021-10-16 02:32:43,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 557 transitions. [2021-10-16 02:32:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-16 02:32:43,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:43,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:43,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:43,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:43,815 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:43,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1355006746, now seen corresponding path program 1 times [2021-10-16 02:32:43,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:43,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123545199] [2021-10-16 02:32:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:43,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:43,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:43,817 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:43,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:32:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:44,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:32:44,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:44,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:44,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:44,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123545199] [2021-10-16 02:32:44,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123545199] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:44,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:44,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:44,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453499347] [2021-10-16 02:32:44,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:44,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:44,377 INFO L87 Difference]: Start difference. First operand 393 states and 557 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:44,439 INFO L93 Difference]: Finished difference Result 937 states and 1337 transitions. [2021-10-16 02:32:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-16 02:32:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:44,444 INFO L225 Difference]: With dead ends: 937 [2021-10-16 02:32:44,444 INFO L226 Difference]: Without dead ends: 651 [2021-10-16 02:32:44,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-10-16 02:32:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 434. [2021-10-16 02:32:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 415 states have (on average 1.472289156626506) internal successors, (611), 433 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 611 transitions. [2021-10-16 02:32:44,485 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 611 transitions. Word has length 58 [2021-10-16 02:32:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:44,485 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 611 transitions. [2021-10-16 02:32:44,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 611 transitions. [2021-10-16 02:32:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-16 02:32:44,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:44,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:44,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:44,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:44,699 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:44,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:44,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2035065116, now seen corresponding path program 1 times [2021-10-16 02:32:44,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:44,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660149453] [2021-10-16 02:32:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:44,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:44,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:44,702 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:44,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:32:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:44,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:32:44,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:45,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:45,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:45,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660149453] [2021-10-16 02:32:45,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660149453] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:45,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:45,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:32:45,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697461690] [2021-10-16 02:32:45,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:32:45,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:32:45,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:32:45,253 INFO L87 Difference]: Start difference. First operand 434 states and 611 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:45,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:45,300 INFO L93 Difference]: Finished difference Result 747 states and 1066 transitions. [2021-10-16 02:32:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:32:45,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-16 02:32:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:45,304 INFO L225 Difference]: With dead ends: 747 [2021-10-16 02:32:45,304 INFO L226 Difference]: Without dead ends: 401 [2021-10-16 02:32:45,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-10-16 02:32:45,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-10-16 02:32:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 382 states have (on average 1.486910994764398) internal successors, (568), 400 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 568 transitions. [2021-10-16 02:32:45,332 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 568 transitions. Word has length 58 [2021-10-16 02:32:45,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:45,332 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 568 transitions. [2021-10-16 02:32:45,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 568 transitions. [2021-10-16 02:32:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-16 02:32:45,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:45,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:45,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-16 02:32:45,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:45,547 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash 265188724, now seen corresponding path program 1 times [2021-10-16 02:32:45,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:45,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535424862] [2021-10-16 02:32:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:45,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:45,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:45,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:45,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:32:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:45,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:45,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:46,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:46,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:46,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535424862] [2021-10-16 02:32:46,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535424862] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:46,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:46,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:46,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425632181] [2021-10-16 02:32:46,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:46,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:46,184 INFO L87 Difference]: Start difference. First operand 401 states and 568 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:46,250 INFO L93 Difference]: Finished difference Result 848 states and 1219 transitions. [2021-10-16 02:32:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:46,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-16 02:32:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:46,255 INFO L225 Difference]: With dead ends: 848 [2021-10-16 02:32:46,255 INFO L226 Difference]: Without dead ends: 556 [2021-10-16 02:32:46,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-16 02:32:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 396. [2021-10-16 02:32:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 378 states have (on average 1.4814814814814814) internal successors, (560), 395 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 560 transitions. [2021-10-16 02:32:46,290 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 560 transitions. Word has length 58 [2021-10-16 02:32:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:46,291 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 560 transitions. [2021-10-16 02:32:46,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 560 transitions. [2021-10-16 02:32:46,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-16 02:32:46,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:46,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:46,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:46,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:46,507 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:46,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1325088052, now seen corresponding path program 1 times [2021-10-16 02:32:46,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:46,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221687605] [2021-10-16 02:32:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:46,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:46,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:46,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:46,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:32:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:46,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:46,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:47,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:47,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:47,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221687605] [2021-10-16 02:32:47,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221687605] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:47,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:47,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:47,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654054774] [2021-10-16 02:32:47,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:47,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:47,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:47,174 INFO L87 Difference]: Start difference. First operand 396 states and 560 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:47,261 INFO L93 Difference]: Finished difference Result 830 states and 1199 transitions. [2021-10-16 02:32:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-16 02:32:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:47,266 INFO L225 Difference]: With dead ends: 830 [2021-10-16 02:32:47,266 INFO L226 Difference]: Without dead ends: 543 [2021-10-16 02:32:47,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:47,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-10-16 02:32:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 376. [2021-10-16 02:32:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 362 states have (on average 1.4585635359116023) internal successors, (528), 375 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 528 transitions. [2021-10-16 02:32:47,306 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 528 transitions. Word has length 62 [2021-10-16 02:32:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:47,306 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 528 transitions. [2021-10-16 02:32:47,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:47,307 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 528 transitions. [2021-10-16 02:32:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-16 02:32:47,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:47,308 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:47,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:47,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:47,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:47,524 INFO L82 PathProgramCache]: Analyzing trace with hash 154319780, now seen corresponding path program 1 times [2021-10-16 02:32:47,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:47,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121846541] [2021-10-16 02:32:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:47,524 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:47,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:47,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:47,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:32:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:47,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:47,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:48,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:48,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:48,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121846541] [2021-10-16 02:32:48,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121846541] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:48,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:48,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:48,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620001487] [2021-10-16 02:32:48,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:48,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:48,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:48,230 INFO L87 Difference]: Start difference. First operand 376 states and 528 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:48,314 INFO L93 Difference]: Finished difference Result 769 states and 1097 transitions. [2021-10-16 02:32:48,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:48,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-10-16 02:32:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:48,319 INFO L225 Difference]: With dead ends: 769 [2021-10-16 02:32:48,319 INFO L226 Difference]: Without dead ends: 502 [2021-10-16 02:32:48,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-16 02:32:48,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 364. [2021-10-16 02:32:48,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 352 states have (on average 1.4488636363636365) internal successors, (510), 363 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 510 transitions. [2021-10-16 02:32:48,354 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 510 transitions. Word has length 66 [2021-10-16 02:32:48,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:48,354 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 510 transitions. [2021-10-16 02:32:48,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:48,355 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 510 transitions. [2021-10-16 02:32:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-16 02:32:48,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:48,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:48,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:48,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:48,576 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash 774595898, now seen corresponding path program 1 times [2021-10-16 02:32:48,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:48,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465437716] [2021-10-16 02:32:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:48,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:48,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:48,580 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:48,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:32:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:49,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:32:49,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:49,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:49,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:49,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465437716] [2021-10-16 02:32:49,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465437716] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:49,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:49,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:32:49,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154805247] [2021-10-16 02:32:49,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:32:49,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:49,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:32:49,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:32:49,637 INFO L87 Difference]: Start difference. First operand 364 states and 510 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:49,912 INFO L93 Difference]: Finished difference Result 1344 states and 1909 transitions. [2021-10-16 02:32:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:32:49,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-16 02:32:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:49,921 INFO L225 Difference]: With dead ends: 1344 [2021-10-16 02:32:49,921 INFO L226 Difference]: Without dead ends: 1089 [2021-10-16 02:32:49,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:32:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-10-16 02:32:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 381. [2021-10-16 02:32:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.4308943089430894) internal successors, (528), 380 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 528 transitions. [2021-10-16 02:32:49,969 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 528 transitions. Word has length 67 [2021-10-16 02:32:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:49,970 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 528 transitions. [2021-10-16 02:32:49,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 528 transitions. [2021-10-16 02:32:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-16 02:32:49,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:49,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:49,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:50,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:50,186 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:50,186 INFO L82 PathProgramCache]: Analyzing trace with hash 888803001, now seen corresponding path program 1 times [2021-10-16 02:32:50,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:50,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366962967] [2021-10-16 02:32:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:50,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:50,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:50,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:50,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:32:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:50,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:50,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:50,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:51,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:51,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366962967] [2021-10-16 02:32:51,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366962967] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:51,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:51,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:51,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970958193] [2021-10-16 02:32:51,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:51,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:51,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:51,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:51,004 INFO L87 Difference]: Start difference. First operand 381 states and 528 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:51,106 INFO L93 Difference]: Finished difference Result 793 states and 1127 transitions. [2021-10-16 02:32:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-10-16 02:32:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:51,111 INFO L225 Difference]: With dead ends: 793 [2021-10-16 02:32:51,111 INFO L226 Difference]: Without dead ends: 538 [2021-10-16 02:32:51,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:51,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-16 02:32:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 361. [2021-10-16 02:32:51,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 353 states have (on average 1.405099150141643) internal successors, (496), 360 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 496 transitions. [2021-10-16 02:32:51,150 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 496 transitions. Word has length 69 [2021-10-16 02:32:51,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:51,150 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 496 transitions. [2021-10-16 02:32:51,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 496 transitions. [2021-10-16 02:32:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-16 02:32:51,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:51,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:51,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-16 02:32:51,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:51,365 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:51,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1196263407, now seen corresponding path program 1 times [2021-10-16 02:32:51,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:51,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442915320] [2021-10-16 02:32:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:51,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:51,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:51,368 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:51,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:32:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:51,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:51,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:52,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:52,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:52,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442915320] [2021-10-16 02:32:52,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442915320] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:52,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:52,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:32:52,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202181834] [2021-10-16 02:32:52,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:32:52,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:32:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:52,235 INFO L87 Difference]: Start difference. First operand 361 states and 496 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:52,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:52,337 INFO L93 Difference]: Finished difference Result 750 states and 1051 transitions. [2021-10-16 02:32:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:32:52,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-10-16 02:32:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:52,341 INFO L225 Difference]: With dead ends: 750 [2021-10-16 02:32:52,342 INFO L226 Difference]: Without dead ends: 515 [2021-10-16 02:32:52,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:32:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-10-16 02:32:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 349. [2021-10-16 02:32:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 343 states have (on average 1.3935860058309038) internal successors, (478), 348 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 478 transitions. [2021-10-16 02:32:52,381 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 478 transitions. Word has length 73 [2021-10-16 02:32:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:52,381 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 478 transitions. [2021-10-16 02:32:52,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:52,382 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 478 transitions. [2021-10-16 02:32:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-16 02:32:52,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:52,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:52,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:52,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:52,597 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:52,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:52,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1358848973, now seen corresponding path program 1 times [2021-10-16 02:32:52,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:52,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211874977] [2021-10-16 02:32:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:52,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:52,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:52,600 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:52,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:32:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:53,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:32:53,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:53,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:53,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:53,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211874977] [2021-10-16 02:32:53,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211874977] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:53,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:53,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:32:53,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894819004] [2021-10-16 02:32:53,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:32:53,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:32:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:32:53,753 INFO L87 Difference]: Start difference. First operand 349 states and 478 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:54,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:54,031 INFO L93 Difference]: Finished difference Result 1021 states and 1430 transitions. [2021-10-16 02:32:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:32:54,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-10-16 02:32:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:54,038 INFO L225 Difference]: With dead ends: 1021 [2021-10-16 02:32:54,038 INFO L226 Difference]: Without dead ends: 798 [2021-10-16 02:32:54,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 63.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:32:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-10-16 02:32:54,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 353. [2021-10-16 02:32:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 347 states have (on average 1.3890489913544668) internal successors, (482), 352 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 482 transitions. [2021-10-16 02:32:54,091 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 482 transitions. Word has length 76 [2021-10-16 02:32:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:54,092 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 482 transitions. [2021-10-16 02:32:54,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 482 transitions. [2021-10-16 02:32:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-16 02:32:54,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:54,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:54,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:54,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:54,311 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:54,311 INFO L82 PathProgramCache]: Analyzing trace with hash 917353494, now seen corresponding path program 1 times [2021-10-16 02:32:54,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:54,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066819974] [2021-10-16 02:32:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:54,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:54,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:54,314 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:54,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:32:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:54,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:32:54,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:55,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:55,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:55,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066819974] [2021-10-16 02:32:55,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066819974] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:55,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:55,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-16 02:32:55,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670132] [2021-10-16 02:32:55,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:32:55,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:32:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:32:55,427 INFO L87 Difference]: Start difference. First operand 353 states and 482 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:55,848 INFO L93 Difference]: Finished difference Result 1441 states and 2002 transitions. [2021-10-16 02:32:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:32:55,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-10-16 02:32:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:55,858 INFO L225 Difference]: With dead ends: 1441 [2021-10-16 02:32:55,858 INFO L226 Difference]: Without dead ends: 1218 [2021-10-16 02:32:55,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:32:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-10-16 02:32:55,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 385. [2021-10-16 02:32:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 379 states have (on average 1.366754617414248) internal successors, (518), 384 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 518 transitions. [2021-10-16 02:32:55,911 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 518 transitions. Word has length 76 [2021-10-16 02:32:55,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:55,911 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 518 transitions. [2021-10-16 02:32:55,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 518 transitions. [2021-10-16 02:32:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-16 02:32:55,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:55,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:55,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:56,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:56,134 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:56,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:56,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1803348706, now seen corresponding path program 1 times [2021-10-16 02:32:56,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:56,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828059753] [2021-10-16 02:32:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:56,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:56,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:56,137 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:56,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:32:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:56,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:32:56,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:57,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:57,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:57,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828059753] [2021-10-16 02:32:57,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828059753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:57,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:57,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-16 02:32:57,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383342279] [2021-10-16 02:32:57,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:32:57,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:32:57,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:32:57,521 INFO L87 Difference]: Start difference. First operand 385 states and 518 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:57,868 INFO L93 Difference]: Finished difference Result 1319 states and 1823 transitions. [2021-10-16 02:32:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:32:57,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-16 02:32:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:57,877 INFO L225 Difference]: With dead ends: 1319 [2021-10-16 02:32:57,877 INFO L226 Difference]: Without dead ends: 1075 [2021-10-16 02:32:57,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:32:57,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-10-16 02:32:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 410. [2021-10-16 02:32:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.349009900990099) internal successors, (545), 409 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2021-10-16 02:32:57,960 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 77 [2021-10-16 02:32:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:57,960 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2021-10-16 02:32:57,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2021-10-16 02:32:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-16 02:32:57,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:57,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:57,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:58,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:58,177 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:58,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:58,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1901865052, now seen corresponding path program 1 times [2021-10-16 02:32:58,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:58,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134575129] [2021-10-16 02:32:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:58,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:58,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:58,180 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:58,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 02:32:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:58,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:58,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:59,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:32:59,441 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:59,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134575129] [2021-10-16 02:32:59,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134575129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:59,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:59,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:32:59,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603408416] [2021-10-16 02:32:59,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:32:59,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:32:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:32:59,449 INFO L87 Difference]: Start difference. First operand 410 states and 545 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:59,662 INFO L93 Difference]: Finished difference Result 1091 states and 1463 transitions. [2021-10-16 02:32:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:32:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-16 02:32:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:59,669 INFO L225 Difference]: With dead ends: 1091 [2021-10-16 02:32:59,670 INFO L226 Difference]: Without dead ends: 833 [2021-10-16 02:32:59,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:32:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-10-16 02:32:59,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 640. [2021-10-16 02:32:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 634 states have (on average 1.3201892744479495) internal successors, (837), 639 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 837 transitions. [2021-10-16 02:32:59,757 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 837 transitions. Word has length 77 [2021-10-16 02:32:59,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:59,757 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 837 transitions. [2021-10-16 02:32:59,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:59,758 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 837 transitions. [2021-10-16 02:32:59,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-16 02:32:59,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:59,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:59,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:59,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:59,973 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:32:59,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:59,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1711536105, now seen corresponding path program 1 times [2021-10-16 02:32:59,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:59,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89379492] [2021-10-16 02:32:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:59,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:59,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:59,977 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:59,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:33:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:00,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:33:00,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:00,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:01,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:01,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89379492] [2021-10-16 02:33:01,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89379492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:01,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:01,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:33:01,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579869654] [2021-10-16 02:33:01,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:33:01,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:01,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:33:01,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:33:01,150 INFO L87 Difference]: Start difference. First operand 640 states and 837 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:01,623 INFO L93 Difference]: Finished difference Result 1522 states and 2000 transitions. [2021-10-16 02:33:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:33:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-16 02:33:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:01,629 INFO L225 Difference]: With dead ends: 1522 [2021-10-16 02:33:01,630 INFO L226 Difference]: Without dead ends: 941 [2021-10-16 02:33:01,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:33:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-10-16 02:33:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 559. [2021-10-16 02:33:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 553 states have (on average 1.3273056057866184) internal successors, (734), 558 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 734 transitions. [2021-10-16 02:33:01,731 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 734 transitions. Word has length 79 [2021-10-16 02:33:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:01,731 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 734 transitions. [2021-10-16 02:33:01,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 734 transitions. [2021-10-16 02:33:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-16 02:33:01,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:01,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:01,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:01,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:01,946 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:01,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:01,946 INFO L82 PathProgramCache]: Analyzing trace with hash 172299307, now seen corresponding path program 1 times [2021-10-16 02:33:01,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:01,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157520133] [2021-10-16 02:33:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:01,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:01,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:01,948 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:01,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:33:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:02,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:33:02,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:02,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:03,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:03,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157520133] [2021-10-16 02:33:03,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157520133] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:03,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:03,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-16 02:33:03,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429878616] [2021-10-16 02:33:03,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:33:03,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:33:03,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:33:03,237 INFO L87 Difference]: Start difference. First operand 559 states and 734 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2021-10-16 02:33:03,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:03,655 INFO L93 Difference]: Finished difference Result 1718 states and 2366 transitions. [2021-10-16 02:33:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:33:03,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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 79 [2021-10-16 02:33:03,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:03,665 INFO L225 Difference]: With dead ends: 1718 [2021-10-16 02:33:03,665 INFO L226 Difference]: Without dead ends: 1303 [2021-10-16 02:33:03,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:33:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-10-16 02:33:03,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 532. [2021-10-16 02:33:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 526 states have (on average 1.326996197718631) internal successors, (698), 531 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 698 transitions. [2021-10-16 02:33:03,741 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 698 transitions. Word has length 79 [2021-10-16 02:33:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:03,741 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 698 transitions. [2021-10-16 02:33:03,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2021-10-16 02:33:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 698 transitions. [2021-10-16 02:33:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-16 02:33:03,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:03,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:03,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:03,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:03,959 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:03,960 INFO L82 PathProgramCache]: Analyzing trace with hash -504696615, now seen corresponding path program 1 times [2021-10-16 02:33:03,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:03,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176491537] [2021-10-16 02:33:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:03,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:03,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:03,962 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:03,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 02:33:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:04,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:33:04,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:04,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:05,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:05,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176491537] [2021-10-16 02:33:05,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176491537] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:05,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:05,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:33:05,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561934408] [2021-10-16 02:33:05,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:33:05,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:33:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:05,133 INFO L87 Difference]: Start difference. First operand 532 states and 698 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:05,363 INFO L93 Difference]: Finished difference Result 1463 states and 1958 transitions. [2021-10-16 02:33:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:33:05,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-16 02:33:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:05,375 INFO L225 Difference]: With dead ends: 1463 [2021-10-16 02:33:05,376 INFO L226 Difference]: Without dead ends: 1075 [2021-10-16 02:33:05,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:33:05,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-10-16 02:33:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 740. [2021-10-16 02:33:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.3092643051771118) internal successors, (961), 739 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 961 transitions. [2021-10-16 02:33:05,489 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 961 transitions. Word has length 79 [2021-10-16 02:33:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:05,490 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 961 transitions. [2021-10-16 02:33:05,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 961 transitions. [2021-10-16 02:33:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-16 02:33:05,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:05,492 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:05,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:05,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:05,707 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:05,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:05,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1939098077, now seen corresponding path program 1 times [2021-10-16 02:33:05,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:05,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840044804] [2021-10-16 02:33:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:05,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:05,709 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:05,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 02:33:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:06,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:33:06,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:06,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:07,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:07,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840044804] [2021-10-16 02:33:07,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840044804] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:07,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:07,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:33:07,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911264259] [2021-10-16 02:33:07,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:33:07,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:33:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:33:07,004 INFO L87 Difference]: Start difference. First operand 740 states and 961 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:07,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:07,259 INFO L93 Difference]: Finished difference Result 2044 states and 2751 transitions. [2021-10-16 02:33:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:33:07,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-16 02:33:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:07,270 INFO L225 Difference]: With dead ends: 2044 [2021-10-16 02:33:07,271 INFO L226 Difference]: Without dead ends: 1505 [2021-10-16 02:33:07,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:33:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-10-16 02:33:07,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 762. [2021-10-16 02:33:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 756 states have (on average 1.3042328042328042) internal successors, (986), 761 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 986 transitions. [2021-10-16 02:33:07,380 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 986 transitions. Word has length 80 [2021-10-16 02:33:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:07,380 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 986 transitions. [2021-10-16 02:33:07,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 986 transitions. [2021-10-16 02:33:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:33:07,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:07,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:07,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:07,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:07,598 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:07,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1575332288, now seen corresponding path program 1 times [2021-10-16 02:33:07,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:07,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356442754] [2021-10-16 02:33:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:07,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:07,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:07,600 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:33:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:08,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:33:08,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:08,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:08,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:08,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356442754] [2021-10-16 02:33:08,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356442754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:08,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:08,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:33:08,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463847705] [2021-10-16 02:33:08,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:33:08,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:08,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:33:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:33:08,911 INFO L87 Difference]: Start difference. First operand 762 states and 986 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:09,171 INFO L93 Difference]: Finished difference Result 1970 states and 2661 transitions. [2021-10-16 02:33:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:33:09,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-10-16 02:33:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:09,179 INFO L225 Difference]: With dead ends: 1970 [2021-10-16 02:33:09,179 INFO L226 Difference]: Without dead ends: 1431 [2021-10-16 02:33:09,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:33:09,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-10-16 02:33:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 772. [2021-10-16 02:33:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 766 states have (on average 1.3002610966057442) internal successors, (996), 771 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 996 transitions. [2021-10-16 02:33:09,303 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 996 transitions. Word has length 81 [2021-10-16 02:33:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:09,303 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 996 transitions. [2021-10-16 02:33:09,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 996 transitions. [2021-10-16 02:33:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-16 02:33:09,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:09,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:09,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:09,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:09,516 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:09,516 INFO L82 PathProgramCache]: Analyzing trace with hash -63459148, now seen corresponding path program 1 times [2021-10-16 02:33:09,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:09,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048590117] [2021-10-16 02:33:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:09,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:09,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:09,518 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:09,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-16 02:33:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:10,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:33:10,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:10,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:10,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:10,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048590117] [2021-10-16 02:33:10,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048590117] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:10,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:10,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:33:10,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516705282] [2021-10-16 02:33:10,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:33:10,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:10,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:33:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:33:10,906 INFO L87 Difference]: Start difference. First operand 772 states and 996 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:11,275 INFO L93 Difference]: Finished difference Result 1844 states and 2413 transitions. [2021-10-16 02:33:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:33:11,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-10-16 02:33:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:11,281 INFO L225 Difference]: With dead ends: 1844 [2021-10-16 02:33:11,282 INFO L226 Difference]: Without dead ends: 1153 [2021-10-16 02:33:11,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 84.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:33:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-10-16 02:33:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 714. [2021-10-16 02:33:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 708 states have (on average 1.2966101694915255) internal successors, (918), 713 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 918 transitions. [2021-10-16 02:33:11,393 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 918 transitions. Word has length 82 [2021-10-16 02:33:11,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:11,394 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 918 transitions. [2021-10-16 02:33:11,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 918 transitions. [2021-10-16 02:33:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-16 02:33:11,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:11,395 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:11,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:11,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:11,610 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash -746810523, now seen corresponding path program 1 times [2021-10-16 02:33:11,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:11,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876164678] [2021-10-16 02:33:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:11,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:11,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:11,612 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:11,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-16 02:33:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:12,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:33:12,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:12,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:12,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:12,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876164678] [2021-10-16 02:33:12,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876164678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:12,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:12,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:12,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967410062] [2021-10-16 02:33:12,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:12,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:12,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:12,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:12,818 INFO L87 Difference]: Start difference. First operand 714 states and 918 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:13,023 INFO L93 Difference]: Finished difference Result 1378 states and 1827 transitions. [2021-10-16 02:33:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:13,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-10-16 02:33:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:13,029 INFO L225 Difference]: With dead ends: 1378 [2021-10-16 02:33:13,030 INFO L226 Difference]: Without dead ends: 839 [2021-10-16 02:33:13,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-10-16 02:33:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 710. [2021-10-16 02:33:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 705 states have (on average 1.2921985815602837) internal successors, (911), 709 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 911 transitions. [2021-10-16 02:33:13,183 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 911 transitions. Word has length 85 [2021-10-16 02:33:13,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:13,183 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 911 transitions. [2021-10-16 02:33:13,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 911 transitions. [2021-10-16 02:33:13,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-16 02:33:13,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:13,186 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:13,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:13,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:13,401 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:13,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1901583634, now seen corresponding path program 1 times [2021-10-16 02:33:13,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:13,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530828023] [2021-10-16 02:33:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:13,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:13,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:13,403 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:13,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 02:33:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:14,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:33:14,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:14,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:14,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:14,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530828023] [2021-10-16 02:33:14,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530828023] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:14,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:14,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:33:14,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026842746] [2021-10-16 02:33:14,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:33:14,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:14,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:33:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:33:14,904 INFO L87 Difference]: Start difference. First operand 710 states and 911 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:15,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:15,238 INFO L93 Difference]: Finished difference Result 2169 states and 2937 transitions. [2021-10-16 02:33:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:33:15,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-10-16 02:33:15,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:15,249 INFO L225 Difference]: With dead ends: 2169 [2021-10-16 02:33:15,250 INFO L226 Difference]: Without dead ends: 1634 [2021-10-16 02:33:15,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:33:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-10-16 02:33:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 704. [2021-10-16 02:33:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 699 states have (on average 1.2947067238912733) internal successors, (905), 703 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 905 transitions. [2021-10-16 02:33:15,370 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 905 transitions. Word has length 85 [2021-10-16 02:33:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:15,371 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 905 transitions. [2021-10-16 02:33:15,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 905 transitions. [2021-10-16 02:33:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-16 02:33:15,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:15,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:15,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:15,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:15,588 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:15,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:15,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2039666434, now seen corresponding path program 1 times [2021-10-16 02:33:15,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:15,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109335647] [2021-10-16 02:33:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:15,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:15,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:15,590 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:15,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-16 02:33:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:16,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:33:16,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:16,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:16,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:16,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109335647] [2021-10-16 02:33:16,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109335647] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:16,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:16,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:33:16,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019477546] [2021-10-16 02:33:16,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:33:16,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:33:16,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:33:16,953 INFO L87 Difference]: Start difference. First operand 704 states and 905 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:17,246 INFO L93 Difference]: Finished difference Result 1262 states and 1665 transitions. [2021-10-16 02:33:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:33:17,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-10-16 02:33:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:17,252 INFO L225 Difference]: With dead ends: 1262 [2021-10-16 02:33:17,252 INFO L226 Difference]: Without dead ends: 1260 [2021-10-16 02:33:17,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:33:17,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-10-16 02:33:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 706. [2021-10-16 02:33:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 701 states have (on average 1.2938659058487874) internal successors, (907), 705 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 907 transitions. [2021-10-16 02:33:17,379 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 907 transitions. Word has length 89 [2021-10-16 02:33:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:17,380 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 907 transitions. [2021-10-16 02:33:17,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 907 transitions. [2021-10-16 02:33:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-16 02:33:17,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:17,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:17,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:17,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:17,595 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:17,595 INFO L82 PathProgramCache]: Analyzing trace with hash -838083920, now seen corresponding path program 1 times [2021-10-16 02:33:17,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:17,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572005331] [2021-10-16 02:33:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:17,596 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:17,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:17,599 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:17,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-16 02:33:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:18,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:33:18,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:19,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:19,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:19,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572005331] [2021-10-16 02:33:19,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572005331] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:19,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:19,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:33:19,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790787034] [2021-10-16 02:33:19,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:33:19,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:19,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:33:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:33:19,371 INFO L87 Difference]: Start difference. First operand 706 states and 907 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:19,650 INFO L93 Difference]: Finished difference Result 1662 states and 2259 transitions. [2021-10-16 02:33:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:33:19,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 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 90 [2021-10-16 02:33:19,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:19,656 INFO L225 Difference]: With dead ends: 1662 [2021-10-16 02:33:19,656 INFO L226 Difference]: Without dead ends: 1125 [2021-10-16 02:33:19,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:33:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-10-16 02:33:19,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 712. [2021-10-16 02:33:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 707 states have (on average 1.2913719943422914) internal successors, (913), 711 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 913 transitions. [2021-10-16 02:33:19,820 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 913 transitions. Word has length 90 [2021-10-16 02:33:19,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:19,821 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 913 transitions. [2021-10-16 02:33:19,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 913 transitions. [2021-10-16 02:33:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-16 02:33:19,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:19,824 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:19,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:20,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:20,039 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2028148931, now seen corresponding path program 1 times [2021-10-16 02:33:20,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:20,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456412820] [2021-10-16 02:33:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:20,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:20,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:20,041 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:20,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-16 02:33:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:21,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:33:21,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:22,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:22,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:22,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456412820] [2021-10-16 02:33:22,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456412820] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:22,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [103129452] [2021-10-16 02:33:22,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:22,602 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:33:22,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:33:22,603 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:33:22,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-10-16 02:33:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:24,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:33:24,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:24,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:25,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [103129452] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:25,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511465439] [2021-10-16 02:33:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:25,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:25,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:25,444 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:33:25,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-16 02:33:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:26,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:33:26,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:27,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:28,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511465439] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:28,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:33:28,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2021-10-16 02:33:28,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889463218] [2021-10-16 02:33:28,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-16 02:33:28,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:28,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-16 02:33:28,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:33:28,073 INFO L87 Difference]: Start difference. First operand 712 states and 913 transitions. Second operand has 18 states, 18 states have (on average 13.055555555555555) internal successors, (235), 17 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:30,313 INFO L93 Difference]: Finished difference Result 2621 states and 3464 transitions. [2021-10-16 02:33:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-16 02:33:30,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.055555555555555) internal successors, (235), 17 states have internal predecessors, (235), 0 states have call successors, (0), 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 139 [2021-10-16 02:33:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:30,327 INFO L225 Difference]: With dead ends: 2621 [2021-10-16 02:33:30,327 INFO L226 Difference]: Without dead ends: 2084 [2021-10-16 02:33:30,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 806 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 1093.4ms TimeCoverageRelationStatistics Valid=709, Invalid=2831, Unknown=0, NotChecked=0, Total=3540 [2021-10-16 02:33:30,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-10-16 02:33:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1040. [2021-10-16 02:33:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1035 states have (on average 1.2917874396135265) internal successors, (1337), 1039 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1337 transitions. [2021-10-16 02:33:30,579 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1337 transitions. Word has length 139 [2021-10-16 02:33:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:30,579 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1337 transitions. [2021-10-16 02:33:30,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.055555555555555) internal successors, (235), 17 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1337 transitions. [2021-10-16 02:33:30,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-10-16 02:33:30,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:30,583 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:30,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:30,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:31,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-16 02:33:31,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:31,191 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:31,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1021878235, now seen corresponding path program 1 times [2021-10-16 02:33:31,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:31,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233581639] [2021-10-16 02:33:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:31,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:31,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:31,193 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:31,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-16 02:33:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:32,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:33:32,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:33,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:34,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:34,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233581639] [2021-10-16 02:33:34,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233581639] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:34,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420411281] [2021-10-16 02:33:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:34,213 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:33:34,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:33:34,214 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:33:34,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-10-16 02:33:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:36,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:33:36,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:36,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:37,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [420411281] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:37,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241440002] [2021-10-16 02:33:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:37,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:37,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:37,523 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:33:37,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-16 02:33:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:39,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:33:39,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:39,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:40,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241440002] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:40,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:33:40,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2021-10-16 02:33:40,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678772669] [2021-10-16 02:33:40,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-16 02:33:40,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:40,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-16 02:33:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:33:40,344 INFO L87 Difference]: Start difference. First operand 1040 states and 1337 transitions. Second operand has 18 states, 18 states have (on average 13.555555555555555) internal successors, (244), 17 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:43,019 INFO L93 Difference]: Finished difference Result 4332 states and 5727 transitions. [2021-10-16 02:33:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-16 02:33:43,020 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.555555555555555) internal successors, (244), 17 states have internal predecessors, (244), 0 states have call successors, (0), 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 140 [2021-10-16 02:33:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:43,036 INFO L225 Difference]: With dead ends: 4332 [2021-10-16 02:33:43,036 INFO L226 Difference]: Without dead ends: 3538 [2021-10-16 02:33:43,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 812 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 1129.8ms TimeCoverageRelationStatistics Valid=914, Invalid=3642, Unknown=0, NotChecked=0, Total=4556 [2021-10-16 02:33:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-10-16 02:33:43,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 1567. [2021-10-16 02:33:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1562 states have (on average 1.296414852752881) internal successors, (2025), 1566 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2025 transitions. [2021-10-16 02:33:43,376 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2025 transitions. Word has length 140 [2021-10-16 02:33:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:43,377 INFO L470 AbstractCegarLoop]: Abstraction has 1567 states and 2025 transitions. [2021-10-16 02:33:43,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.555555555555555) internal successors, (244), 17 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2025 transitions. [2021-10-16 02:33:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-16 02:33:43,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:43,382 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:43,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:43,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-10-16 02:33:43,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-16 02:33:44,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:44,013 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:44,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:44,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1852834664, now seen corresponding path program 1 times [2021-10-16 02:33:44,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:44,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137739214] [2021-10-16 02:33:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:44,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:44,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:44,018 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:44,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-16 02:33:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:45,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:33:45,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:46,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:46,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:46,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137739214] [2021-10-16 02:33:46,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137739214] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:46,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1431134860] [2021-10-16 02:33:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:46,849 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:33:46,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:33:46,850 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:33:46,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-10-16 02:33:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:49,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:33:49,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:49,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:50,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1431134860] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:50,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186138616] [2021-10-16 02:33:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:50,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:50,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:50,074 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:33:50,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-16 02:33:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:52,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:33:52,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:52,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:52,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186138616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:52,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:33:52,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2021-10-16 02:33:52,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357412583] [2021-10-16 02:33:52,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:33:52,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:52,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:33:52,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:33:52,990 INFO L87 Difference]: Start difference. First operand 1567 states and 2025 transitions. Second operand has 12 states, 12 states have (on average 21.416666666666668) internal successors, (257), 11 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:54,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:54,804 INFO L93 Difference]: Finished difference Result 5817 states and 7761 transitions. [2021-10-16 02:33:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:33:54,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.416666666666668) internal successors, (257), 11 states have internal predecessors, (257), 0 states have call successors, (0), 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 141 [2021-10-16 02:33:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:54,816 INFO L225 Difference]: With dead ends: 5817 [2021-10-16 02:33:54,816 INFO L226 Difference]: Without dead ends: 4594 [2021-10-16 02:33:54,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 824 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 325.8ms TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2021-10-16 02:33:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-10-16 02:33:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 1872. [2021-10-16 02:33:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1867 states have (on average 1.3069094804499197) internal successors, (2440), 1871 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2440 transitions. [2021-10-16 02:33:55,326 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2440 transitions. Word has length 141 [2021-10-16 02:33:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:55,326 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 2440 transitions. [2021-10-16 02:33:55,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.416666666666668) internal successors, (257), 11 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2440 transitions. [2021-10-16 02:33:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-16 02:33:55,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:55,331 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:55,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:55,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2021-10-16 02:33:55,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:55,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:55,947 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:33:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:55,947 INFO L82 PathProgramCache]: Analyzing trace with hash 952371056, now seen corresponding path program 1 times [2021-10-16 02:33:55,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:55,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81681124] [2021-10-16 02:33:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:55,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:55,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:55,949 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:55,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-16 02:33:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:58,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:33:58,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:58,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:59,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:59,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81681124] [2021-10-16 02:33:59,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81681124] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:59,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2082267928] [2021-10-16 02:33:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:59,152 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:33:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:33:59,152 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:33:59,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-10-16 02:34:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:01,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:34:01,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-16 02:34:02,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-16 02:34:02,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2082267928] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:02,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:34:02,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 16 [2021-10-16 02:34:02,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889102516] [2021-10-16 02:34:02,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:34:02,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:34:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:34:02,349 INFO L87 Difference]: Start difference. First operand 1872 states and 2440 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:03,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:03,930 INFO L93 Difference]: Finished difference Result 9138 states and 12289 transitions. [2021-10-16 02:34:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:34:03,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 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 142 [2021-10-16 02:34:03,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:03,946 INFO L225 Difference]: With dead ends: 9138 [2021-10-16 02:34:03,946 INFO L226 Difference]: Without dead ends: 7610 [2021-10-16 02:34:03,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 555 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 230.6ms TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-10-16 02:34:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2021-10-16 02:34:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 2291. [2021-10-16 02:34:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2286 states have (on average 1.2804024496937882) internal successors, (2927), 2290 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2927 transitions. [2021-10-16 02:34:04,435 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2927 transitions. Word has length 142 [2021-10-16 02:34:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:04,435 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 2927 transitions. [2021-10-16 02:34:04,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2927 transitions. [2021-10-16 02:34:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-16 02:34:04,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:04,441 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:04,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:04,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2021-10-16 02:34:04,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:04,855 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:34:04,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:04,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1573370662, now seen corresponding path program 1 times [2021-10-16 02:34:04,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:04,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655114116] [2021-10-16 02:34:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:04,856 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:04,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:04,857 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:04,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-16 02:34:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:07,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:34:07,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:34:07,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:34:07,930 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:07,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655114116] [2021-10-16 02:34:07,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655114116] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:07,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:07,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:34:07,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736456879] [2021-10-16 02:34:07,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:34:07,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:34:07,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:34:07,933 INFO L87 Difference]: Start difference. First operand 2291 states and 2927 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:08,932 INFO L93 Difference]: Finished difference Result 6573 states and 8621 transitions. [2021-10-16 02:34:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:34:08,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 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 142 [2021-10-16 02:34:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:08,944 INFO L225 Difference]: With dead ends: 6573 [2021-10-16 02:34:08,944 INFO L226 Difference]: Without dead ends: 4606 [2021-10-16 02:34:08,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:34:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2021-10-16 02:34:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 2291. [2021-10-16 02:34:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2286 states have (on average 1.279527559055118) internal successors, (2925), 2290 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2925 transitions. [2021-10-16 02:34:09,491 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2925 transitions. Word has length 142 [2021-10-16 02:34:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:09,491 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 2925 transitions. [2021-10-16 02:34:09,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2925 transitions. [2021-10-16 02:34:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-16 02:34:09,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:09,497 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:09,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-16 02:34:09,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:09,719 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:34:09,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:09,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1592761434, now seen corresponding path program 1 times [2021-10-16 02:34:09,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:09,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529160504] [2021-10-16 02:34:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:09,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:09,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:09,721 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:09,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-16 02:34:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:12,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:34:12,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:12,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:13,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:13,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529160504] [2021-10-16 02:34:13,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529160504] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:13,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1760206419] [2021-10-16 02:34:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:13,082 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:13,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:34:13,083 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:34:13,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-10-16 02:34:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:16,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:34:16,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:16,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:17,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1760206419] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:17,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001137362] [2021-10-16 02:34:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:17,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:17,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:17,034 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:17,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-16 02:34:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:19,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:34:19,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:20,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:20,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001137362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:20,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:34:20,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 8 [2021-10-16 02:34:20,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286737287] [2021-10-16 02:34:20,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:34:20,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:34:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:34:20,530 INFO L87 Difference]: Start difference. First operand 2291 states and 2925 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:22,091 INFO L93 Difference]: Finished difference Result 9482 states and 12331 transitions. [2021-10-16 02:34:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 02:34:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 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 145 [2021-10-16 02:34:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:22,112 INFO L225 Difference]: With dead ends: 9482 [2021-10-16 02:34:22,112 INFO L226 Difference]: Without dead ends: 7535 [2021-10-16 02:34:22,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 856 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 147.1ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:34:22,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2021-10-16 02:34:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 4054. [2021-10-16 02:34:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4054 states, 4049 states have (on average 1.2771054581378118) internal successors, (5171), 4053 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5171 transitions. [2021-10-16 02:34:23,056 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 5171 transitions. Word has length 145 [2021-10-16 02:34:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:23,056 INFO L470 AbstractCegarLoop]: Abstraction has 4054 states and 5171 transitions. [2021-10-16 02:34:23,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 5171 transitions. [2021-10-16 02:34:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-16 02:34:23,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:23,065 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:23,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:23,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:23,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-16 02:34:23,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:23,675 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:34:23,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:23,675 INFO L82 PathProgramCache]: Analyzing trace with hash 729040484, now seen corresponding path program 1 times [2021-10-16 02:34:23,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:23,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859119362] [2021-10-16 02:34:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:23,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:23,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:23,677 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:23,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-16 02:34:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:26,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:34:26,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-16 02:34:26,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-16 02:34:27,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:27,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859119362] [2021-10-16 02:34:27,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859119362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:27,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:27,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:34:27,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82905803] [2021-10-16 02:34:27,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:34:27,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:34:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:34:27,029 INFO L87 Difference]: Start difference. First operand 4054 states and 5171 transitions. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:27,815 INFO L93 Difference]: Finished difference Result 6721 states and 8720 transitions. [2021-10-16 02:34:27,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:34:27,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 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 145 [2021-10-16 02:34:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:27,822 INFO L225 Difference]: With dead ends: 6721 [2021-10-16 02:34:27,822 INFO L226 Difference]: Without dead ends: 3011 [2021-10-16 02:34:27,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:34:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-10-16 02:34:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2999. [2021-10-16 02:34:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2994 states have (on average 1.2872411489645958) internal successors, (3854), 2998 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3854 transitions. [2021-10-16 02:34:28,475 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3854 transitions. Word has length 145 [2021-10-16 02:34:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:28,475 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 3854 transitions. [2021-10-16 02:34:28,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3854 transitions. [2021-10-16 02:34:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-16 02:34:28,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:28,481 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:28,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-16 02:34:28,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:28,704 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:34:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:28,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2088283744, now seen corresponding path program 1 times [2021-10-16 02:34:28,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:28,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787539899] [2021-10-16 02:34:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:28,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:28,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:28,706 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:28,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-16 02:34:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:31,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:34:31,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:32,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:32,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:32,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787539899] [2021-10-16 02:34:32,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787539899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:32,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [864165130] [2021-10-16 02:34:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:32,913 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:32,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:34:32,914 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:34:32,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2021-10-16 02:34:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:36,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:34:36,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:37,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:37,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [864165130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:37,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889782266] [2021-10-16 02:34:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:37,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:37,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:37,564 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:37,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-16 02:34:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:40,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:34:40,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:41,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:41,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889782266] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:41,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:34:41,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7, 7, 7, 7] total 24 [2021-10-16 02:34:41,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539848006] [2021-10-16 02:34:41,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-16 02:34:41,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:41,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-16 02:34:41,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2021-10-16 02:34:41,452 INFO L87 Difference]: Start difference. First operand 2999 states and 3854 transitions. Second operand has 24 states, 24 states have (on average 18.25) internal successors, (438), 24 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:35:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:35:00,058 INFO L93 Difference]: Finished difference Result 19519 states and 25894 transitions. [2021-10-16 02:35:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2021-10-16 02:35:00,058 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 18.25) internal successors, (438), 24 states have internal predecessors, (438), 0 states have call successors, (0), 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 145 [2021-10-16 02:35:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:35:00,086 INFO L225 Difference]: With dead ends: 19519 [2021-10-16 02:35:00,086 INFO L226 Difference]: Without dead ends: 16884 [2021-10-16 02:35:00,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 881 SyntacticMatches, 2 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43879 ImplicationChecksByTransitivity, 10230.9ms TimeCoverageRelationStatistics Valid=13853, Invalid=86319, Unknown=0, NotChecked=0, Total=100172 [2021-10-16 02:35:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16884 states. [2021-10-16 02:35:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16884 to 4042. [2021-10-16 02:35:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4042 states, 4037 states have (on average 1.2700024770869458) internal successors, (5127), 4041 states have internal predecessors, (5127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:35:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4042 states to 4042 states and 5127 transitions. [2021-10-16 02:35:01,190 INFO L78 Accepts]: Start accepts. Automaton has 4042 states and 5127 transitions. Word has length 145 [2021-10-16 02:35:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:35:01,191 INFO L470 AbstractCegarLoop]: Abstraction has 4042 states and 5127 transitions. [2021-10-16 02:35:01,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.25) internal successors, (438), 24 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:35:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4042 states and 5127 transitions. [2021-10-16 02:35:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-10-16 02:35:01,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:35:01,197 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:35:01,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-16 02:35:01,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-16 02:35:01,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2021-10-16 02:35:01,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:35:01,811 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:35:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:35:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash -572580853, now seen corresponding path program 1 times [2021-10-16 02:35:01,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:35:01,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067513332] [2021-10-16 02:35:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:35:01,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:35:01,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:35:01,813 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:35:01,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-16 02:35:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:35:05,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:35:05,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:35:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:35:05,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:35:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:35:05,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:35:05,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067513332] [2021-10-16 02:35:05,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067513332] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:35:05,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:35:05,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-16 02:35:05,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964368449] [2021-10-16 02:35:05,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:35:05,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:35:05,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:35:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:35:05,614 INFO L87 Difference]: Start difference. First operand 4042 states and 5127 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 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) [2021-10-16 02:35:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:35:07,820 INFO L93 Difference]: Finished difference Result 13405 states and 17454 transitions. [2021-10-16 02:35:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:35:07,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 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 149 [2021-10-16 02:35:07,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:35:07,831 INFO L225 Difference]: With dead ends: 13405 [2021-10-16 02:35:07,831 INFO L226 Difference]: Without dead ends: 9792 [2021-10-16 02:35:07,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:35:07,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2021-10-16 02:35:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 4066. [2021-10-16 02:35:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4066 states, 4061 states have (on average 1.2681605515882788) internal successors, (5150), 4065 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:35:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 5150 transitions. [2021-10-16 02:35:08,801 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 5150 transitions. Word has length 149 [2021-10-16 02:35:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:35:08,801 INFO L470 AbstractCegarLoop]: Abstraction has 4066 states and 5150 transitions. [2021-10-16 02:35:08,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 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) [2021-10-16 02:35:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 5150 transitions. [2021-10-16 02:35:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-10-16 02:35:08,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:35:08,806 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:35:08,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-16 02:35:09,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:35:09,007 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 02:35:09,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:35:09,007 INFO L82 PathProgramCache]: Analyzing trace with hash -146521997, now seen corresponding path program 1 times [2021-10-16 02:35:09,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:35:09,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317606329] [2021-10-16 02:35:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:35:09,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:35:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:35:09,010 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:35:09,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-16 02:35:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:35:12,610 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:35:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:35:13,640 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:35:13,640 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:35:13,641 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:35:13,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-16 02:35:13,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:35:13,859 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:35:14,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:35:14 BoogieIcfgContainer [2021-10-16 02:35:14,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:35:14,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:35:14,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:35:14,161 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:35:14,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:32:37" (3/4) ... [2021-10-16 02:35:14,164 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:35:14,457 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:35:14,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:35:14,460 INFO L168 Benchmark]: Toolchain (without parser) took 159067.37 ms. Allocated memory was 50.3 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 23.9 MB in the beginning and 893.4 MB in the end (delta: -869.5 MB). Peak memory consumption was 324.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:14,460 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.3 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:35:14,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.57 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 23.7 MB in the beginning and 39.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:14,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.54 ms. Allocated memory is still 62.9 MB. Free memory was 39.9 MB in the beginning and 35.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:14,464 INFO L168 Benchmark]: Boogie Preprocessor took 104.78 ms. Allocated memory is still 62.9 MB. Free memory was 35.3 MB in the beginning and 31.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:14,469 INFO L168 Benchmark]: RCFGBuilder took 1441.71 ms. Allocated memory is still 62.9 MB. Free memory was 31.5 MB in the beginning and 24.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:14,469 INFO L168 Benchmark]: TraceAbstraction took 156538.41 ms. Allocated memory was 62.9 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 40.7 MB in the beginning and 941.6 MB in the end (delta: -900.9 MB). Peak memory consumption was 279.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:14,470 INFO L168 Benchmark]: Witness Printer took 298.11 ms. Allocated memory is still 1.2 GB. Free memory was 941.6 MB in the beginning and 893.4 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:14,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.3 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 553.57 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 23.7 MB in the beginning and 39.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.54 ms. Allocated memory is still 62.9 MB. Free memory was 39.9 MB in the beginning and 35.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.78 ms. Allocated memory is still 62.9 MB. Free memory was 35.3 MB in the beginning and 31.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1441.71 ms. Allocated memory is still 62.9 MB. Free memory was 31.5 MB in the beginning and 24.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 156538.41 ms. Allocated memory was 62.9 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 40.7 MB in the beginning and 941.6 MB in the end (delta: -900.9 MB). Peak memory consumption was 279.0 MB. Max. memory is 16.1 GB. * Witness Printer took 298.11 ms. Allocated memory is still 1.2 GB. Free memory was 941.6 MB in the beginning and 893.4 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 618]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] msg_t nomsg = (msg_t )-1; [L25] port_t cs1 ; [L26] int8_t cs1_old ; [L27] int8_t cs1_new ; [L28] port_t cs2 ; [L29] int8_t cs2_old ; [L30] int8_t cs2_new ; [L31] port_t s1s2 ; [L32] int8_t s1s2_old ; [L33] int8_t s1s2_new ; [L34] port_t s1s1 ; [L35] int8_t s1s1_old ; [L36] int8_t s1s1_new ; [L37] port_t s2s1 ; [L38] int8_t s2s1_old ; [L39] int8_t s2s1_new ; [L40] port_t s2s2 ; [L41] int8_t s2s2_old ; [L42] int8_t s2s2_new ; [L43] port_t s1p ; [L44] int8_t s1p_old ; [L45] int8_t s1p_new ; [L46] port_t s2p ; [L47] int8_t s2p_old ; [L48] int8_t s2p_new ; [L51] _Bool side1Failed ; [L52] _Bool side2Failed ; [L53] msg_t side1_written ; [L54] msg_t side2_written ; [L60] static _Bool side1Failed_History_0 ; [L61] static _Bool side1Failed_History_1 ; [L62] static _Bool side1Failed_History_2 ; [L63] static _Bool side2Failed_History_0 ; [L64] static _Bool side2Failed_History_1 ; [L65] static _Bool side2Failed_History_2 ; [L66] static int8_t active_side_History_0 ; [L67] static int8_t active_side_History_1 ; [L68] static int8_t active_side_History_2 ; [L69] static msg_t manual_selection_History_0 ; [L70] static msg_t manual_selection_History_1 ; [L71] static msg_t manual_selection_History_2 ; VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=0, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L542] int c1 ; [L543] int i2 ; [L546] c1 = 0 [L547] side1Failed = __VERIFIER_nondet_bool() [L548] side2Failed = __VERIFIER_nondet_bool() [L549] side1_written = __VERIFIER_nondet_char() [L550] side2_written = __VERIFIER_nondet_char() [L551] side1Failed_History_0 = __VERIFIER_nondet_bool() [L552] side1Failed_History_1 = __VERIFIER_nondet_bool() [L553] side1Failed_History_2 = __VERIFIER_nondet_bool() [L554] side2Failed_History_0 = __VERIFIER_nondet_bool() [L555] side2Failed_History_1 = __VERIFIER_nondet_bool() [L556] side2Failed_History_2 = __VERIFIER_nondet_bool() [L557] active_side_History_0 = __VERIFIER_nondet_char() [L558] active_side_History_1 = __VERIFIER_nondet_char() [L559] active_side_History_2 = __VERIFIER_nondet_char() [L560] manual_selection_History_0 = __VERIFIER_nondet_char() [L561] manual_selection_History_1 = __VERIFIER_nondet_char() [L562] manual_selection_History_2 = __VERIFIER_nondet_char() [L197] COND FALSE !((int )side1Failed_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L200] COND FALSE !((int )side2Failed_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L203] COND FALSE !((int )active_side_History_0 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L206] COND FALSE !((int )manual_selection_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L209] COND FALSE !((int )side1Failed_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L212] COND FALSE !((int )side2Failed_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L215] COND FALSE !((int )active_side_History_1 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L218] COND FALSE !((int )manual_selection_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L221] COND FALSE !((int )side1Failed_History_2 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L224] COND FALSE !((int )side2Failed_History_2 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L227] COND FALSE !((int )active_side_History_2 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L230] COND FALSE !((int )manual_selection_History_2 != 0) [L233] return (1); VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L563] i2 = init() [L58] COND FALSE !(!cond) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L565] cs1_old = nomsg [L566] cs1_new = nomsg [L567] cs2_old = nomsg [L568] cs2_new = nomsg [L569] s1s2_old = nomsg [L570] s1s2_new = nomsg [L571] s1s1_old = nomsg [L572] s1s1_new = nomsg [L573] s2s1_old = nomsg [L574] s2s1_new = nomsg [L575] s2s2_old = nomsg [L576] s2s2_new = nomsg [L577] s1p_old = nomsg [L578] s1p_new = nomsg [L579] s2p_old = nomsg [L580] s2p_new = nomsg [L581] i2 = 0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L582] COND TRUE 1 [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L277] COND TRUE \read(side1Failed) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] EXPR nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] s1s1_new = nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new [L279] EXPR nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L279] s1s2_new = nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new [L280] EXPR nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L280] s1p_new = nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new [L281] side1_written = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L334] COND FALSE !(\read(side2Failed)) [L341] side1 = s1s2_old [L342] s1s2_old = nomsg [L343] side2 = s2s2_old [L344] s2s2_old = nomsg [L345] manual_selection = cs2_old [L346] cs2_old = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L347] COND TRUE (int )side1 == (int )side2 [L348] next_state = (int8_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L372] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L372] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L373] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L373] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L374] side2_written = next_state VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L394] COND FALSE !((int )side1 == 1) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L397] COND FALSE !((int )side2 == 1) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L400] COND FALSE !((int )side1 == 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L408] COND TRUE (int )side1 == (int )nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L409] COND FALSE !((int )side2 == 0) [L412] active_side = (int8_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L588] cs1_old = cs1_new [L589] cs1_new = nomsg [L590] cs2_old = cs2_new [L591] cs2_new = nomsg [L592] s1s2_old = s1s2_new [L593] s1s2_new = nomsg [L594] s1s1_old = s1s1_new [L595] s1s1_new = nomsg [L596] s2s1_old = s2s1_new [L597] s2s1_new = nomsg [L598] s2s2_old = s2s2_new [L599] s2s2_new = nomsg [L600] s1p_old = s1p_new [L601] s1p_new = nomsg [L602] s2p_old = s2p_new [L603] s2p_new = nomsg [L423] int tmp ; [L424] msg_t tmp___0 ; [L425] _Bool tmp___1 ; [L426] _Bool tmp___2 ; [L427] _Bool tmp___3 ; [L428] _Bool tmp___4 ; [L429] int8_t tmp___5 ; [L430] _Bool tmp___6 ; [L431] _Bool tmp___7 ; [L432] _Bool tmp___8 ; [L433] int8_t tmp___9 ; [L434] _Bool tmp___10 ; [L435] _Bool tmp___11 ; [L436] _Bool tmp___12 ; [L437] msg_t tmp___13 ; [L438] _Bool tmp___14 ; [L439] _Bool tmp___15 ; [L440] _Bool tmp___16 ; [L441] _Bool tmp___17 ; [L442] int8_t tmp___18 ; [L443] int8_t tmp___19 ; [L444] int8_t tmp___20 ; VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L447] COND FALSE !(! side1Failed) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L450] COND TRUE ! side2Failed [L451] tmp = 1 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L58] COND FALSE !(!cond) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L178] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L456] tmp___0 = read_manual_selection_history((unsigned char)1) [L457] COND TRUE ! tmp___0 [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L458] tmp___1 = read_side1_failed_history((unsigned char)1) [L459] COND TRUE ! tmp___1 [L88] COND TRUE (int )index == 0 [L89] return (side1Failed_History_0); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L460] tmp___2 = read_side1_failed_history((unsigned char)0) [L461] COND FALSE !(! tmp___2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L486] tmp___7 = read_side1_failed_history((unsigned char)1) [L487] COND FALSE !(\read(tmp___7)) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L502] tmp___11 = read_side1_failed_history((unsigned char)1) [L503] COND TRUE ! tmp___11 [L118] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L504] tmp___12 = read_side2_failed_history((unsigned char)1) [L505] COND FALSE !(\read(tmp___12)) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L148] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L151] COND FALSE !((int )index == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L154] COND TRUE (int )index == 2 [L155] return (active_side_History_2); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L518] tmp___20 = read_active_side_history((unsigned char)2) [L519] COND FALSE !((int )tmp___20 > -2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L537] return (1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L604] c1 = check() [L616] COND FALSE !(! arg) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L582] COND TRUE 1 [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L277] COND TRUE \read(side1Failed) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] EXPR nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] s1s1_new = nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new [L279] EXPR nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L279] s1s2_new = nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new [L280] EXPR nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L280] s1p_new = nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new [L281] side1_written = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L334] COND FALSE !(\read(side2Failed)) [L341] side1 = s1s2_old [L342] s1s2_old = nomsg [L343] side2 = s2s2_old [L344] s2s2_old = nomsg [L345] manual_selection = cs2_old [L346] cs2_old = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L347] COND FALSE !((int )side1 == (int )side2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L350] COND TRUE (int )side1 == (int )nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L351] COND TRUE (int )side2 != (int )nomsg [L352] next_state = (int8_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L372] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L372] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L373] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L373] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L374] side2_written = next_state VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L394] COND FALSE !((int )side1 == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L397] COND FALSE !((int )side2 == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L400] COND FALSE !((int )side1 == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L408] COND TRUE (int )side1 == (int )nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L409] COND TRUE (int )side2 == 0 [L410] active_side = (int8_t )2 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L588] cs1_old = cs1_new [L589] cs1_new = nomsg [L590] cs2_old = cs2_new [L591] cs2_new = nomsg [L592] s1s2_old = s1s2_new [L593] s1s2_new = nomsg [L594] s1s1_old = s1s1_new [L595] s1s1_new = nomsg [L596] s2s1_old = s2s1_new [L597] s2s1_new = nomsg [L598] s2s2_old = s2s2_new [L599] s2s2_new = nomsg [L600] s1p_old = s1p_new [L601] s1p_new = nomsg [L602] s2p_old = s2p_new [L603] s2p_new = nomsg [L423] int tmp ; [L424] msg_t tmp___0 ; [L425] _Bool tmp___1 ; [L426] _Bool tmp___2 ; [L427] _Bool tmp___3 ; [L428] _Bool tmp___4 ; [L429] int8_t tmp___5 ; [L430] _Bool tmp___6 ; [L431] _Bool tmp___7 ; [L432] _Bool tmp___8 ; [L433] int8_t tmp___9 ; [L434] _Bool tmp___10 ; [L435] _Bool tmp___11 ; [L436] _Bool tmp___12 ; [L437] msg_t tmp___13 ; [L438] _Bool tmp___14 ; [L439] _Bool tmp___15 ; [L440] _Bool tmp___16 ; [L441] _Bool tmp___17 ; [L442] int8_t tmp___18 ; [L443] int8_t tmp___19 ; [L444] int8_t tmp___20 ; VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L447] COND FALSE !(! side1Failed) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L450] COND TRUE ! side2Failed [L451] tmp = 1 VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L58] COND FALSE !(!cond) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L178] COND FALSE !((int )index == 0) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L456] tmp___0 = read_manual_selection_history((unsigned char)1) [L457] COND FALSE !(! tmp___0) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L486] tmp___7 = read_side1_failed_history((unsigned char)1) [L487] COND TRUE \read(tmp___7) [L118] COND FALSE !((int )index == 0) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L488] tmp___8 = read_side2_failed_history((unsigned char)1) [L489] COND TRUE ! tmp___8 [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L490] tmp___5 = read_active_side_history((unsigned char)0) [L491] COND FALSE !(! ((int )tmp___5 == 2)) [L118] COND TRUE (int )index == 0 [L119] return (side2Failed_History_0); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L494] tmp___6 = read_side2_failed_history((unsigned char)0) [L495] COND TRUE ! tmp___6 VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L496] COND TRUE ! ((int )side2_written == 1) [L497] return (0); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L604] c1 = check() [L616] COND TRUE ! arg VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L618] reach_error() VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 296 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 156141.2ms, OverallIterations: 38, TraceHistogramMax: 2, EmptinessCheckTime: 139.3ms, AutomataDifference: 39308.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16851 SDtfs, 53337 SDslu, 53922 SDs, 0 SdLazy, 10223 SolverSat, 808 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8229.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10044 GetRequests, 9299 SyntacticMatches, 42 SemanticMatches, 703 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46475 ImplicationChecksByTransitivity, 14420.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4066occurred in iteration=37, InterpolantAutomatonStates: 661, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7700.2ms AutomataMinimizationTime, 37 MinimizatonAttempts, 45924 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1658.1ms SsaConstructionTime, 9611.9ms SatisfiabilityAnalysisTime, 31306.7ms InterpolantComputationTime, 4920 NumberOfCodeBlocks, 4920 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 9444 ConstructedInterpolants, 0 QuantifiedInterpolants, 32053 SizeOfPredicates, 149 NumberOfNonLiveVariables, 14989 ConjunctsInSsa, 285 ConjunctsInUnsatCore, 96 InterpolantComputations, 64 PerfectInterpolantSequences, 1002/1432 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:35:14,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32179015-f50c-4d33-9080-1b4b5f808e6c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...