./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8 --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 fc7896e2fa777dc2e99796d148e825563a1ec0c0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8 --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 fc7896e2fa777dc2e99796d148e825563a1ec0c0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:38:51,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:38:51,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:38:51,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:38:51,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:38:51,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:38:51,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:38:51,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:38:51,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:38:51,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:38:51,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:38:51,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:38:51,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:38:51,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:38:51,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:38:51,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:38:51,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:38:51,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:38:51,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:38:51,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:38:51,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:38:51,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:38:51,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:38:51,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:38:51,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:38:51,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:38:51,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:38:51,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:38:51,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:38:51,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:38:51,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:38:51,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:38:51,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:38:51,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:38:51,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:38:51,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:38:51,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:38:51,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:38:51,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:38:51,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:38:51,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:38:51,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:38:51,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:38:51,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:38:51,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:38:51,778 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:38:51,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:38:51,779 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:38:51,779 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:38:51,779 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:38:51,779 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:38:51,780 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:38:51,781 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:38:51,782 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:38:51,782 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:38:51,783 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:38:51,783 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:38:51,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:38:51,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:38:51,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:38:51,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:38:51,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:38:51,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:38:51,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:38:51,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:38:51,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:38:51,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:38:51,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:38:51,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:38:51,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:38:51,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:38:51,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:38:51,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:51,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:38:51,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:38:51,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:38:51,791 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:38:51,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:38:51,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:38:51,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:38:51,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:38:51,793 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_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc7896e2fa777dc2e99796d148e825563a1ec0c0 [2021-10-13 07:38:52,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:38:52,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:38:52,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:38:52,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:38:52,203 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:38:52,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c [2021-10-13 07:38:52,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data/b6695535a/7beacb54039b403bba0df74fd46bf131/FLAG613da4901 [2021-10-13 07:38:52,976 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:38:52,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c [2021-10-13 07:38:52,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data/b6695535a/7beacb54039b403bba0df74fd46bf131/FLAG613da4901 [2021-10-13 07:38:53,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data/b6695535a/7beacb54039b403bba0df74fd46bf131 [2021-10-13 07:38:53,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:38:53,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:38:53,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:53,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:38:53,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:38:53,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e90e226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53, skipping insertion in model container [2021-10-13 07:38:53,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:38:53,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:38:53,662 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_1325fee7-6623-4da0-a243-08cabf252f96/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c[42909,42922] [2021-10-13 07:38:53,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:53,691 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:38:53,801 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_1325fee7-6623-4da0-a243-08cabf252f96/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c[42909,42922] [2021-10-13 07:38:53,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:53,841 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:38:53,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53 WrapperNode [2021-10-13 07:38:53,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:53,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:38:53,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:38:53,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:38:53,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:38:53,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:38:53,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:38:53,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:38:53,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:53,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:38:53,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:38:53,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:38:53,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:38:53,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (1/1) ... [2021-10-13 07:38:54,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:54,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:38:54,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:38:54,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:38:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:38:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:38:54,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:38:54,251 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:38:55,024 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:38:55,024 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:38:55,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:38:55,517 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 07:38:55,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:55 BoogieIcfgContainer [2021-10-13 07:38:55,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:38:55,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:38:55,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:38:55,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:38:55,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:38:53" (1/3) ... [2021-10-13 07:38:55,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b21ce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:55, skipping insertion in model container [2021-10-13 07:38:55,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:53" (2/3) ... [2021-10-13 07:38:55,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b21ce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:55, skipping insertion in model container [2021-10-13 07:38:55,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:55" (3/3) ... [2021-10-13 07:38:55,535 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-2.c [2021-10-13 07:38:55,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:38:55,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:38:55,649 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:38:55,660 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 [2021-10-13 07:38:55,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:38:55,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.7619047619047619) internal successors, (185), 106 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 07:38:55,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:55,691 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] [2021-10-13 07:38:55,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash 169464603, now seen corresponding path program 1 times [2021-10-13 07:38:55,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:55,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248234604] [2021-10-13 07:38:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:55,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:56,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:56,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248234604] [2021-10-13 07:38:56,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248234604] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:56,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:56,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:38:56,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606763514] [2021-10-13 07:38:56,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:56,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:56,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:56,075 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.7619047619047619) internal successors, (185), 106 states have internal predecessors, (185), 0 states have call successors, (0), 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 13.333333333333334) internal successors, (40), 2 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) [2021-10-13 07:38:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:56,380 INFO L93 Difference]: Finished difference Result 233 states and 402 transitions. [2021-10-13 07:38:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:56,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 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 [2021-10-13 07:38:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:56,401 INFO L225 Difference]: With dead ends: 233 [2021-10-13 07:38:56,402 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 07:38:56,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 07:38:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-10-13 07:38:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4789915966386555) internal successors, (176), 119 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2021-10-13 07:38:56,492 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 40 [2021-10-13 07:38:56,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:56,493 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2021-10-13 07:38:56,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 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) [2021-10-13 07:38:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2021-10-13 07:38:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 07:38:56,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:56,501 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:56,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:38:56,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:56,506 INFO L82 PathProgramCache]: Analyzing trace with hash 697545516, now seen corresponding path program 1 times [2021-10-13 07:38:56,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:56,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839340397] [2021-10-13 07:38:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:56,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:56,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:56,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839340397] [2021-10-13 07:38:56,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839340397] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:56,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:56,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:38:56,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334732179] [2021-10-13 07:38:56,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:56,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:56,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:56,680 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:56,889 INFO L93 Difference]: Finished difference Result 259 states and 386 transitions. [2021-10-13 07:38:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:56,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2021-10-13 07:38:56,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:56,900 INFO L225 Difference]: With dead ends: 259 [2021-10-13 07:38:56,900 INFO L226 Difference]: Without dead ends: 141 [2021-10-13 07:38:56,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-13 07:38:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-10-13 07:38:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.434782608695652) internal successors, (198), 138 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2021-10-13 07:38:56,929 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 54 [2021-10-13 07:38:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:56,929 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2021-10-13 07:38:56,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:56,930 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2021-10-13 07:38:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 07:38:56,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:56,946 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:38:56,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:38:56,947 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:56,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1352448424, now seen corresponding path program 1 times [2021-10-13 07:38:56,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:56,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091712010] [2021-10-13 07:38:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:56,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:38:57,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:57,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091712010] [2021-10-13 07:38:57,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091712010] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:57,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:57,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:38:57,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551769749] [2021-10-13 07:38:57,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:57,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:57,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:57,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:38:57,120 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:57,446 INFO L93 Difference]: Finished difference Result 321 states and 474 transitions. [2021-10-13 07:38:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:57,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-13 07:38:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:57,456 INFO L225 Difference]: With dead ends: 321 [2021-10-13 07:38:57,456 INFO L226 Difference]: Without dead ends: 184 [2021-10-13 07:38:57,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:38:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-13 07:38:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2021-10-13 07:38:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.3636363636363635) internal successors, (240), 176 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 240 transitions. [2021-10-13 07:38:57,495 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 240 transitions. Word has length 71 [2021-10-13 07:38:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:57,498 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 240 transitions. [2021-10-13 07:38:57,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 240 transitions. [2021-10-13 07:38:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-13 07:38:57,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:57,504 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:57,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:38:57,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:57,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1515800912, now seen corresponding path program 1 times [2021-10-13 07:38:57,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:57,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059143] [2021-10-13 07:38:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:57,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:38:57,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:57,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059143] [2021-10-13 07:38:57,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059143] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:57,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:57,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:38:57,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274914845] [2021-10-13 07:38:57,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:57,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:57,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:57,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:57,639 INFO L87 Difference]: Start difference. First operand 177 states and 240 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:57,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:57,814 INFO L93 Difference]: Finished difference Result 385 states and 536 transitions. [2021-10-13 07:38:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:57,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-10-13 07:38:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:57,818 INFO L225 Difference]: With dead ends: 385 [2021-10-13 07:38:57,819 INFO L226 Difference]: Without dead ends: 210 [2021-10-13 07:38:57,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:57,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-13 07:38:57,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 200. [2021-10-13 07:38:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.3366834170854272) internal successors, (266), 199 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 266 transitions. [2021-10-13 07:38:57,856 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 266 transitions. Word has length 91 [2021-10-13 07:38:57,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:57,857 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 266 transitions. [2021-10-13 07:38:57,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 266 transitions. [2021-10-13 07:38:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-13 07:38:57,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:57,860 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:57,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:38:57,861 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:57,861 INFO L82 PathProgramCache]: Analyzing trace with hash -478771745, now seen corresponding path program 1 times [2021-10-13 07:38:57,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:57,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800304941] [2021-10-13 07:38:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:57,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:58,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:58,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800304941] [2021-10-13 07:38:58,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800304941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:38:58,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617300628] [2021-10-13 07:38:58,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:58,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:58,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:58,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:38:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:58,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:38:58,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:58,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-13 07:38:59,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617300628] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:38:59,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:38:59,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 7 [2021-10-13 07:38:59,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945387121] [2021-10-13 07:38:59,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:59,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:59,425 INFO L87 Difference]: Start difference. First operand 200 states and 266 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:59,457 INFO L93 Difference]: Finished difference Result 398 states and 530 transitions. [2021-10-13 07:38:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:59,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 109 [2021-10-13 07:38:59,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:59,463 INFO L225 Difference]: With dead ends: 398 [2021-10-13 07:38:59,463 INFO L226 Difference]: Without dead ends: 396 [2021-10-13 07:38:59,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-13 07:38:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2021-10-13 07:38:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.3367088607594937) internal successors, (528), 395 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) [2021-10-13 07:38:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 528 transitions. [2021-10-13 07:38:59,486 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 528 transitions. Word has length 109 [2021-10-13 07:38:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:59,492 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 528 transitions. [2021-10-13 07:38:59,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 528 transitions. [2021-10-13 07:38:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-13 07:38:59,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:59,504 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:59,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:59,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:59,730 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:59,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:59,730 INFO L82 PathProgramCache]: Analyzing trace with hash -66815409, now seen corresponding path program 1 times [2021-10-13 07:38:59,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:59,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986538955] [2021-10-13 07:38:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:59,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 97 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:59,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:59,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986538955] [2021-10-13 07:38:59,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986538955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:38:59,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246115762] [2021-10-13 07:38:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:59,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:59,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:59,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:59,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:39:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:00,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:00,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-13 07:39:00,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-13 07:39:00,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246115762] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:00,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:39:00,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2021-10-13 07:39:00,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356082483] [2021-10-13 07:39:00,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:00,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:39:00,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:00,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:00,908 INFO L87 Difference]: Start difference. First operand 396 states and 528 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:01,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:01,253 INFO L93 Difference]: Finished difference Result 970 states and 1382 transitions. [2021-10-13 07:39:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:01,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-10-13 07:39:01,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:01,259 INFO L225 Difference]: With dead ends: 970 [2021-10-13 07:39:01,259 INFO L226 Difference]: Without dead ends: 548 [2021-10-13 07:39:01,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-10-13 07:39:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 546. [2021-10-13 07:39:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 1.379816513761468) internal successors, (752), 545 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 752 transitions. [2021-10-13 07:39:01,289 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 752 transitions. Word has length 148 [2021-10-13 07:39:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:01,290 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 752 transitions. [2021-10-13 07:39:01,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:01,291 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 752 transitions. [2021-10-13 07:39:01,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-13 07:39:01,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:01,295 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:01,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:01,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 07:39:01,504 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:01,504 INFO L82 PathProgramCache]: Analyzing trace with hash 465082910, now seen corresponding path program 1 times [2021-10-13 07:39:01,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:39:01,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750174120] [2021-10-13 07:39:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:01,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:39:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 172 proven. 94 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-13 07:39:01,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:39:01,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750174120] [2021-10-13 07:39:01,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750174120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:39:01,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161636293] [2021-10-13 07:39:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:01,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:39:01,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:39:01,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:39:01,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:39:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:01,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:39:01,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 172 proven. 94 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-13 07:39:02,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-10-13 07:39:03,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161636293] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:39:03,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:03,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 7 [2021-10-13 07:39:03,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196790006] [2021-10-13 07:39:03,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:03,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:39:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:03,020 INFO L87 Difference]: Start difference. First operand 546 states and 752 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 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) [2021-10-13 07:39:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:03,067 INFO L93 Difference]: Finished difference Result 1355 states and 1870 transitions. [2021-10-13 07:39:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:03,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 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 175 [2021-10-13 07:39:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:03,080 INFO L225 Difference]: With dead ends: 1355 [2021-10-13 07:39:03,081 INFO L226 Difference]: Without dead ends: 1082 [2021-10-13 07:39:03,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-10-13 07:39:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1080. [2021-10-13 07:39:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 1.3809082483781279) internal successors, (1490), 1079 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1490 transitions. [2021-10-13 07:39:03,130 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1490 transitions. Word has length 175 [2021-10-13 07:39:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:03,131 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 1490 transitions. [2021-10-13 07:39:03,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 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) [2021-10-13 07:39:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1490 transitions. [2021-10-13 07:39:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-10-13 07:39:03,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:03,138 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:03,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:03,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:39:03,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:03,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:03,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1677409008, now seen corresponding path program 1 times [2021-10-13 07:39:03,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:39:03,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568901999] [2021-10-13 07:39:03,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:03,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:39:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-10-13 07:39:03,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:39:03,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568901999] [2021-10-13 07:39:03,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568901999] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:03,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:03,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:39:03,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333346684] [2021-10-13 07:39:03,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:03,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:39:03,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:03,466 INFO L87 Difference]: Start difference. First operand 1080 states and 1490 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:03,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:03,697 INFO L93 Difference]: Finished difference Result 2326 states and 3290 transitions. [2021-10-13 07:39:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:03,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2021-10-13 07:39:03,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:03,708 INFO L225 Difference]: With dead ends: 2326 [2021-10-13 07:39:03,708 INFO L226 Difference]: Without dead ends: 1248 [2021-10-13 07:39:03,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-10-13 07:39:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1236. [2021-10-13 07:39:03,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.3522267206477734) internal successors, (1670), 1235 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1670 transitions. [2021-10-13 07:39:03,763 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1670 transitions. Word has length 236 [2021-10-13 07:39:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:03,764 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1670 transitions. [2021-10-13 07:39:03,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1670 transitions. [2021-10-13 07:39:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-10-13 07:39:03,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:03,771 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:03,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:39:03,772 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:03,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:03,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1653176528, now seen corresponding path program 1 times [2021-10-13 07:39:03,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:39:03,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295332217] [2021-10-13 07:39:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:03,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:39:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-10-13 07:39:03,851 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:39:03,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295332217] [2021-10-13 07:39:03,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295332217] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:03,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:03,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:39:03,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333192187] [2021-10-13 07:39:03,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:03,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:39:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:03,855 INFO L87 Difference]: Start difference. First operand 1236 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2021-10-13 07:39:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:04,064 INFO L93 Difference]: Finished difference Result 2602 states and 3562 transitions. [2021-10-13 07:39:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 242 [2021-10-13 07:39:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:04,076 INFO L225 Difference]: With dead ends: 2602 [2021-10-13 07:39:04,076 INFO L226 Difference]: Without dead ends: 1368 [2021-10-13 07:39:04,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2021-10-13 07:39:04,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1336. [2021-10-13 07:39:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 1.3348314606741574) internal successors, (1782), 1335 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1782 transitions. [2021-10-13 07:39:04,134 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1782 transitions. Word has length 242 [2021-10-13 07:39:04,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:04,135 INFO L470 AbstractCegarLoop]: Abstraction has 1336 states and 1782 transitions. [2021-10-13 07:39:04,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2021-10-13 07:39:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1782 transitions. [2021-10-13 07:39:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-10-13 07:39:04,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:04,142 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:04,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:39:04,143 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:04,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:04,143 INFO L82 PathProgramCache]: Analyzing trace with hash -257164302, now seen corresponding path program 1 times [2021-10-13 07:39:04,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:39:04,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242925439] [2021-10-13 07:39:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:04,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:39:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-10-13 07:39:04,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:39:04,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242925439] [2021-10-13 07:39:04,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242925439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:04,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:04,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:39:04,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439488216] [2021-10-13 07:39:04,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:04,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:39:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:04,231 INFO L87 Difference]: Start difference. First operand 1336 states and 1782 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2021-10-13 07:39:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:04,458 INFO L93 Difference]: Finished difference Result 2696 states and 3594 transitions. [2021-10-13 07:39:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:04,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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 246 [2021-10-13 07:39:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:04,470 INFO L225 Difference]: With dead ends: 2696 [2021-10-13 07:39:04,470 INFO L226 Difference]: Without dead ends: 1358 [2021-10-13 07:39:04,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-10-13 07:39:04,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1340. [2021-10-13 07:39:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 1.3248693054518297) internal successors, (1774), 1339 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1774 transitions. [2021-10-13 07:39:04,579 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1774 transitions. Word has length 246 [2021-10-13 07:39:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:04,580 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1774 transitions. [2021-10-13 07:39:04,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2021-10-13 07:39:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1774 transitions. [2021-10-13 07:39:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-10-13 07:39:04,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:04,590 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:04,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:39:04,591 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:04,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1429601602, now seen corresponding path program 1 times [2021-10-13 07:39:04,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:39:04,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392874777] [2021-10-13 07:39:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:04,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:39:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-13 07:39:04,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:39:04,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392874777] [2021-10-13 07:39:04,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392874777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:04,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:04,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:39:04,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179899841] [2021-10-13 07:39:04,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:04,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:39:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:04,703 INFO L87 Difference]: Start difference. First operand 1340 states and 1774 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:04,894 INFO L93 Difference]: Finished difference Result 2794 states and 3742 transitions. [2021-10-13 07:39:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:04,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 264 [2021-10-13 07:39:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:04,906 INFO L225 Difference]: With dead ends: 2794 [2021-10-13 07:39:04,906 INFO L226 Difference]: Without dead ends: 1456 [2021-10-13 07:39:04,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-10-13 07:39:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1448. [2021-10-13 07:39:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 1.308914996544575) internal successors, (1894), 1447 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1894 transitions. [2021-10-13 07:39:04,970 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1894 transitions. Word has length 264 [2021-10-13 07:39:04,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:04,970 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 1894 transitions. [2021-10-13 07:39:04,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1894 transitions. [2021-10-13 07:39:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-10-13 07:39:04,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:04,979 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:39:04,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:39:04,980 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:04,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:04,981 INFO L82 PathProgramCache]: Analyzing trace with hash 823139630, now seen corresponding path program 1 times [2021-10-13 07:39:04,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:39:04,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462817738] [2021-10-13 07:39:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:04,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:39:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 710 proven. 25 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-10-13 07:39:05,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:39:05,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462817738] [2021-10-13 07:39:05,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462817738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:39:05,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344121866] [2021-10-13 07:39:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:05,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:39:05,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:39:05,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:39:05,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:39:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:05,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:05,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 710 proven. 25 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-10-13 07:39:06,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 710 proven. 25 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-10-13 07:39:07,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344121866] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:07,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1302194761] [2021-10-13 07:39:07,279 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2021-10-13 07:39:07,279 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:39:07,285 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:39:07,292 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:39:07,292 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:39:23,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,232 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:39:23,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:39:23,238 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:39:23,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:39:23,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 362 [2021-10-13 07:39:23,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,426 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:39:23,427 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 [2021-10-13 07:39:23,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:39:23,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:39:23,438 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:39:23,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,544 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:39:23,544 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 [2021-10-13 07:39:23,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:39:23,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:39:23,557 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:39:23,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:39:23,662 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:39:23,663 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 [2021-10-13 07:39:23,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:39:23,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:39:23,670 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:39:23,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:39:23,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:23,924 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.1 percent of original size [2021-10-13 07:39:23,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 951 [2021-10-13 07:39:23,949 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:39:23,949 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1017, output treesize:951 [2021-10-13 07:39:23,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:24,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:39:24,163 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_21| 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) [2021-10-13 07:39:24,168 INFO L168 Benchmark]: Toolchain (without parser) took 30949.08 ms. Allocated memory was 88.1 MB in the beginning and 5.5 GB in the end (delta: 5.4 GB). Free memory was 50.5 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 825.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:24,168 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 67.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:39:24,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.43 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 50.3 MB in the beginning and 87.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:24,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.74 ms. Allocated memory is still 115.3 MB. Free memory was 87.1 MB in the beginning and 84.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:24,169 INFO L168 Benchmark]: Boogie Preprocessor took 52.24 ms. Allocated memory is still 115.3 MB. Free memory was 84.5 MB in the beginning and 82.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:24,170 INFO L168 Benchmark]: RCFGBuilder took 1530.79 ms. Allocated memory is still 115.3 MB. Free memory was 82.4 MB in the beginning and 33.5 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:24,170 INFO L168 Benchmark]: TraceAbstraction took 28642.95 ms. Allocated memory was 115.3 MB in the beginning and 5.5 GB in the end (delta: 5.4 GB). Free memory was 32.5 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 779.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:24,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 67.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 621.43 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 50.3 MB in the beginning and 87.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.74 ms. Allocated memory is still 115.3 MB. Free memory was 87.1 MB in the beginning and 84.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.24 ms. Allocated memory is still 115.3 MB. Free memory was 84.5 MB in the beginning and 82.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1530.79 ms. Allocated memory is still 115.3 MB. Free memory was 82.4 MB in the beginning and 33.5 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28642.95 ms. Allocated memory was 115.3 MB in the beginning and 5.5 GB in the end (delta: 5.4 GB). Free memory was 32.5 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 779.1 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_21| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_21|: 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. [2021-10-13 07:39:24,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:39:26,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:39:26,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:39:26,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:39:26,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:39:26,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:39:26,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:39:26,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:39:26,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:39:26,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:39:26,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:39:26,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:39:26,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:39:26,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:39:26,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:39:26,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:39:26,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:39:26,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:39:26,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:39:26,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:39:26,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:39:26,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:39:26,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:39:26,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:39:26,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:39:26,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:39:26,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:39:26,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:39:26,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:39:26,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:39:26,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:39:26,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:39:26,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:39:26,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:39:26,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:39:26,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:39:26,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:39:26,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:39:26,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:39:26,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:39:26,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:39:26,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:39:26,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:39:26,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:39:26,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:39:26,903 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:39:26,903 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:39:26,904 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:39:26,904 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:39:26,904 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:39:26,904 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:39:26,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:39:26,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:39:26,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:39:26,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:39:26,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:39:26,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:39:26,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:39:26,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:39:26,908 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:39:26,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:39:26,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:39:26,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:39:26,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:39:26,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:39:26,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:39:26,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:39:26,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:39:26,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:39:26,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:39:26,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:39:26,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:39:26,912 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:39:26,912 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:26,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:39:26,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:39:26,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:39:26,913 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_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc7896e2fa777dc2e99796d148e825563a1ec0c0 [2021-10-13 07:39:27,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:39:27,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:39:27,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:39:27,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:39:27,393 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:39:27,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c [2021-10-13 07:39:27,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data/ed7225066/e039c013bec44753b528eca7e389a674/FLAG29fb84205 [2021-10-13 07:39:28,139 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:39:28,141 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c [2021-10-13 07:39:28,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data/ed7225066/e039c013bec44753b528eca7e389a674/FLAG29fb84205 [2021-10-13 07:39:28,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/data/ed7225066/e039c013bec44753b528eca7e389a674 [2021-10-13 07:39:28,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:39:28,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:39:28,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:39:28,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:39:28,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:39:28,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6d9eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28, skipping insertion in model container [2021-10-13 07:39:28,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:39:28,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:39:28,669 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_1325fee7-6623-4da0-a243-08cabf252f96/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c[42909,42922] [2021-10-13 07:39:28,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:39:28,688 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:39:28,794 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_1325fee7-6623-4da0-a243-08cabf252f96/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-2.c[42909,42922] [2021-10-13 07:39:28,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:39:28,812 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:39:28,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28 WrapperNode [2021-10-13 07:39:28,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:39:28,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:39:28,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:39:28,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:39:28,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:39:28,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:39:28,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:39:28,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:39:28,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:39:28,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:39:28,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:39:28,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:39:28,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (1/1) ... [2021-10-13 07:39:28,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:39:28,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:39:29,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:39:29,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:39:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:39:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:39:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:39:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:39:29,248 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:39:29,987 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:39:29,987 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:39:30,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:39:30,003 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 07:39:30,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:30 BoogieIcfgContainer [2021-10-13 07:39:30,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:39:30,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:39:30,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:39:30,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:39:30,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:39:28" (1/3) ... [2021-10-13 07:39:30,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5532ff64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:30, skipping insertion in model container [2021-10-13 07:39:30,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:28" (2/3) ... [2021-10-13 07:39:30,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5532ff64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:30, skipping insertion in model container [2021-10-13 07:39:30,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:30" (3/3) ... [2021-10-13 07:39:30,021 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-2.c [2021-10-13 07:39:30,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:39:30,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:39:30,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:39:30,114 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 [2021-10-13 07:39:30,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:39:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.7163120567375887) internal successors, (242), 142 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 07:39:30,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:30,153 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] [2021-10-13 07:39:30,154 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:30,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:30,162 INFO L82 PathProgramCache]: Analyzing trace with hash -947483280, now seen corresponding path program 1 times [2021-10-13 07:39:30,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:30,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168104503] [2021-10-13 07:39:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:30,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:30,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:30,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:30,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:39:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:30,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:39:30,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:39:30,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:39:31,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:31,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168104503] [2021-10-13 07:39:31,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168104503] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:31,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:31,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:31,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11198096] [2021-10-13 07:39:31,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:31,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:31,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:31,044 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.7163120567375887) internal successors, (242), 142 states have internal predecessors, (242), 0 states have call successors, (0), 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 15.0) 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) [2021-10-13 07:39:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:31,304 INFO L93 Difference]: Finished difference Result 306 states and 518 transitions. [2021-10-13 07:39:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) 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 [2021-10-13 07:39:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:31,321 INFO L225 Difference]: With dead ends: 306 [2021-10-13 07:39:31,321 INFO L226 Difference]: Without dead ends: 151 [2021-10-13 07:39:31,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-13 07:39:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2021-10-13 07:39:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.510204081632653) internal successors, (222), 147 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 222 transitions. [2021-10-13 07:39:31,382 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 222 transitions. Word has length 45 [2021-10-13 07:39:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:31,383 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 222 transitions. [2021-10-13 07:39:31,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) 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) [2021-10-13 07:39:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 222 transitions. [2021-10-13 07:39:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-13 07:39:31,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:31,388 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:31,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:31,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:31,602 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:31,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:31,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1257377812, now seen corresponding path program 1 times [2021-10-13 07:39:31,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:31,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924435649] [2021-10-13 07:39:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:31,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:31,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:31,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:31,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:39:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:31,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:31,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:39:31,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:39:32,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:32,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924435649] [2021-10-13 07:39:32,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924435649] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:32,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:32,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:32,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670387948] [2021-10-13 07:39:32,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:32,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:32,231 INFO L87 Difference]: Start difference. First operand 148 states and 222 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:32,415 INFO L93 Difference]: Finished difference Result 313 states and 476 transitions. [2021-10-13 07:39:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:32,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-13 07:39:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:32,419 INFO L225 Difference]: With dead ends: 313 [2021-10-13 07:39:32,419 INFO L226 Difference]: Without dead ends: 173 [2021-10-13 07:39:32,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-13 07:39:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2021-10-13 07:39:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.4761904761904763) internal successors, (248), 168 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 248 transitions. [2021-10-13 07:39:32,436 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 248 transitions. Word has length 61 [2021-10-13 07:39:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:32,437 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 248 transitions. [2021-10-13 07:39:32,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 248 transitions. [2021-10-13 07:39:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-13 07:39:32,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:32,451 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:39:32,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:32,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:32,670 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:32,671 INFO L82 PathProgramCache]: Analyzing trace with hash 490136674, now seen corresponding path program 1 times [2021-10-13 07:39:32,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:32,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698699605] [2021-10-13 07:39:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:32,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:32,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:32,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:32,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:39:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:32,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:32,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:39:33,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:39:33,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:33,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698699605] [2021-10-13 07:39:33,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698699605] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:33,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:33,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:33,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618931825] [2021-10-13 07:39:33,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:33,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:33,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:33,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:33,303 INFO L87 Difference]: Start difference. First operand 169 states and 248 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:33,534 INFO L93 Difference]: Finished difference Result 376 states and 567 transitions. [2021-10-13 07:39:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2021-10-13 07:39:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:33,538 INFO L225 Difference]: With dead ends: 376 [2021-10-13 07:39:33,538 INFO L226 Difference]: Without dead ends: 215 [2021-10-13 07:39:33,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:33,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-13 07:39:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2021-10-13 07:39:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4047619047619047) internal successors, (295), 210 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 295 transitions. [2021-10-13 07:39:33,556 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 295 transitions. Word has length 82 [2021-10-13 07:39:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:33,557 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 295 transitions. [2021-10-13 07:39:33,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 295 transitions. [2021-10-13 07:39:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-13 07:39:33,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:33,561 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:39:33,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:33,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:33,774 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:33,775 INFO L82 PathProgramCache]: Analyzing trace with hash -407256604, now seen corresponding path program 1 times [2021-10-13 07:39:33,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:33,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049192332] [2021-10-13 07:39:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:33,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:33,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:33,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:33,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:39:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:33,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:33,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:39:34,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:39:34,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:34,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049192332] [2021-10-13 07:39:34,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049192332] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:34,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:34,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:34,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501046217] [2021-10-13 07:39:34,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:34,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:34,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:34,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:34,453 INFO L87 Difference]: Start difference. First operand 211 states and 295 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:34,622 INFO L93 Difference]: Finished difference Result 441 states and 625 transitions. [2021-10-13 07:39:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2021-10-13 07:39:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:34,625 INFO L225 Difference]: With dead ends: 441 [2021-10-13 07:39:34,625 INFO L226 Difference]: Without dead ends: 238 [2021-10-13 07:39:34,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-13 07:39:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2021-10-13 07:39:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.386266094420601) internal successors, (323), 233 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 323 transitions. [2021-10-13 07:39:34,644 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 323 transitions. Word has length 82 [2021-10-13 07:39:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:34,647 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 323 transitions. [2021-10-13 07:39:34,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 323 transitions. [2021-10-13 07:39:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 07:39:34,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:34,654 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-10-13 07:39:34,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:39:34,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:34,873 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:34,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:34,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1150892934, now seen corresponding path program 1 times [2021-10-13 07:39:34,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:34,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038441308] [2021-10-13 07:39:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:34,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:34,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:34,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:34,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:39:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:35,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:35,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:39:35,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:39:35,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:35,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038441308] [2021-10-13 07:39:35,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038441308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:35,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:35,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:35,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935677968] [2021-10-13 07:39:35,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:35,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:35,639 INFO L87 Difference]: Start difference. First operand 234 states and 323 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2021-10-13 07:39:35,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:35,791 INFO L93 Difference]: Finished difference Result 498 states and 701 transitions. [2021-10-13 07:39:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 103 [2021-10-13 07:39:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:35,800 INFO L225 Difference]: With dead ends: 498 [2021-10-13 07:39:35,800 INFO L226 Difference]: Without dead ends: 272 [2021-10-13 07:39:35,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-13 07:39:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 259. [2021-10-13 07:39:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.3682170542635659) internal successors, (353), 258 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) [2021-10-13 07:39:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 353 transitions. [2021-10-13 07:39:35,829 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 353 transitions. Word has length 103 [2021-10-13 07:39:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:35,830 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 353 transitions. [2021-10-13 07:39:35,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2021-10-13 07:39:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 353 transitions. [2021-10-13 07:39:35,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:39:35,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:35,833 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-10-13 07:39:35,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:36,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:36,047 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash -804010043, now seen corresponding path program 1 times [2021-10-13 07:39:36,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:36,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917910482] [2021-10-13 07:39:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:36,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:36,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:36,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:36,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:39:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:36,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:36,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:39:36,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:39:37,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:37,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917910482] [2021-10-13 07:39:37,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917910482] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:37,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:37,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:37,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304595019] [2021-10-13 07:39:37,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:37,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:37,063 INFO L87 Difference]: Start difference. First operand 259 states and 353 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:37,103 INFO L93 Difference]: Finished difference Result 757 states and 1032 transitions. [2021-10-13 07:39:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:37,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 122 [2021-10-13 07:39:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:37,108 INFO L225 Difference]: With dead ends: 757 [2021-10-13 07:39:37,108 INFO L226 Difference]: Without dead ends: 506 [2021-10-13 07:39:37,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:37,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-13 07:39:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-10-13 07:39:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.3564356435643565) internal successors, (685), 505 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 685 transitions. [2021-10-13 07:39:37,131 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 685 transitions. Word has length 122 [2021-10-13 07:39:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:37,132 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 685 transitions. [2021-10-13 07:39:37,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 685 transitions. [2021-10-13 07:39:37,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:39:37,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:37,135 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-10-13 07:39:37,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:37,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:37,354 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:37,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1245377799, now seen corresponding path program 1 times [2021-10-13 07:39:37,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:37,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986115408] [2021-10-13 07:39:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:37,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:37,357 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:37,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:39:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:37,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:37,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:39:38,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:39:38,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:38,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986115408] [2021-10-13 07:39:38,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986115408] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:38,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:38,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:39:38,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751618897] [2021-10-13 07:39:38,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:38,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:39:38,402 INFO L87 Difference]: Start difference. First operand 506 states and 685 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:38,487 INFO L93 Difference]: Finished difference Result 1498 states and 2033 transitions. [2021-10-13 07:39:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 122 [2021-10-13 07:39:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:38,495 INFO L225 Difference]: With dead ends: 1498 [2021-10-13 07:39:38,496 INFO L226 Difference]: Without dead ends: 1000 [2021-10-13 07:39:38,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:39:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-10-13 07:39:38,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 1000. [2021-10-13 07:39:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.3543543543543544) internal successors, (1353), 999 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1353 transitions. [2021-10-13 07:39:38,537 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1353 transitions. Word has length 122 [2021-10-13 07:39:38,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:38,539 INFO L470 AbstractCegarLoop]: Abstraction has 1000 states and 1353 transitions. [2021-10-13 07:39:38,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:38,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1353 transitions. [2021-10-13 07:39:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-10-13 07:39:38,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:38,547 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:38,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:38,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:38,761 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:38,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:38,762 INFO L82 PathProgramCache]: Analyzing trace with hash 479308973, now seen corresponding path program 1 times [2021-10-13 07:39:38,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:38,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274684351] [2021-10-13 07:39:38,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:38,763 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:38,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:38,766 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:38,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:39:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:39,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:39,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-13 07:39:39,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-13 07:39:39,888 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:39,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274684351] [2021-10-13 07:39:39,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274684351] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:39,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:39,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:39,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318131652] [2021-10-13 07:39:39,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:39,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:39,891 INFO L87 Difference]: Start difference. First operand 1000 states and 1353 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) [2021-10-13 07:39:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:39,934 INFO L93 Difference]: Finished difference Result 2016 states and 2724 transitions. [2021-10-13 07:39:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:39,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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 164 [2021-10-13 07:39:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:39,941 INFO L225 Difference]: With dead ends: 2016 [2021-10-13 07:39:39,941 INFO L226 Difference]: Without dead ends: 1024 [2021-10-13 07:39:39,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-13 07:39:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2021-10-13 07:39:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1023 states have (on average 1.3509286412512218) internal successors, (1382), 1023 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1382 transitions. [2021-10-13 07:39:39,979 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1382 transitions. Word has length 164 [2021-10-13 07:39:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:39,979 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1382 transitions. [2021-10-13 07:39:39,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) [2021-10-13 07:39:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1382 transitions. [2021-10-13 07:39:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-10-13 07:39:39,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:39,984 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:40,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:40,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:40,198 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:40,198 INFO L82 PathProgramCache]: Analyzing trace with hash -843869973, now seen corresponding path program 1 times [2021-10-13 07:39:40,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:40,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512760324] [2021-10-13 07:39:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:40,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:40,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:40,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:40,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:39:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:40,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:40,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-10-13 07:39:41,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-10-13 07:39:41,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:41,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512760324] [2021-10-13 07:39:41,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512760324] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:41,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:41,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:41,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474251777] [2021-10-13 07:39:41,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:41,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:41,485 INFO L87 Difference]: Start difference. First operand 1024 states and 1382 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2021-10-13 07:39:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:41,527 INFO L93 Difference]: Finished difference Result 2053 states and 2766 transitions. [2021-10-13 07:39:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:41,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 164 [2021-10-13 07:39:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:41,535 INFO L225 Difference]: With dead ends: 2053 [2021-10-13 07:39:41,535 INFO L226 Difference]: Without dead ends: 1037 [2021-10-13 07:39:41,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-10-13 07:39:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2021-10-13 07:39:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 1036 states have (on average 1.3465250965250966) internal successors, (1395), 1036 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1395 transitions. [2021-10-13 07:39:41,578 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1395 transitions. Word has length 164 [2021-10-13 07:39:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:41,579 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 1395 transitions. [2021-10-13 07:39:41,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2021-10-13 07:39:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1395 transitions. [2021-10-13 07:39:41,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-13 07:39:41,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:41,584 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:41,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:41,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:41,798 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:41,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:41,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1180278813, now seen corresponding path program 1 times [2021-10-13 07:39:41,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:41,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193388932] [2021-10-13 07:39:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:41,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:41,803 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:41,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:39:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:42,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:42,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-13 07:39:42,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-13 07:39:43,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:43,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193388932] [2021-10-13 07:39:43,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193388932] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:43,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:43,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:39:43,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730445648] [2021-10-13 07:39:43,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:43,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:39:43,318 INFO L87 Difference]: Start difference. First operand 1037 states and 1395 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:43,697 INFO L93 Difference]: Finished difference Result 2363 states and 3332 transitions. [2021-10-13 07:39:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 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 202 [2021-10-13 07:39:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:43,707 INFO L225 Difference]: With dead ends: 2363 [2021-10-13 07:39:43,708 INFO L226 Difference]: Without dead ends: 1347 [2021-10-13 07:39:43,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:39:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-10-13 07:39:43,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1315. [2021-10-13 07:39:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.3850837138508372) internal successors, (1820), 1314 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1820 transitions. [2021-10-13 07:39:43,762 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1820 transitions. Word has length 202 [2021-10-13 07:39:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:43,763 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 1820 transitions. [2021-10-13 07:39:43,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1820 transitions. [2021-10-13 07:39:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-10-13 07:39:43,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:43,770 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:43,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:43,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:43,986 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash -681286109, now seen corresponding path program 1 times [2021-10-13 07:39:43,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:43,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996661097] [2021-10-13 07:39:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:43,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:43,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:43,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:43,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:39:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:44,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:44,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-10-13 07:39:45,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-10-13 07:39:45,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:45,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996661097] [2021-10-13 07:39:45,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996661097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:45,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:45,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:45,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115799592] [2021-10-13 07:39:45,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:45,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:45,624 INFO L87 Difference]: Start difference. First operand 1315 states and 1820 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:45,817 INFO L93 Difference]: Finished difference Result 2733 states and 3847 transitions. [2021-10-13 07:39:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:45,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 246 [2021-10-13 07:39:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:45,828 INFO L225 Difference]: With dead ends: 2733 [2021-10-13 07:39:45,828 INFO L226 Difference]: Without dead ends: 1439 [2021-10-13 07:39:45,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-10-13 07:39:45,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1439. [2021-10-13 07:39:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 1.3657858136300418) internal successors, (1964), 1438 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1964 transitions. [2021-10-13 07:39:45,879 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1964 transitions. Word has length 246 [2021-10-13 07:39:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:45,880 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 1964 transitions. [2021-10-13 07:39:45,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1964 transitions. [2021-10-13 07:39:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-10-13 07:39:45,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:45,888 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 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] [2021-10-13 07:39:45,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:46,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:46,103 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash -11691205, now seen corresponding path program 1 times [2021-10-13 07:39:46,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:46,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294882227] [2021-10-13 07:39:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:46,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:46,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:46,105 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:46,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:39:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:46,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:46,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-10-13 07:39:47,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:48,147 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-10-13 07:39:48,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:48,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294882227] [2021-10-13 07:39:48,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294882227] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:48,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:48,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:39:48,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191139410] [2021-10-13 07:39:48,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:48,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:39:48,150 INFO L87 Difference]: Start difference. First operand 1439 states and 1964 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:48,466 INFO L93 Difference]: Finished difference Result 3215 states and 4563 transitions. [2021-10-13 07:39:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:48,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 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 303 [2021-10-13 07:39:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:48,479 INFO L225 Difference]: With dead ends: 3215 [2021-10-13 07:39:48,479 INFO L226 Difference]: Without dead ends: 1618 [2021-10-13 07:39:48,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:39:48,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2021-10-13 07:39:48,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1600. [2021-10-13 07:39:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1599 states have (on average 1.41213258286429) internal successors, (2258), 1599 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2258 transitions. [2021-10-13 07:39:48,539 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2258 transitions. Word has length 303 [2021-10-13 07:39:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:48,559 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 2258 transitions. [2021-10-13 07:39:48,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:48,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2258 transitions. [2021-10-13 07:39:48,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-10-13 07:39:48,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:48,569 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 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] [2021-10-13 07:39:48,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:48,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:48,785 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:48,785 INFO L82 PathProgramCache]: Analyzing trace with hash -6370378, now seen corresponding path program 1 times [2021-10-13 07:39:48,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:48,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845255013] [2021-10-13 07:39:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:48,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:48,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:48,787 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:48,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:39:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:49,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:49,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-10-13 07:39:50,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-10-13 07:39:51,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:51,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845255013] [2021-10-13 07:39:51,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845255013] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:51,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:51,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:51,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488374822] [2021-10-13 07:39:51,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:51,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:51,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:51,469 INFO L87 Difference]: Start difference. First operand 1600 states and 2258 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:51,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:51,539 INFO L93 Difference]: Finished difference Result 4615 states and 6556 transitions. [2021-10-13 07:39:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:51,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2021-10-13 07:39:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:51,554 INFO L225 Difference]: With dead ends: 4615 [2021-10-13 07:39:51,554 INFO L226 Difference]: Without dead ends: 2300 [2021-10-13 07:39:51,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-10-13 07:39:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2222. [2021-10-13 07:39:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 1.40027014858172) internal successors, (3110), 2221 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3110 transitions. [2021-10-13 07:39:51,638 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3110 transitions. Word has length 343 [2021-10-13 07:39:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:51,639 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 3110 transitions. [2021-10-13 07:39:51,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3110 transitions. [2021-10-13 07:39:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-10-13 07:39:51,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:51,652 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:51,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:51,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:51,872 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:51,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2132745897, now seen corresponding path program 1 times [2021-10-13 07:39:51,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:51,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691002743] [2021-10-13 07:39:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:51,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:51,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:51,877 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:51,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:39:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:52,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:52,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2021-10-13 07:39:53,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2021-10-13 07:39:54,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:54,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691002743] [2021-10-13 07:39:54,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691002743] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:54,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:54,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:54,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838133837] [2021-10-13 07:39:54,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:54,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:54,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:54,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:54,585 INFO L87 Difference]: Start difference. First operand 2222 states and 3110 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:54,757 INFO L93 Difference]: Finished difference Result 4633 states and 6567 transitions. [2021-10-13 07:39:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:54,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 390 [2021-10-13 07:39:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:54,771 INFO L225 Difference]: With dead ends: 4633 [2021-10-13 07:39:54,772 INFO L226 Difference]: Without dead ends: 2432 [2021-10-13 07:39:54,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-10-13 07:39:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2384. [2021-10-13 07:39:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2384 states, 2383 states have (on average 1.3856483424255142) internal successors, (3302), 2383 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 3302 transitions. [2021-10-13 07:39:54,871 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 3302 transitions. Word has length 390 [2021-10-13 07:39:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:54,872 INFO L470 AbstractCegarLoop]: Abstraction has 2384 states and 3302 transitions. [2021-10-13 07:39:54,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 3302 transitions. [2021-10-13 07:39:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-10-13 07:39:54,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:54,882 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 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] [2021-10-13 07:39:54,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:55,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:55,106 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1177338231, now seen corresponding path program 1 times [2021-10-13 07:39:55,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:55,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482517648] [2021-10-13 07:39:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:55,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:55,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:55,108 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:55,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:39:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:56,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:56,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 864 proven. 0 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2021-10-13 07:39:57,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 864 proven. 0 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2021-10-13 07:39:58,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:58,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482517648] [2021-10-13 07:39:58,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482517648] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:58,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:58,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:39:58,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389838554] [2021-10-13 07:39:58,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:58,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:58,040 INFO L87 Difference]: Start difference. First operand 2384 states and 3302 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:58,338 INFO L93 Difference]: Finished difference Result 4933 states and 6909 transitions. [2021-10-13 07:39:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:58,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 413 [2021-10-13 07:39:58,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:58,360 INFO L225 Difference]: With dead ends: 4933 [2021-10-13 07:39:58,360 INFO L226 Difference]: Without dead ends: 2570 [2021-10-13 07:39:58,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 823 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:39:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-10-13 07:39:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2558. [2021-10-13 07:39:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2557 states have (on average 1.3711380524051624) internal successors, (3506), 2557 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3506 transitions. [2021-10-13 07:39:58,445 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3506 transitions. Word has length 413 [2021-10-13 07:39:58,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:58,446 INFO L470 AbstractCegarLoop]: Abstraction has 2558 states and 3506 transitions. [2021-10-13 07:39:58,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:58,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3506 transitions. [2021-10-13 07:39:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-10-13 07:39:58,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:58,454 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:58,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:58,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:58,677 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:58,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1840493232, now seen corresponding path program 1 times [2021-10-13 07:39:58,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:58,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955156613] [2021-10-13 07:39:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:58,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:58,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:58,681 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:58,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:40:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:00,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:40:00,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 873 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2021-10-13 07:40:01,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 873 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2021-10-13 07:40:02,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:02,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955156613] [2021-10-13 07:40:02,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955156613] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:02,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:02,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 07:40:02,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046824345] [2021-10-13 07:40:02,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:40:02,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:40:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:40:02,147 INFO L87 Difference]: Start difference. First operand 2558 states and 3506 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:02,416 INFO L93 Difference]: Finished difference Result 12709 states and 17419 transitions. [2021-10-13 07:40:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:40:02,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 447 [2021-10-13 07:40:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:02,497 INFO L225 Difference]: With dead ends: 12709 [2021-10-13 07:40:02,498 INFO L226 Difference]: Without dead ends: 10172 [2021-10-13 07:40:02,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:40:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10172 states. [2021-10-13 07:40:02,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10172 to 5087. [2021-10-13 07:40:02,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5087 states, 5086 states have (on average 1.3700353912701533) internal successors, (6968), 5086 states have internal predecessors, (6968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5087 states to 5087 states and 6968 transitions. [2021-10-13 07:40:02,779 INFO L78 Accepts]: Start accepts. Automaton has 5087 states and 6968 transitions. Word has length 447 [2021-10-13 07:40:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:02,780 INFO L470 AbstractCegarLoop]: Abstraction has 5087 states and 6968 transitions. [2021-10-13 07:40:02,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5087 states and 6968 transitions. [2021-10-13 07:40:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-10-13 07:40:02,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:02,794 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:40:02,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:03,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:03,014 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:03,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1887476094, now seen corresponding path program 1 times [2021-10-13 07:40:03,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:03,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935775050] [2021-10-13 07:40:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:03,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:03,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:03,017 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:03,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:40:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:04,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:04,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1158 proven. 26 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-10-13 07:40:05,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1158 proven. 26 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-10-13 07:40:06,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:06,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935775050] [2021-10-13 07:40:06,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935775050] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:06,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [836022915] [2021-10-13 07:40:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:06,638 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:06,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:40:06,644 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:40:06,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 07:40:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:09,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:09,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2021-10-13 07:40:10,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2021-10-13 07:40:10,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [836022915] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:10,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:40:10,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-10-13 07:40:10,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960532539] [2021-10-13 07:40:10,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:10,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:40:10,868 INFO L87 Difference]: Start difference. First operand 5087 states and 6968 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:10,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:10,950 INFO L93 Difference]: Finished difference Result 5115 states and 7000 transitions. [2021-10-13 07:40:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:10,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 448 [2021-10-13 07:40:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:10,990 INFO L225 Difference]: With dead ends: 5115 [2021-10-13 07:40:10,991 INFO L226 Difference]: Without dead ends: 3559 [2021-10-13 07:40:10,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1788 GetRequests, 1785 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:40:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2021-10-13 07:40:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3533. [2021-10-13 07:40:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 3532 states have (on average 1.3850509626274066) internal successors, (4892), 3532 states have internal predecessors, (4892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4892 transitions. [2021-10-13 07:40:11,137 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4892 transitions. Word has length 448 [2021-10-13 07:40:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:11,138 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4892 transitions. [2021-10-13 07:40:11,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4892 transitions. [2021-10-13 07:40:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-10-13 07:40:11,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:11,149 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:11,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:11,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:11,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:11,563 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:11,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:11,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1810575296, now seen corresponding path program 1 times [2021-10-13 07:40:11,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:11,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308177176] [2021-10-13 07:40:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:11,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:11,565 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:11,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:40:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:13,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:13,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1158 proven. 26 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-10-13 07:40:14,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1158 proven. 26 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-10-13 07:40:15,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:15,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308177176] [2021-10-13 07:40:15,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308177176] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:15,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1340503112] [2021-10-13 07:40:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:15,378 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:15,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:40:15,387 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:40:15,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-13 07:40:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:18,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:18,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1158 proven. 26 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-10-13 07:40:19,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1158 proven. 26 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-10-13 07:40:20,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1340503112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:20,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612746890] [2021-10-13 07:40:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:20,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:20,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:20,257 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:20,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 07:40:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:23,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:23,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1158 proven. 26 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-10-13 07:40:24,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1158 proven. 26 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-10-13 07:40:25,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612746890] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:25,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:40:25,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-13 07:40:25,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865940828] [2021-10-13 07:40:25,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:25,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:25,145 INFO L87 Difference]: Start difference. First operand 3533 states and 4892 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:25,522 INFO L93 Difference]: Finished difference Result 10533 states and 14538 transitions. [2021-10-13 07:40:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:40:25,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 448 [2021-10-13 07:40:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:25,541 INFO L225 Difference]: With dead ends: 10533 [2021-10-13 07:40:25,542 INFO L226 Difference]: Without dead ends: 7021 [2021-10-13 07:40:25,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2684 GetRequests, 2681 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:40:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7021 states. [2021-10-13 07:40:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7021 to 4805. [2021-10-13 07:40:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4805 states, 4804 states have (on average 1.414654454621149) internal successors, (6796), 4804 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 6796 transitions. [2021-10-13 07:40:25,758 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 6796 transitions. Word has length 448 [2021-10-13 07:40:25,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:25,759 INFO L470 AbstractCegarLoop]: Abstraction has 4805 states and 6796 transitions. [2021-10-13 07:40:25,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 6796 transitions. [2021-10-13 07:40:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-10-13 07:40:25,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:25,772 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:25,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:25,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:26,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:26,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:26,383 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:26,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:26,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1377360886, now seen corresponding path program 1 times [2021-10-13 07:40:26,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:26,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803657998] [2021-10-13 07:40:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:26,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:26,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:26,385 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:26,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:40:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:29,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:29,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 1229 proven. 0 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2021-10-13 07:40:30,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 1229 proven. 0 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2021-10-13 07:40:31,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:31,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803657998] [2021-10-13 07:40:31,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803657998] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:31,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:31,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:40:31,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533785686] [2021-10-13 07:40:31,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:31,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:31,009 INFO L87 Difference]: Start difference. First operand 4805 states and 6796 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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) [2021-10-13 07:40:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:31,268 INFO L93 Difference]: Finished difference Result 9935 states and 14157 transitions. [2021-10-13 07:40:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:31,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 478 [2021-10-13 07:40:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:31,282 INFO L225 Difference]: With dead ends: 9935 [2021-10-13 07:40:31,283 INFO L226 Difference]: Without dead ends: 5151 [2021-10-13 07:40:31,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:31,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2021-10-13 07:40:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 4965. [2021-10-13 07:40:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4965 states, 4964 states have (on average 1.4093473005640613) internal successors, (6996), 4964 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4965 states to 4965 states and 6996 transitions. [2021-10-13 07:40:31,593 INFO L78 Accepts]: Start accepts. Automaton has 4965 states and 6996 transitions. Word has length 478 [2021-10-13 07:40:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:31,594 INFO L470 AbstractCegarLoop]: Abstraction has 4965 states and 6996 transitions. [2021-10-13 07:40:31,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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) [2021-10-13 07:40:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4965 states and 6996 transitions. [2021-10-13 07:40:31,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-10-13 07:40:31,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:31,638 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:31,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:31,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:31,839 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:31,839 INFO L82 PathProgramCache]: Analyzing trace with hash 512749114, now seen corresponding path program 1 times [2021-10-13 07:40:31,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:31,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262849266] [2021-10-13 07:40:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:31,840 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:31,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:31,841 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:31,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:40:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:34,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:34,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 1321 proven. 0 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2021-10-13 07:40:35,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 1321 proven. 0 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2021-10-13 07:40:36,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:36,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262849266] [2021-10-13 07:40:36,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262849266] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:36,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:36,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:40:36,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780735228] [2021-10-13 07:40:36,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:36,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:36,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:36,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:36,561 INFO L87 Difference]: Start difference. First operand 4965 states and 6996 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) [2021-10-13 07:40:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:36,798 INFO L93 Difference]: Finished difference Result 10485 states and 15007 transitions. [2021-10-13 07:40:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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 479 [2021-10-13 07:40:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:36,812 INFO L225 Difference]: With dead ends: 10485 [2021-10-13 07:40:36,812 INFO L226 Difference]: Without dead ends: 5541 [2021-10-13 07:40:36,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5541 states. [2021-10-13 07:40:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5541 to 5509. [2021-10-13 07:40:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5509 states, 5508 states have (on average 1.383442265795207) internal successors, (7620), 5508 states have internal predecessors, (7620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5509 states to 5509 states and 7620 transitions. [2021-10-13 07:40:36,992 INFO L78 Accepts]: Start accepts. Automaton has 5509 states and 7620 transitions. Word has length 479 [2021-10-13 07:40:36,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:36,993 INFO L470 AbstractCegarLoop]: Abstraction has 5509 states and 7620 transitions. [2021-10-13 07:40:36,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) [2021-10-13 07:40:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5509 states and 7620 transitions. [2021-10-13 07:40:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2021-10-13 07:40:37,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:37,014 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 8, 7, 7, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:37,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:37,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:37,239 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:37,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1812297568, now seen corresponding path program 1 times [2021-10-13 07:40:37,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:37,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23798472] [2021-10-13 07:40:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:37,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:37,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:37,242 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:37,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:40:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:40,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:40,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2715 backedges. 1557 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2021-10-13 07:40:41,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2715 backedges. 1557 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2021-10-13 07:40:42,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:42,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23798472] [2021-10-13 07:40:42,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23798472] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:42,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:42,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:40:42,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443011682] [2021-10-13 07:40:42,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:42,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:42,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:42,238 INFO L87 Difference]: Start difference. First operand 5509 states and 7620 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:42,516 INFO L93 Difference]: Finished difference Result 11605 states and 16319 transitions. [2021-10-13 07:40:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 510 [2021-10-13 07:40:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:42,532 INFO L225 Difference]: With dead ends: 11605 [2021-10-13 07:40:42,532 INFO L226 Difference]: Without dead ends: 6117 [2021-10-13 07:40:42,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:42,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6117 states. [2021-10-13 07:40:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6117 to 6085. [2021-10-13 07:40:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 6084 states have (on average 1.3602892833662064) internal successors, (8276), 6084 states have internal predecessors, (8276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 8276 transitions. [2021-10-13 07:40:42,717 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 8276 transitions. Word has length 510 [2021-10-13 07:40:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:42,718 INFO L470 AbstractCegarLoop]: Abstraction has 6085 states and 8276 transitions. [2021-10-13 07:40:42,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 8276 transitions. [2021-10-13 07:40:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2021-10-13 07:40:42,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:42,731 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 9, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:42,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:42,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:42,947 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:42,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:42,947 INFO L82 PathProgramCache]: Analyzing trace with hash -624796129, now seen corresponding path program 1 times [2021-10-13 07:40:42,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:42,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970553847] [2021-10-13 07:40:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:42,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:42,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:42,949 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:42,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 07:40:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:46,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:46,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 1805 proven. 0 refuted. 0 times theorem prover too weak. 1317 trivial. 0 not checked. [2021-10-13 07:40:47,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 1805 proven. 0 refuted. 0 times theorem prover too weak. 1317 trivial. 0 not checked. [2021-10-13 07:40:48,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:48,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970553847] [2021-10-13 07:40:48,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970553847] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:48,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:48,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:40:48,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063441171] [2021-10-13 07:40:48,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:48,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:48,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:48,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:48,569 INFO L87 Difference]: Start difference. First operand 6085 states and 8276 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:48,767 INFO L93 Difference]: Finished difference Result 11249 states and 15093 transitions. [2021-10-13 07:40:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:48,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 543 [2021-10-13 07:40:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:48,782 INFO L225 Difference]: With dead ends: 11249 [2021-10-13 07:40:48,782 INFO L226 Difference]: Without dead ends: 5185 [2021-10-13 07:40:48,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1083 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5185 states. [2021-10-13 07:40:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5185 to 4475. [2021-10-13 07:40:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4475 states, 4474 states have (on average 1.2619579794367457) internal successors, (5646), 4474 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 5646 transitions. [2021-10-13 07:40:48,937 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 5646 transitions. Word has length 543 [2021-10-13 07:40:48,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:48,938 INFO L470 AbstractCegarLoop]: Abstraction has 4475 states and 5646 transitions. [2021-10-13 07:40:48,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 5646 transitions. [2021-10-13 07:40:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-10-13 07:40:48,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:48,952 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 10, 9, 9, 8, 8, 7, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:40:48,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:49,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:49,166 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:49,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:49,166 INFO L82 PathProgramCache]: Analyzing trace with hash 533851243, now seen corresponding path program 1 times [2021-10-13 07:40:49,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:49,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024209437] [2021-10-13 07:40:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:49,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:49,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:49,168 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:49,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:40:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:52,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:52,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 2006 proven. 26 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2021-10-13 07:40:53,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 2006 proven. 26 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2021-10-13 07:40:54,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:54,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024209437] [2021-10-13 07:40:54,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024209437] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:54,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1069210810] [2021-10-13 07:40:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:54,905 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:54,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:40:54,905 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:40:54,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-13 07:40:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:59,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:41:00,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 2006 proven. 26 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2021-10-13 07:41:01,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 2006 proven. 26 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2021-10-13 07:41:02,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1069210810] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:02,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990401009] [2021-10-13 07:41:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:02,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:02,439 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:41:02,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 07:41:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:07,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:41:07,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 2006 proven. 26 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2021-10-13 07:41:08,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 2006 proven. 26 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2021-10-13 07:41:09,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990401009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:09,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:41:09,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:41:09,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403311888] [2021-10-13 07:41:09,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:41:09,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:41:09,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:41:09,275 INFO L87 Difference]: Start difference. First operand 4475 states and 5646 transitions. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:09,706 INFO L93 Difference]: Finished difference Result 5815 states and 7298 transitions. [2021-10-13 07:41:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:41:09,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 0 states have call successors, (0), 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 581 [2021-10-13 07:41:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:09,708 INFO L225 Difference]: With dead ends: 5815 [2021-10-13 07:41:09,708 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:41:09,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3486 GetRequests, 3479 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:41:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:41:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:41:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:41:09,714 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 581 [2021-10-13 07:41:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:09,715 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:41:09,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:41:09,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:41:09,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:09,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:09,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:10,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:10,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:10,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:41:10,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:10,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:11,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:11,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:11,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:11,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:14,144 INFO L857 garLoopResultBuilder]: For program point L498(lines 498 500) no Hoare annotation was computed. [2021-10-13 07:41:14,144 INFO L857 garLoopResultBuilder]: For program point L498-2(lines 209 548) no Hoare annotation was computed. [2021-10-13 07:41:14,144 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 364) no Hoare annotation was computed. [2021-10-13 07:41:14,144 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2021-10-13 07:41:14,144 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 552) no Hoare annotation was computed. [2021-10-13 07:41:14,144 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 563) no Hoare annotation was computed. [2021-10-13 07:41:14,144 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 574) no Hoare annotation was computed. [2021-10-13 07:41:14,144 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 585) no Hoare annotation was computed. [2021-10-13 07:41:14,145 INFO L860 garLoopResultBuilder]: At program point L632(lines 623 634) the Hoare annotation is: true [2021-10-13 07:41:14,145 INFO L857 garLoopResultBuilder]: For program point L467(lines 467 469) no Hoare annotation was computed. [2021-10-13 07:41:14,145 INFO L857 garLoopResultBuilder]: For program point L236(lines 236 239) no Hoare annotation was computed. [2021-10-13 07:41:14,145 INFO L853 garLoopResultBuilder]: At program point L203(lines 199 553) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse2 .cse0 .cse1) (and .cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse1))) [2021-10-13 07:41:14,146 INFO L853 garLoopResultBuilder]: At program point L104(lines 103 585) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-13 07:41:14,146 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 310) no Hoare annotation was computed. [2021-10-13 07:41:14,146 INFO L857 garLoopResultBuilder]: For program point L303-2(lines 303 310) no Hoare annotation was computed. [2021-10-13 07:41:14,146 INFO L857 garLoopResultBuilder]: For program point L205(lines 205 551) no Hoare annotation was computed. [2021-10-13 07:41:14,146 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 562) no Hoare annotation was computed. [2021-10-13 07:41:14,146 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 573) no Hoare annotation was computed. [2021-10-13 07:41:14,146 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 584) no Hoare annotation was computed. [2021-10-13 07:41:14,147 INFO L857 garLoopResultBuilder]: For program point L536(lines 536 542) no Hoare annotation was computed. [2021-10-13 07:41:14,147 INFO L857 garLoopResultBuilder]: For program point L536-1(lines 536 542) no Hoare annotation was computed. [2021-10-13 07:41:14,147 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 362) no Hoare annotation was computed. [2021-10-13 07:41:14,147 INFO L860 garLoopResultBuilder]: At program point L206(lines 205 551) the Hoare annotation is: true [2021-10-13 07:41:14,147 INFO L853 garLoopResultBuilder]: At program point L173(lines 169 563) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,147 INFO L853 garLoopResultBuilder]: At program point L140(lines 136 574) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse2))) [2021-10-13 07:41:14,148 INFO L857 garLoopResultBuilder]: For program point L273(lines 273 275) no Hoare annotation was computed. [2021-10-13 07:41:14,148 INFO L857 garLoopResultBuilder]: For program point L273-2(lines 209 548) no Hoare annotation was computed. [2021-10-13 07:41:14,148 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 309) no Hoare annotation was computed. [2021-10-13 07:41:14,148 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 252) no Hoare annotation was computed. [2021-10-13 07:41:14,148 INFO L860 garLoopResultBuilder]: At program point L208(lines 207 551) the Hoare annotation is: true [2021-10-13 07:41:14,148 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 561) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 572) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 583) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L860 garLoopResultBuilder]: At program point L605(lines 99 606) the Hoare annotation is: true [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L539(lines 539 541) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L507(lines 507 510) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L441(lines 441 443) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L342(lines 342 346) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L342-2(lines 342 346) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 246) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 408) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 560) no Hoare annotation was computed. [2021-10-13 07:41:14,149 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 571) no Hoare annotation was computed. [2021-10-13 07:41:14,150 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 582) no Hoare annotation was computed. [2021-10-13 07:41:14,150 INFO L857 garLoopResultBuilder]: For program point L476(lines 476 478) no Hoare annotation was computed. [2021-10-13 07:41:14,150 INFO L857 garLoopResultBuilder]: For program point L476-2(lines 209 548) no Hoare annotation was computed. [2021-10-13 07:41:14,150 INFO L857 garLoopResultBuilder]: For program point L377(lines 377 383) no Hoare annotation was computed. [2021-10-13 07:41:14,150 INFO L853 garLoopResultBuilder]: At program point L212(lines 106 584) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-13 07:41:14,150 INFO L853 garLoopResultBuilder]: At program point L179(lines 175 561) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,150 INFO L853 garLoopResultBuilder]: At program point L146(lines 142 572) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-13 07:41:14,150 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 453) no Hoare annotation was computed. [2021-10-13 07:41:14,151 INFO L857 garLoopResultBuilder]: For program point L610(lines 610 612) no Hoare annotation was computed. [2021-10-13 07:41:14,151 INFO L857 garLoopResultBuilder]: For program point L610-2(lines 610 612) no Hoare annotation was computed. [2021-10-13 07:41:14,151 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 559) no Hoare annotation was computed. [2021-10-13 07:41:14,151 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 570) no Hoare annotation was computed. [2021-10-13 07:41:14,151 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 581) no Hoare annotation was computed. [2021-10-13 07:41:14,151 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:41:14,151 INFO L860 garLoopResultBuilder]: At program point L613(lines 13 617) the Hoare annotation is: true [2021-10-13 07:41:14,152 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2021-10-13 07:41:14,152 INFO L857 garLoopResultBuilder]: For program point L217(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:41:14,152 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 558) no Hoare annotation was computed. [2021-10-13 07:41:14,152 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 569) no Hoare annotation was computed. [2021-10-13 07:41:14,152 INFO L857 garLoopResultBuilder]: For program point L217-2(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:41:14,152 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 580) no Hoare annotation was computed. [2021-10-13 07:41:14,152 INFO L857 garLoopResultBuilder]: For program point L515(lines 515 521) no Hoare annotation was computed. [2021-10-13 07:41:14,153 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 486) no Hoare annotation was computed. [2021-10-13 07:41:14,153 INFO L857 garLoopResultBuilder]: For program point L482-2(lines 482 486) no Hoare annotation was computed. [2021-10-13 07:41:14,153 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 358) no Hoare annotation was computed. [2021-10-13 07:41:14,153 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:41:14,153 INFO L853 garLoopResultBuilder]: At program point L185(lines 181 559) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,154 INFO L853 garLoopResultBuilder]: At program point L152(lines 148 570) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,154 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 88) no Hoare annotation was computed. [2021-10-13 07:41:14,154 INFO L857 garLoopResultBuilder]: For program point L86-2(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:41:14,154 INFO L853 garLoopResultBuilder]: At program point L549(lines 100 604) the Hoare annotation is: (let ((.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse0 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse4 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse7 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and .cse0 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 .cse2) (and .cse3 .cse2) (and .cse1 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and .cse4 .cse1 .cse5 .cse2) (and .cse0 .cse1 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and .cse1 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and .cse0 .cse1 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse1 .cse5) (and .cse0 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 .cse2) (and .cse6 .cse3) (and .cse1 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5 .cse2) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 .cse5 .cse2) (and .cse0 .cse1 .cse7 .cse2) (and .cse4 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 .cse2) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse6 .cse1 .cse7))) [2021-10-13 07:41:14,154 INFO L853 garLoopResultBuilder]: At program point L351(lines 326 369) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,155 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 420) no Hoare annotation was computed. [2021-10-13 07:41:14,155 INFO L853 garLoopResultBuilder]: At program point L385(lines 376 408) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,155 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 288) no Hoare annotation was computed. [2021-10-13 07:41:14,155 INFO L857 garLoopResultBuilder]: For program point L286-2(lines 209 548) no Hoare annotation was computed. [2021-10-13 07:41:14,155 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 557) no Hoare annotation was computed. [2021-10-13 07:41:14,156 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 568) no Hoare annotation was computed. [2021-10-13 07:41:14,156 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 579) no Hoare annotation was computed. [2021-10-13 07:41:14,156 INFO L857 garLoopResultBuilder]: For program point L518(lines 518 520) no Hoare annotation was computed. [2021-10-13 07:41:14,156 INFO L853 garLoopResultBuilder]: At program point L518-1(lines 209 548) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse2 .cse0 .cse1) (and .cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse1))) [2021-10-13 07:41:14,156 INFO L857 garLoopResultBuilder]: For program point L353(lines 353 355) no Hoare annotation was computed. [2021-10-13 07:41:14,156 INFO L857 garLoopResultBuilder]: For program point L320(lines 320 324) no Hoare annotation was computed. [2021-10-13 07:41:14,157 INFO L857 garLoopResultBuilder]: For program point L320-2(lines 209 548) no Hoare annotation was computed. [2021-10-13 07:41:14,157 INFO L853 garLoopResultBuilder]: At program point L122(lines 118 580) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-13 07:41:14,157 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 224) no Hoare annotation was computed. [2021-10-13 07:41:14,157 INFO L857 garLoopResultBuilder]: For program point L586(lines 586 602) no Hoare annotation was computed. [2021-10-13 07:41:14,157 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 406) no Hoare annotation was computed. [2021-10-13 07:41:14,157 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:41:14,157 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 556) no Hoare annotation was computed. [2021-10-13 07:41:14,158 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 567) no Hoare annotation was computed. [2021-10-13 07:41:14,158 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 578) no Hoare annotation was computed. [2021-10-13 07:41:14,158 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-13 07:41:14,158 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 74 616) no Hoare annotation was computed. [2021-10-13 07:41:14,158 INFO L857 garLoopResultBuilder]: For program point L620(line 620) no Hoare annotation was computed. [2021-10-13 07:41:14,158 INFO L857 garLoopResultBuilder]: For program point L587(lines 587 601) no Hoare annotation was computed. [2021-10-13 07:41:14,158 INFO L857 garLoopResultBuilder]: For program point L389(lines 389 395) no Hoare annotation was computed. [2021-10-13 07:41:14,159 INFO L853 garLoopResultBuilder]: At program point L191(lines 187 557) the Hoare annotation is: (or (and (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))))) [2021-10-13 07:41:14,159 INFO L853 garLoopResultBuilder]: At program point L158(lines 154 568) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,159 INFO L853 garLoopResultBuilder]: At program point L125(lines 124 578) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-13 07:41:14,159 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 94) no Hoare annotation was computed. [2021-10-13 07:41:14,159 INFO L857 garLoopResultBuilder]: For program point L588(lines 588 593) no Hoare annotation was computed. [2021-10-13 07:41:14,160 INFO L857 garLoopResultBuilder]: For program point L588-2(lines 587 601) no Hoare annotation was computed. [2021-10-13 07:41:14,160 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 260) no Hoare annotation was computed. [2021-10-13 07:41:14,160 INFO L857 garLoopResultBuilder]: For program point L292(lines 292 296) no Hoare annotation was computed. [2021-10-13 07:41:14,160 INFO L857 garLoopResultBuilder]: For program point L292-2(lines 292 296) no Hoare annotation was computed. [2021-10-13 07:41:14,160 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 555) no Hoare annotation was computed. [2021-10-13 07:41:14,160 INFO L857 garLoopResultBuilder]: For program point L160(lines 160 566) no Hoare annotation was computed. [2021-10-13 07:41:14,160 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 577) no Hoare annotation was computed. [2021-10-13 07:41:14,161 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:41:14,161 INFO L857 garLoopResultBuilder]: For program point L590(lines 590 592) no Hoare annotation was computed. [2021-10-13 07:41:14,161 INFO L857 garLoopResultBuilder]: For program point L458(lines 458 460) no Hoare annotation was computed. [2021-10-13 07:41:14,161 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 234) no Hoare annotation was computed. [2021-10-13 07:41:14,161 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 227 234) no Hoare annotation was computed. [2021-10-13 07:41:14,161 INFO L857 garLoopResultBuilder]: For program point L526(lines 526 530) no Hoare annotation was computed. [2021-10-13 07:41:14,161 INFO L857 garLoopResultBuilder]: For program point L493(lines 493 496) no Hoare annotation was computed. [2021-10-13 07:41:14,161 INFO L857 garLoopResultBuilder]: For program point L526-2(lines 526 530) no Hoare annotation was computed. [2021-10-13 07:41:14,162 INFO L857 garLoopResultBuilder]: For program point L427(lines 427 435) no Hoare annotation was computed. [2021-10-13 07:41:14,162 INFO L857 garLoopResultBuilder]: For program point L427-2(lines 427 435) no Hoare annotation was computed. [2021-10-13 07:41:14,162 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 232) no Hoare annotation was computed. [2021-10-13 07:41:14,162 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 554) no Hoare annotation was computed. [2021-10-13 07:41:14,162 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 565) no Hoare annotation was computed. [2021-10-13 07:41:14,162 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 576) no Hoare annotation was computed. [2021-10-13 07:41:14,162 INFO L857 garLoopResultBuilder]: For program point L329(lines 329 368) no Hoare annotation was computed. [2021-10-13 07:41:14,163 INFO L853 garLoopResultBuilder]: At program point L197(lines 193 555) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2) (and .cse0 .cse1 .cse3 .cse2))) [2021-10-13 07:41:14,163 INFO L853 garLoopResultBuilder]: At program point L164(lines 160 566) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,163 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:41:14,163 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 620) no Hoare annotation was computed. [2021-10-13 07:41:14,163 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 599) no Hoare annotation was computed. [2021-10-13 07:41:14,164 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 433) no Hoare annotation was computed. [2021-10-13 07:41:14,164 INFO L853 garLoopResultBuilder]: At program point L397(lines 388 406) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse2))) [2021-10-13 07:41:14,164 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 553) no Hoare annotation was computed. [2021-10-13 07:41:14,164 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 564) no Hoare annotation was computed. [2021-10-13 07:41:14,164 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 575) no Hoare annotation was computed. [2021-10-13 07:41:14,164 INFO L853 garLoopResultBuilder]: At program point L100-2(lines 100 604) the Hoare annotation is: (let ((.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse0 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse4 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse7 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and .cse0 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 .cse2) (and .cse3 .cse2) (and .cse1 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and .cse4 .cse1 .cse5 .cse2) (and .cse0 .cse1 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and .cse1 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and .cse0 .cse1 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse2) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse1 .cse5) (and .cse0 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 .cse2) (and .cse6 .cse3) (and .cse1 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5 .cse2) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 .cse5 .cse2) (and .cse0 .cse1 .cse7 .cse2) (and .cse4 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1 .cse2) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse6 .cse1 .cse7))) [2021-10-13 07:41:14,165 INFO L857 garLoopResultBuilder]: For program point L332(lines 332 367) no Hoare annotation was computed. [2021-10-13 07:41:14,165 INFO L857 garLoopResultBuilder]: For program point L332-1(lines 332 367) no Hoare annotation was computed. [2021-10-13 07:41:14,165 INFO L853 garLoopResultBuilder]: At program point L167(lines 166 564) the Hoare annotation is: (let ((.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and .cse0 .cse1 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse3 .cse1 .cse4) (and .cse1 .cse2 .cse4) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse3 .cse1))) [2021-10-13 07:41:14,165 INFO L853 garLoopResultBuilder]: At program point L134(lines 127 577) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse2))) [2021-10-13 07:41:14,165 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 07:41:14,170 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:41:14,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:41:14 BoogieIcfgContainer [2021-10-13 07:41:14,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:41:14,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:41:14,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:41:14,207 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:41:14,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:30" (3/4) ... [2021-10-13 07:41:14,210 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:41:14,228 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:41:14,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:41:14,230 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:41:14,232 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:41:14,319 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:41:14,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:41:14,321 INFO L168 Benchmark]: Toolchain (without parser) took 105956.35 ms. Allocated memory was 62.9 MB in the beginning and 627.0 MB in the end (delta: 564.1 MB). Free memory was 43.0 MB in the beginning and 290.8 MB in the end (delta: -247.8 MB). Peak memory consumption was 318.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:14,321 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 62.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:41:14,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.90 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 44.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:14,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.08 ms. Allocated memory is still 62.9 MB. Free memory was 43.8 MB in the beginning and 41.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:14,322 INFO L168 Benchmark]: Boogie Preprocessor took 64.13 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 39.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:14,323 INFO L168 Benchmark]: RCFGBuilder took 1052.37 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 38.9 MB in the beginning and 57.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:14,323 INFO L168 Benchmark]: TraceAbstraction took 104197.39 ms. Allocated memory was 90.2 MB in the beginning and 627.0 MB in the end (delta: 536.9 MB). Free memory was 56.4 MB in the beginning and 301.3 MB in the end (delta: -244.9 MB). Peak memory consumption was 471.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:14,324 INFO L168 Benchmark]: Witness Printer took 113.07 ms. Allocated memory is still 627.0 MB. Free memory was 301.3 MB in the beginning and 290.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:14,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 62.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 447.90 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 44.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.08 ms. Allocated memory is still 62.9 MB. Free memory was 43.8 MB in the beginning and 41.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.13 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 39.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1052.37 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 38.9 MB in the beginning and 57.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 104197.39 ms. Allocated memory was 90.2 MB in the beginning and 627.0 MB in the end (delta: 536.9 MB). Free memory was 56.4 MB in the beginning and 301.3 MB in the end (delta: -244.9 MB). Peak memory consumption was 471.5 MB. Max. memory is 16.1 GB. * Witness Printer took 113.07 ms. Allocated memory is still 627.0 MB. Free memory was 301.3 MB in the beginning and 290.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 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 - PositiveResult [Line: 620]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 143 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 104067.6ms, OverallIterations: 23, TraceHistogramMax: 18, EmptinessCheckTime: 237.9ms, AutomataDifference: 5258.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3803.2ms, InitialAbstractionConstructionTime: 18.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5102 SDtfs, 2951 SDslu, 4055 SDs, 0 SdLazy, 2486 SolverSat, 536 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2455.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18522 GetRequests, 18480 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 216.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6085occurred in iteration=21, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2087.3ms AutomataMinimizationTime, 23 MinimizatonAttempts, 8503 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 255 NumberOfFragments, 1319 HoareAnnotationTreeSize, 28 FomulaSimplifications, 13324 FormulaSimplificationTreeSizeReduction, 903.7ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 3381 FormulaSimplificationTreeSizeReductionInter, 2885.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 531.4ms SsaConstructionTime, 2680.3ms SatisfiabilityAnalysisTime, 40928.7ms InterpolantComputationTime, 9282 NumberOfCodeBlocks, 9282 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 18508 ConstructedInterpolants, 0 QuantifiedInterpolants, 24150 SizeOfPredicates, 12 NumberOfNonLiveVariables, 10858 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 56 InterpolantComputations, 42 PerfectInterpolantSequences, 79950/80314 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 326]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: (((8640bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) || (!(8672bv32 == s__state) && !(s__hit == 0bv32)) - InvariantResult [Line: 376]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((((((((((((((((3bv32 == s__state || (((8576bv32 == s__s3__tmp__next_state___0 && 8640bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (!(s__hit == 0bv32) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8560bv32 == s__state) && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || (((8496bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8544bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (3bv32 == blastFlag && !(s__hit == 0bv32))) || (((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8466bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || (8496bv32 == s__state && blastFlag == 1bv32)) || ((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: !(8672bv32 == s__state) && !(8640bv32 == s__state) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: (((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((!(8672bv32 == s__state) && blastFlag == 0bv32) && !(8640bv32 == s__state)) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && 8448bv32 == s__state) && !(s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((8448bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: (((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((!(8672bv32 == s__state) && blastFlag == 1bv32) && !(8640bv32 == s__state)) - InvariantResult [Line: 169]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 388]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 623]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: (((!(s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || ((3bv32 == blastFlag && !(s__hit == 0bv32)) && !(8640bv32 == s__state))) || (((3bv32 == blastFlag && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: (((!(s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || ((3bv32 == blastFlag && !(s__hit == 0bv32)) && !(8640bv32 == s__state))) || (((3bv32 == blastFlag && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((((((((((((((((3bv32 == s__state || (((8576bv32 == s__s3__tmp__next_state___0 && 8640bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (!(s__hit == 0bv32) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8560bv32 == s__state) && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || (((8496bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8544bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (3bv32 == blastFlag && !(s__hit == 0bv32))) || (((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8466bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (8464bv32 == s__state && blastFlag == 0bv32)) || ((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:41:14,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1325fee7-6623-4da0-a243-08cabf252f96/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...