./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI --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 8822f5291178e45ba1da62c4d4636880280d6cc4 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:40,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:40,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:40,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:40,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:40,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:40,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:40,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:40,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:40,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:40,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:40,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:40,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:40,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:40,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:40,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:40,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:40,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:40,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:40,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:40,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:40,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:40,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:40,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:40,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:40,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:40,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:40,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:40,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:40,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:40,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:40,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:40,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:40,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:40,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:40,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:40,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:40,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:40,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:40,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:40,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:40,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:40,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:40,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:40,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:40,826 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:40,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:40,826 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:40,826 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:40,827 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:40,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:40,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:40,828 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:40,829 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:40,829 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:40,830 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:40,830 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:40,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:40,831 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:40,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:40,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:40,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:40,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:40,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:40,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:40,833 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:40,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:40,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:40,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:40,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:40,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:40,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:40,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:40,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:40,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:40,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:40,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:40,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:40,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:40,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:40,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:40,839 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_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8822f5291178e45ba1da62c4d4636880280d6cc4 [2021-10-11 02:23:41,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:41,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:41,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:41,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:41,128 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:41,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c [2021-10-11 02:23:41,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/data/4629e18a3/9b51eb8edaa34d988e23faf2d39e5571/FLAG2b25c81ed [2021-10-11 02:23:41,669 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:41,670 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c [2021-10-11 02:23:41,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/data/4629e18a3/9b51eb8edaa34d988e23faf2d39e5571/FLAG2b25c81ed [2021-10-11 02:23:42,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/data/4629e18a3/9b51eb8edaa34d988e23faf2d39e5571 [2021-10-11 02:23:42,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:42,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:42,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:42,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:42,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:42,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfec9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42, skipping insertion in model container [2021-10-11 02:23:42,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:42,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:42,312 WARN L226 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_59abb381-6ca5-46a9-8c25-cc747d68d6d2/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c[49194,49207] [2021-10-11 02:23:42,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:42,329 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:42,417 WARN L226 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_59abb381-6ca5-46a9-8c25-cc747d68d6d2/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c[49194,49207] [2021-10-11 02:23:42,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:42,457 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:42,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42 WrapperNode [2021-10-11 02:23:42,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:42,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:42,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:42,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:42,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:42,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:42,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:42,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:42,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... [2021-10-11 02:23:42,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:42,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:42,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:42,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:42,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:42,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:42,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:42,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:42,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:42,948 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-11 02:23:43,666 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-11 02:23:43,667 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-11 02:23:44,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:44,114 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:23:44,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:44 BoogieIcfgContainer [2021-10-11 02:23:44,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:44,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:44,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:44,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:44,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:42" (1/3) ... [2021-10-11 02:23:44,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fd40ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:44, skipping insertion in model container [2021-10-11 02:23:44,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:42" (2/3) ... [2021-10-11 02:23:44,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fd40ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:44, skipping insertion in model container [2021-10-11 02:23:44,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:44" (3/3) ... [2021-10-11 02:23:44,125 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2021-10-11 02:23:44,140 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:44,143 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:44,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:44,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:44,181 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:44,181 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:44,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:44,181 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:44,182 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:44,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:44,182 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2021-10-11 02:23:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:23:44,206 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:44,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:44,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:44,213 INFO L82 PathProgramCache]: Analyzing trace with hash 53983942, now seen corresponding path program 1 times [2021-10-11 02:23:44,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:44,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293155612] [2021-10-11 02:23:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:44,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293155612] [2021-10-11 02:23:44,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:44,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:44,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066707138] [2021-10-11 02:23:44,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:44,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:44,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:44,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:44,457 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 3 states. [2021-10-11 02:23:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:44,698 INFO L93 Difference]: Finished difference Result 257 states and 449 transitions. [2021-10-11 02:23:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:44,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:23:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:44,717 INFO L225 Difference]: With dead ends: 257 [2021-10-11 02:23:44,717 INFO L226 Difference]: Without dead ends: 134 [2021-10-11 02:23:44,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-11 02:23:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-11 02:23:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-10-11 02:23:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 204 transitions. [2021-10-11 02:23:44,765 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 204 transitions. Word has length 21 [2021-10-11 02:23:44,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:44,766 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 204 transitions. [2021-10-11 02:23:44,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 204 transitions. [2021-10-11 02:23:44,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:23:44,767 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:44,768 INFO L422 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] [2021-10-11 02:23:44,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:44,768 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:44,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2017580179, now seen corresponding path program 1 times [2021-10-11 02:23:44,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:44,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400900261] [2021-10-11 02:23:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:44,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400900261] [2021-10-11 02:23:44,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:44,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:44,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467204304] [2021-10-11 02:23:44,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:44,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:44,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:44,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:44,833 INFO L87 Difference]: Start difference. First operand 134 states and 204 transitions. Second operand 3 states. [2021-10-11 02:23:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:44,983 INFO L93 Difference]: Finished difference Result 275 states and 417 transitions. [2021-10-11 02:23:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:44,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-10-11 02:23:44,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:44,986 INFO L225 Difference]: With dead ends: 275 [2021-10-11 02:23:44,986 INFO L226 Difference]: Without dead ends: 143 [2021-10-11 02:23:44,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-11 02:23:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 135. [2021-10-11 02:23:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-10-11 02:23:45,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 205 transitions. [2021-10-11 02:23:45,003 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 205 transitions. Word has length 23 [2021-10-11 02:23:45,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:45,003 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 205 transitions. [2021-10-11 02:23:45,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:45,004 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 205 transitions. [2021-10-11 02:23:45,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:23:45,005 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:45,005 INFO L422 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] [2021-10-11 02:23:45,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:45,006 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:45,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1217402172, now seen corresponding path program 1 times [2021-10-11 02:23:45,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:45,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553062999] [2021-10-11 02:23:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:45,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553062999] [2021-10-11 02:23:45,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:45,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:45,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800682899] [2021-10-11 02:23:45,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:45,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:45,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:45,073 INFO L87 Difference]: Start difference. First operand 135 states and 205 transitions. Second operand 3 states. [2021-10-11 02:23:45,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:45,239 INFO L93 Difference]: Finished difference Result 286 states and 435 transitions. [2021-10-11 02:23:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:45,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-10-11 02:23:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:45,244 INFO L225 Difference]: With dead ends: 286 [2021-10-11 02:23:45,244 INFO L226 Difference]: Without dead ends: 153 [2021-10-11 02:23:45,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:45,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-11 02:23:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-10-11 02:23:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-10-11 02:23:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 229 transitions. [2021-10-11 02:23:45,269 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 229 transitions. Word has length 23 [2021-10-11 02:23:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:45,270 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 229 transitions. [2021-10-11 02:23:45,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 229 transitions. [2021-10-11 02:23:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:23:45,272 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:45,272 INFO L422 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] [2021-10-11 02:23:45,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:23:45,272 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1384534531, now seen corresponding path program 1 times [2021-10-11 02:23:45,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:45,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277120982] [2021-10-11 02:23:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:45,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277120982] [2021-10-11 02:23:45,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:45,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:45,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501463418] [2021-10-11 02:23:45,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:45,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:45,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:45,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:45,323 INFO L87 Difference]: Start difference. First operand 151 states and 229 transitions. Second operand 3 states. [2021-10-11 02:23:45,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:45,466 INFO L93 Difference]: Finished difference Result 306 states and 468 transitions. [2021-10-11 02:23:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:45,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-10-11 02:23:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:45,469 INFO L225 Difference]: With dead ends: 306 [2021-10-11 02:23:45,469 INFO L226 Difference]: Without dead ends: 157 [2021-10-11 02:23:45,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-11 02:23:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-10-11 02:23:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-10-11 02:23:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 240 transitions. [2021-10-11 02:23:45,494 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 240 transitions. Word has length 23 [2021-10-11 02:23:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:45,494 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 240 transitions. [2021-10-11 02:23:45,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 240 transitions. [2021-10-11 02:23:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:23:45,499 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:45,499 INFO L422 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] [2021-10-11 02:23:45,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:23:45,499 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:45,502 INFO L82 PathProgramCache]: Analyzing trace with hash 499622890, now seen corresponding path program 1 times [2021-10-11 02:23:45,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:45,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565833825] [2021-10-11 02:23:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:45,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565833825] [2021-10-11 02:23:45,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:45,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:45,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498311026] [2021-10-11 02:23:45,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:45,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:45,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:45,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:45,581 INFO L87 Difference]: Start difference. First operand 157 states and 240 transitions. Second operand 3 states. [2021-10-11 02:23:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:45,747 INFO L93 Difference]: Finished difference Result 320 states and 487 transitions. [2021-10-11 02:23:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:45,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:23:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:45,749 INFO L225 Difference]: With dead ends: 320 [2021-10-11 02:23:45,749 INFO L226 Difference]: Without dead ends: 165 [2021-10-11 02:23:45,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:45,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-11 02:23:45,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-10-11 02:23:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-10-11 02:23:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 238 transitions. [2021-10-11 02:23:45,759 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 238 transitions. Word has length 24 [2021-10-11 02:23:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:45,759 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 238 transitions. [2021-10-11 02:23:45,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 238 transitions. [2021-10-11 02:23:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:23:45,760 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:45,760 INFO L422 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] [2021-10-11 02:23:45,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:23:45,761 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:45,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1910945529, now seen corresponding path program 1 times [2021-10-11 02:23:45,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:45,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367841268] [2021-10-11 02:23:45,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:45,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367841268] [2021-10-11 02:23:45,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:45,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:45,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290438835] [2021-10-11 02:23:45,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:45,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:45,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:45,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:45,815 INFO L87 Difference]: Start difference. First operand 157 states and 238 transitions. Second operand 3 states. [2021-10-11 02:23:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:45,982 INFO L93 Difference]: Finished difference Result 314 states and 476 transitions. [2021-10-11 02:23:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:45,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:23:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:45,983 INFO L225 Difference]: With dead ends: 314 [2021-10-11 02:23:45,984 INFO L226 Difference]: Without dead ends: 159 [2021-10-11 02:23:45,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-11 02:23:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2021-10-11 02:23:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-10-11 02:23:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 237 transitions. [2021-10-11 02:23:45,997 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 237 transitions. Word has length 24 [2021-10-11 02:23:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:45,998 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 237 transitions. [2021-10-11 02:23:45,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 237 transitions. [2021-10-11 02:23:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:23:45,999 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:45,999 INFO L422 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] [2021-10-11 02:23:45,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:23:45,999 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:46,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1296114642, now seen corresponding path program 1 times [2021-10-11 02:23:46,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:46,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300565889] [2021-10-11 02:23:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:46,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300565889] [2021-10-11 02:23:46,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:46,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:46,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151853211] [2021-10-11 02:23:46,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:46,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:46,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:46,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:46,052 INFO L87 Difference]: Start difference. First operand 157 states and 237 transitions. Second operand 3 states. [2021-10-11 02:23:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:46,187 INFO L93 Difference]: Finished difference Result 320 states and 481 transitions. [2021-10-11 02:23:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:46,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-10-11 02:23:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:46,189 INFO L225 Difference]: With dead ends: 320 [2021-10-11 02:23:46,189 INFO L226 Difference]: Without dead ends: 165 [2021-10-11 02:23:46,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-11 02:23:46,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-10-11 02:23:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-10-11 02:23:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 235 transitions. [2021-10-11 02:23:46,197 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 235 transitions. Word has length 25 [2021-10-11 02:23:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:46,198 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 235 transitions. [2021-10-11 02:23:46,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 235 transitions. [2021-10-11 02:23:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:23:46,199 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:46,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:46,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:23:46,199 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:46,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:46,200 INFO L82 PathProgramCache]: Analyzing trace with hash 290163119, now seen corresponding path program 1 times [2021-10-11 02:23:46,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:46,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97877277] [2021-10-11 02:23:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:46,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97877277] [2021-10-11 02:23:46,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:46,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:46,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539136005] [2021-10-11 02:23:46,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:46,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:46,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:46,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:46,231 INFO L87 Difference]: Start difference. First operand 157 states and 235 transitions. Second operand 3 states. [2021-10-11 02:23:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:46,378 INFO L93 Difference]: Finished difference Result 320 states and 477 transitions. [2021-10-11 02:23:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:46,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-10-11 02:23:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:46,380 INFO L225 Difference]: With dead ends: 320 [2021-10-11 02:23:46,380 INFO L226 Difference]: Without dead ends: 165 [2021-10-11 02:23:46,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-11 02:23:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-10-11 02:23:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-10-11 02:23:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 233 transitions. [2021-10-11 02:23:46,402 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 233 transitions. Word has length 26 [2021-10-11 02:23:46,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:46,402 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 233 transitions. [2021-10-11 02:23:46,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 233 transitions. [2021-10-11 02:23:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:23:46,403 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:46,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:46,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:23:46,404 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:46,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:46,405 INFO L82 PathProgramCache]: Analyzing trace with hash -927156919, now seen corresponding path program 1 times [2021-10-11 02:23:46,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:46,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704766247] [2021-10-11 02:23:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:46,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704766247] [2021-10-11 02:23:46,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:46,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:46,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704983259] [2021-10-11 02:23:46,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:46,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:46,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:46,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:46,494 INFO L87 Difference]: Start difference. First operand 157 states and 233 transitions. Second operand 4 states. [2021-10-11 02:23:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:46,772 INFO L93 Difference]: Finished difference Result 446 states and 659 transitions. [2021-10-11 02:23:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:46,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2021-10-11 02:23:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:46,775 INFO L225 Difference]: With dead ends: 446 [2021-10-11 02:23:46,775 INFO L226 Difference]: Without dead ends: 291 [2021-10-11 02:23:46,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-11 02:23:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 267. [2021-10-11 02:23:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-10-11 02:23:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 397 transitions. [2021-10-11 02:23:46,790 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 397 transitions. Word has length 26 [2021-10-11 02:23:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:46,791 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 397 transitions. [2021-10-11 02:23:46,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 397 transitions. [2021-10-11 02:23:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-11 02:23:46,792 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:46,792 INFO L422 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] [2021-10-11 02:23:46,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:23:46,793 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:46,793 INFO L82 PathProgramCache]: Analyzing trace with hash -552784611, now seen corresponding path program 1 times [2021-10-11 02:23:46,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:46,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582629449] [2021-10-11 02:23:46,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:46,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582629449] [2021-10-11 02:23:46,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:46,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:46,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811737241] [2021-10-11 02:23:46,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:46,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:46,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:46,839 INFO L87 Difference]: Start difference. First operand 267 states and 397 transitions. Second operand 3 states. [2021-10-11 02:23:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:47,068 INFO L93 Difference]: Finished difference Result 612 states and 929 transitions. [2021-10-11 02:23:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:47,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2021-10-11 02:23:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:47,072 INFO L225 Difference]: With dead ends: 612 [2021-10-11 02:23:47,072 INFO L226 Difference]: Without dead ends: 347 [2021-10-11 02:23:47,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-10-11 02:23:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 331. [2021-10-11 02:23:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2021-10-11 02:23:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 507 transitions. [2021-10-11 02:23:47,091 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 507 transitions. Word has length 39 [2021-10-11 02:23:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:47,091 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 507 transitions. [2021-10-11 02:23:47,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 507 transitions. [2021-10-11 02:23:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-11 02:23:47,095 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:47,095 INFO L422 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] [2021-10-11 02:23:47,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:23:47,096 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:47,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1888920597, now seen corresponding path program 1 times [2021-10-11 02:23:47,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:47,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703884215] [2021-10-11 02:23:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:47,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703884215] [2021-10-11 02:23:47,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:47,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:47,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864658083] [2021-10-11 02:23:47,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:47,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:47,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:47,156 INFO L87 Difference]: Start difference. First operand 331 states and 507 transitions. Second operand 3 states. [2021-10-11 02:23:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:47,354 INFO L93 Difference]: Finished difference Result 670 states and 1027 transitions. [2021-10-11 02:23:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:47,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-10-11 02:23:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:47,357 INFO L225 Difference]: With dead ends: 670 [2021-10-11 02:23:47,358 INFO L226 Difference]: Without dead ends: 341 [2021-10-11 02:23:47,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-11 02:23:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 332. [2021-10-11 02:23:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2021-10-11 02:23:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 507 transitions. [2021-10-11 02:23:47,385 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 507 transitions. Word has length 40 [2021-10-11 02:23:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:47,385 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 507 transitions. [2021-10-11 02:23:47,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 507 transitions. [2021-10-11 02:23:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-11 02:23:47,386 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:47,386 INFO L422 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] [2021-10-11 02:23:47,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:23:47,387 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:47,387 INFO L82 PathProgramCache]: Analyzing trace with hash 968251981, now seen corresponding path program 1 times [2021-10-11 02:23:47,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:47,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553432601] [2021-10-11 02:23:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:23:47,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553432601] [2021-10-11 02:23:47,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:47,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:47,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001747951] [2021-10-11 02:23:47,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:47,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:47,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:47,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:47,434 INFO L87 Difference]: Start difference. First operand 332 states and 507 transitions. Second operand 3 states. [2021-10-11 02:23:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:47,607 INFO L93 Difference]: Finished difference Result 710 states and 1087 transitions. [2021-10-11 02:23:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:47,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2021-10-11 02:23:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:47,610 INFO L225 Difference]: With dead ends: 710 [2021-10-11 02:23:47,610 INFO L226 Difference]: Without dead ends: 380 [2021-10-11 02:23:47,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:47,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-11 02:23:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 364. [2021-10-11 02:23:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2021-10-11 02:23:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 553 transitions. [2021-10-11 02:23:47,631 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 553 transitions. Word has length 49 [2021-10-11 02:23:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:47,631 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 553 transitions. [2021-10-11 02:23:47,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 553 transitions. [2021-10-11 02:23:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-11 02:23:47,633 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:47,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:47,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:23:47,634 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash -696687195, now seen corresponding path program 1 times [2021-10-11 02:23:47,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:47,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185662111] [2021-10-11 02:23:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:23:47,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185662111] [2021-10-11 02:23:47,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:47,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:47,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400680675] [2021-10-11 02:23:47,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:47,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:47,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:47,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:47,702 INFO L87 Difference]: Start difference. First operand 364 states and 553 transitions. Second operand 3 states. [2021-10-11 02:23:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:47,895 INFO L93 Difference]: Finished difference Result 791 states and 1210 transitions. [2021-10-11 02:23:47,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:47,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2021-10-11 02:23:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:47,898 INFO L225 Difference]: With dead ends: 791 [2021-10-11 02:23:47,898 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:23:47,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:23:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2021-10-11 02:23:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2021-10-11 02:23:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 649 transitions. [2021-10-11 02:23:47,930 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 649 transitions. Word has length 49 [2021-10-11 02:23:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:47,931 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 649 transitions. [2021-10-11 02:23:47,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 649 transitions. [2021-10-11 02:23:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-11 02:23:47,932 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:47,932 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:47,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:23:47,933 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash 164519838, now seen corresponding path program 1 times [2021-10-11 02:23:47,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:47,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487569649] [2021-10-11 02:23:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:23:47,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487569649] [2021-10-11 02:23:47,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:47,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:47,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517060327] [2021-10-11 02:23:47,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:47,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:47,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:47,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:47,968 INFO L87 Difference]: Start difference. First operand 427 states and 649 transitions. Second operand 3 states. [2021-10-11 02:23:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:48,157 INFO L93 Difference]: Finished difference Result 860 states and 1309 transitions. [2021-10-11 02:23:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:48,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2021-10-11 02:23:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:48,161 INFO L225 Difference]: With dead ends: 860 [2021-10-11 02:23:48,161 INFO L226 Difference]: Without dead ends: 435 [2021-10-11 02:23:48,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:48,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-10-11 02:23:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 427. [2021-10-11 02:23:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2021-10-11 02:23:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 645 transitions. [2021-10-11 02:23:48,185 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 645 transitions. Word has length 61 [2021-10-11 02:23:48,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:48,185 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 645 transitions. [2021-10-11 02:23:48,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 645 transitions. [2021-10-11 02:23:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-11 02:23:48,187 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:48,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:48,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:23:48,187 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:48,188 INFO L82 PathProgramCache]: Analyzing trace with hash 28655439, now seen corresponding path program 1 times [2021-10-11 02:23:48,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:48,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123182262] [2021-10-11 02:23:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:48,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123182262] [2021-10-11 02:23:48,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:48,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:48,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531278957] [2021-10-11 02:23:48,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:48,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:48,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:48,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:48,228 INFO L87 Difference]: Start difference. First operand 427 states and 645 transitions. Second operand 3 states. [2021-10-11 02:23:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:48,443 INFO L93 Difference]: Finished difference Result 897 states and 1354 transitions. [2021-10-11 02:23:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:48,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-10-11 02:23:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:48,447 INFO L225 Difference]: With dead ends: 897 [2021-10-11 02:23:48,447 INFO L226 Difference]: Without dead ends: 472 [2021-10-11 02:23:48,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-11 02:23:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 468. [2021-10-11 02:23:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2021-10-11 02:23:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 704 transitions. [2021-10-11 02:23:48,476 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 704 transitions. Word has length 72 [2021-10-11 02:23:48,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:48,477 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 704 transitions. [2021-10-11 02:23:48,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:48,477 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 704 transitions. [2021-10-11 02:23:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-11 02:23:48,479 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:48,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:48,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:23:48,480 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:48,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:48,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2086512311, now seen corresponding path program 1 times [2021-10-11 02:23:48,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:48,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103840280] [2021-10-11 02:23:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:48,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103840280] [2021-10-11 02:23:48,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:48,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:48,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124778128] [2021-10-11 02:23:48,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:48,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:48,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:48,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:48,548 INFO L87 Difference]: Start difference. First operand 468 states and 704 transitions. Second operand 3 states. [2021-10-11 02:23:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:48,746 INFO L93 Difference]: Finished difference Result 936 states and 1408 transitions. [2021-10-11 02:23:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:48,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2021-10-11 02:23:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:48,750 INFO L225 Difference]: With dead ends: 936 [2021-10-11 02:23:48,750 INFO L226 Difference]: Without dead ends: 470 [2021-10-11 02:23:48,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-11 02:23:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2021-10-11 02:23:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2021-10-11 02:23:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 701 transitions. [2021-10-11 02:23:48,775 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 701 transitions. Word has length 73 [2021-10-11 02:23:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:48,776 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 701 transitions. [2021-10-11 02:23:48,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:48,777 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 701 transitions. [2021-10-11 02:23:48,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:23:48,778 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:48,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:23:48,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-11 02:23:48,779 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:48,779 INFO L82 PathProgramCache]: Analyzing trace with hash -247676427, now seen corresponding path program 1 times [2021-10-11 02:23:48,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:48,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148291516] [2021-10-11 02:23:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-11 02:23:48,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148291516] [2021-10-11 02:23:48,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:48,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:48,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277761042] [2021-10-11 02:23:48,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:48,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:48,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:48,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:48,856 INFO L87 Difference]: Start difference. First operand 468 states and 701 transitions. Second operand 3 states. [2021-10-11 02:23:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:49,046 INFO L93 Difference]: Finished difference Result 934 states and 1400 transitions. [2021-10-11 02:23:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:49,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-10-11 02:23:49,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:49,050 INFO L225 Difference]: With dead ends: 934 [2021-10-11 02:23:49,050 INFO L226 Difference]: Without dead ends: 468 [2021-10-11 02:23:49,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-11 02:23:49,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 466. [2021-10-11 02:23:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2021-10-11 02:23:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 694 transitions. [2021-10-11 02:23:49,074 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 694 transitions. Word has length 78 [2021-10-11 02:23:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:49,075 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 694 transitions. [2021-10-11 02:23:49,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 694 transitions. [2021-10-11 02:23:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-11 02:23:49,076 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:49,076 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:23:49,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-11 02:23:49,077 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:49,077 INFO L82 PathProgramCache]: Analyzing trace with hash -41979843, now seen corresponding path program 1 times [2021-10-11 02:23:49,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:49,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898954806] [2021-10-11 02:23:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-11 02:23:49,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898954806] [2021-10-11 02:23:49,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:49,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:49,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656418255] [2021-10-11 02:23:49,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:49,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:49,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:49,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:49,109 INFO L87 Difference]: Start difference. First operand 466 states and 694 transitions. Second operand 3 states. [2021-10-11 02:23:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:49,277 INFO L93 Difference]: Finished difference Result 980 states and 1462 transitions. [2021-10-11 02:23:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:49,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2021-10-11 02:23:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:49,281 INFO L225 Difference]: With dead ends: 980 [2021-10-11 02:23:49,281 INFO L226 Difference]: Without dead ends: 516 [2021-10-11 02:23:49,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-11 02:23:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 496. [2021-10-11 02:23:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2021-10-11 02:23:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 732 transitions. [2021-10-11 02:23:49,308 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 732 transitions. Word has length 85 [2021-10-11 02:23:49,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:49,308 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 732 transitions. [2021-10-11 02:23:49,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:49,308 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 732 transitions. [2021-10-11 02:23:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:23:49,309 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:49,310 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:23:49,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-11 02:23:49,310 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:49,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:49,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1023860646, now seen corresponding path program 1 times [2021-10-11 02:23:49,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:49,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343111391] [2021-10-11 02:23:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-11 02:23:49,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343111391] [2021-10-11 02:23:49,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:49,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:49,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427313610] [2021-10-11 02:23:49,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:49,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:49,364 INFO L87 Difference]: Start difference. First operand 496 states and 732 transitions. Second operand 3 states. [2021-10-11 02:23:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:49,539 INFO L93 Difference]: Finished difference Result 1000 states and 1478 transitions. [2021-10-11 02:23:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:49,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:23:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:49,543 INFO L225 Difference]: With dead ends: 1000 [2021-10-11 02:23:49,543 INFO L226 Difference]: Without dead ends: 506 [2021-10-11 02:23:49,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:49,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-11 02:23:49,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 496. [2021-10-11 02:23:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2021-10-11 02:23:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 726 transitions. [2021-10-11 02:23:49,569 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 726 transitions. Word has length 86 [2021-10-11 02:23:49,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:49,569 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 726 transitions. [2021-10-11 02:23:49,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:49,569 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 726 transitions. [2021-10-11 02:23:49,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-11 02:23:49,571 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:49,571 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:49,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-11 02:23:49,571 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:49,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:49,571 INFO L82 PathProgramCache]: Analyzing trace with hash -2140375978, now seen corresponding path program 1 times [2021-10-11 02:23:49,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:49,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547663514] [2021-10-11 02:23:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-11 02:23:49,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547663514] [2021-10-11 02:23:49,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:49,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:49,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027958088] [2021-10-11 02:23:49,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:49,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:49,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:49,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:49,607 INFO L87 Difference]: Start difference. First operand 496 states and 726 transitions. Second operand 3 states. [2021-10-11 02:23:49,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:49,811 INFO L93 Difference]: Finished difference Result 1044 states and 1527 transitions. [2021-10-11 02:23:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:49,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2021-10-11 02:23:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:49,815 INFO L225 Difference]: With dead ends: 1044 [2021-10-11 02:23:49,815 INFO L226 Difference]: Without dead ends: 550 [2021-10-11 02:23:49,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-11 02:23:49,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2021-10-11 02:23:49,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2021-10-11 02:23:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 797 transitions. [2021-10-11 02:23:49,846 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 797 transitions. Word has length 90 [2021-10-11 02:23:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:49,846 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 797 transitions. [2021-10-11 02:23:49,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 797 transitions. [2021-10-11 02:23:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:23:49,848 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:49,848 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:49,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-11 02:23:49,848 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2122036126, now seen corresponding path program 1 times [2021-10-11 02:23:49,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:49,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821149981] [2021-10-11 02:23:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-11 02:23:49,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821149981] [2021-10-11 02:23:49,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:49,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:49,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311011092] [2021-10-11 02:23:49,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:49,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:49,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:49,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:49,885 INFO L87 Difference]: Start difference. First operand 546 states and 797 transitions. Second operand 3 states. [2021-10-11 02:23:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:50,088 INFO L93 Difference]: Finished difference Result 1093 states and 1595 transitions. [2021-10-11 02:23:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:50,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:23:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:50,092 INFO L225 Difference]: With dead ends: 1093 [2021-10-11 02:23:50,092 INFO L226 Difference]: Without dead ends: 545 [2021-10-11 02:23:50,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:50,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-10-11 02:23:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 543. [2021-10-11 02:23:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2021-10-11 02:23:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 791 transitions. [2021-10-11 02:23:50,122 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 791 transitions. Word has length 91 [2021-10-11 02:23:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:50,122 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 791 transitions. [2021-10-11 02:23:50,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 791 transitions. [2021-10-11 02:23:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:23:50,124 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:50,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:50,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-11 02:23:50,124 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:50,125 INFO L82 PathProgramCache]: Analyzing trace with hash -387568645, now seen corresponding path program 1 times [2021-10-11 02:23:50,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:50,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979690291] [2021-10-11 02:23:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-11 02:23:50,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979690291] [2021-10-11 02:23:50,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:50,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:50,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817260443] [2021-10-11 02:23:50,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:50,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:50,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:50,161 INFO L87 Difference]: Start difference. First operand 543 states and 791 transitions. Second operand 3 states. [2021-10-11 02:23:50,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:50,358 INFO L93 Difference]: Finished difference Result 1127 states and 1639 transitions. [2021-10-11 02:23:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:50,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:23:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:50,363 INFO L225 Difference]: With dead ends: 1127 [2021-10-11 02:23:50,363 INFO L226 Difference]: Without dead ends: 586 [2021-10-11 02:23:50,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-10-11 02:23:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 582. [2021-10-11 02:23:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2021-10-11 02:23:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 841 transitions. [2021-10-11 02:23:50,396 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 841 transitions. Word has length 103 [2021-10-11 02:23:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:50,396 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 841 transitions. [2021-10-11 02:23:50,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 841 transitions. [2021-10-11 02:23:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-11 02:23:50,398 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:50,398 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:50,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-11 02:23:50,398 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:50,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:50,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1341072435, now seen corresponding path program 1 times [2021-10-11 02:23:50,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:50,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488574966] [2021-10-11 02:23:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-11 02:23:50,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488574966] [2021-10-11 02:23:50,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:50,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:50,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167472716] [2021-10-11 02:23:50,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:50,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:50,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:50,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:50,443 INFO L87 Difference]: Start difference. First operand 582 states and 841 transitions. Second operand 3 states. [2021-10-11 02:23:50,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:50,635 INFO L93 Difference]: Finished difference Result 1164 states and 1682 transitions. [2021-10-11 02:23:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:50,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2021-10-11 02:23:50,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:50,639 INFO L225 Difference]: With dead ends: 1164 [2021-10-11 02:23:50,639 INFO L226 Difference]: Without dead ends: 584 [2021-10-11 02:23:50,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-10-11 02:23:50,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2021-10-11 02:23:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2021-10-11 02:23:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 836 transitions. [2021-10-11 02:23:50,688 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 836 transitions. Word has length 104 [2021-10-11 02:23:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:50,689 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 836 transitions. [2021-10-11 02:23:50,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 836 transitions. [2021-10-11 02:23:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-11 02:23:50,690 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:50,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:23:50,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-11 02:23:50,691 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:50,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1479794679, now seen corresponding path program 1 times [2021-10-11 02:23:50,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:50,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23668422] [2021-10-11 02:23:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 02:23:50,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23668422] [2021-10-11 02:23:50,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:50,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:50,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752326011] [2021-10-11 02:23:50,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:50,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:50,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:50,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:50,737 INFO L87 Difference]: Start difference. First operand 582 states and 836 transitions. Second operand 3 states. [2021-10-11 02:23:50,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:50,921 INFO L93 Difference]: Finished difference Result 1198 states and 1720 transitions. [2021-10-11 02:23:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:50,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2021-10-11 02:23:50,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:50,926 INFO L225 Difference]: With dead ends: 1198 [2021-10-11 02:23:50,926 INFO L226 Difference]: Without dead ends: 618 [2021-10-11 02:23:50,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-10-11 02:23:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 610. [2021-10-11 02:23:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2021-10-11 02:23:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 867 transitions. [2021-10-11 02:23:50,960 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 867 transitions. Word has length 106 [2021-10-11 02:23:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:50,961 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 867 transitions. [2021-10-11 02:23:50,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 867 transitions. [2021-10-11 02:23:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:23:50,962 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:50,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:23:50,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-11 02:23:50,963 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:50,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1663039334, now seen corresponding path program 1 times [2021-10-11 02:23:50,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:50,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778722270] [2021-10-11 02:23:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 02:23:50,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778722270] [2021-10-11 02:23:50,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:50,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:50,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550938210] [2021-10-11 02:23:50,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:50,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:50,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:50,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:50,999 INFO L87 Difference]: Start difference. First operand 610 states and 867 transitions. Second operand 3 states. [2021-10-11 02:23:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:51,193 INFO L93 Difference]: Finished difference Result 1222 states and 1737 transitions. [2021-10-11 02:23:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:51,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:23:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:51,197 INFO L225 Difference]: With dead ends: 1222 [2021-10-11 02:23:51,197 INFO L226 Difference]: Without dead ends: 614 [2021-10-11 02:23:51,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-10-11 02:23:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 610. [2021-10-11 02:23:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2021-10-11 02:23:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 858 transitions. [2021-10-11 02:23:51,232 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 858 transitions. Word has length 107 [2021-10-11 02:23:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:51,232 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 858 transitions. [2021-10-11 02:23:51,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 858 transitions. [2021-10-11 02:23:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-11 02:23:51,234 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:51,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2021-10-11 02:23:51,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-11 02:23:51,235 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1022655758, now seen corresponding path program 1 times [2021-10-11 02:23:51,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:51,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692367719] [2021-10-11 02:23:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-11 02:23:51,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692367719] [2021-10-11 02:23:51,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:51,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:51,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602252095] [2021-10-11 02:23:51,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:51,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:51,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:51,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:51,274 INFO L87 Difference]: Start difference. First operand 610 states and 858 transitions. Second operand 3 states. [2021-10-11 02:23:51,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:51,450 INFO L93 Difference]: Finished difference Result 1248 states and 1754 transitions. [2021-10-11 02:23:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:51,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2021-10-11 02:23:51,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:51,454 INFO L225 Difference]: With dead ends: 1248 [2021-10-11 02:23:51,454 INFO L226 Difference]: Without dead ends: 640 [2021-10-11 02:23:51,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:51,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-11 02:23:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2021-10-11 02:23:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2021-10-11 02:23:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 884 transitions. [2021-10-11 02:23:51,493 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 884 transitions. Word has length 124 [2021-10-11 02:23:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:51,493 INFO L481 AbstractCegarLoop]: Abstraction has 636 states and 884 transitions. [2021-10-11 02:23:51,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 884 transitions. [2021-10-11 02:23:51,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-11 02:23:51,495 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:51,495 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2021-10-11 02:23:51,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-11 02:23:51,496 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:51,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2111043695, now seen corresponding path program 1 times [2021-10-11 02:23:51,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:51,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605002126] [2021-10-11 02:23:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-11 02:23:51,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605002126] [2021-10-11 02:23:51,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:51,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:51,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814741850] [2021-10-11 02:23:51,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:51,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:51,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:51,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:51,536 INFO L87 Difference]: Start difference. First operand 636 states and 884 transitions. Second operand 3 states. [2021-10-11 02:23:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:51,719 INFO L93 Difference]: Finished difference Result 1272 states and 1768 transitions. [2021-10-11 02:23:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:51,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2021-10-11 02:23:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:51,723 INFO L225 Difference]: With dead ends: 1272 [2021-10-11 02:23:51,723 INFO L226 Difference]: Without dead ends: 638 [2021-10-11 02:23:51,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:51,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-11 02:23:51,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2021-10-11 02:23:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2021-10-11 02:23:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 874 transitions. [2021-10-11 02:23:51,757 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 874 transitions. Word has length 125 [2021-10-11 02:23:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:51,758 INFO L481 AbstractCegarLoop]: Abstraction has 636 states and 874 transitions. [2021-10-11 02:23:51,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 874 transitions. [2021-10-11 02:23:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-11 02:23:51,760 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:51,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:23:51,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-11 02:23:51,760 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1574687855, now seen corresponding path program 1 times [2021-10-11 02:23:51,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:51,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486053061] [2021-10-11 02:23:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:23:51,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486053061] [2021-10-11 02:23:51,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:51,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:51,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482105233] [2021-10-11 02:23:51,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:51,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:51,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:51,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:51,822 INFO L87 Difference]: Start difference. First operand 636 states and 874 transitions. Second operand 3 states. [2021-10-11 02:23:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:52,028 INFO L93 Difference]: Finished difference Result 1321 states and 1809 transitions. [2021-10-11 02:23:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:52,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2021-10-11 02:23:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:52,032 INFO L225 Difference]: With dead ends: 1321 [2021-10-11 02:23:52,033 INFO L226 Difference]: Without dead ends: 687 [2021-10-11 02:23:52,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-10-11 02:23:52,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 681. [2021-10-11 02:23:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2021-10-11 02:23:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 928 transitions. [2021-10-11 02:23:52,071 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 928 transitions. Word has length 129 [2021-10-11 02:23:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:52,071 INFO L481 AbstractCegarLoop]: Abstraction has 681 states and 928 transitions. [2021-10-11 02:23:52,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 928 transitions. [2021-10-11 02:23:52,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-11 02:23:52,073 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:52,073 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:23:52,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-11 02:23:52,074 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:52,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:52,074 INFO L82 PathProgramCache]: Analyzing trace with hash 130516969, now seen corresponding path program 1 times [2021-10-11 02:23:52,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:52,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871386916] [2021-10-11 02:23:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:23:52,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871386916] [2021-10-11 02:23:52,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:52,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:52,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934115190] [2021-10-11 02:23:52,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:52,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:52,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:52,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,129 INFO L87 Difference]: Start difference. First operand 681 states and 928 transitions. Second operand 3 states. [2021-10-11 02:23:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:52,344 INFO L93 Difference]: Finished difference Result 1363 states and 1857 transitions. [2021-10-11 02:23:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:52,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2021-10-11 02:23:52,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:52,348 INFO L225 Difference]: With dead ends: 1363 [2021-10-11 02:23:52,348 INFO L226 Difference]: Without dead ends: 668 [2021-10-11 02:23:52,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-11 02:23:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 665. [2021-10-11 02:23:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2021-10-11 02:23:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 905 transitions. [2021-10-11 02:23:52,390 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 905 transitions. Word has length 130 [2021-10-11 02:23:52,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:52,390 INFO L481 AbstractCegarLoop]: Abstraction has 665 states and 905 transitions. [2021-10-11 02:23:52,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 905 transitions. [2021-10-11 02:23:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-11 02:23:52,392 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:52,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:23:52,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-11 02:23:52,393 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash -352886759, now seen corresponding path program 1 times [2021-10-11 02:23:52,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:52,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248165442] [2021-10-11 02:23:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-10-11 02:23:52,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248165442] [2021-10-11 02:23:52,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:52,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:52,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975094428] [2021-10-11 02:23:52,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:52,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:52,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:52,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,455 INFO L87 Difference]: Start difference. First operand 665 states and 905 transitions. Second operand 3 states. [2021-10-11 02:23:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:52,664 INFO L93 Difference]: Finished difference Result 1332 states and 1813 transitions. [2021-10-11 02:23:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:52,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2021-10-11 02:23:52,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:52,668 INFO L225 Difference]: With dead ends: 1332 [2021-10-11 02:23:52,668 INFO L226 Difference]: Without dead ends: 669 [2021-10-11 02:23:52,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-10-11 02:23:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 665. [2021-10-11 02:23:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2021-10-11 02:23:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 898 transitions. [2021-10-11 02:23:52,724 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 898 transitions. Word has length 134 [2021-10-11 02:23:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:52,724 INFO L481 AbstractCegarLoop]: Abstraction has 665 states and 898 transitions. [2021-10-11 02:23:52,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 898 transitions. [2021-10-11 02:23:52,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-11 02:23:52,727 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:52,727 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:23:52,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-11 02:23:52,728 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:52,728 INFO L82 PathProgramCache]: Analyzing trace with hash 277686337, now seen corresponding path program 1 times [2021-10-11 02:23:52,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:52,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633434179] [2021-10-11 02:23:52,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-10-11 02:23:52,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633434179] [2021-10-11 02:23:52,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:52,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:52,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076239874] [2021-10-11 02:23:52,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:52,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,789 INFO L87 Difference]: Start difference. First operand 665 states and 898 transitions. Second operand 3 states. [2021-10-11 02:23:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:52,982 INFO L93 Difference]: Finished difference Result 1320 states and 1782 transitions. [2021-10-11 02:23:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:52,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2021-10-11 02:23:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:52,986 INFO L225 Difference]: With dead ends: 1320 [2021-10-11 02:23:52,986 INFO L226 Difference]: Without dead ends: 640 [2021-10-11 02:23:52,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-11 02:23:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2021-10-11 02:23:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2021-10-11 02:23:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 853 transitions. [2021-10-11 02:23:53,022 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 853 transitions. Word has length 135 [2021-10-11 02:23:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:53,022 INFO L481 AbstractCegarLoop]: Abstraction has 636 states and 853 transitions. [2021-10-11 02:23:53,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 853 transitions. [2021-10-11 02:23:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-11 02:23:53,024 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:53,025 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2021-10-11 02:23:53,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-11 02:23:53,025 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:53,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:53,026 INFO L82 PathProgramCache]: Analyzing trace with hash -851819289, now seen corresponding path program 1 times [2021-10-11 02:23:53,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:53,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437573656] [2021-10-11 02:23:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-10-11 02:23:53,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437573656] [2021-10-11 02:23:53,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:53,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:53,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972757086] [2021-10-11 02:23:53,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:53,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:53,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:53,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:53,090 INFO L87 Difference]: Start difference. First operand 636 states and 853 transitions. Second operand 3 states. [2021-10-11 02:23:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:53,202 INFO L93 Difference]: Finished difference Result 1885 states and 2523 transitions. [2021-10-11 02:23:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:53,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2021-10-11 02:23:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:53,210 INFO L225 Difference]: With dead ends: 1885 [2021-10-11 02:23:53,210 INFO L226 Difference]: Without dead ends: 1251 [2021-10-11 02:23:53,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-10-11 02:23:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2021-10-11 02:23:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2021-10-11 02:23:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1668 transitions. [2021-10-11 02:23:53,301 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1668 transitions. Word has length 139 [2021-10-11 02:23:53,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:53,301 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 1668 transitions. [2021-10-11 02:23:53,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1668 transitions. [2021-10-11 02:23:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-11 02:23:53,303 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:53,303 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2021-10-11 02:23:53,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-11 02:23:53,304 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:53,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1720290077, now seen corresponding path program 1 times [2021-10-11 02:23:53,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:53,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606623946] [2021-10-11 02:23:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:53,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:53,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:53,497 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:23:53,497 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:23:53,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-11 02:23:53,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:53 BoogieIcfgContainer [2021-10-11 02:23:53,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:53,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:53,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:53,647 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:53,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:44" (3/4) ... [2021-10-11 02:23:53,649 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:23:53,775 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59abb381-6ca5-46a9-8c25-cc747d68d6d2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:53,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:53,777 INFO L168 Benchmark]: Toolchain (without parser) took 11757.46 ms. Allocated memory was 88.1 MB in the beginning and 293.6 MB in the end (delta: 205.5 MB). Free memory was 53.6 MB in the beginning and 166.0 MB in the end (delta: -112.5 MB). Peak memory consumption was 92.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:53,777 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 60.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:53,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.06 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 80.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:53,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.55 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 77.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:53,779 INFO L168 Benchmark]: Boogie Preprocessor took 51.75 ms. Allocated memory is still 109.1 MB. Free memory was 77.5 MB in the beginning and 75.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:53,779 INFO L168 Benchmark]: RCFGBuilder took 1536.48 ms. Allocated memory is still 109.1 MB. Free memory was 75.4 MB in the beginning and 52.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:53,780 INFO L168 Benchmark]: TraceAbstraction took 9527.56 ms. Allocated memory was 109.1 MB in the beginning and 293.6 MB in the end (delta: 184.5 MB). Free memory was 51.7 MB in the beginning and 182.8 MB in the end (delta: -131.2 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:53,780 INFO L168 Benchmark]: Witness Printer took 128.64 ms. Allocated memory is still 293.6 MB. Free memory was 182.8 MB in the beginning and 166.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:53,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 60.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 436.06 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 80.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.55 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 77.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.75 ms. Allocated memory is still 109.1 MB. Free memory was 77.5 MB in the beginning and 75.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1536.48 ms. Allocated memory is still 109.1 MB. Free memory was 75.4 MB in the beginning and 52.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9527.56 ms. Allocated memory was 109.1 MB in the beginning and 293.6 MB in the end (delta: 184.5 MB). Free memory was 51.7 MB in the beginning and 182.8 MB in the end (delta: -131.2 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. * Witness Printer took 128.64 ms. Allocated memory is still 293.6 MB. Free memory was 182.8 MB in the beginning and 166.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 699]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L704] int s ; [L705] int tmp ; [L709] s = 8464 [L14] int s__info_callback = __VERIFIER_nondet_int() ; [L15] int s__in_handshake = __VERIFIER_nondet_int() ; [L16] int s__state ; [L17] int s__new_session ; [L18] int s__server ; [L19] int s__version = __VERIFIER_nondet_int() ; [L20] int s__type ; [L21] int s__init_num ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__rwstate ; [L24] int s__init_buf___0 = 1; [L25] int s__debug = __VERIFIER_nondet_int() ; [L26] int s__shutdown ; [L27] int s__cert = __VERIFIER_nondet_int() ; [L28] int s__options = __VERIFIER_nondet_int() ; [L29] int s__verify_mode = __VERIFIER_nondet_int() ; [L30] int s__session__peer = __VERIFIER_nondet_int() ; [L31] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L32] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L35] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__cert_request ; [L37] int s__s3__tmp__reuse_message ; [L38] int s__s3__tmp__use_rsa_tmp ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_cipher__algo_strength ; [L43] int s__session__cipher ; [L44] int buf ; [L45] unsigned long l ; [L46] unsigned long Time ; [L47] unsigned long tmp ; [L48] int cb ; [L49] long num1 = __VERIFIER_nondet_long() ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int got_new_session ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 ; [L62] long tmp___8 = __VERIFIER_nondet_long() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int tmp___10 = __VERIFIER_nondet_int() ; [L65] int blastFlag ; [L66] int __cil_tmp55 ; [L67] unsigned long __cil_tmp56 ; [L68] unsigned long __cil_tmp57 ; [L69] unsigned long __cil_tmp58 ; [L70] unsigned long __cil_tmp59 ; [L71] int __cil_tmp60 ; [L72] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L76] s__state = initial_state [L77] blastFlag = 0 [L78] tmp = __VERIFIER_nondet_int() [L79] Time = tmp [L80] cb = 0 [L81] ret = -1 [L82] skip = 0 [L83] got_new_session = 0 [L84] COND TRUE s__info_callback != 0 [L85] cb = s__info_callback [L91] s__in_handshake ++ [L92] COND TRUE tmp___1 + 12288 [L93] COND TRUE tmp___2 + 16384 [L97] COND FALSE !(s__cert == 0) [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND TRUE s__state == 8464 [L274] s__shutdown = 0 [L275] ret = __VERIFIER_nondet_int() [L276] COND TRUE blastFlag == 0 [L277] blastFlag = 1 [L279] COND FALSE !(ret <= 0) [L282] got_new_session = 1 [L283] s__state = 8496 [L284] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND TRUE s__state == 8496 [L288] ret = __VERIFIER_nondet_int() [L289] COND TRUE blastFlag == 1 [L290] blastFlag = 2 [L292] COND FALSE !(ret <= 0) [L295] COND FALSE !(\read(s__hit)) [L298] s__state = 8512 [L300] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND TRUE s__state == 8512 [L305] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L306] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L307] COND TRUE __cil_tmp56 + 256UL [L308] __cil_tmp56 = 256345 [L309] skip = 1 [L320] s__state = 8528 [L321] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND TRUE s__state == 8528 [L325] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L326] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L328] __cil_tmp57 = (unsigned long )s__options [L329] COND TRUE __cil_tmp57 + 2097152UL [L330] s__s3__tmp__use_rsa_tmp = 1 [L335] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L363] ret = __VERIFIER_nondet_int() [L364] COND FALSE !(blastFlag == 3) [L367] COND FALSE !(ret <= 0) [L384] s__state = 8544 [L385] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND FALSE !(s__state == 8528) [L152] COND FALSE !(s__state == 8529) [L155] COND TRUE s__state == 8544 [L389] COND TRUE s__verify_mode + 1 [L390] COND TRUE s__session__peer != 0 [L391] COND TRUE s__verify_mode + 4 [L392] s__verify_mode = 123 [L393] skip = 1 [L394] s__s3__tmp__cert_request = 0 [L395] s__state = 8560 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND FALSE !(! s__s3__tmp__reuse_message) [L688] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 8192) [L113] COND FALSE !(s__state == 24576) [L116] COND FALSE !(s__state == 8195) [L119] COND FALSE !(s__state == 8480) [L122] COND FALSE !(s__state == 8481) [L125] COND FALSE !(s__state == 8482) [L128] COND FALSE !(s__state == 8464) [L131] COND FALSE !(s__state == 8465) [L134] COND FALSE !(s__state == 8466) [L137] COND FALSE !(s__state == 8496) [L140] COND FALSE !(s__state == 8497) [L143] COND FALSE !(s__state == 8512) [L146] COND FALSE !(s__state == 8513) [L149] COND FALSE !(s__state == 8528) [L152] COND FALSE !(s__state == 8529) [L155] COND FALSE !(s__state == 8544) [L158] COND FALSE !(s__state == 8545) [L161] COND TRUE s__state == 8560 [L439] ret = __VERIFIER_nondet_int() [L440] COND FALSE !(ret <= 0) [L443] s__s3__tmp__next_state___0 = 8576 [L444] s__state = 8448 [L445] s__init_num = 0 [L653] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L654] COND TRUE ! s__s3__tmp__reuse_message [L655] COND TRUE ! skip [L656] COND TRUE state == 8560 [L657] COND TRUE s__state == 8448 [L658] COND TRUE s__verify_mode != -1 [L659] COND TRUE s__verify_mode != -2 [L660] COND TRUE __cil_tmp61 != 9021 [L661] COND TRUE __cil_tmp58 != 4294967294 [L662] COND TRUE blastFlag != 4 [L663] COND TRUE tmp___7 != 1024 [L699] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.3s, OverallIterations: 33, TraceHistogramMax: 6, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3969 SDtfs, 4395 SDslu, 816 SDs, 0 SdLazy, 2772 SolverSat, 1263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1249occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 32 MinimizatonAttempts, 198 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 2505 NumberOfCodeBlocks, 2505 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2332 ConstructedInterpolants, 0 QuantifiedInterpolants, 394525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 1895/1895 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...