./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH --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 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:27,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:27,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:27,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:27,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:27,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:27,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:27,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:27,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:27,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:27,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:27,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:27,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:27,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:27,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:27,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:27,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:27,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:27,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:27,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:27,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:27,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:27,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:27,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:27,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:27,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:27,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:27,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:27,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:27,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:27,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:27,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:27,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:27,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:27,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:27,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:27,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:27,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:27,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:27,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:27,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:27,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:40:27,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:27,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:27,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:27,725 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:27,725 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:27,726 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:27,726 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:40:27,726 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:27,732 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:27,733 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:40:27,734 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:40:27,734 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:27,734 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:40:27,734 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:40:27,735 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:40:27,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:27,736 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:27,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:40:27,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:27,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:27,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:27,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:27,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:27,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:27,738 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:27,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:27,738 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:27,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:27,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:27,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:27,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:27,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:27,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:27,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:27,742 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:40:27,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:40:27,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:27,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:27,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:27,743 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_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 [2021-11-03 03:40:28,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:28,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:28,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:28,067 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:28,068 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:28,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-11-03 03:40:28,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data/ee3cf9496/dc061746aa154226970485e7be244cdc/FLAG0c75e8dfa [2021-11-03 03:40:28,610 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:28,610 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-11-03 03:40:28,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data/ee3cf9496/dc061746aa154226970485e7be244cdc/FLAG0c75e8dfa [2021-11-03 03:40:28,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data/ee3cf9496/dc061746aa154226970485e7be244cdc [2021-11-03 03:40:28,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:28,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:28,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:28,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:29,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:29,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:28" (1/1) ... [2021-11-03 03:40:29,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fac164f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29, skipping insertion in model container [2021-11-03 03:40:29,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:28" (1/1) ... [2021-11-03 03:40:29,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:29,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:29,274 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-11-03 03:40:29,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:29,358 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:40:29,370 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-11-03 03:40:29,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:29,411 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:40:29,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29 WrapperNode [2021-11-03 03:40:29,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:29,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:29,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:40:29,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:40:29,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:29,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:40:29,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:40:29,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:40:29,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:40:29,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:40:29,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:40:29,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:40:29,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (1/1) ... [2021-11-03 03:40:29,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:29,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:29,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:40:29,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:40:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:40:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:40:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:40:29,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:40:30,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:40:30,383 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-03 03:40:30,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:30 BoogieIcfgContainer [2021-11-03 03:40:30,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:40:30,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:40:30,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:40:30,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:40:30,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:28" (1/3) ... [2021-11-03 03:40:30,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e67b44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:30, skipping insertion in model container [2021-11-03 03:40:30,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:29" (2/3) ... [2021-11-03 03:40:30,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e67b44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:30, skipping insertion in model container [2021-11-03 03:40:30,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:30" (3/3) ... [2021-11-03 03:40:30,394 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-11-03 03:40:30,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:40:30,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 03:40:30,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:40:30,461 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:40:30,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 03:40:30,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 65 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 03:40:30,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:30,498 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:30,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:30,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:30,504 INFO L85 PathProgramCache]: Analyzing trace with hash 68680612, now seen corresponding path program 1 times [2021-11-03 03:40:30,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:30,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80601512] [2021-11-03 03:40:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:30,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:30,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:30,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80601512] [2021-11-03 03:40:30,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80601512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:30,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:30,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 03:40:30,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063740111] [2021-11-03 03:40:30,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:30,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:31,008 INFO L87 Difference]: Start difference. First operand has 66 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 65 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:31,223 INFO L93 Difference]: Finished difference Result 210 states and 311 transitions. [2021-11-03 03:40:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:40:31,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 03:40:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:31,235 INFO L225 Difference]: With dead ends: 210 [2021-11-03 03:40:31,235 INFO L226 Difference]: Without dead ends: 145 [2021-11-03 03:40:31,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-03 03:40:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 66. [2021-11-03 03:40:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.5) internal successors, (90), 65 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2021-11-03 03:40:31,278 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 10 [2021-11-03 03:40:31,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:31,279 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2021-11-03 03:40:31,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2021-11-03 03:40:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:40:31,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:31,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:31,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:40:31,283 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1768782671, now seen corresponding path program 1 times [2021-11-03 03:40:31,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:31,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443574467] [2021-11-03 03:40:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:31,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:31,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:31,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443574467] [2021-11-03 03:40:31,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443574467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:31,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:31,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:40:31,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898100028] [2021-11-03 03:40:31,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:40:31,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:40:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:40:31,475 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:31,671 INFO L93 Difference]: Finished difference Result 215 states and 274 transitions. [2021-11-03 03:40:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:40:31,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 03:40:31,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:31,675 INFO L225 Difference]: With dead ends: 215 [2021-11-03 03:40:31,675 INFO L226 Difference]: Without dead ends: 201 [2021-11-03 03:40:31,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:40:31,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-03 03:40:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 98. [2021-11-03 03:40:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 97 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2021-11-03 03:40:31,691 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 13 [2021-11-03 03:40:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:31,691 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2021-11-03 03:40:31,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2021-11-03 03:40:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 03:40:31,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:31,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:31,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:40:31,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash -953037586, now seen corresponding path program 1 times [2021-11-03 03:40:31,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:31,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217142] [2021-11-03 03:40:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:31,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:32,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:32,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217142] [2021-11-03 03:40:32,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:32,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:32,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 03:40:32,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169269900] [2021-11-03 03:40:32,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:40:32,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:40:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:40:32,493 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:33,206 INFO L93 Difference]: Finished difference Result 228 states and 292 transitions. [2021-11-03 03:40:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 03:40:33,207 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 03:40:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:33,209 INFO L225 Difference]: With dead ends: 228 [2021-11-03 03:40:33,210 INFO L226 Difference]: Without dead ends: 224 [2021-11-03 03:40:33,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:40:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-03 03:40:33,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 101. [2021-11-03 03:40:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 100 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2021-11-03 03:40:33,225 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 14 [2021-11-03 03:40:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:33,225 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2021-11-03 03:40:33,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,225 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2021-11-03 03:40:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 03:40:33,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:33,227 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:33,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:40:33,227 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash 565696089, now seen corresponding path program 1 times [2021-11-03 03:40:33,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:33,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191988037] [2021-11-03 03:40:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:33,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:33,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:33,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191988037] [2021-11-03 03:40:33,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191988037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:33,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:33,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 03:40:33,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920225585] [2021-11-03 03:40:33,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:33,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:33,326 INFO L87 Difference]: Start difference. First operand 101 states and 142 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:33,415 INFO L93 Difference]: Finished difference Result 213 states and 274 transitions. [2021-11-03 03:40:33,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:40:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 03:40:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:33,417 INFO L225 Difference]: With dead ends: 213 [2021-11-03 03:40:33,417 INFO L226 Difference]: Without dead ends: 169 [2021-11-03 03:40:33,418 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:40:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-03 03:40:33,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 101. [2021-11-03 03:40:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.4842105263157894) internal successors, (141), 100 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2021-11-03 03:40:33,428 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 14 [2021-11-03 03:40:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:33,429 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2021-11-03 03:40:33,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2021-11-03 03:40:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 03:40:33,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:33,430 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:33,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:40:33,431 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash 519328109, now seen corresponding path program 1 times [2021-11-03 03:40:33,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:33,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914979272] [2021-11-03 03:40:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:33,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:33,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:33,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914979272] [2021-11-03 03:40:33,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914979272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:33,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:33,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 03:40:33,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311397437] [2021-11-03 03:40:33,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:40:33,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:40:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:33,555 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:33,669 INFO L93 Difference]: Finished difference Result 195 states and 252 transitions. [2021-11-03 03:40:33,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:40:33,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 03:40:33,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:33,672 INFO L225 Difference]: With dead ends: 195 [2021-11-03 03:40:33,672 INFO L226 Difference]: Without dead ends: 185 [2021-11-03 03:40:33,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:40:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-03 03:40:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 97. [2021-11-03 03:40:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 96 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2021-11-03 03:40:33,696 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 15 [2021-11-03 03:40:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:33,696 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2021-11-03 03:40:33,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2021-11-03 03:40:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 03:40:33,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:33,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:33,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 03:40:33,700 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1588871102, now seen corresponding path program 1 times [2021-11-03 03:40:33,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:33,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299646184] [2021-11-03 03:40:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:33,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:33,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:33,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299646184] [2021-11-03 03:40:33,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299646184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:33,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:33,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 03:40:33,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706800681] [2021-11-03 03:40:33,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:33,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:33,851 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:33,931 INFO L93 Difference]: Finished difference Result 188 states and 242 transitions. [2021-11-03 03:40:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:40:33,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 03:40:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:33,933 INFO L225 Difference]: With dead ends: 188 [2021-11-03 03:40:33,933 INFO L226 Difference]: Without dead ends: 175 [2021-11-03 03:40:33,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:40:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-03 03:40:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 102. [2021-11-03 03:40:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.46875) internal successors, (141), 101 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 141 transitions. [2021-11-03 03:40:33,947 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 141 transitions. Word has length 17 [2021-11-03 03:40:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:33,948 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 141 transitions. [2021-11-03 03:40:33,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:33,948 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 141 transitions. [2021-11-03 03:40:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:40:33,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:33,952 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:33,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 03:40:33,953 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash 122373411, now seen corresponding path program 1 times [2021-11-03 03:40:33,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:33,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516066499] [2021-11-03 03:40:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:33,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:34,556 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:34,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516066499] [2021-11-03 03:40:34,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516066499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:34,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:34,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:40:34,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239980538] [2021-11-03 03:40:34,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:40:34,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:34,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:40:34,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:40:34,558 INFO L87 Difference]: Start difference. First operand 102 states and 141 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:35,399 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2021-11-03 03:40:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 03:40:35,401 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 03:40:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:35,402 INFO L225 Difference]: With dead ends: 171 [2021-11-03 03:40:35,402 INFO L226 Difference]: Without dead ends: 152 [2021-11-03 03:40:35,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:40:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-03 03:40:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 87. [2021-11-03 03:40:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 86 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2021-11-03 03:40:35,409 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 18 [2021-11-03 03:40:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:35,409 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2021-11-03 03:40:35,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2021-11-03 03:40:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:40:35,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:35,415 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:35,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 03:40:35,418 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:35,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2059638367, now seen corresponding path program 1 times [2021-11-03 03:40:35,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:35,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111646332] [2021-11-03 03:40:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:35,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:35,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:35,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111646332] [2021-11-03 03:40:35,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111646332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:35,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:35,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 03:40:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458680103] [2021-11-03 03:40:35,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:40:35,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:40:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:35,544 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:35,764 INFO L93 Difference]: Finished difference Result 297 states and 369 transitions. [2021-11-03 03:40:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:40:35,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 03:40:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:35,766 INFO L225 Difference]: With dead ends: 297 [2021-11-03 03:40:35,767 INFO L226 Difference]: Without dead ends: 293 [2021-11-03 03:40:35,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:40:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-03 03:40:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 124. [2021-11-03 03:40:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.5) internal successors, (177), 123 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 177 transitions. [2021-11-03 03:40:35,780 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 177 transitions. Word has length 18 [2021-11-03 03:40:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:35,780 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 177 transitions. [2021-11-03 03:40:35,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 177 transitions. [2021-11-03 03:40:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:40:35,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:35,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:35,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 03:40:35,782 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash -716595254, now seen corresponding path program 1 times [2021-11-03 03:40:35,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:35,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505900173] [2021-11-03 03:40:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:35,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:40:35,835 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:40:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:40:35,888 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 03:40:35,889 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:40:35,890 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:35,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:35,897 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:35,897 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:35,897 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:35,898 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:35,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 03:40:35,902 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:35,905 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:40:35,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:40:35 BoogieIcfgContainer [2021-11-03 03:40:35,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:40:35,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:40:35,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:40:35,966 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:40:35,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:30" (3/4) ... [2021-11-03 03:40:35,969 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 03:40:35,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:40:35,978 INFO L168 Benchmark]: Toolchain (without parser) took 6977.92 ms. Allocated memory was 83.9 MB in the beginning and 132.1 MB in the end (delta: 48.2 MB). Free memory was 47.7 MB in the beginning and 89.6 MB in the end (delta: -42.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:35,978 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 83.9 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:40:35,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.90 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.5 MB in the beginning and 73.6 MB in the end (delta: -26.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:35,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 71.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:35,982 INFO L168 Benchmark]: Boogie Preprocessor took 32.37 ms. Allocated memory is still 100.7 MB. Free memory was 71.1 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:35,983 INFO L168 Benchmark]: RCFGBuilder took 891.59 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 60.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:35,983 INFO L168 Benchmark]: TraceAbstraction took 5577.08 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 59.9 MB in the beginning and 90.7 MB in the end (delta: -30.8 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:35,983 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 132.1 MB. Free memory was 90.7 MB in the beginning and 89.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:35,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 83.9 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 413.90 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.5 MB in the beginning and 73.6 MB in the end (delta: -26.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 71.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.37 ms. Allocated memory is still 100.7 MB. Free memory was 71.1 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 891.59 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 60.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5577.08 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 59.9 MB in the beginning and 90.7 MB in the end (delta: -30.8 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.47 ms. Allocated memory is still 132.1 MB. Free memory was 90.7 MB in the beginning and 89.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 732 SDtfs, 1639 SDslu, 3336 SDs, 0 SdLazy, 604 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=8, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 768 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-11-03 03:40:36,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH --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 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:38,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:38,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:38,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:38,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:38,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:38,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:38,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:38,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:38,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:38,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:38,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:38,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:38,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:38,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:38,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:38,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:38,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:38,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:38,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:38,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:38,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:38,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:38,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:38,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:38,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:38,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:38,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:38,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:38,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:38,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:38,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:38,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:38,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:38,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:38,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:38,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:38,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:38,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:38,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:38,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:38,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:40:38,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:38,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:38,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:38,647 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:38,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:38,648 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:38,648 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:38,648 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:38,648 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:38,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:38,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:38,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:38,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:38,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:38,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:38,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:38,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:38,651 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:40:38,651 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:40:38,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:38,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:38,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:38,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:38,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:38,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:40:38,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:38,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:38,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:38,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:38,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:38,655 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:40:38,655 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:38,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:38,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:38,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:38,656 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 [2021-11-03 03:40:39,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:39,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:39,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:39,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:39,057 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:39,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-11-03 03:40:39,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data/e767e8af9/cc96ac48209147798359bdf088d6dbbc/FLAGd47c0adaf [2021-11-03 03:40:39,801 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:39,803 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-11-03 03:40:39,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data/e767e8af9/cc96ac48209147798359bdf088d6dbbc/FLAGd47c0adaf [2021-11-03 03:40:40,090 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/data/e767e8af9/cc96ac48209147798359bdf088d6dbbc [2021-11-03 03:40:40,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:40,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:40,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:40,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:40,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:40,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1023e975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40, skipping insertion in model container [2021-11-03 03:40:40,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:40,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:40,304 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-11-03 03:40:40,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:40,424 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:40:40,441 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-11-03 03:40:40,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:40,519 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:40:40,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40 WrapperNode [2021-11-03 03:40:40,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:40,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:40,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:40:40,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:40:40,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:40,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:40:40,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:40:40,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:40:40,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:40:40,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:40:40,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:40:40,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:40:40,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (1/1) ... [2021-11-03 03:40:40,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:40,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:40,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:40:40,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:40:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:40:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:40:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:40:40,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:40:41,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:40:41,405 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-03 03:40:41,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:41 BoogieIcfgContainer [2021-11-03 03:40:41,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:40:41,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:40:41,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:40:41,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:40:41,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:40" (1/3) ... [2021-11-03 03:40:41,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68646cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:41, skipping insertion in model container [2021-11-03 03:40:41,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40" (2/3) ... [2021-11-03 03:40:41,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68646cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:41, skipping insertion in model container [2021-11-03 03:40:41,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:41" (3/3) ... [2021-11-03 03:40:41,420 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-11-03 03:40:41,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:40:41,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 03:40:41,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:40:41,509 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:40:41,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 03:40:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:40:41,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:41,553 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:41,553 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:41,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-11-03 03:40:41,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:41,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187182642] [2021-11-03 03:40:41,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:41,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:41,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:41,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:41,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:40:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:41,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:40:41,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:41,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:42,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:42,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187182642] [2021-11-03 03:40:42,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187182642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:42,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:42,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:40:42,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066822781] [2021-11-03 03:40:42,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:42,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:42,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:42,044 INFO L87 Difference]: Start difference. First operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:42,343 INFO L93 Difference]: Finished difference Result 397 states and 607 transitions. [2021-11-03 03:40:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:40:42,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 03:40:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:42,372 INFO L225 Difference]: With dead ends: 397 [2021-11-03 03:40:42,373 INFO L226 Difference]: Without dead ends: 295 [2021-11-03 03:40:42,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-03 03:40:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2021-11-03 03:40:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 119 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2021-11-03 03:40:42,450 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2021-11-03 03:40:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:42,451 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2021-11-03 03:40:42,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2021-11-03 03:40:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 03:40:42,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:42,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:42,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:40:42,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:42,656 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2021-11-03 03:40:42,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:42,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254084002] [2021-11-03 03:40:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:42,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:42,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:42,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:40:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:42,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:40:42,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:42,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:42,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:42,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254084002] [2021-11-03 03:40:42,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254084002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:42,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:42,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:40:42,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502355527] [2021-11-03 03:40:42,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:42,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:42,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:42,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:42,960 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:43,182 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2021-11-03 03:40:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:40:43,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-03 03:40:43,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:43,187 INFO L225 Difference]: With dead ends: 394 [2021-11-03 03:40:43,187 INFO L226 Difference]: Without dead ends: 337 [2021-11-03 03:40:43,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-03 03:40:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2021-11-03 03:40:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.4944444444444445) internal successors, (269), 185 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2021-11-03 03:40:43,210 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2021-11-03 03:40:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:43,211 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2021-11-03 03:40:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2021-11-03 03:40:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 03:40:43,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:43,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:43,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:43,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:43,424 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2021-11-03 03:40:43,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:43,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490993223] [2021-11-03 03:40:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:43,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:43,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:43,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:43,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:40:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:43,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:40:43,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:43,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:43,694 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:43,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490993223] [2021-11-03 03:40:43,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490993223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:43,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:43,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:40:43,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398305528] [2021-11-03 03:40:43,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:43,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:43,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:43,703 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:43,849 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2021-11-03 03:40:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:40:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-03 03:40:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:43,868 INFO L225 Difference]: With dead ends: 378 [2021-11-03 03:40:43,868 INFO L226 Difference]: Without dead ends: 295 [2021-11-03 03:40:43,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:40:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-03 03:40:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2021-11-03 03:40:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.474264705882353) internal successors, (401), 277 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2021-11-03 03:40:43,909 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2021-11-03 03:40:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:43,909 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2021-11-03 03:40:43,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2021-11-03 03:40:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 03:40:43,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:43,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:43,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 03:40:44,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:44,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:44,154 INFO L85 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2021-11-03 03:40:44,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:44,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678715654] [2021-11-03 03:40:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:44,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:44,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:44,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:44,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:40:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:44,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:40:44,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:44,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:44,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:44,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678715654] [2021-11-03 03:40:44,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678715654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:44,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:44,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 03:40:44,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985855018] [2021-11-03 03:40:44,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:44,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:44,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:44,451 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:44,620 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2021-11-03 03:40:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:40:44,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-03 03:40:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:44,623 INFO L225 Difference]: With dead ends: 395 [2021-11-03 03:40:44,624 INFO L226 Difference]: Without dead ends: 318 [2021-11-03 03:40:44,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:40:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-03 03:40:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2021-11-03 03:40:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 252 states have (on average 1.4484126984126984) internal successors, (365), 257 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2021-11-03 03:40:44,664 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2021-11-03 03:40:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:44,664 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2021-11-03 03:40:44,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2021-11-03 03:40:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 03:40:44,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:44,674 INFO L513 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] [2021-11-03 03:40:44,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:44,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:44,891 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2021-11-03 03:40:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:44,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024970801] [2021-11-03 03:40:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:44,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:44,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:44,894 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:44,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:40:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:45,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:40:45,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:45,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:45,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:45,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024970801] [2021-11-03 03:40:45,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024970801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:45,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:45,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 03:40:45,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917747149] [2021-11-03 03:40:45,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:40:45,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:45,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:40:45,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:40:45,229 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:45,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:45,521 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2021-11-03 03:40:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:40:45,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-03 03:40:45,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:45,530 INFO L225 Difference]: With dead ends: 402 [2021-11-03 03:40:45,531 INFO L226 Difference]: Without dead ends: 354 [2021-11-03 03:40:45,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:40:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-03 03:40:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2021-11-03 03:40:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.43801652892562) internal successors, (348), 247 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2021-11-03 03:40:45,555 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2021-11-03 03:40:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:45,556 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2021-11-03 03:40:45,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2021-11-03 03:40:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 03:40:45,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:45,557 INFO L513 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] [2021-11-03 03:40:45,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:45,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:45,772 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2021-11-03 03:40:45,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:45,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447995462] [2021-11-03 03:40:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:45,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:45,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:45,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:45,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:40:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:45,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:45,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:45,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:46,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:46,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447995462] [2021-11-03 03:40:46,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447995462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:46,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:46,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:40:46,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938555696] [2021-11-03 03:40:46,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:46,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:46,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:46,091 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:46,144 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2021-11-03 03:40:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:40:46,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-03 03:40:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:46,147 INFO L225 Difference]: With dead ends: 456 [2021-11-03 03:40:46,147 INFO L226 Difference]: Without dead ends: 381 [2021-11-03 03:40:46,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:40:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-03 03:40:46,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2021-11-03 03:40:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 304 states have (on average 1.3914473684210527) internal successors, (423), 309 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2021-11-03 03:40:46,172 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2021-11-03 03:40:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:46,172 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2021-11-03 03:40:46,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2021-11-03 03:40:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 03:40:46,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:46,174 INFO L513 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] [2021-11-03 03:40:46,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:46,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:46,386 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:46,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-11-03 03:40:46,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:46,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403307879] [2021-11-03 03:40:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:46,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:46,388 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:46,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:40:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:46,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 03:40:46,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:46,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:46,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:46,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403307879] [2021-11-03 03:40:46,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403307879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:46,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:46,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-11-03 03:40:46,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670429084] [2021-11-03 03:40:46,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:40:46,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:40:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:46,775 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:47,394 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2021-11-03 03:40:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:40:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-03 03:40:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:47,401 INFO L225 Difference]: With dead ends: 912 [2021-11-03 03:40:47,401 INFO L226 Difference]: Without dead ends: 805 [2021-11-03 03:40:47,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-03 03:40:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-03 03:40:47,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2021-11-03 03:40:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 441 states have (on average 1.3786848072562359) internal successors, (608), 445 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2021-11-03 03:40:47,443 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2021-11-03 03:40:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:47,445 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2021-11-03 03:40:47,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2021-11-03 03:40:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 03:40:47,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:47,448 INFO L513 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] [2021-11-03 03:40:47,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 03:40:47,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:47,663 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2002224973, now seen corresponding path program 1 times [2021-11-03 03:40:47,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:47,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877709182] [2021-11-03 03:40:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:47,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:47,666 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:47,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:40:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:47,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:40:47,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:48,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:48,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:48,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877709182] [2021-11-03 03:40:48,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877709182] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:48,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:48,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-11-03 03:40:48,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294648713] [2021-11-03 03:40:48,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:40:48,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:40:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:40:48,160 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:49,034 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2021-11-03 03:40:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-03 03:40:49,035 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-03 03:40:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:49,039 INFO L225 Difference]: With dead ends: 746 [2021-11-03 03:40:49,039 INFO L226 Difference]: Without dead ends: 705 [2021-11-03 03:40:49,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-11-03 03:40:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-11-03 03:40:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2021-11-03 03:40:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 439 states have (on average 1.3804100227790432) internal successors, (606), 443 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2021-11-03 03:40:49,101 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2021-11-03 03:40:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:49,103 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2021-11-03 03:40:49,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2021-11-03 03:40:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 03:40:49,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:49,105 INFO L513 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] [2021-11-03 03:40:49,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:49,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,317 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2059483275, now seen corresponding path program 1 times [2021-11-03 03:40:49,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:49,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55384129] [2021-11-03 03:40:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:49,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:49,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:49,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:40:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:49,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:40:49,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:49,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:49,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:49,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55384129] [2021-11-03 03:40:49,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55384129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:49,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:49,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:40:49,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684839921] [2021-11-03 03:40:49,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:49,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:49,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:49,624 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:49,712 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2021-11-03 03:40:49,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:40:49,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-03 03:40:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:49,716 INFO L225 Difference]: With dead ends: 501 [2021-11-03 03:40:49,717 INFO L226 Difference]: Without dead ends: 496 [2021-11-03 03:40:49,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-03 03:40:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2021-11-03 03:40:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 443 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2021-11-03 03:40:49,750 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2021-11-03 03:40:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:49,751 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2021-11-03 03:40:49,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2021-11-03 03:40:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 03:40:49,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:49,753 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:49,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:49,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,967 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:49,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:49,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1226989779, now seen corresponding path program 1 times [2021-11-03 03:40:49,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:49,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052981049] [2021-11-03 03:40:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:49,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:49,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:49,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:40:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:50,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:50,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:50,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:50,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:50,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052981049] [2021-11-03 03:40:50,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052981049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:50,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:50,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:40:50,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61121684] [2021-11-03 03:40:50,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:50,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:50,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:50,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:50,324 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:50,424 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2021-11-03 03:40:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:40:50,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-03 03:40:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:50,430 INFO L225 Difference]: With dead ends: 901 [2021-11-03 03:40:50,430 INFO L226 Difference]: Without dead ends: 842 [2021-11-03 03:40:50,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:40:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-03 03:40:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2021-11-03 03:40:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 471 states have (on average 1.3715498938428874) internal successors, (646), 475 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2021-11-03 03:40:50,489 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2021-11-03 03:40:50,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:50,489 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2021-11-03 03:40:50,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2021-11-03 03:40:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 03:40:50,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:50,492 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:50,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:50,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:50,703 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1711564241, now seen corresponding path program 1 times [2021-11-03 03:40:50,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:50,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363618240] [2021-11-03 03:40:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:50,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:50,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:50,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:40:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:40:50,888 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:40:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:40:50,982 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-03 03:40:50,982 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:40:50,983 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:50,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:50,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:50,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:50,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:50,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:40:51,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:51,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:51,201 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:51,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:40:51,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:40:51 BoogieIcfgContainer [2021-11-03 03:40:51,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:40:51,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:40:51,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:40:51,253 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:40:51,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:41" (3/4) ... [2021-11-03 03:40:51,255 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-03 03:40:51,358 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 03:40:51,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:40:51,364 INFO L168 Benchmark]: Toolchain (without parser) took 11265.64 ms. Allocated memory was 69.2 MB in the beginning and 130.0 MB in the end (delta: 60.8 MB). Free memory was 48.3 MB in the beginning and 78.5 MB in the end (delta: -30.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:51,365 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 69.2 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:40:51,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.94 ms. Allocated memory is still 69.2 MB. Free memory was 48.1 MB in the beginning and 48.7 MB in the end (delta: -518.1 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:51,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.55 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 46.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:51,366 INFO L168 Benchmark]: Boogie Preprocessor took 76.25 ms. Allocated memory is still 69.2 MB. Free memory was 46.2 MB in the beginning and 44.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:51,367 INFO L168 Benchmark]: RCFGBuilder took 742.45 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 45.6 MB in the end (delta: -1.3 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:51,367 INFO L168 Benchmark]: TraceAbstraction took 9842.17 ms. Allocated memory was 69.2 MB in the beginning and 130.0 MB in the end (delta: 60.8 MB). Free memory was 45.3 MB in the beginning and 82.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:51,368 INFO L168 Benchmark]: Witness Printer took 109.44 ms. Allocated memory is still 130.0 MB. Free memory was 82.7 MB in the beginning and 78.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:51,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 69.2 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 419.94 ms. Allocated memory is still 69.2 MB. Free memory was 48.1 MB in the beginning and 48.7 MB in the end (delta: -518.1 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.55 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 46.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.25 ms. Allocated memory is still 69.2 MB. Free memory was 46.2 MB in the beginning and 44.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 742.45 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 45.6 MB in the end (delta: -1.3 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9842.17 ms. Allocated memory was 69.2 MB in the beginning and 130.0 MB in the end (delta: 60.8 MB). Free memory was 45.3 MB in the beginning and 82.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * Witness Printer took 109.44 ms. Allocated memory is still 130.0 MB. Free memory was 82.7 MB in the beginning and 78.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 96 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1434 SDtfs, 3939 SDslu, 5495 SDs, 0 SdLazy, 1126 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=10, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 989 SizeOfPredicates, 40 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-03 03:40:51,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf0906b-66bf-4561-a326-2614476d052c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE