./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a53c33c96a6264663871b921e3f0c5acac01aa5b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:23,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:23,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:23,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:23,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:23,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:23,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:23,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:23,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:23,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:23,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:23,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:23,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:23,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:23,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:23,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:23,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:23,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:23,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:23,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:23,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:23,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:23,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:23,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:23,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:23,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:23,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:23,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:23,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:23,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:23,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:23,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:23,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:23,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:23,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:23,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:23,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:23,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:23,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:23,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:23,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:23,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:23,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:23,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:23,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:23,796 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:23,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:23,796 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:23,797 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:23,797 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:23,797 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:23,798 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:23,799 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:23,800 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:23,800 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:23,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:23,801 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:23,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:23,802 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:23,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:23,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:23,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:23,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:23,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:23,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:23,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:23,805 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:23,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:23,806 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:23,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:23,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:23,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:23,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:23,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:23,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:23,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:23,811 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:23,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:23,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:23,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:23,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:23,812 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_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a53c33c96a6264663871b921e3f0c5acac01aa5b [2021-10-11 02:32:24,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:24,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:24,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:24,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:24,209 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:24,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c [2021-10-11 02:32:24,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/data/8e8730d8b/1edbd3a3cc7243ceafdd4830ce99ec7d/FLAG387e3c233 [2021-10-11 02:32:24,946 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:24,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/sv-benchmarks/c/eca-rers2012/Problem02_label00.c [2021-10-11 02:32:24,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/data/8e8730d8b/1edbd3a3cc7243ceafdd4830ce99ec7d/FLAG387e3c233 [2021-10-11 02:32:25,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/data/8e8730d8b/1edbd3a3cc7243ceafdd4830ce99ec7d [2021-10-11 02:32:25,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:25,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:25,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:25,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:25,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:25,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e59fcb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25, skipping insertion in model container [2021-10-11 02:32:25,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:25,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:25,708 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/sv-benchmarks/c/eca-rers2012/Problem02_label00.c[18487,18500] [2021-10-11 02:32:25,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:25,754 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:25,857 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/sv-benchmarks/c/eca-rers2012/Problem02_label00.c[18487,18500] [2021-10-11 02:32:25,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:25,901 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:25,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25 WrapperNode [2021-10-11 02:32:25,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:25,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:25,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:25,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:25,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:26,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:26,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:26,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:26,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:26,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:26,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:26,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:26,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:26,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:26,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:26,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:26,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:26,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:26,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:26,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:26,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:26,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:28,621 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:28,622 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:32:28,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:28 BoogieIcfgContainer [2021-10-11 02:32:28,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:28,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:28,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:28,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:28,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:25" (1/3) ... [2021-10-11 02:32:28,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d62c2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:28, skipping insertion in model container [2021-10-11 02:32:28,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (2/3) ... [2021-10-11 02:32:28,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d62c2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:28, skipping insertion in model container [2021-10-11 02:32:28,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:28" (3/3) ... [2021-10-11 02:32:28,637 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2021-10-11 02:32:28,654 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:28,658 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:32:28,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:32:28,710 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:28,711 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:28,711 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:28,711 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:28,711 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:28,711 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:28,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:28,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:32:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:32:28,739 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:28,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:28,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:28,746 INFO L82 PathProgramCache]: Analyzing trace with hash 925957135, now seen corresponding path program 1 times [2021-10-11 02:32:28,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:28,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835753933] [2021-10-11 02:32:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:29,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835753933] [2021-10-11 02:32:29,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:29,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:29,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17589163] [2021-10-11 02:32:29,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:29,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:29,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:29,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:29,170 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:32:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:29,788 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:32:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:29,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:32:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:29,810 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:32:29,812 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:32:29,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:32:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:32:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:32:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-11 02:32:29,868 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-11 02:32:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:29,868 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-11 02:32:29,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:29,869 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-11 02:32:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:32:29,873 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:29,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:29,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:29,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1028677892, now seen corresponding path program 1 times [2021-10-11 02:32:29,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:29,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418420611] [2021-10-11 02:32:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:29,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418420611] [2021-10-11 02:32:29,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:29,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:29,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541809753] [2021-10-11 02:32:29,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:29,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:29,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:29,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:29,950 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2021-10-11 02:32:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:30,449 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-11 02:32:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:30,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:32:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:30,452 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:32:30,453 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:32:30,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:32:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:32:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:32:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2021-10-11 02:32:30,495 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 84 [2021-10-11 02:32:30,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:30,496 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2021-10-11 02:32:30,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2021-10-11 02:32:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-11 02:32:30,509 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:30,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:30,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:30,510 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:30,511 INFO L82 PathProgramCache]: Analyzing trace with hash 2137927773, now seen corresponding path program 1 times [2021-10-11 02:32:30,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:30,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852720986] [2021-10-11 02:32:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:30,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852720986] [2021-10-11 02:32:30,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705836520] [2021-10-11 02:32:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:30,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:30,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:32:30,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:32:31,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:31,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:32:31,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79501899] [2021-10-11 02:32:31,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:31,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:31,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:31,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:31,114 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand 3 states. [2021-10-11 02:32:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:31,645 INFO L93 Difference]: Finished difference Result 565 states and 875 transitions. [2021-10-11 02:32:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:31,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2021-10-11 02:32:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:31,649 INFO L225 Difference]: With dead ends: 565 [2021-10-11 02:32:31,649 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:32:31,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:32:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2021-10-11 02:32:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:32:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 638 transitions. [2021-10-11 02:32:31,665 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 638 transitions. Word has length 89 [2021-10-11 02:32:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:31,666 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 638 transitions. [2021-10-11 02:32:31,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 638 transitions. [2021-10-11 02:32:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:32:31,668 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:31,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:31,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:32:31,880 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:31,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2134425529, now seen corresponding path program 1 times [2021-10-11 02:32:31,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:31,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730393468] [2021-10-11 02:32:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:31,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730393468] [2021-10-11 02:32:31,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:31,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:31,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70969677] [2021-10-11 02:32:31,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:31,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:31,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:31,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:31,947 INFO L87 Difference]: Start difference. First operand 403 states and 638 transitions. Second operand 3 states. [2021-10-11 02:32:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:32,404 INFO L93 Difference]: Finished difference Result 1045 states and 1726 transitions. [2021-10-11 02:32:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:32,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:32:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:32,409 INFO L225 Difference]: With dead ends: 1045 [2021-10-11 02:32:32,409 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:32:32,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:32,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:32:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:32:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:32:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1059 transitions. [2021-10-11 02:32:32,431 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1059 transitions. Word has length 103 [2021-10-11 02:32:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:32,431 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 1059 transitions. [2021-10-11 02:32:32,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:32,431 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1059 transitions. [2021-10-11 02:32:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:32:32,433 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:32,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:32,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:32:32,434 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:32,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:32,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2118168047, now seen corresponding path program 1 times [2021-10-11 02:32:32,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:32,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170215949] [2021-10-11 02:32:32,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:32,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170215949] [2021-10-11 02:32:32,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094472601] [2021-10-11 02:32:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:32,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:32,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:32:32,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:32:33,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:33,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:32:33,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560909229] [2021-10-11 02:32:33,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:33,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:33,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:33,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:33,063 INFO L87 Difference]: Start difference. First operand 643 states and 1059 transitions. Second operand 3 states. [2021-10-11 02:32:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:33,563 INFO L93 Difference]: Finished difference Result 1605 states and 2678 transitions. [2021-10-11 02:32:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:33,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:32:33,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:33,572 INFO L225 Difference]: With dead ends: 1605 [2021-10-11 02:32:33,572 INFO L226 Difference]: Without dead ends: 963 [2021-10-11 02:32:33,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-11 02:32:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 803. [2021-10-11 02:32:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-10-11 02:32:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1269 transitions. [2021-10-11 02:32:33,603 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1269 transitions. Word has length 107 [2021-10-11 02:32:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:33,604 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1269 transitions. [2021-10-11 02:32:33,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1269 transitions. [2021-10-11 02:32:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:32:33,610 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:33,611 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:33,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:33,825 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:33,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:33,826 INFO L82 PathProgramCache]: Analyzing trace with hash -440297125, now seen corresponding path program 1 times [2021-10-11 02:32:33,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:33,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29801723] [2021-10-11 02:32:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:32:33,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29801723] [2021-10-11 02:32:33,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:33,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:33,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550094248] [2021-10-11 02:32:33,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:33,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:33,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:33,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:33,885 INFO L87 Difference]: Start difference. First operand 803 states and 1269 transitions. Second operand 3 states. [2021-10-11 02:32:34,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:34,336 INFO L93 Difference]: Finished difference Result 1845 states and 2958 transitions. [2021-10-11 02:32:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:34,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:32:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:34,342 INFO L225 Difference]: With dead ends: 1845 [2021-10-11 02:32:34,343 INFO L226 Difference]: Without dead ends: 1043 [2021-10-11 02:32:34,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-11 02:32:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2021-10-11 02:32:34,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2021-10-11 02:32:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1530 transitions. [2021-10-11 02:32:34,380 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1530 transitions. Word has length 111 [2021-10-11 02:32:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:34,380 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1530 transitions. [2021-10-11 02:32:34,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:34,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1530 transitions. [2021-10-11 02:32:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-10-11 02:32:34,386 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:34,387 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:34,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:32:34,387 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:34,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1662260823, now seen corresponding path program 1 times [2021-10-11 02:32:34,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:34,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054493657] [2021-10-11 02:32:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-11 02:32:34,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054493657] [2021-10-11 02:32:34,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489000483] [2021-10-11 02:32:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:34,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:34,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:32:34,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:32:34,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:34,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:32:34,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164760050] [2021-10-11 02:32:34,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:34,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:34,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:34,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:34,982 INFO L87 Difference]: Start difference. First operand 1043 states and 1530 transitions. Second operand 3 states. [2021-10-11 02:32:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:35,218 INFO L93 Difference]: Finished difference Result 1925 states and 2798 transitions. [2021-10-11 02:32:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:35,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2021-10-11 02:32:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:35,223 INFO L225 Difference]: With dead ends: 1925 [2021-10-11 02:32:35,224 INFO L226 Difference]: Without dead ends: 883 [2021-10-11 02:32:35,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-11 02:32:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 563. [2021-10-11 02:32:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2021-10-11 02:32:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 779 transitions. [2021-10-11 02:32:35,246 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 779 transitions. Word has length 160 [2021-10-11 02:32:35,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:35,246 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 779 transitions. [2021-10-11 02:32:35,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 779 transitions. [2021-10-11 02:32:35,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-11 02:32:35,249 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:35,250 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:35,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:35,465 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:35,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1493744121, now seen corresponding path program 1 times [2021-10-11 02:32:35,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:35,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448612096] [2021-10-11 02:32:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:32:35,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448612096] [2021-10-11 02:32:35,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:35,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:35,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9030010] [2021-10-11 02:32:35,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:35,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:35,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:35,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:35,603 INFO L87 Difference]: Start difference. First operand 563 states and 779 transitions. Second operand 3 states. [2021-10-11 02:32:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:36,024 INFO L93 Difference]: Finished difference Result 1285 states and 1747 transitions. [2021-10-11 02:32:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:36,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-10-11 02:32:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:36,028 INFO L225 Difference]: With dead ends: 1285 [2021-10-11 02:32:36,029 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:32:36,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:36,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:32:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-11 02:32:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:32:36,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 611 transitions. [2021-10-11 02:32:36,044 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 611 transitions. Word has length 171 [2021-10-11 02:32:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:36,044 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 611 transitions. [2021-10-11 02:32:36,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:36,045 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 611 transitions. [2021-10-11 02:32:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-11 02:32:36,048 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:36,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:36,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:32:36,049 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:36,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:36,049 INFO L82 PathProgramCache]: Analyzing trace with hash 900317000, now seen corresponding path program 1 times [2021-10-11 02:32:36,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:36,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807309537] [2021-10-11 02:32:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:32:36,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807309537] [2021-10-11 02:32:36,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124689072] [2021-10-11 02:32:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:36,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:36,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:32:36,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:32:36,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:36,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:32:36,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032184022] [2021-10-11 02:32:36,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:36,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:36,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:36,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:36,647 INFO L87 Difference]: Start difference. First operand 483 states and 611 transitions. Second operand 3 states. [2021-10-11 02:32:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:36,979 INFO L93 Difference]: Finished difference Result 1205 states and 1548 transitions. [2021-10-11 02:32:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:36,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2021-10-11 02:32:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:36,984 INFO L225 Difference]: With dead ends: 1205 [2021-10-11 02:32:36,984 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:32:36,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:32:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-11 02:32:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:32:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 898 transitions. [2021-10-11 02:32:37,010 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 898 transitions. Word has length 177 [2021-10-11 02:32:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:37,011 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 898 transitions. [2021-10-11 02:32:37,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 898 transitions. [2021-10-11 02:32:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-10-11 02:32:37,014 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:37,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:37,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:37,229 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:37,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1214323182, now seen corresponding path program 1 times [2021-10-11 02:32:37,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:37,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194814664] [2021-10-11 02:32:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:32:37,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194814664] [2021-10-11 02:32:37,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653085042] [2021-10-11 02:32:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:37,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:37,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 02:32:37,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 02:32:37,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:37,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:32:37,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376034120] [2021-10-11 02:32:37,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:37,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:37,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:37,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:37,783 INFO L87 Difference]: Start difference. First operand 723 states and 898 transitions. Second operand 3 states. [2021-10-11 02:32:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:38,143 INFO L93 Difference]: Finished difference Result 1365 states and 1710 transitions. [2021-10-11 02:32:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:38,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2021-10-11 02:32:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:38,148 INFO L225 Difference]: With dead ends: 1365 [2021-10-11 02:32:38,148 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:32:38,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:38,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:32:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-11 02:32:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:32:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 878 transitions. [2021-10-11 02:32:38,168 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 878 transitions. Word has length 181 [2021-10-11 02:32:38,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:38,168 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 878 transitions. [2021-10-11 02:32:38,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:38,169 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 878 transitions. [2021-10-11 02:32:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-10-11 02:32:38,172 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:38,172 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:38,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:32:38,385 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -12486009, now seen corresponding path program 1 times [2021-10-11 02:32:38,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:38,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587011721] [2021-10-11 02:32:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-10-11 02:32:38,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587011721] [2021-10-11 02:32:38,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407591464] [2021-10-11 02:32:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:38,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:38,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:38,741 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-11 02:32:38,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-11 02:32:38,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:38,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:32:38,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003223037] [2021-10-11 02:32:38,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:38,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:38,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:38,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:38,988 INFO L87 Difference]: Start difference. First operand 723 states and 878 transitions. Second operand 3 states. [2021-10-11 02:32:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:39,363 INFO L93 Difference]: Finished difference Result 1683 states and 2085 transitions. [2021-10-11 02:32:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:39,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2021-10-11 02:32:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:39,364 INFO L225 Difference]: With dead ends: 1683 [2021-10-11 02:32:39,364 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:32:39,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:32:39,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:32:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:32:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:32:39,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 185 [2021-10-11 02:32:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:39,367 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:32:39,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:32:39,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:32:39,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:39,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:32:39,970 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-10-11 02:32:40,280 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-10-11 02:32:40,282 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:32:40,283 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:32:40,283 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:32:40,283 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:32:40,284 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:32:40,285 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:32:40,285 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:32:40,285 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:32:40,285 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:32:40,285 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:32:40,285 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:32:40,285 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:32:40,285 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:32:40,286 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:32:40,286 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:32:40,286 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:32:40,286 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:32:40,286 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:32:40,286 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:32:40,286 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:32:40,287 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:32:40,287 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:32:40,287 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:32:40,287 INFO L262 CegarLoopResult]: For program point L523-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:32:40,287 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:32:40,287 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:32:40,287 INFO L262 CegarLoopResult]: For program point L526-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:32:40,287 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:32:40,288 INFO L262 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2021-10-11 02:32:40,288 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:32:40,288 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:32:40,288 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 527) no Hoare annotation was computed. [2021-10-11 02:32:40,288 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:32:40,288 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:32:40,288 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:32:40,289 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:32:40,289 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:32:40,289 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:32:40,289 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:32:40,289 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:32:40,289 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:32:40,289 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:32:40,289 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:32:40,290 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:32:40,290 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:32:40,290 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:32:40,290 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:32:40,290 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:32:40,290 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (<= ~a28~0 10)) (.cse6 (= ~a11~0 0)) (.cse1 (<= ~a17~0 8))) (let ((.cse5 (= ~a19~0 1)) (.cse4 (<= ~a17~0 7)) (.cse0 (= ~a25~0 1)) (.cse3 (let ((.cse9 (<= ~a19~0 0))) (or (and .cse9 .cse1 .cse2) (and .cse9 .cse6 .cse1)))) (.cse7 (<= 8 ~a17~0)) (.cse8 (<= ~a25~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and (or (and .cse5 .cse6 .cse1) (and .cse5 .cse7 .cse1)) .cse0) (and (= ~a25~0 ~a11~0) .cse5 (<= ~a28~0 7) .cse4) (and (<= 9 ~a28~0) .cse4 .cse2 .cse8) (and .cse3 .cse8) (and .cse0 .cse3) (and .cse7 .cse1 .cse8 .cse2)))) [2021-10-11 02:32:40,291 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:32:40,291 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:32:40,291 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:32:40,291 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:32:40,291 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:32:40,291 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:32:40,291 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:32:40,292 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:32:40,292 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:32:40,292 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:32:40,292 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:32:40,292 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (<= ~a28~0 10)) (.cse6 (= ~a11~0 0)) (.cse1 (<= ~a17~0 8))) (let ((.cse5 (= ~a19~0 1)) (.cse4 (<= ~a17~0 7)) (.cse0 (= ~a25~0 1)) (.cse3 (let ((.cse9 (<= ~a19~0 0))) (or (and .cse9 .cse1 .cse2) (and .cse9 .cse6 .cse1)))) (.cse7 (<= 8 ~a17~0)) (.cse8 (<= ~a25~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and (or (and .cse5 .cse6 .cse1) (and .cse5 .cse7 .cse1)) .cse0) (and (= ~a25~0 ~a11~0) .cse5 (<= ~a28~0 7) .cse4) (and (<= 9 ~a28~0) .cse4 .cse2 .cse8) (and .cse3 .cse8) (and .cse0 .cse3) (and .cse7 .cse1 .cse8 .cse2)))) [2021-10-11 02:32:40,292 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:32:40,292 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:32:40,293 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:32:40,293 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:32:40,293 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:32:40,293 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:32:40,293 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:32:40,293 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:32:40,293 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:32:40,293 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:32:40,294 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:32:40,294 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:32:40,294 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:32:40,294 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:32:40,294 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:32:40,294 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:32:40,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:40 BoogieIcfgContainer [2021-10-11 02:32:40,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:40,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:40,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:40,316 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:40,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:28" (3/4) ... [2021-10-11 02:32:40,319 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:32:40,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:32:40,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:32:40,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:32:40,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:32:40,552 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11c8de0-5996-423d-af89-5cf10f2cc680/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:40,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:40,553 INFO L168 Benchmark]: Toolchain (without parser) took 15347.50 ms. Allocated memory was 113.2 MB in the beginning and 417.3 MB in the end (delta: 304.1 MB). Free memory was 83.2 MB in the beginning and 380.1 MB in the end (delta: -297.0 MB). Peak memory consumption was 247.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:40,553 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:40,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.59 ms. Allocated memory is still 113.2 MB. Free memory was 82.9 MB in the beginning and 72.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:40,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.37 ms. Allocated memory is still 113.2 MB. Free memory was 72.9 MB in the beginning and 67.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:40,555 INFO L168 Benchmark]: Boogie Preprocessor took 61.16 ms. Allocated memory is still 113.2 MB. Free memory was 67.4 MB in the beginning and 63.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:40,556 INFO L168 Benchmark]: RCFGBuilder took 2529.79 ms. Allocated memory was 113.2 MB in the beginning and 216.0 MB in the end (delta: 102.8 MB). Free memory was 62.8 MB in the beginning and 173.8 MB in the end (delta: -111.0 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:40,556 INFO L168 Benchmark]: TraceAbstraction took 11685.72 ms. Allocated memory was 216.0 MB in the beginning and 417.3 MB in the end (delta: 201.3 MB). Free memory was 173.8 MB in the beginning and 152.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 223.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:40,556 INFO L168 Benchmark]: Witness Printer took 236.80 ms. Allocated memory is still 417.3 MB. Free memory was 152.8 MB in the beginning and 380.1 MB in the end (delta: -227.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:40,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 708.59 ms. Allocated memory is still 113.2 MB. Free memory was 82.9 MB in the beginning and 72.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.37 ms. Allocated memory is still 113.2 MB. Free memory was 72.9 MB in the beginning and 67.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.16 ms. Allocated memory is still 113.2 MB. Free memory was 67.4 MB in the beginning and 63.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2529.79 ms. Allocated memory was 113.2 MB in the beginning and 216.0 MB in the end (delta: 102.8 MB). Free memory was 62.8 MB in the beginning and 173.8 MB in the end (delta: -111.0 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11685.72 ms. Allocated memory was 216.0 MB in the beginning and 417.3 MB in the end (delta: 201.3 MB). Free memory was 173.8 MB in the beginning and 152.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 223.3 MB. Max. memory is 16.1 GB. * Witness Printer took 236.80 ms. Allocated memory is still 417.3 MB. Free memory was 152.8 MB in the beginning and 380.1 MB in the end (delta: -227.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 527]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((a25 == 1 && a17 <= 8) && a28 <= 10) || ((((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a19 <= 0 && a11 == 0) && a17 <= 8)) && a17 <= 7)) || ((((a19 == 1 && a11 == 0) && a17 <= 8) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) && a25 == 1)) || (((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 7)) || (((9 <= a28 && a17 <= 7) && a28 <= 10) && a25 <= 0)) || ((((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a19 <= 0 && a11 == 0) && a17 <= 8)) && a25 <= 0)) || (a25 == 1 && (((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a19 <= 0 && a11 == 0) && a17 <= 8)))) || (((8 <= a17 && a17 <= 8) && a25 <= 0) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((a25 == 1 && a17 <= 8) && a28 <= 10) || ((((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a19 <= 0 && a11 == 0) && a17 <= 8)) && a17 <= 7)) || ((((a19 == 1 && a11 == 0) && a17 <= 8) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) && a25 == 1)) || (((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 7)) || (((9 <= a28 && a17 <= 7) && a28 <= 10) && a25 <= 0)) || ((((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a19 <= 0 && a11 == 0) && a17 <= 8)) && a25 <= 0)) || (a25 == 1 && (((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a19 <= 0 && a11 == 0) && a17 <= 8)))) || (((8 <= a17 && a17 <= 8) && a25 <= 0) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.8s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 743 SDtfs, 632 SDslu, 57 SDs, 0 SdLazy, 2429 SolverSat, 615 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1818 GetRequests, 1788 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1043occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 720 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 301 HoareAnnotationTreeSize, 3 FomulaSimplifications, 652 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 354 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2347 NumberOfCodeBlocks, 2347 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3223 ConstructedInterpolants, 0 QuantifiedInterpolants, 1004351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2043 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 23 InterpolantComputations, 17 PerfectInterpolantSequences, 1848/1885 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 correct! Received shutdown request...