./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label22.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_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/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_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/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_3e31661b-9d72-4f16-80a0-720acbbea6bf/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 e337846cb6422c78c02a79ae7748bdbce67db4c4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:28:36,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:36,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:36,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:36,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:36,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:36,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:36,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:36,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:36,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:36,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:36,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:36,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:36,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:36,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:36,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:36,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:36,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:36,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:36,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:36,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:36,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:36,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:36,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:36,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:36,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:36,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:36,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:36,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:36,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:36,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:36,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:36,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:36,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:36,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:36,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:36,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:36,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:36,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:36,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:36,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:36,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:36,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:36,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:36,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:36,843 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:36,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:36,844 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:36,844 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:36,844 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:36,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:36,845 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:36,845 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:36,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:36,846 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:36,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:36,846 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:36,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:36,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:36,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:36,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:36,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:36,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:36,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:36,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:36,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:36,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:36,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:36,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:36,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:36,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:36,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:36,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:36,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:36,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:36,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:36,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:36,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:36,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:36,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:36,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:36,854 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_3e31661b-9d72-4f16-80a0-720acbbea6bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e337846cb6422c78c02a79ae7748bdbce67db4c4 [2021-10-11 02:28:37,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:37,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:37,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:37,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:37,143 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:37,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label22.c [2021-10-11 02:28:37,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/data/e70d00634/1a6cad635bea430cb6397b543766e31e/FLAGdc1794157 [2021-10-11 02:28:37,803 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:37,804 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/sv-benchmarks/c/eca-rers2012/Problem01_label22.c [2021-10-11 02:28:37,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/data/e70d00634/1a6cad635bea430cb6397b543766e31e/FLAGdc1794157 [2021-10-11 02:28:38,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/data/e70d00634/1a6cad635bea430cb6397b543766e31e [2021-10-11 02:28:38,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:38,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:38,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:38,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:38,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:38,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9582056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38, skipping insertion in model container [2021-10-11 02:28:38,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:38,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:38,557 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_3e31661b-9d72-4f16-80a0-720acbbea6bf/sv-benchmarks/c/eca-rers2012/Problem01_label22.c[21338,21351] [2021-10-11 02:28:38,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:38,583 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:38,718 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_3e31661b-9d72-4f16-80a0-720acbbea6bf/sv-benchmarks/c/eca-rers2012/Problem01_label22.c[21338,21351] [2021-10-11 02:28:38,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:38,748 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:38,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38 WrapperNode [2021-10-11 02:28:38,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:38,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:38,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:38,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:38,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:38,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:38,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:38,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:38,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2021-10-11 02:28:38,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:38,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:38,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:38,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:38,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/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 02:28:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:41,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:41,279 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:41,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:41 BoogieIcfgContainer [2021-10-11 02:28:41,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:41,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:41,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:41,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:41,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:38" (1/3) ... [2021-10-11 02:28:41,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea3e9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:41, skipping insertion in model container [2021-10-11 02:28:41,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (2/3) ... [2021-10-11 02:28:41,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea3e9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:41, skipping insertion in model container [2021-10-11 02:28:41,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:41" (3/3) ... [2021-10-11 02:28:41,293 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2021-10-11 02:28:41,310 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:41,314 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:41,324 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:41,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:41,361 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:41,362 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:41,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:41,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:41,362 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:41,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:41,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:28:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:28:41,390 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:41,391 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] [2021-10-11 02:28:41,391 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1806905176, now seen corresponding path program 1 times [2021-10-11 02:28:41,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:41,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147876351] [2021-10-11 02:28:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:41,972 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 02:28:41,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147876351] [2021-10-11 02:28:41,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:41,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:41,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544344986] [2021-10-11 02:28:41,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:41,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:41,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:41,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:41,998 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:28:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:42,857 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:28:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:42,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:28:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:42,872 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:28:42,872 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:28:42,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:28:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:28:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:28:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:28:42,928 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:28:42,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:42,929 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:28:42,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:42,929 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:28:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:28:42,934 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:42,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:42,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:42,935 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:42,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1703770311, now seen corresponding path program 1 times [2021-10-11 02:28:42,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:42,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300609016] [2021-10-11 02:28:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:43,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300609016] [2021-10-11 02:28:43,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:43,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:43,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481565365] [2021-10-11 02:28:43,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:43,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:43,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:43,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:43,166 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:28:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:43,859 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-11 02:28:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:43,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:28:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:43,863 INFO L225 Difference]: With dead ends: 500 [2021-10-11 02:28:43,863 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:28:43,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:28:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-11 02:28:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:28:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:28:43,882 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:28:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:43,882 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:28:43,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:28:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:28:43,887 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:43,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:43,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:43,887 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:43,888 INFO L82 PathProgramCache]: Analyzing trace with hash 350106231, now seen corresponding path program 1 times [2021-10-11 02:28:43,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:43,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567901738] [2021-10-11 02:28:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:43,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567901738] [2021-10-11 02:28:43,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:43,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:43,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051834849] [2021-10-11 02:28:43,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:43,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:43,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:43,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:43,989 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:28:44,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:44,492 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:28:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:44,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:28:44,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:44,495 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:28:44,495 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:28:44,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:28:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:28:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:28:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2021-10-11 02:28:44,517 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2021-10-11 02:28:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:44,518 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2021-10-11 02:28:44,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2021-10-11 02:28:44,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:28:44,524 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:44,525 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:44,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:44,525 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:44,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash -785760459, now seen corresponding path program 1 times [2021-10-11 02:28:44,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:44,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885898854] [2021-10-11 02:28:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:28:44,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885898854] [2021-10-11 02:28:44,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:44,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:44,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161020781] [2021-10-11 02:28:44,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:44,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:44,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:44,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:44,595 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2021-10-11 02:28:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:44,961 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2021-10-11 02:28:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:44,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:28:44,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:44,967 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:28:44,967 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:28:44,970 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 02:28:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:28:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:28:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:28:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2021-10-11 02:28:45,017 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 111 [2021-10-11 02:28:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:45,018 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2021-10-11 02:28:45,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2021-10-11 02:28:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-11 02:28:45,034 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:45,034 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:45,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:45,035 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:45,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1896314937, now seen corresponding path program 1 times [2021-10-11 02:28:45,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:45,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644278553] [2021-10-11 02:28:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:28:45,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644278553] [2021-10-11 02:28:45,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:45,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:45,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304798163] [2021-10-11 02:28:45,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:45,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:45,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:45,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:45,186 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2021-10-11 02:28:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:45,694 INFO L93 Difference]: Finished difference Result 1283 states and 1752 transitions. [2021-10-11 02:28:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:45,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2021-10-11 02:28:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:45,699 INFO L225 Difference]: With dead ends: 1283 [2021-10-11 02:28:45,700 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:28:45,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:28:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2021-10-11 02:28:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:28:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2021-10-11 02:28:45,721 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2021-10-11 02:28:45,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:45,721 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2021-10-11 02:28:45,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2021-10-11 02:28:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-11 02:28:45,724 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:45,724 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:45,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:28:45,724 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:45,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1126651562, now seen corresponding path program 1 times [2021-10-11 02:28:45,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:45,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679422582] [2021-10-11 02:28:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:28:45,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679422582] [2021-10-11 02:28:45,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:45,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:45,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994718689] [2021-10-11 02:28:45,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:45,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:45,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:45,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:45,859 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2021-10-11 02:28:46,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:46,430 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2021-10-11 02:28:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:46,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2021-10-11 02:28:46,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:46,436 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:28:46,436 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:28:46,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:28:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:28:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:28:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2021-10-11 02:28:46,459 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2021-10-11 02:28:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:46,459 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2021-10-11 02:28:46,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2021-10-11 02:28:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-10-11 02:28:46,463 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:46,463 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:46,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:28:46,463 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:46,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1220407809, now seen corresponding path program 1 times [2021-10-11 02:28:46,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:46,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914800163] [2021-10-11 02:28:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:28:46,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914800163] [2021-10-11 02:28:46,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:46,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:46,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106222596] [2021-10-11 02:28:46,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:46,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:46,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:46,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:46,580 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2021-10-11 02:28:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:46,941 INFO L93 Difference]: Finished difference Result 1709 states and 2194 transitions. [2021-10-11 02:28:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:46,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2021-10-11 02:28:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:46,948 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:28:46,948 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:28:46,949 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 02:28:46,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:28:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-11 02:28:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:28:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1015 transitions. [2021-10-11 02:28:46,972 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1015 transitions. Word has length 167 [2021-10-11 02:28:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:46,972 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1015 transitions. [2021-10-11 02:28:46,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1015 transitions. [2021-10-11 02:28:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-10-11 02:28:46,976 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:46,976 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:46,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:28:46,977 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:46,977 INFO L82 PathProgramCache]: Analyzing trace with hash 827199775, now seen corresponding path program 1 times [2021-10-11 02:28:46,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:46,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120163891] [2021-10-11 02:28:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-11 02:28:47,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120163891] [2021-10-11 02:28:47,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:47,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:28:47,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243308157] [2021-10-11 02:28:47,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:47,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:47,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:47,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:47,174 INFO L87 Difference]: Start difference. First operand 784 states and 1015 transitions. Second operand 5 states. [2021-10-11 02:28:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:47,682 INFO L93 Difference]: Finished difference Result 1733 states and 2206 transitions. [2021-10-11 02:28:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:47,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2021-10-11 02:28:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:47,688 INFO L225 Difference]: With dead ends: 1733 [2021-10-11 02:28:47,688 INFO L226 Difference]: Without dead ends: 950 [2021-10-11 02:28:47,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2021-10-11 02:28:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2021-10-11 02:28:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:28:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2021-10-11 02:28:47,713 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 210 [2021-10-11 02:28:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:47,714 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2021-10-11 02:28:47,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2021-10-11 02:28:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-10-11 02:28:47,718 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:47,718 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:47,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:28:47,718 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:47,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1307985472, now seen corresponding path program 1 times [2021-10-11 02:28:47,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:47,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984278805] [2021-10-11 02:28:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-11 02:28:47,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984278805] [2021-10-11 02:28:47,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:47,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:47,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107564623] [2021-10-11 02:28:47,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:47,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:47,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:47,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:47,882 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2021-10-11 02:28:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:48,252 INFO L93 Difference]: Finished difference Result 1851 states and 2331 transitions. [2021-10-11 02:28:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:48,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2021-10-11 02:28:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:48,259 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:28:48,259 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:28:48,261 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 02:28:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:28:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:28:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:28:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2021-10-11 02:28:48,294 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 223 [2021-10-11 02:28:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:48,294 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2021-10-11 02:28:48,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2021-10-11 02:28:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-11 02:28:48,301 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:48,301 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:48,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:28:48,302 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:48,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1135208920, now seen corresponding path program 1 times [2021-10-11 02:28:48,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:48,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69073946] [2021-10-11 02:28:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 260 proven. 55 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:28:48,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69073946] [2021-10-11 02:28:48,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037987019] [2021-10-11 02:28:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/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 02:28:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:48,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:48,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-10-11 02:28:49,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-10-11 02:28:49,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:49,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:28:49,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719635642] [2021-10-11 02:28:49,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:49,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:49,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:49,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:49,454 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2021-10-11 02:28:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:49,818 INFO L93 Difference]: Finished difference Result 2277 states and 2800 transitions. [2021-10-11 02:28:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:49,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2021-10-11 02:28:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:49,826 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:28:49,826 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:28:49,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 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 02:28:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:28:49,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2021-10-11 02:28:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:28:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1324 transitions. [2021-10-11 02:28:49,862 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1324 transitions. Word has length 232 [2021-10-11 02:28:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:49,862 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1324 transitions. [2021-10-11 02:28:49,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1324 transitions. [2021-10-11 02:28:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-10-11 02:28:49,867 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:49,868 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:50,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:28:50,094 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash -2016726954, now seen corresponding path program 1 times [2021-10-11 02:28:50,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:50,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808854651] [2021-10-11 02:28:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-11 02:28:50,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808854651] [2021-10-11 02:28:50,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:50,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:50,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714861078] [2021-10-11 02:28:50,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:50,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:50,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:50,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:50,300 INFO L87 Difference]: Start difference. First operand 1068 states and 1324 transitions. Second operand 3 states. [2021-10-11 02:28:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:50,674 INFO L93 Difference]: Finished difference Result 2206 states and 2763 transitions. [2021-10-11 02:28:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:50,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2021-10-11 02:28:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:50,683 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:28:50,683 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:28:50,685 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 02:28:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:28:50,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2021-10-11 02:28:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:28:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2021-10-11 02:28:50,718 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 235 [2021-10-11 02:28:50,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:50,718 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2021-10-11 02:28:50,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2021-10-11 02:28:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-10-11 02:28:50,723 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:50,724 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:50,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:28:50,724 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:50,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:50,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1646211696, now seen corresponding path program 1 times [2021-10-11 02:28:50,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:50,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919481102] [2021-10-11 02:28:50,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:28:51,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919481102] [2021-10-11 02:28:51,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748375740] [2021-10-11 02:28:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/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 02:28:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:51,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:51,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:28:51,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:28:51,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:51,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2021-10-11 02:28:51,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685256755] [2021-10-11 02:28:51,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:51,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:51,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:51,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:51,941 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 3 states. [2021-10-11 02:28:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:52,316 INFO L93 Difference]: Finished difference Result 2346 states and 2883 transitions. [2021-10-11 02:28:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:52,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2021-10-11 02:28:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:52,318 INFO L225 Difference]: With dead ends: 2346 [2021-10-11 02:28:52,318 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:52,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:52,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2021-10-11 02:28:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:52,322 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:52,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:52,322 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:52,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:28:52,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:52,775 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 25 [2021-10-11 02:28:52,890 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 25 [2021-10-11 02:28:52,893 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:28:52,894 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:28:52,894 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:28:52,894 INFO L262 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:28:52,894 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:28:52,894 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:28:52,894 INFO L262 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2021-10-11 02:28:52,894 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:28:52,895 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:28:52,896 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:28:52,896 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:28:52,896 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:28:52,896 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:28:52,896 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:28:52,896 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:28:52,896 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:28:52,896 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:28:52,897 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:28:52,898 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:28:52,898 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:28:52,898 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:28:52,898 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:28:52,898 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:52,898 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:28:52,903 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:28:52,903 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:28:52,904 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse1 (= ~a16~0 6)) (.cse3 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1)) (.cse4 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2 (<= 15 ~a8~0)) (and .cse0 (= ~a20~0 1) .cse2) (and .cse1 .cse3) (and .cse4 .cse3) (and .cse0 .cse4))) [2021-10-11 02:28:52,904 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:28:52,905 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:28:52,905 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:28:52,905 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:28:52,905 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:28:52,905 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:28:52,905 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:28:52,905 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:52,905 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:28:52,906 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:28:52,906 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:28:52,906 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:28:52,906 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:28:52,906 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:28:52,906 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:28:52,906 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:28:52,906 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:28:52,906 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:28:52,907 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:28:52,907 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:28:52,907 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:28:52,907 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:28:52,907 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:28:52,907 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse1 (= ~a16~0 6)) (.cse3 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1)) (.cse4 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2 (<= 15 ~a8~0)) (and .cse0 (= ~a20~0 1) .cse2) (and .cse1 .cse3) (and .cse4 .cse3) (and .cse0 .cse4))) [2021-10-11 02:28:52,907 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:28:52,907 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2021-10-11 02:28:52,908 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:28:52,908 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:28:52,908 INFO L262 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:28:52,908 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:28:52,908 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:28:52,908 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:28:52,908 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:28:52,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:52 BoogieIcfgContainer [2021-10-11 02:28:52,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:52,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:52,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:52,946 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:52,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:41" (3/4) ... [2021-10-11 02:28:52,949 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:52,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:28:52,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:28:52,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:28:52,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:28:53,129 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e31661b-9d72-4f16-80a0-720acbbea6bf/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:53,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:53,130 INFO L168 Benchmark]: Toolchain (without parser) took 15069.46 ms. Allocated memory was 88.1 MB in the beginning and 444.6 MB in the end (delta: 356.5 MB). Free memory was 52.4 MB in the beginning and 241.3 MB in the end (delta: -188.8 MB). Peak memory consumption was 168.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:53,131 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 60.0 MB in the beginning and 60.0 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:53,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.23 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 52.1 MB in the beginning and 79.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:53,132 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.87 ms. Allocated memory is still 119.5 MB. Free memory was 79.9 MB in the beginning and 74.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:53,132 INFO L168 Benchmark]: Boogie Preprocessor took 123.29 ms. Allocated memory is still 119.5 MB. Free memory was 74.2 MB in the beginning and 70.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:53,132 INFO L168 Benchmark]: RCFGBuilder took 2309.49 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 69.4 MB in the beginning and 79.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:53,133 INFO L168 Benchmark]: TraceAbstraction took 11659.53 ms. Allocated memory was 155.2 MB in the beginning and 444.6 MB in the end (delta: 289.4 MB). Free memory was 79.6 MB in the beginning and 255.9 MB in the end (delta: -176.4 MB). Peak memory consumption was 113.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:53,133 INFO L168 Benchmark]: Witness Printer took 184.43 ms. Allocated memory is still 444.6 MB. Free memory was 255.9 MB in the beginning and 241.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:53,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 60.0 MB in the beginning and 60.0 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 683.23 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 52.1 MB in the beginning and 79.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.87 ms. Allocated memory is still 119.5 MB. Free memory was 79.9 MB in the beginning and 74.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 123.29 ms. Allocated memory is still 119.5 MB. Free memory was 74.2 MB in the beginning and 70.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2309.49 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 69.4 MB in the beginning and 79.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11659.53 ms. Allocated memory was 155.2 MB in the beginning and 444.6 MB in the end (delta: 289.4 MB). Free memory was 79.6 MB in the beginning and 255.9 MB in the end (delta: -176.4 MB). Peak memory consumption was 113.1 MB. Max. memory is 16.1 GB. * Witness Printer took 184.43 ms. Allocated memory is still 444.6 MB. Free memory was 255.9 MB in the beginning and 241.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 567]: 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: 40]: Loop Invariant Derived loop invariant: ((((((a21 == 1 && a16 == 6) && !(a7 == 1)) && 15 <= a8) || ((a21 == 1 && a20 == 1) && !(a7 == 1))) || (a16 == 6 && a8 <= 13)) || (a16 <= 5 && a8 <= 13)) || (a21 == 1 && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a21 == 1 && a16 == 6) && !(a7 == 1)) && 15 <= a8) || ((a21 == 1 && a20 == 1) && !(a7 == 1))) || (a16 == 6 && a8 <= 13)) || (a16 <= 5 && a8 <= 13)) || (a21 == 1 && a16 <= 5) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.1s, OverallIterations: 12, TraceHistogramMax: 8, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 593 SDtfs, 1111 SDslu, 71 SDs, 0 SdLazy, 3128 SolverSat, 790 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 988 GetRequests, 960 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 805 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 44 NumberOfFragments, 95 HoareAnnotationTreeSize, 3 FomulaSimplifications, 12606 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 676 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 2381 NumberOfCodeBlocks, 2381 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2838 ConstructedInterpolants, 0 QuantifiedInterpolants, 1594452 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1107 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 3746/3943 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...