./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4dd87ffa8279e5be73819f1eecf23f4704317559faef100e8eb60d719eb066b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:39:37,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:39:37,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:39:37,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:39:37,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:39:37,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:39:37,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:39:37,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:39:37,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:39:37,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:39:37,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:39:37,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:39:37,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:39:37,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:39:37,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:39:37,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:39:37,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:39:37,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:39:37,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:39:37,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:39:37,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:39:37,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:39:37,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:39:37,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:39:37,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:39:37,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:39:37,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:39:37,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:39:37,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:39:37,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:39:37,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:39:37,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:39:37,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:39:37,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:39:37,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:39:37,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:39:37,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:39:37,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:39:37,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:39:37,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:39:37,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:39:37,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:39:37,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:39:37,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:39:37,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:39:37,867 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:39:37,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:39:37,867 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:39:37,868 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:39:37,868 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:39:37,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:39:37,869 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:39:37,869 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:39:37,869 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:39:37,870 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:39:37,870 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:39:37,870 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:39:37,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:39:37,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:39:37,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:39:37,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:39:37,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:39:37,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:39:37,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:39:37,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:39:37,873 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:39:37,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:39:37,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:39:37,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:39:37,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:39:37,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:39:37,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:39:37,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:37,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:39:37,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:39:37,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:39:37,877 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:39:37,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:39:37,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:39:37,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:39:37,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:39:37,878 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_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4dd87ffa8279e5be73819f1eecf23f4704317559faef100e8eb60d719eb066b [2021-11-03 04:39:38,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:39:38,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:39:38,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:39:38,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:39:38,159 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:39:38,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/eca-rers2012/Problem01_label31.c [2021-11-03 04:39:38,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/data/1146d4fc1/dde80504ad774562a86d43821441e22d/FLAG73bc2bcce [2021-11-03 04:39:38,786 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:39:38,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/sv-benchmarks/c/eca-rers2012/Problem01_label31.c [2021-11-03 04:39:38,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/data/1146d4fc1/dde80504ad774562a86d43821441e22d/FLAG73bc2bcce [2021-11-03 04:39:39,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/data/1146d4fc1/dde80504ad774562a86d43821441e22d [2021-11-03 04:39:39,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:39:39,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:39:39,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:39,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:39:39,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:39:39,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21059df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39, skipping insertion in model container [2021-11-03 04:39:39,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:39:39,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:39,535 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/sv-benchmarks/c/eca-rers2012/Problem01_label31.c[16993,17006] [2021-11-03 04:39:39,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:39,584 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:39:39,695 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/sv-benchmarks/c/eca-rers2012/Problem01_label31.c[16993,17006] [2021-11-03 04:39:39,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:39,742 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:39:39,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39 WrapperNode [2021-11-03 04:39:39,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:39,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:39:39,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:39:39,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:39:39,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:39:39,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:39:39,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:39:39,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:39:39,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:39:39,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:39:39,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:39:39,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:39:39,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (1/1) ... [2021-11-03 04:39:39,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:39,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:40,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:39:40,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:39:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:39:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:39:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:39:40,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:39:41,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:39:41,869 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:39:41,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:41 BoogieIcfgContainer [2021-11-03 04:39:41,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:39:41,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:39:41,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:39:41,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:39:41,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:39:39" (1/3) ... [2021-11-03 04:39:41,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e2640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:41, skipping insertion in model container [2021-11-03 04:39:41,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:39" (2/3) ... [2021-11-03 04:39:41,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e2640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:41, skipping insertion in model container [2021-11-03 04:39:41,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:41" (3/3) ... [2021-11-03 04:39:41,879 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2021-11-03 04:39:41,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:39:41,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:39:41,931 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:39:41,937 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:39:41,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:39:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:39:41,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:41,962 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:41,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash 379011262, now seen corresponding path program 1 times [2021-11-03 04:39:41,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:41,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145952864] [2021-11-03 04:39:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:41,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:42,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:42,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145952864] [2021-11-03 04:39:42,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145952864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:42,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:42,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:39:42,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839116716] [2021-11-03 04:39:42,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:42,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:42,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:42,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:42,471 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:42,919 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-11-03 04:39:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:42,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:39:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:42,933 INFO L225 Difference]: With dead ends: 224 [2021-11-03 04:39:42,933 INFO L226 Difference]: Without dead ends: 145 [2021-11-03 04:39:42,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-03 04:39:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-03 04:39:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8819444444444444) internal successors, (271), 144 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2021-11-03 04:39:42,982 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2021-11-03 04:39:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:42,983 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2021-11-03 04:39:42,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2021-11-03 04:39:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 04:39:42,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:42,987 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-11-03 04:39:42,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:39:42,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:42,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1708118262, now seen corresponding path program 1 times [2021-11-03 04:39:42,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:42,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367633877] [2021-11-03 04:39:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:42,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:43,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:43,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367633877] [2021-11-03 04:39:43,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367633877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:43,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:43,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:39:43,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195823250] [2021-11-03 04:39:43,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:43,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:43,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:43,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:43,111 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:43,559 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2021-11-03 04:39:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-03 04:39:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:43,564 INFO L225 Difference]: With dead ends: 431 [2021-11-03 04:39:43,564 INFO L226 Difference]: Without dead ends: 287 [2021-11-03 04:39:43,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-03 04:39:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-03 04:39:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.7622377622377623) internal successors, (504), 286 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2021-11-03 04:39:43,624 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2021-11-03 04:39:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:43,625 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2021-11-03 04:39:43,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2021-11-03 04:39:43,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:39:43,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:43,642 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:43,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:39:43,643 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:43,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash 714029981, now seen corresponding path program 1 times [2021-11-03 04:39:43,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:43,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689485085] [2021-11-03 04:39:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:43,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:43,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:43,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689485085] [2021-11-03 04:39:43,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689485085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:43,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:43,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:39:43,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13985898] [2021-11-03 04:39:43,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:43,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:43,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:43,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:43,804 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:44,237 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2021-11-03 04:39:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:44,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 04:39:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:44,242 INFO L225 Difference]: With dead ends: 786 [2021-11-03 04:39:44,243 INFO L226 Difference]: Without dead ends: 500 [2021-11-03 04:39:44,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:44,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-03 04:39:44,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2021-11-03 04:39:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5934579439252337) internal successors, (682), 428 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 682 transitions. [2021-11-03 04:39:44,297 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 682 transitions. Word has length 86 [2021-11-03 04:39:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:44,298 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 682 transitions. [2021-11-03 04:39:44,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 682 transitions. [2021-11-03 04:39:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 04:39:44,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:44,301 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:44,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:39:44,301 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash 763839277, now seen corresponding path program 1 times [2021-11-03 04:39:44,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:44,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356533832] [2021-11-03 04:39:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:44,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:39:44,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:44,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356533832] [2021-11-03 04:39:44,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356533832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:44,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:44,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:39:44,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896694239] [2021-11-03 04:39:44,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:44,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:44,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:44,406 INFO L87 Difference]: Start difference. First operand 429 states and 682 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:44,766 INFO L93 Difference]: Finished difference Result 999 states and 1596 transitions. [2021-11-03 04:39:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:44,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 04:39:44,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:44,770 INFO L225 Difference]: With dead ends: 999 [2021-11-03 04:39:44,770 INFO L226 Difference]: Without dead ends: 571 [2021-11-03 04:39:44,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:44,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-03 04:39:44,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-11-03 04:39:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5105263157894737) internal successors, (861), 570 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 861 transitions. [2021-11-03 04:39:44,798 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 861 transitions. Word has length 87 [2021-11-03 04:39:44,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:44,799 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 861 transitions. [2021-11-03 04:39:44,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 861 transitions. [2021-11-03 04:39:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 04:39:44,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:44,801 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:44,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:39:44,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2013622683, now seen corresponding path program 1 times [2021-11-03 04:39:44,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:44,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029444358] [2021-11-03 04:39:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:44,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:44,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:44,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029444358] [2021-11-03 04:39:44,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029444358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:44,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:44,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:39:44,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237971789] [2021-11-03 04:39:44,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:44,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:44,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:44,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:44,948 INFO L87 Difference]: Start difference. First operand 571 states and 861 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:45,548 INFO L93 Difference]: Finished difference Result 1425 states and 2113 transitions. [2021-11-03 04:39:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:45,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-03 04:39:45,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:45,563 INFO L225 Difference]: With dead ends: 1425 [2021-11-03 04:39:45,564 INFO L226 Difference]: Without dead ends: 855 [2021-11-03 04:39:45,565 INFO L786 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 [2021-11-03 04:39:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-03 04:39:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-11-03 04:39:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4559386973180077) internal successors, (1140), 783 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1140 transitions. [2021-11-03 04:39:45,609 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1140 transitions. Word has length 90 [2021-11-03 04:39:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:45,610 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1140 transitions. [2021-11-03 04:39:45,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1140 transitions. [2021-11-03 04:39:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 04:39:45,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:45,613 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-03 04:39:45,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:39:45,614 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 683568294, now seen corresponding path program 1 times [2021-11-03 04:39:45,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:45,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920940965] [2021-11-03 04:39:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:45,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:45,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:45,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920940965] [2021-11-03 04:39:45,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920940965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:45,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:45,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:39:45,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056552682] [2021-11-03 04:39:45,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:45,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:45,716 INFO L87 Difference]: Start difference. First operand 784 states and 1140 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:46,024 INFO L93 Difference]: Finished difference Result 1567 states and 2279 transitions. [2021-11-03 04:39:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 04:39:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:46,033 INFO L225 Difference]: With dead ends: 1567 [2021-11-03 04:39:46,033 INFO L226 Difference]: Without dead ends: 784 [2021-11-03 04:39:46,035 INFO L786 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 [2021-11-03 04:39:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-11-03 04:39:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 642. [2021-11-03 04:39:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.329173166926677) internal successors, (852), 641 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 852 transitions. [2021-11-03 04:39:46,060 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 852 transitions. Word has length 108 [2021-11-03 04:39:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:46,062 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 852 transitions. [2021-11-03 04:39:46,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 852 transitions. [2021-11-03 04:39:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-03 04:39:46,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:46,069 INFO L513 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:46,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:39:46,069 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:46,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1573514720, now seen corresponding path program 1 times [2021-11-03 04:39:46,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:46,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295577151] [2021-11-03 04:39:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:46,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:39:46,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:46,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295577151] [2021-11-03 04:39:46,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295577151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:46,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:46,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:39:46,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106169255] [2021-11-03 04:39:46,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:46,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:46,197 INFO L87 Difference]: Start difference. First operand 642 states and 852 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:46,773 INFO L93 Difference]: Finished difference Result 1567 states and 2095 transitions. [2021-11-03 04:39:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:46,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-03 04:39:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:46,779 INFO L225 Difference]: With dead ends: 1567 [2021-11-03 04:39:46,779 INFO L226 Difference]: Without dead ends: 926 [2021-11-03 04:39:46,781 INFO L786 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 [2021-11-03 04:39:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-11-03 04:39:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-11-03 04:39:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2822014051522248) internal successors, (1095), 854 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1095 transitions. [2021-11-03 04:39:46,807 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1095 transitions. Word has length 145 [2021-11-03 04:39:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:46,807 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1095 transitions. [2021-11-03 04:39:46,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1095 transitions. [2021-11-03 04:39:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-03 04:39:46,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:46,811 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:46,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:39:46,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:46,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:46,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1653698687, now seen corresponding path program 1 times [2021-11-03 04:39:46,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:46,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581554539] [2021-11-03 04:39:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:46,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 106 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:39:46,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:46,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581554539] [2021-11-03 04:39:46,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581554539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:39:46,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736092512] [2021-11-03 04:39:46,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:46,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:39:46,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:46,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:39:46,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:39:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:47,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:47,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-03 04:39:47,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-03 04:39:48,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736092512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:48,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:39:48,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-11-03 04:39:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918801545] [2021-11-03 04:39:48,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:48,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:48,070 INFO L87 Difference]: Start difference. First operand 855 states and 1095 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:48,382 INFO L93 Difference]: Finished difference Result 1354 states and 1702 transitions. [2021-11-03 04:39:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:48,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-03 04:39:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:48,391 INFO L225 Difference]: With dead ends: 1354 [2021-11-03 04:39:48,392 INFO L226 Difference]: Without dead ends: 1352 [2021-11-03 04:39:48,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-11-03 04:39:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2021-11-03 04:39:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 1.2583271650629164) internal successors, (1700), 1351 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1700 transitions. [2021-11-03 04:39:48,435 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1700 transitions. Word has length 158 [2021-11-03 04:39:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:48,436 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1700 transitions. [2021-11-03 04:39:48,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1700 transitions. [2021-11-03 04:39:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-03 04:39:48,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:48,441 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 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, 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] [2021-11-03 04:39:48,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:48,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-03 04:39:48,659 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:48,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:48,659 INFO L85 PathProgramCache]: Analyzing trace with hash -274598669, now seen corresponding path program 1 times [2021-11-03 04:39:48,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:48,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900546053] [2021-11-03 04:39:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:48,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-03 04:39:48,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:48,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900546053] [2021-11-03 04:39:48,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900546053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:48,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:48,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:39:48,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559446202] [2021-11-03 04:39:48,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:48,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:48,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:48,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:48,765 INFO L87 Difference]: Start difference. First operand 1352 states and 1700 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:49,094 INFO L93 Difference]: Finished difference Result 2987 states and 3767 transitions. [2021-11-03 04:39:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:49,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-11-03 04:39:49,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:49,104 INFO L225 Difference]: With dead ends: 2987 [2021-11-03 04:39:49,104 INFO L226 Difference]: Without dead ends: 1494 [2021-11-03 04:39:49,106 INFO L786 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 [2021-11-03 04:39:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-11-03 04:39:49,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1352. [2021-11-03 04:39:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 1.151739452257587) internal successors, (1556), 1351 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1556 transitions. [2021-11-03 04:39:49,146 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1556 transitions. Word has length 175 [2021-11-03 04:39:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:49,147 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1556 transitions. [2021-11-03 04:39:49,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1556 transitions. [2021-11-03 04:39:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-03 04:39:49,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:49,152 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:39:49,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 04:39:49,152 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:49,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1572857775, now seen corresponding path program 1 times [2021-11-03 04:39:49,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:49,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280718058] [2021-11-03 04:39:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:49,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 156 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-03 04:39:49,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:49,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280718058] [2021-11-03 04:39:49,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280718058] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:39:49,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611830200] [2021-11-03 04:39:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:49,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:39:49,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:49,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:39:49,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:39:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:49,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:49,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-03 04:39:49,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-03 04:39:50,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611830200] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:50,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:39:50,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-11-03 04:39:50,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007487360] [2021-11-03 04:39:50,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:50,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:50,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:50,420 INFO L87 Difference]: Start difference. First operand 1352 states and 1556 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:50,716 INFO L93 Difference]: Finished difference Result 3058 states and 3527 transitions. [2021-11-03 04:39:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:50,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-11-03 04:39:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:50,727 INFO L225 Difference]: With dead ends: 3058 [2021-11-03 04:39:50,727 INFO L226 Difference]: Without dead ends: 1707 [2021-11-03 04:39:50,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 388 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-03 04:39:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1636. [2021-11-03 04:39:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.1535168195718655) internal successors, (1886), 1635 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1886 transitions. [2021-11-03 04:39:50,777 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1886 transitions. Word has length 195 [2021-11-03 04:39:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:50,778 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 1886 transitions. [2021-11-03 04:39:50,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1886 transitions. [2021-11-03 04:39:50,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-03 04:39:50,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:50,784 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2021-11-03 04:39:50,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:50,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-03 04:39:50,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:50,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash -745261729, now seen corresponding path program 1 times [2021-11-03 04:39:50,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:39:50,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639527242] [2021-11-03 04:39:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:51,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:39:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 161 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-03 04:39:51,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:39:51,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639527242] [2021-11-03 04:39:51,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639527242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:39:51,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711401866] [2021-11-03 04:39:51,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:51,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:39:51,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:51,097 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:39:51,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:39:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:51,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:51,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-03 04:39:51,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-03 04:39:52,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711401866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:52,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:39:52,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-11-03 04:39:52,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645667259] [2021-11-03 04:39:52,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:52,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:39:52,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:52,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:52,489 INFO L87 Difference]: Start difference. First operand 1636 states and 1886 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:52,813 INFO L93 Difference]: Finished difference Result 3198 states and 3685 transitions. [2021-11-03 04:39:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:52,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-11-03 04:39:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:52,815 INFO L225 Difference]: With dead ends: 3198 [2021-11-03 04:39:52,815 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:39:52,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:39:52,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:39:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:39:52,820 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 200 [2021-11-03 04:39:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:52,820 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:39:52,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:39:52,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:39:52,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:39:52,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-03 04:39:53,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-03 04:39:53,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:39:53,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:39:53,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:39:53,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:39:53,395 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-03 04:39:53,395 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-03 04:39:53,395 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-03 04:39:53,396 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-03 04:39:53,396 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-03 04:39:53,396 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-03 04:39:53,396 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-03 04:39:53,396 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-03 04:39:53,397 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-03 04:39:53,397 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-03 04:39:53,397 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-03 04:39:53,397 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-03 04:39:53,397 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-03 04:39:53,397 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-03 04:39:53,398 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-03 04:39:53,398 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-03 04:39:53,398 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-03 04:39:53,398 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-03 04:39:53,400 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-03 04:39:53,400 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-03 04:39:53,400 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-03 04:39:53,400 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-03 04:39:53,401 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-03 04:39:53,401 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-03 04:39:53,402 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-03 04:39:53,402 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-03 04:39:53,402 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-03 04:39:53,402 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-03 04:39:53,402 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-03 04:39:53,403 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-03 04:39:53,403 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-03 04:39:53,403 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-03 04:39:53,403 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-03 04:39:53,403 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-03 04:39:53,404 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-03 04:39:53,404 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-03 04:39:53,405 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:39:53,405 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-03 04:39:53,405 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-03 04:39:53,405 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-03 04:39:53,406 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (<= ~a20~0 0)) (.cse4 (<= ~a16~0 5)) (.cse0 (<= ~a7~0 0)) (.cse3 (= ~a17~0 1)) (.cse6 (= ~a20~0 1)) (.cse7 (<= ~a8~0 13)) (.cse2 (= ~a21~0 1)) (.cse5 (= ~a17~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse5) (and (<= 5 ~a16~0) .cse2 .cse6 .cse5) (and .cse7 .cse6 .cse5) (and .cse7 .cse2 .cse3 .cse6) (and .cse1 .cse7 .cse3 .cse4) (and .cse0 .cse2 .cse6 .cse5) (and .cse7 .cse3 .cse4 .cse6) (and .cse0 .cse2 .cse3 .cse6) (and .cse7 .cse2 .cse5))) [2021-11-03 04:39:53,406 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-03 04:39:53,406 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-03 04:39:53,406 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-03 04:39:53,406 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-03 04:39:53,406 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-03 04:39:53,407 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-03 04:39:53,407 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-03 04:39:53,407 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:39:53,407 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-03 04:39:53,407 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-03 04:39:53,408 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-03 04:39:53,408 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-03 04:39:53,408 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-03 04:39:53,408 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-03 04:39:53,408 INFO L857 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-11-03 04:39:53,408 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-03 04:39:53,409 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-03 04:39:53,409 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-03 04:39:53,409 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-03 04:39:53,409 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-03 04:39:53,409 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-03 04:39:53,409 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-03 04:39:53,410 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-03 04:39:53,410 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-03 04:39:53,410 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (<= ~a20~0 0)) (.cse4 (<= ~a16~0 5)) (.cse0 (<= ~a7~0 0)) (.cse3 (= ~a17~0 1)) (.cse6 (= ~a20~0 1)) (.cse7 (<= ~a8~0 13)) (.cse2 (= ~a21~0 1)) (.cse5 (= ~a17~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse5) (and (<= 5 ~a16~0) .cse2 .cse6 .cse5) (and .cse7 .cse6 .cse5) (and .cse7 .cse2 .cse3 .cse6) (and .cse1 .cse7 .cse3 .cse4) (and .cse0 .cse2 .cse6 .cse5) (and .cse7 .cse3 .cse4 .cse6) (and .cse0 .cse2 .cse3 .cse6) (and .cse7 .cse2 .cse5))) [2021-11-03 04:39:53,410 INFO L857 garLoopResultBuilder]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2021-11-03 04:39:53,410 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-03 04:39:53,411 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 462) no Hoare annotation was computed. [2021-11-03 04:39:53,411 INFO L857 garLoopResultBuilder]: For program point L462(line 462) no Hoare annotation was computed. [2021-11-03 04:39:53,411 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-03 04:39:53,411 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-03 04:39:53,411 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-03 04:39:53,412 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-03 04:39:53,412 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-03 04:39:53,412 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-03 04:39:53,415 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:53,417 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:39:53,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:39:53 BoogieIcfgContainer [2021-11-03 04:39:53,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:39:53,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:39:53,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:39:53,462 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:39:53,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:41" (3/4) ... [2021-11-03 04:39:53,465 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:39:53,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-11-03 04:39:53,504 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-03 04:39:53,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-03 04:39:53,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 04:39:53,685 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:39:53,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:39:53,687 INFO L168 Benchmark]: Toolchain (without parser) took 14619.79 ms. Allocated memory was 96.5 MB in the beginning and 232.8 MB in the end (delta: 136.3 MB). Free memory was 59.9 MB in the beginning and 171.3 MB in the end (delta: -111.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:53,688 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 67.2 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:39:53,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.09 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.8 MB in the beginning and 76.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:53,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.59 ms. Allocated memory is still 117.4 MB. Free memory was 76.5 MB in the beginning and 70.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:53,689 INFO L168 Benchmark]: Boogie Preprocessor took 88.09 ms. Allocated memory is still 117.4 MB. Free memory was 70.7 MB in the beginning and 66.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:53,690 INFO L168 Benchmark]: RCFGBuilder took 1924.43 ms. Allocated memory is still 117.4 MB. Free memory was 66.5 MB in the beginning and 53.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:53,690 INFO L168 Benchmark]: TraceAbstraction took 11588.04 ms. Allocated memory was 117.4 MB in the beginning and 232.8 MB in the end (delta: 115.3 MB). Free memory was 53.0 MB in the beginning and 187.0 MB in the end (delta: -134.0 MB). Peak memory consumption was 81.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:53,691 INFO L168 Benchmark]: Witness Printer took 224.46 ms. Allocated memory is still 232.8 MB. Free memory was 187.0 MB in the beginning and 171.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:53,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 67.2 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.09 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.8 MB in the beginning and 76.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 113.59 ms. Allocated memory is still 117.4 MB. Free memory was 76.5 MB in the beginning and 70.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.09 ms. Allocated memory is still 117.4 MB. Free memory was 70.7 MB in the beginning and 66.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1924.43 ms. Allocated memory is still 117.4 MB. Free memory was 66.5 MB in the beginning and 53.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11588.04 ms. Allocated memory was 117.4 MB in the beginning and 232.8 MB in the end (delta: 115.3 MB). Free memory was 53.0 MB in the beginning and 187.0 MB in the end (delta: -134.0 MB). Peak memory consumption was 81.6 MB. Max. memory is 16.1 GB. * Witness Printer took 224.46 ms. Allocated memory is still 232.8 MB. Free memory was 187.0 MB in the beginning and 171.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 462]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.4s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 605 SDtfs, 695 SDslu, 49 SDs, 0 SdLazy, 2669 SolverSat, 667 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1132 GetRequests, 1110 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1636occurred in iteration=10, InterpolantAutomatonStates: 35, 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, 11 MinimizatonAttempts, 568 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 271 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1912 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1944 NumberOfCodeBlocks, 1944 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2480 ConstructedInterpolants, 0 QuantifiedInterpolants, 4931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1296 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 2302/2335 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((((a7 <= 0 && a20 <= 0) && a21 == 1) && a17 == 1) || (((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5)) || ((a20 <= 0 && a21 == 1) && a17 == 0)) || (((5 <= a16 && a21 == 1) && a20 == 1) && a17 == 0)) || ((a8 <= 13 && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 5)) || (((a7 <= 0 && a21 == 1) && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a17 == 1) && a16 <= 5) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1)) || ((a8 <= 13 && a21 == 1) && a17 == 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a7 <= 0 && a20 <= 0) && a21 == 1) && a17 == 1) || (((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5)) || ((a20 <= 0 && a21 == 1) && a17 == 0)) || (((5 <= a16 && a21 == 1) && a20 == 1) && a17 == 0)) || ((a8 <= 13 && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 5)) || (((a7 <= 0 && a21 == 1) && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a17 == 1) && a16 <= 5) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1)) || ((a8 <= 13 && a21 == 1) && a17 == 0) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:39:53,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8267c407-e452-4aa2-b9b4-c57c67716947/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE