./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF --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 16921798414ec528dd37161230657dad4883a0777e5a6c6f07453756efda755c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:32:27,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:32:27,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:32:27,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:32:27,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:32:27,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:32:27,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:32:27,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:32:27,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:32:27,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:32:27,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:32:27,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:32:27,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:32:27,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:32:27,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:32:27,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:32:27,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:32:27,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:32:27,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:32:27,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:32:27,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:32:27,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:32:27,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:32:27,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:32:27,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:32:27,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:32:27,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:32:27,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:32:27,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:32:27,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:32:27,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:32:27,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:32:27,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:32:27,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:32:27,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:32:27,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:32:27,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:32:27,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:32:27,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:32:27,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:32:27,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:32:27,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:32:27,771 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:32:27,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:32:27,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:32:27,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:32:27,773 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:32:27,773 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:32:27,773 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:32:27,773 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:32:27,773 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:32:27,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:32:27,774 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:32:27,774 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:32:27,774 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:32:27,774 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:32:27,775 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:32:27,775 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:32:27,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:32:27,776 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:32:27,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:32:27,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:32:27,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:32:27,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:32:27,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:32:27,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:32:27,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:32:27,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:32:27,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:32:27,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:32:27,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:32:27,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:32:27,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:32:27,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:32:27,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:32:27,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:32:27,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:32:27,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:32:27,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:32:27,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:32:27,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:32:27,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:32:27,781 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_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16921798414ec528dd37161230657dad4883a0777e5a6c6f07453756efda755c [2021-11-12 22:32:28,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:32:28,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:32:28,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:32:28,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:32:28,115 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:32:28,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c [2021-11-12 22:32:28,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/data/1e936fe2f/74f23e4e8caf4a0997ea6d2d63cf1565/FLAG1b99bb018 [2021-11-12 22:32:28,757 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:32:28,757 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/sv-benchmarks/c/eca-rers2012/Problem02_label36.c [2021-11-12 22:32:28,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/data/1e936fe2f/74f23e4e8caf4a0997ea6d2d63cf1565/FLAG1b99bb018 [2021-11-12 22:32:28,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/data/1e936fe2f/74f23e4e8caf4a0997ea6d2d63cf1565 [2021-11-12 22:32:29,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:32:29,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:32:29,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:32:29,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:32:29,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:32:29,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1829e55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29, skipping insertion in model container [2021-11-12 22:32:29,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:32:29,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:32:29,441 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/sv-benchmarks/c/eca-rers2012/Problem02_label36.c[20425,20438] [2021-11-12 22:32:29,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:32:29,488 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:32:29,569 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_8c9da588-a0c2-4510-ae96-a13cabaf6650/sv-benchmarks/c/eca-rers2012/Problem02_label36.c[20425,20438] [2021-11-12 22:32:29,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:32:29,601 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:32:29,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29 WrapperNode [2021-11-12 22:32:29,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:32:29,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:32:29,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:32:29,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:32:29,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:32:29,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:32:29,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:32:29,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:32:29,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:32:29,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:32:29,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:32:29,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:32:29,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (1/1) ... [2021-11-12 22:32:29,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:32:29,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:32:29,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:32:29,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:32:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:32:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:32:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:32:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:32:31,196 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:32:31,197 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:32:31,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:32:31 BoogieIcfgContainer [2021-11-12 22:32:31,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:32:31,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:32:31,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:32:31,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:32:31,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:32:29" (1/3) ... [2021-11-12 22:32:31,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f99ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:32:31, skipping insertion in model container [2021-11-12 22:32:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:29" (2/3) ... [2021-11-12 22:32:31,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f99ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:32:31, skipping insertion in model container [2021-11-12 22:32:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:32:31" (3/3) ... [2021-11-12 22:32:31,209 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2021-11-12 22:32:31,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:32:31,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:32:31,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:32:31,289 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 [2021-11-12 22:32:31,289 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:32:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2021-11-12 22:32:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 22:32:31,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:31,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:31,330 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1243333366, now seen corresponding path program 1 times [2021-11-12 22:32:31,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:31,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841920050] [2021-11-12 22:32:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:31,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:31,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:31,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841920050] [2021-11-12 22:32:31,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841920050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:31,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:31,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:32:31,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846314706] [2021-11-12 22:32:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:31,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:31,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:31,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:31,840 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-12 22:32:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:32,396 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-12 22:32:32,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:32,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-11-12 22:32:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:32,418 INFO L225 Difference]: With dead ends: 251 [2021-11-12 22:32:32,419 INFO L226 Difference]: Without dead ends: 163 [2021-11-12 22:32:32,422 INFO L932 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 [2021-11-12 22:32:32,427 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 351.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.65ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 455.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:32,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 32 Invalid, 317 Unknown, 0 Unchecked, 8.65ms Time], IncrementalHoareTripleChecker [86 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 455.09ms Time] [2021-11-12 22:32:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-12 22:32:32,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-12 22:32:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.7777777777777777) internal successors, (288), 162 states have internal predecessors, (288), 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) [2021-11-12 22:32:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2021-11-12 22:32:32,481 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2021-11-12 22:32:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:32,482 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2021-11-12 22:32:32,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-12 22:32:32,483 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2021-11-12 22:32:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 22:32:32,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:32,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:32,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:32:32,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:32,490 INFO L85 PathProgramCache]: Analyzing trace with hash 726159637, now seen corresponding path program 1 times [2021-11-12 22:32:32,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:32,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417563692] [2021-11-12 22:32:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:32,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:32,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:32,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417563692] [2021-11-12 22:32:32,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417563692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:32,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:32,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:32:32,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253494011] [2021-11-12 22:32:32,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:32,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:32,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:32,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:32,577 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-11-12 22:32:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:32,924 INFO L93 Difference]: Finished difference Result 487 states and 862 transitions. [2021-11-12 22:32:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:32,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2021-11-12 22:32:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:32,931 INFO L225 Difference]: With dead ends: 487 [2021-11-12 22:32:32,931 INFO L226 Difference]: Without dead ends: 325 [2021-11-12 22:32:32,937 INFO L932 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 [2021-11-12 22:32:32,939 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.35ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:32,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 52 Invalid, 294 Unknown, 0 Unchecked, 4.35ms Time], IncrementalHoareTripleChecker [50 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 313.62ms Time] [2021-11-12 22:32:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-12 22:32:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-11-12 22:32:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.704968944099379) internal successors, (549), 322 states have internal predecessors, (549), 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) [2021-11-12 22:32:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 549 transitions. [2021-11-12 22:32:32,991 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 549 transitions. Word has length 98 [2021-11-12 22:32:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:32,995 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 549 transitions. [2021-11-12 22:32:32,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-11-12 22:32:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 549 transitions. [2021-11-12 22:32:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-12 22:32:33,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:33,006 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:33,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:32:33,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:33,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1167851045, now seen corresponding path program 1 times [2021-11-12 22:32:33,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:33,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591159116] [2021-11-12 22:32:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:33,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:33,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:33,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591159116] [2021-11-12 22:32:33,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591159116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:33,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:33,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:32:33,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98623860] [2021-11-12 22:32:33,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:33,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:33,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:33,072 INFO L87 Difference]: Start difference. First operand 323 states and 549 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2021-11-12 22:32:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:33,268 INFO L93 Difference]: Finished difference Result 645 states and 1097 transitions. [2021-11-12 22:32:33,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:33,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 99 [2021-11-12 22:32:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:33,272 INFO L225 Difference]: With dead ends: 645 [2021-11-12 22:32:33,272 INFO L226 Difference]: Without dead ends: 323 [2021-11-12 22:32:33,276 INFO L932 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 [2021-11-12 22:32:33,284 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:33,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 4 Invalid, 161 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 182.27ms Time] [2021-11-12 22:32:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-12 22:32:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-11-12 22:32:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5186335403726707) internal successors, (489), 322 states have internal predecessors, (489), 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) [2021-11-12 22:32:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 489 transitions. [2021-11-12 22:32:33,323 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 489 transitions. Word has length 99 [2021-11-12 22:32:33,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:33,323 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 489 transitions. [2021-11-12 22:32:33,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2021-11-12 22:32:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 489 transitions. [2021-11-12 22:32:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 22:32:33,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:33,329 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:33,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:32:33,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:33,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash 65854922, now seen corresponding path program 1 times [2021-11-12 22:32:33,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:33,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538602435] [2021-11-12 22:32:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:33,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 22:32:33,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:33,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538602435] [2021-11-12 22:32:33,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538602435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:33,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:33,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:32:33,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826729219] [2021-11-12 22:32:33,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:33,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:33,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:33,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:33,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:33,417 INFO L87 Difference]: Start difference. First operand 323 states and 489 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2021-11-12 22:32:33,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:33,731 INFO L93 Difference]: Finished difference Result 805 states and 1197 transitions. [2021-11-12 22:32:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:33,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 102 [2021-11-12 22:32:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:33,735 INFO L225 Difference]: With dead ends: 805 [2021-11-12 22:32:33,735 INFO L226 Difference]: Without dead ends: 483 [2021-11-12 22:32:33,736 INFO L932 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 [2021-11-12 22:32:33,737 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 235.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.96ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:33,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 59 Invalid, 256 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [33 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 291.96ms Time] [2021-11-12 22:32:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-12 22:32:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-11-12 22:32:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3672199170124482) internal successors, (659), 482 states have internal predecessors, (659), 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) [2021-11-12 22:32:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 659 transitions. [2021-11-12 22:32:33,771 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 659 transitions. Word has length 102 [2021-11-12 22:32:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:33,771 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 659 transitions. [2021-11-12 22:32:33,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2021-11-12 22:32:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 659 transitions. [2021-11-12 22:32:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 22:32:33,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:33,787 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:33,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:32:33,787 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1772722127, now seen corresponding path program 1 times [2021-11-12 22:32:33,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:33,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414337589] [2021-11-12 22:32:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:33,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 22:32:33,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:33,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414337589] [2021-11-12 22:32:33,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414337589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:33,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:33,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:32:33,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957848747] [2021-11-12 22:32:33,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:33,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:33,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:33,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:33,904 INFO L87 Difference]: Start difference. First operand 483 states and 659 transitions. Second operand has 3 states, 3 states have (on average 30.0) 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) [2021-11-12 22:32:34,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:34,229 INFO L93 Difference]: Finished difference Result 1125 states and 1578 transitions. [2021-11-12 22:32:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:34,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) 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 107 [2021-11-12 22:32:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:34,235 INFO L225 Difference]: With dead ends: 1125 [2021-11-12 22:32:34,235 INFO L226 Difference]: Without dead ends: 723 [2021-11-12 22:32:34,236 INFO L932 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 [2021-11-12 22:32:34,237 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 293.96ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:34,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 126 Invalid, 281 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [57 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 293.96ms Time] [2021-11-12 22:32:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-12 22:32:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-11-12 22:32:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.2950138504155124) internal successors, (935), 722 states have internal predecessors, (935), 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) [2021-11-12 22:32:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 935 transitions. [2021-11-12 22:32:34,281 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 935 transitions. Word has length 107 [2021-11-12 22:32:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:34,286 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 935 transitions. [2021-11-12 22:32:34,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) 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) [2021-11-12 22:32:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 935 transitions. [2021-11-12 22:32:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 22:32:34,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:34,290 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:34,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:32:34,290 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash 91171940, now seen corresponding path program 1 times [2021-11-12 22:32:34,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:34,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019080232] [2021-11-12 22:32:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:34,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:34,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:34,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019080232] [2021-11-12 22:32:34,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019080232] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:32:34,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510420655] [2021-11-12 22:32:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:34,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:32:34,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:32:34,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:32:34,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:32:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:34,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:32:34,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 22:32:34,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 22:32:35,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510420655] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:35,174 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:32:35,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-12 22:32:35,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131045082] [2021-11-12 22:32:35,174 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:35,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:35,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:35,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:32:35,176 INFO L87 Difference]: Start difference. First operand 723 states and 935 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-12 22:32:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:35,487 INFO L93 Difference]: Finished difference Result 1765 states and 2361 transitions. [2021-11-12 22:32:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:35,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 107 [2021-11-12 22:32:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:35,493 INFO L225 Difference]: With dead ends: 1765 [2021-11-12 22:32:35,493 INFO L226 Difference]: Without dead ends: 563 [2021-11-12 22:32:35,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:32:35,502 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 237.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 284.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:35,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 141 Invalid, 284 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [76 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 284.36ms Time] [2021-11-12 22:32:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-12 22:32:35,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-11-12 22:32:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.2800829875518671) internal successors, (617), 482 states have internal predecessors, (617), 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) [2021-11-12 22:32:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 617 transitions. [2021-11-12 22:32:35,517 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 617 transitions. Word has length 107 [2021-11-12 22:32:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:35,517 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 617 transitions. [2021-11-12 22:32:35,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-12 22:32:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 617 transitions. [2021-11-12 22:32:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-12 22:32:35,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:35,522 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-12 22:32:35,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:35,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-12 22:32:35,747 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:35,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:35,747 INFO L85 PathProgramCache]: Analyzing trace with hash -966260153, now seen corresponding path program 1 times [2021-11-12 22:32:35,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:35,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076172906] [2021-11-12 22:32:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:35,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:35,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:35,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076172906] [2021-11-12 22:32:35,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076172906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:35,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:35,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:32:35,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002077741] [2021-11-12 22:32:35,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:35,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:35,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:35,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:35,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:35,821 INFO L87 Difference]: Start difference. First operand 483 states and 617 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) [2021-11-12 22:32:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:36,072 INFO L93 Difference]: Finished difference Result 1045 states and 1343 transitions. [2021-11-12 22:32:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:36,073 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 121 [2021-11-12 22:32:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:36,077 INFO L225 Difference]: With dead ends: 1045 [2021-11-12 22:32:36,077 INFO L226 Difference]: Without dead ends: 643 [2021-11-12 22:32:36,078 INFO L932 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 [2021-11-12 22:32:36,078 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 232.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:36,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 122 Invalid, 234 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [27 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 232.48ms Time] [2021-11-12 22:32:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-12 22:32:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-11-12 22:32:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.2211838006230529) internal successors, (784), 642 states have internal predecessors, (784), 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) [2021-11-12 22:32:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2021-11-12 22:32:36,097 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 121 [2021-11-12 22:32:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2021-11-12 22:32:36,098 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) [2021-11-12 22:32:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2021-11-12 22:32:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-12 22:32:36,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:36,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:36,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 22:32:36,101 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash -796226699, now seen corresponding path program 1 times [2021-11-12 22:32:36,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:36,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714721760] [2021-11-12 22:32:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:36,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:36,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:36,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714721760] [2021-11-12 22:32:36,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714721760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:36,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:36,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:32:36,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047511755] [2021-11-12 22:32:36,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:36,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:36,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:36,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:36,194 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:36,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:36,484 INFO L93 Difference]: Finished difference Result 1445 states and 1825 transitions. [2021-11-12 22:32:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:36,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-12 22:32:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:36,490 INFO L225 Difference]: With dead ends: 1445 [2021-11-12 22:32:36,491 INFO L226 Difference]: Without dead ends: 883 [2021-11-12 22:32:36,492 INFO L932 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 [2021-11-12 22:32:36,493 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 65 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 262.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:36,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 95 Invalid, 256 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [54 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 262.93ms Time] [2021-11-12 22:32:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-12 22:32:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-11-12 22:32:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2392290249433107) internal successors, (1093), 882 states have internal predecessors, (1093), 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) [2021-11-12 22:32:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1093 transitions. [2021-11-12 22:32:36,523 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1093 transitions. Word has length 142 [2021-11-12 22:32:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:36,525 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1093 transitions. [2021-11-12 22:32:36,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:36,525 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1093 transitions. [2021-11-12 22:32:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-12 22:32:36,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:36,528 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:36,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 22:32:36,529 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:36,529 INFO L85 PathProgramCache]: Analyzing trace with hash 520261884, now seen corresponding path program 1 times [2021-11-12 22:32:36,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:36,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974186482] [2021-11-12 22:32:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:36,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-12 22:32:36,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:36,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974186482] [2021-11-12 22:32:36,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974186482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:36,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:36,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:32:36,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123774079] [2021-11-12 22:32:36,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:36,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:36,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:36,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:36,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:36,659 INFO L87 Difference]: Start difference. First operand 883 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-12 22:32:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:36,916 INFO L93 Difference]: Finished difference Result 1685 states and 2100 transitions. [2021-11-12 22:32:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:36,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 165 [2021-11-12 22:32:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:36,923 INFO L225 Difference]: With dead ends: 1685 [2021-11-12 22:32:36,923 INFO L226 Difference]: Without dead ends: 883 [2021-11-12 22:32:36,924 INFO L932 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 [2021-11-12 22:32:36,926 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 230.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:36,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 132 Invalid, 218 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 230.79ms Time] [2021-11-12 22:32:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-12 22:32:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-11-12 22:32:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.1848072562358276) internal successors, (1045), 882 states have internal predecessors, (1045), 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) [2021-11-12 22:32:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1045 transitions. [2021-11-12 22:32:36,956 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1045 transitions. Word has length 165 [2021-11-12 22:32:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:36,956 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1045 transitions. [2021-11-12 22:32:36,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-12 22:32:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1045 transitions. [2021-11-12 22:32:36,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-12 22:32:36,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:36,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:36,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 22:32:36,961 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash -703282381, now seen corresponding path program 1 times [2021-11-12 22:32:36,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:36,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119035616] [2021-11-12 22:32:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:36,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-12 22:32:37,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:37,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119035616] [2021-11-12 22:32:37,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119035616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:32:37,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297848577] [2021-11-12 22:32:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:37,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:32:37,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:32:37,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:32:37,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:32:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:37,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:32:37,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-12 22:32:37,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-12 22:32:38,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297848577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:38,366 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:32:38,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-11-12 22:32:38,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473358965] [2021-11-12 22:32:38,367 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:38,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:38,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:38,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:32:38,368 INFO L87 Difference]: Start difference. First operand 883 states and 1045 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) [2021-11-12 22:32:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:38,504 INFO L93 Difference]: Finished difference Result 883 states and 1045 transitions. [2021-11-12 22:32:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:38,504 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 200 [2021-11-12 22:32:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:38,505 INFO L225 Difference]: With dead ends: 883 [2021-11-12 22:32:38,505 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:32:38,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:32:38,507 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.92ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:38,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 3 Invalid, 121 Unknown, 0 Unchecked, 0.60ms Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 124.92ms Time] [2021-11-12 22:32:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:32:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:32:38,509 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) [2021-11-12 22:32:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:32:38,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 200 [2021-11-12 22:32:38,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:38,510 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:32:38,510 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) [2021-11-12 22:32:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:32:38,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:32:38,513 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:32:38,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:38,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-12 22:32:38,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:32:38,961 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-12 22:32:38,962 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-12 22:32:38,963 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-12 22:32:38,964 INFO L858 garLoopResultBuilder]: For program point L574-1(lines 39 608) no Hoare annotation was computed. [2021-11-12 22:32:38,964 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-12 22:32:38,964 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-12 22:32:38,964 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-12 22:32:38,964 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-12 22:32:38,964 INFO L858 garLoopResultBuilder]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L578(line 578) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-12 22:32:38,965 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-12 22:32:38,966 INFO L858 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 578) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-12 22:32:38,967 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-12 22:32:38,968 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-12 22:32:38,968 INFO L858 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-12 22:32:38,968 INFO L858 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-12 22:32:38,968 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-12 22:32:38,968 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-12 22:32:38,968 INFO L858 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-12 22:32:38,968 INFO L858 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-12 22:32:38,969 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-12 22:32:38,969 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-12 22:32:38,969 INFO L854 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8))) (or (and (= ~a25~0 1) .cse0 .cse1) (and (<= 10 ~a28~0) .cse0 .cse1 (= ~a19~0 1)) (and .cse0 .cse1 (= ~a25~0 0)) (and (= ~a11~0 1) .cse1))) [2021-11-12 22:32:38,969 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-12 22:32:38,969 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-12 22:32:38,969 INFO L861 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-12 22:32:38,970 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-12 22:32:38,970 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-12 22:32:38,970 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-12 22:32:38,970 INFO L858 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-12 22:32:38,970 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-12 22:32:38,970 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:32:38,971 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-12 22:32:38,971 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-12 22:32:38,971 INFO L854 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8))) (or (and (= ~a25~0 1) .cse0 .cse1) (and (<= 10 ~a28~0) .cse0 .cse1 (= ~a19~0 1)) (and .cse0 .cse1 (= ~a25~0 0)) (and (= ~a11~0 1) .cse1))) [2021-11-12 22:32:38,971 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-12 22:32:38,971 INFO L858 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-12 22:32:38,971 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-12 22:32:38,971 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-12 22:32:38,971 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-12 22:32:38,972 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-12 22:32:38,973 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-12 22:32:38,976 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:38,978 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:32:39,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:32:39 BoogieIcfgContainer [2021-11-12 22:32:39,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:32:39,005 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:32:39,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:32:39,005 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:32:39,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:32:31" (3/4) ... [2021-11-12 22:32:39,008 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:32:39,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2021-11-12 22:32:39,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-12 22:32:39,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-12 22:32:39,042 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:32:39,185 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:32:39,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:32:39,186 INFO L158 Benchmark]: Toolchain (without parser) took 10182.37ms. Allocated memory was 94.4MB in the beginning and 180.4MB in the end (delta: 86.0MB). Free memory was 56.8MB in the beginning and 77.3MB in the end (delta: -20.5MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2021-11-12 22:32:39,186 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 66.1MB in the beginning and 66.1MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:32:39,187 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.25ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 72.4MB in the end (delta: -15.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:32:39,187 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.79ms. Allocated memory is still 113.2MB. Free memory was 72.4MB in the beginning and 67.1MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 22:32:39,187 INFO L158 Benchmark]: Boogie Preprocessor took 75.58ms. Allocated memory is still 113.2MB. Free memory was 67.1MB in the beginning and 62.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:32:39,188 INFO L158 Benchmark]: RCFGBuilder took 1398.68ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 65.3MB in the end (delta: -3.1MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2021-11-12 22:32:39,189 INFO L158 Benchmark]: TraceAbstraction took 7801.63ms. Allocated memory was 113.2MB in the beginning and 180.4MB in the end (delta: 67.1MB). Free memory was 64.8MB in the beginning and 91.9MB in the end (delta: -27.2MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2021-11-12 22:32:39,189 INFO L158 Benchmark]: Witness Printer took 180.28ms. Allocated memory is still 180.4MB. Free memory was 91.9MB in the beginning and 77.3MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 22:32:39,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 66.1MB in the beginning and 66.1MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.25ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 72.4MB in the end (delta: -15.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.79ms. Allocated memory is still 113.2MB. Free memory was 72.4MB in the beginning and 67.1MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.58ms. Allocated memory is still 113.2MB. Free memory was 67.1MB in the beginning and 62.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1398.68ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 65.3MB in the end (delta: -3.1MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7801.63ms. Allocated memory was 113.2MB in the beginning and 180.4MB in the end (delta: 67.1MB). Free memory was 64.8MB in the beginning and 91.9MB in the end (delta: -27.2MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Witness Printer took 180.28ms. Allocated memory is still 180.4MB. Free memory was 91.9MB in the beginning and 77.3MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * 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: 578]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 569 SdHoareTripleChecker+Valid, 2672.37ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 569 mSDsluCounter, 766 SdHoareTripleChecker+Invalid, 2143.57ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 434 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1988 IncrementalHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 434 mSolverCounterUnsat, 715 mSDtfsCounter, 1988 mSolverCounterSat, 28.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 622 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=8, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 82 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 83 HoareAnnotationTreeSize, 3 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 482 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1528 NumberOfCodeBlocks, 1528 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1821 ConstructedInterpolants, 0 QuantifiedInterpolants, 7517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 684 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 811/946 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: 616]: Loop Invariant Derived loop invariant: ((((a25 == 1 && 8 <= a17) && a17 <= 8) || (((10 <= a28 && 8 <= a17) && a17 <= 8) && a19 == 1)) || ((8 <= a17 && a17 <= 8) && a25 == 0)) || (a11 == 1 && a17 <= 8) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a25 == 1 && 8 <= a17) && a17 <= 8) || (((10 <= a28 && 8 <= a17) && a17 <= 8) && a19 == 1)) || ((8 <= a17 && a17 <= 8) && a25 == 0)) || (a11 == 1 && a17 <= 8) RESULT: Ultimate proved your program to be correct! [2021-11-12 22:32:39,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9da588-a0c2-4510-ae96-a13cabaf6650/bin/utaipan-vmNK8stdcF/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