./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92a01e6695cf7123f47033a13419f7d997344346 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:40,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:40,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:41,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:41,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:41,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:41,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:41,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:41,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:41,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:41,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:41,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:41,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:41,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:41,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:41,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:41,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:41,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:41,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:41,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:41,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:41,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:41,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:41,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:41,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:41,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:41,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:41,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:41,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:41,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:41,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:41,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:41,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:41,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:41,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:41,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:41,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:41,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:41,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:41,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:41,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:41,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:41,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:41,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:41,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:41,149 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:41,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:41,149 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:41,150 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:41,150 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:41,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:41,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:41,151 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:41,152 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:41,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:41,152 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:41,152 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:41,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:41,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:41,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:41,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:41,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:41,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:41,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:41,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:41,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:41,156 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:41,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:41,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:41,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:41,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:41,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:41,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:41,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:41,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:41,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:41,158 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:41,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:41,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:41,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:41,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:41,159 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_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92a01e6695cf7123f47033a13419f7d997344346 [2021-10-11 02:22:41,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:41,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:41,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:41,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:41,506 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:41,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label46.c [2021-10-11 02:22:41,568 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/data/bbfe5214d/825992bd359349aa9782ab20b747eb87/FLAGa87a4951e [2021-10-11 02:22:42,111 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:42,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/sv-benchmarks/c/eca-rers2012/Problem02_label46.c [2021-10-11 02:22:42,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/data/bbfe5214d/825992bd359349aa9782ab20b747eb87/FLAGa87a4951e [2021-10-11 02:22:42,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/data/bbfe5214d/825992bd359349aa9782ab20b747eb87 [2021-10-11 02:22:42,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:42,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:42,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:42,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:42,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:42,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:42" (1/1) ... [2021-10-11 02:22:42,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e4e2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:42, skipping insertion in model container [2021-10-11 02:22:42,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:42" (1/1) ... [2021-10-11 02:22:42,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:42,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:42,908 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/sv-benchmarks/c/eca-rers2012/Problem02_label46.c[18150,18163] [2021-10-11 02:22:42,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:42,962 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:43,061 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/sv-benchmarks/c/eca-rers2012/Problem02_label46.c[18150,18163] [2021-10-11 02:22:43,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:43,088 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:43,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43 WrapperNode [2021-10-11 02:22:43,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:43,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:43,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:43,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:43,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:43,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:43,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:43,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:43,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... [2021-10-11 02:22:43,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:43,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:43,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:43,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:43,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:45,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:45,309 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:22:45,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:45 BoogieIcfgContainer [2021-10-11 02:22:45,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:45,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:45,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:45,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:45,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:42" (1/3) ... [2021-10-11 02:22:45,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86eda9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:45, skipping insertion in model container [2021-10-11 02:22:45,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:43" (2/3) ... [2021-10-11 02:22:45,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86eda9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:45, skipping insertion in model container [2021-10-11 02:22:45,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:45" (3/3) ... [2021-10-11 02:22:45,324 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2021-10-11 02:22:45,341 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:45,344 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:45,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:45,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:45,391 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:45,391 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:45,391 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:45,391 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:45,392 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:45,392 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:45,392 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:45,409 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:22:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:22:45,416 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:45,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:45,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:45,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:45,423 INFO L82 PathProgramCache]: Analyzing trace with hash 925956367, now seen corresponding path program 1 times [2021-10-11 02:22:45,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:45,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364696376] [2021-10-11 02:22:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:45,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364696376] [2021-10-11 02:22:45,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:45,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:45,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637935981] [2021-10-11 02:22:45,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:45,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:45,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:45,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:45,843 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:22:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:46,278 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:22:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:46,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:22:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:46,291 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:22:46,291 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:22:46,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:46,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:22:46,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:22:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:22:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-11 02:22:46,342 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-11 02:22:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:46,343 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-11 02:22:46,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-11 02:22:46,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:22:46,348 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:46,348 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:46,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:46,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:46,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1028677124, now seen corresponding path program 1 times [2021-10-11 02:22:46,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:46,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848810798] [2021-10-11 02:22:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:46,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848810798] [2021-10-11 02:22:46,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:46,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:46,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940339531] [2021-10-11 02:22:46,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:46,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:46,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:46,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:46,431 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2021-10-11 02:22:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:46,831 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-11 02:22:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:46,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:22:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:46,834 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:22:46,835 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:22:46,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:22:46,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:22:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:22:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2021-10-11 02:22:46,858 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 84 [2021-10-11 02:22:46,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:46,858 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2021-10-11 02:22:46,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2021-10-11 02:22:46,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-11 02:22:46,862 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:46,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:46,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:46,863 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:46,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:46,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2137927005, now seen corresponding path program 1 times [2021-10-11 02:22:46,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:46,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40162209] [2021-10-11 02:22:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:46,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40162209] [2021-10-11 02:22:46,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832341121] [2021-10-11 02:22:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:47,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:47,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:22:47,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:22:47,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:47,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:22:47,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176683956] [2021-10-11 02:22:47,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:47,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:47,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:47,306 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand 3 states. [2021-10-11 02:22:47,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:47,804 INFO L93 Difference]: Finished difference Result 805 states and 1261 transitions. [2021-10-11 02:22:47,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:47,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2021-10-11 02:22:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:47,811 INFO L225 Difference]: With dead ends: 805 [2021-10-11 02:22:47,811 INFO L226 Difference]: Without dead ends: 483 [2021-10-11 02:22:47,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-11 02:22:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-11 02:22:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:22:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 728 transitions. [2021-10-11 02:22:47,858 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 728 transitions. Word has length 89 [2021-10-11 02:22:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:47,861 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 728 transitions. [2021-10-11 02:22:47,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 728 transitions. [2021-10-11 02:22:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-11 02:22:47,871 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:47,872 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:48,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:22:48,086 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:48,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:48,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1673767258, now seen corresponding path program 2 times [2021-10-11 02:22:48,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:48,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253321704] [2021-10-11 02:22:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:22:48,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253321704] [2021-10-11 02:22:48,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:48,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:48,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028298916] [2021-10-11 02:22:48,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:48,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:48,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:48,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:48,178 INFO L87 Difference]: Start difference. First operand 483 states and 728 transitions. Second operand 3 states. [2021-10-11 02:22:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:48,584 INFO L93 Difference]: Finished difference Result 1125 states and 1741 transitions. [2021-10-11 02:22:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:48,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2021-10-11 02:22:48,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:48,591 INFO L225 Difference]: With dead ends: 1125 [2021-10-11 02:22:48,591 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:22:48,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:22:48,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:22:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:22:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 909 transitions. [2021-10-11 02:22:48,618 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 909 transitions. Word has length 94 [2021-10-11 02:22:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:48,619 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 909 transitions. [2021-10-11 02:22:48,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 909 transitions. [2021-10-11 02:22:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:22:48,621 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:48,621 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:48,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:22:48,622 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:48,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2134426297, now seen corresponding path program 1 times [2021-10-11 02:22:48,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:48,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237231241] [2021-10-11 02:22:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:48,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237231241] [2021-10-11 02:22:48,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:48,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:48,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878071521] [2021-10-11 02:22:48,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:48,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:48,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:48,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:48,684 INFO L87 Difference]: Start difference. First operand 643 states and 909 transitions. Second operand 3 states. [2021-10-11 02:22:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:49,164 INFO L93 Difference]: Finished difference Result 1525 states and 2209 transitions. [2021-10-11 02:22:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:49,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:22:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:49,175 INFO L225 Difference]: With dead ends: 1525 [2021-10-11 02:22:49,175 INFO L226 Difference]: Without dead ends: 883 [2021-10-11 02:22:49,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-11 02:22:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 803. [2021-10-11 02:22:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-10-11 02:22:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1185 transitions. [2021-10-11 02:22:49,219 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1185 transitions. Word has length 103 [2021-10-11 02:22:49,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:49,220 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1185 transitions. [2021-10-11 02:22:49,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1185 transitions. [2021-10-11 02:22:49,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-11 02:22:49,223 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:49,223 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-10-11 02:22:49,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:22:49,224 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:49,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:49,224 INFO L82 PathProgramCache]: Analyzing trace with hash -911078004, now seen corresponding path program 1 times [2021-10-11 02:22:49,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:49,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187414585] [2021-10-11 02:22:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:22:49,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187414585] [2021-10-11 02:22:49,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:49,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:49,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282051187] [2021-10-11 02:22:49,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:49,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:49,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:49,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:49,323 INFO L87 Difference]: Start difference. First operand 803 states and 1185 transitions. Second operand 3 states. [2021-10-11 02:22:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:49,768 INFO L93 Difference]: Finished difference Result 2165 states and 3221 transitions. [2021-10-11 02:22:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:49,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2021-10-11 02:22:49,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:49,777 INFO L225 Difference]: With dead ends: 2165 [2021-10-11 02:22:49,777 INFO L226 Difference]: Without dead ends: 1363 [2021-10-11 02:22:49,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:49,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-10-11 02:22:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1203. [2021-10-11 02:22:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2021-10-11 02:22:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1711 transitions. [2021-10-11 02:22:49,813 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1711 transitions. Word has length 105 [2021-10-11 02:22:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:49,813 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1711 transitions. [2021-10-11 02:22:49,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1711 transitions. [2021-10-11 02:22:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:22:49,816 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:49,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:49,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:22:49,817 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:49,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2118168815, now seen corresponding path program 1 times [2021-10-11 02:22:49,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:49,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815520958] [2021-10-11 02:22:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:50,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815520958] [2021-10-11 02:22:50,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911032370] [2021-10-11 02:22:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:50,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:50,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:22:50,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:22:50,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:50,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:22:50,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926731320] [2021-10-11 02:22:50,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:50,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:50,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:50,312 INFO L87 Difference]: Start difference. First operand 1203 states and 1711 transitions. Second operand 3 states. [2021-10-11 02:22:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:50,830 INFO L93 Difference]: Finished difference Result 2805 states and 3987 transitions. [2021-10-11 02:22:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:50,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:22:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:50,842 INFO L225 Difference]: With dead ends: 2805 [2021-10-11 02:22:50,842 INFO L226 Difference]: Without dead ends: 1443 [2021-10-11 02:22:50,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-11 02:22:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1363. [2021-10-11 02:22:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2021-10-11 02:22:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1794 transitions. [2021-10-11 02:22:50,892 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1794 transitions. Word has length 107 [2021-10-11 02:22:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:50,893 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1794 transitions. [2021-10-11 02:22:50,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1794 transitions. [2021-10-11 02:22:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-11 02:22:50,898 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:50,898 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:51,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:51,114 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:51,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1440845208, now seen corresponding path program 1 times [2021-10-11 02:22:51,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:51,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977104726] [2021-10-11 02:22:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-10-11 02:22:51,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977104726] [2021-10-11 02:22:51,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365743871] [2021-10-11 02:22:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:51,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:51,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-11 02:22:51,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-11 02:22:51,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:51,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:22:51,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494223875] [2021-10-11 02:22:51,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:51,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:51,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:51,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:51,490 INFO L87 Difference]: Start difference. First operand 1363 states and 1794 transitions. Second operand 3 states. [2021-10-11 02:22:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:51,714 INFO L93 Difference]: Finished difference Result 2565 states and 3344 transitions. [2021-10-11 02:22:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:51,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2021-10-11 02:22:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:51,722 INFO L225 Difference]: With dead ends: 2565 [2021-10-11 02:22:51,722 INFO L226 Difference]: Without dead ends: 1043 [2021-10-11 02:22:51,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-11 02:22:51,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2021-10-11 02:22:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2021-10-11 02:22:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1271 transitions. [2021-10-11 02:22:51,756 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1271 transitions. Word has length 128 [2021-10-11 02:22:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:51,757 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1271 transitions. [2021-10-11 02:22:51,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1271 transitions. [2021-10-11 02:22:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-11 02:22:51,760 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:51,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:51,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:51,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:51,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1234256178, now seen corresponding path program 1 times [2021-10-11 02:22:51,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:51,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706750703] [2021-10-11 02:22:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-11 02:22:52,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706750703] [2021-10-11 02:22:52,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282949206] [2021-10-11 02:22:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:52,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:52,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-11 02:22:52,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-11 02:22:52,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:52,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:22:52,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43624281] [2021-10-11 02:22:52,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:52,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:52,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:52,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:52,368 INFO L87 Difference]: Start difference. First operand 1043 states and 1271 transitions. Second operand 3 states. [2021-10-11 02:22:52,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:52,657 INFO L93 Difference]: Finished difference Result 2647 states and 3226 transitions. [2021-10-11 02:22:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:52,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2021-10-11 02:22:52,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:52,667 INFO L225 Difference]: With dead ends: 2647 [2021-10-11 02:22:52,667 INFO L226 Difference]: Without dead ends: 1685 [2021-10-11 02:22:52,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-10-11 02:22:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1603. [2021-10-11 02:22:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2021-10-11 02:22:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1934 transitions. [2021-10-11 02:22:52,709 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1934 transitions. Word has length 137 [2021-10-11 02:22:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:52,710 INFO L481 AbstractCegarLoop]: Abstraction has 1603 states and 1934 transitions. [2021-10-11 02:22:52,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1934 transitions. [2021-10-11 02:22:52,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-11 02:22:52,713 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:52,713 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:52,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:52,929 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:52,930 INFO L82 PathProgramCache]: Analyzing trace with hash 86629912, now seen corresponding path program 1 times [2021-10-11 02:22:52,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:52,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058337177] [2021-10-11 02:22:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 68 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-11 02:22:53,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058337177] [2021-10-11 02:22:53,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630999686] [2021-10-11 02:22:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:53,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:53,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-11 02:22:53,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-11 02:22:53,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:53,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2021-10-11 02:22:53,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832271560] [2021-10-11 02:22:53,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:53,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:53,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:53,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:53,447 INFO L87 Difference]: Start difference. First operand 1603 states and 1934 transitions. Second operand 4 states. [2021-10-11 02:22:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:53,968 INFO L93 Difference]: Finished difference Result 3765 states and 4543 transitions. [2021-10-11 02:22:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:53,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2021-10-11 02:22:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:53,980 INFO L225 Difference]: With dead ends: 3765 [2021-10-11 02:22:53,981 INFO L226 Difference]: Without dead ends: 2243 [2021-10-11 02:22:53,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:53,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2021-10-11 02:22:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1523. [2021-10-11 02:22:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2021-10-11 02:22:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1742 transitions. [2021-10-11 02:22:54,026 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1742 transitions. Word has length 141 [2021-10-11 02:22:54,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:54,026 INFO L481 AbstractCegarLoop]: Abstraction has 1523 states and 1742 transitions. [2021-10-11 02:22:54,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1742 transitions. [2021-10-11 02:22:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-10-11 02:22:54,029 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:54,030 INFO L422 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:54,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:22:54,258 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:54,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:54,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1562553775, now seen corresponding path program 1 times [2021-10-11 02:22:54,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:54,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564628146] [2021-10-11 02:22:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:54,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564628146] [2021-10-11 02:22:54,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327329817] [2021-10-11 02:22:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:54,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:54,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:54,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:54,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:54,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:22:54,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992307982] [2021-10-11 02:22:54,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:54,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:54,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:54,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:54,780 INFO L87 Difference]: Start difference. First operand 1523 states and 1742 transitions. Second operand 3 states. [2021-10-11 02:22:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:55,108 INFO L93 Difference]: Finished difference Result 3365 states and 3842 transitions. [2021-10-11 02:22:55,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:55,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2021-10-11 02:22:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:55,119 INFO L225 Difference]: With dead ends: 3365 [2021-10-11 02:22:55,119 INFO L226 Difference]: Without dead ends: 1843 [2021-10-11 02:22:55,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2021-10-11 02:22:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2021-10-11 02:22:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2021-10-11 02:22:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2026 transitions. [2021-10-11 02:22:55,166 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2026 transitions. Word has length 149 [2021-10-11 02:22:55,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:55,167 INFO L481 AbstractCegarLoop]: Abstraction has 1843 states and 2026 transitions. [2021-10-11 02:22:55,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2026 transitions. [2021-10-11 02:22:55,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-11 02:22:55,172 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:55,172 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:22:55,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:55,386 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:55,386 INFO L82 PathProgramCache]: Analyzing trace with hash 650899383, now seen corresponding path program 1 times [2021-10-11 02:22:55,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:55,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749630319] [2021-10-11 02:22:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 181 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-11 02:22:55,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749630319] [2021-10-11 02:22:55,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167443842] [2021-10-11 02:22:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:55,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:22:55,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 233 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-11 02:22:56,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 233 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-11 02:22:56,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1807871395] [2021-10-11 02:22:56,270 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2021-10-11 02:22:56,270 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:22:56,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:22:56,281 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:22:56,282 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:22:56,785 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-10-11 02:22:57,257 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-10-11 02:23:03,442 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:23:03,552 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:23:03,692 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:23:03,802 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:23:03,942 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:23:04,050 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:23:04,296 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-10-11 02:23:04,442 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-10-11 02:23:04,611 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-10-11 02:23:04,770 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-10-11 02:23:04,919 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2021-10-11 02:23:06,615 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2021-10-11 02:23:06,767 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:23:07,009 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 149 [2021-10-11 02:23:07,165 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:23:07,415 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:23:07,656 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:23:07,930 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 149 [2021-10-11 02:23:08,072 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:23:08,220 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:23:08,389 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:23:08,616 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2021-10-11 02:23:11,925 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-10-11 02:23:12,061 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-10-11 02:23:12,233 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-10-11 02:23:12,362 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-10-11 02:23:12,570 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2021-10-11 02:23:12,708 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-10-11 02:23:12,845 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-10-11 02:23:12,987 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-10-11 02:23:17,954 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 33 [2021-10-11 02:23:18,085 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6376 conjuctions. This might take some time... [2021-10-11 02:23:18,331 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 276 conjuctions. [2021-10-11 02:23:18,340 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 33 [2021-10-11 02:23:18,467 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6376 conjuctions. This might take some time... [2021-10-11 02:23:18,713 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 276 conjuctions. [2021-10-11 02:23:18,811 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 33 [2021-10-11 02:23:18,878 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6376 conjuctions. This might take some time... [2021-10-11 02:23:19,043 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 276 conjuctions. [2021-10-11 02:23:22,392 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:22,814 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2021-10-11 02:23:23,059 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-10-11 02:23:23,193 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-10-11 02:23:23,499 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2021-10-11 02:23:23,810 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2021-10-11 02:23:24,177 WARN L197 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2021-10-11 02:23:24,358 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-10-11 02:23:24,690 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2021-10-11 02:23:26,850 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 102 [2021-10-11 02:23:32,176 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:32,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:32,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-10-11 02:23:32,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819797043] [2021-10-11 02:23:32,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:23:32,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:32,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:23:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:23:32,179 INFO L87 Difference]: Start difference. First operand 1843 states and 2026 transitions. Second operand 8 states. [2021-10-11 02:23:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:33,252 INFO L93 Difference]: Finished difference Result 2922 states and 3204 transitions. [2021-10-11 02:23:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:23:33,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2021-10-11 02:23:33,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:33,253 INFO L225 Difference]: With dead ends: 2922 [2021-10-11 02:23:33,253 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:33,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 482 SyntacticMatches, 184 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:23:33,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:33,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:33,258 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 225 [2021-10-11 02:23:33,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:33,258 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:33,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:23:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:33,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:33,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:33,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:23:33,742 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-10-11 02:23:33,949 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-10-11 02:23:33,952 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:23:33,952 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:23:33,953 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L514-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L517-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:23:33,954 INFO L262 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:23:33,955 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 518) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:23:33,956 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:23:33,957 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:23:33,957 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:23:33,957 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:23:33,957 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:23:33,957 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:23:33,957 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:23:33,957 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse6 (<= ~a28~0 9)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 8)) (.cse4 (= ~a11~0 0)) (.cse8 (<= ~a19~0 0)) (.cse3 (= ~a25~0 1)) (.cse7 (= ~a11~0 1)) (.cse5 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse4 .cse5 (<= ~a28~0 10) (< 8 ~a28~0)) (and .cse0 (= ~a25~0 0) .cse1 .cse2 .cse4 (<= ~a28~0 7)) (and .cse6 .cse7 .cse5) (and .cse8 .cse4 .cse6 .cse5) (and .cse8 .cse1 .cse2 .cse3 .cse4 (= ~a28~0 10)) (and .cse8 .cse7) (and .cse3 .cse7 .cse5))) [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:23:33,958 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse6 (<= ~a28~0 9)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 8)) (.cse4 (= ~a11~0 0)) (.cse8 (<= ~a19~0 0)) (.cse3 (= ~a25~0 1)) (.cse7 (= ~a11~0 1)) (.cse5 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse4 .cse5 (<= ~a28~0 10) (< 8 ~a28~0)) (and .cse0 (= ~a25~0 0) .cse1 .cse2 .cse4 (<= ~a28~0 7)) (and .cse6 .cse7 .cse5) (and .cse8 .cse4 .cse6 .cse5) (and .cse8 .cse1 .cse2 .cse3 .cse4 (= ~a28~0 10)) (and .cse8 .cse7) (and .cse3 .cse7 .cse5))) [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:23:33,959 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:23:33,960 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:23:33,960 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:23:33,960 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:23:33,960 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:23:33,960 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:23:34,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:34 BoogieIcfgContainer [2021-10-11 02:23:34,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:34,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:34,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:34,016 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:34,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:45" (3/4) ... [2021-10-11 02:23:34,019 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:34,064 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-11 02:23:34,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:23:34,075 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:23:34,077 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:23:34,242 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4459010-5db5-4048-8c18-c6b49c66c4ca/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:34,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:34,243 INFO L168 Benchmark]: Toolchain (without parser) took 51848.41 ms. Allocated memory was 100.7 MB in the beginning and 926.9 MB in the end (delta: 826.3 MB). Free memory was 77.4 MB in the beginning and 746.6 MB in the end (delta: -669.2 MB). Peak memory consumption was 157.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:34,244 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 60.8 MB in the beginning and 60.7 MB in the end (delta: 23.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:34,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.13 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 56.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:34,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.05 ms. Allocated memory is still 100.7 MB. Free memory was 56.1 MB in the beginning and 50.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:34,245 INFO L168 Benchmark]: Boogie Preprocessor took 87.71 ms. Allocated memory is still 100.7 MB. Free memory was 50.6 MB in the beginning and 46.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:34,246 INFO L168 Benchmark]: RCFGBuilder took 2028.26 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 46.1 MB in the beginning and 57.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 45.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:34,246 INFO L168 Benchmark]: TraceAbstraction took 48698.19 ms. Allocated memory was 146.8 MB in the beginning and 926.9 MB in the end (delta: 780.1 MB). Free memory was 56.8 MB in the beginning and 761.3 MB in the end (delta: -704.4 MB). Peak memory consumption was 76.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:34,246 INFO L168 Benchmark]: Witness Printer took 227.39 ms. Allocated memory is still 926.9 MB. Free memory was 761.3 MB in the beginning and 746.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:34,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 60.8 MB in the beginning and 60.7 MB in the end (delta: 23.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.13 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 56.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 107.05 ms. Allocated memory is still 100.7 MB. Free memory was 56.1 MB in the beginning and 50.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.71 ms. Allocated memory is still 100.7 MB. Free memory was 50.6 MB in the beginning and 46.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2028.26 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 46.1 MB in the beginning and 57.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 45.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 48698.19 ms. Allocated memory was 146.8 MB in the beginning and 926.9 MB in the end (delta: 780.1 MB). Free memory was 56.8 MB in the beginning and 761.3 MB in the end (delta: -704.4 MB). Peak memory consumption was 76.8 MB. Max. memory is 16.1 GB. * Witness Printer took 227.39 ms. Allocated memory is still 926.9 MB. Free memory was 761.3 MB in the beginning and 746.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 518]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && a11 == 0) || ((((a19 == 1 && a11 == 0) && a17 <= 8) && a28 <= 10) && 8 < a28)) || (((((a19 == 1 && a25 == 0) && a21 == 1) && a17 == 8) && a11 == 0) && a28 <= 7)) || ((a28 <= 9 && a11 == 1) && a17 <= 8)) || (((a19 <= 0 && a11 == 0) && a28 <= 9) && a17 <= 8)) || (((((a19 <= 0 && a21 == 1) && a17 == 8) && a25 == 1) && a11 == 0) && a28 == 10)) || (a19 <= 0 && a11 == 1)) || ((a25 == 1 && a11 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && a11 == 0) || ((((a19 == 1 && a11 == 0) && a17 <= 8) && a28 <= 10) && 8 < a28)) || (((((a19 == 1 && a25 == 0) && a21 == 1) && a17 == 8) && a11 == 0) && a28 <= 7)) || ((a28 <= 9 && a11 == 1) && a17 <= 8)) || (((a19 <= 0 && a11 == 0) && a28 <= 9) && a17 <= 8)) || (((((a19 <= 0 && a21 == 1) && a17 == 8) && a25 == 1) && a11 == 0) && a28 == 10)) || (a19 <= 0 && a11 == 1)) || ((a25 == 1 && a11 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 48.0s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 785 SDtfs, 970 SDslu, 106 SDs, 0 SdLazy, 3840 SolverSat, 726 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2207 GetRequests, 1974 SyntacticMatches, 188 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1843occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1122 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 69 NumberOfFragments, 223 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2194 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 396 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2418 NumberOfCodeBlocks, 2418 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3368 ConstructedInterpolants, 0 QuantifiedInterpolants, 1388874 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2320 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 26 InterpolantComputations, 17 PerfectInterpolantSequences, 1920/2106 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...