./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label51.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f42c9bf5e9178aa734a0f203b0a14c3218f112b3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:17:08,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:17:08,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:17:08,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:17:08,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:17:08,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:17:08,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:17:08,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:17:08,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:17:08,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:17:08,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:17:08,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:17:08,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:17:08,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:17:08,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:17:08,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:17:08,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:17:08,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:17:08,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:17:08,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:17:08,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:17:08,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:17:08,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:17:08,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:17:08,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:17:08,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:17:08,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:17:08,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:17:08,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:17:08,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:17:08,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:17:08,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:17:08,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:17:08,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:17:08,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:17:08,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:17:08,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:17:08,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:17:08,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:17:08,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:17:08,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:17:08,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:17:08,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:17:08,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:17:08,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:17:08,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:17:08,589 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:17:08,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:17:08,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:17:08,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:17:08,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:17:08,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:17:08,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:17:08,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:17:08,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:17:08,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:17:08,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:17:08,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:17:08,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:17:08,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:17:08,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:17:08,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:17:08,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:17:08,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:17:08,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:17:08,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:17:08,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:17:08,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:17:08,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:17:08,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:17:08,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:17:08,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42c9bf5e9178aa734a0f203b0a14c3218f112b3 [2020-11-29 19:17:08,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:17:08,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:17:08,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:17:08,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:17:08,886 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:17:08,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/../../sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2020-11-29 19:17:09,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/data/d94f0dd96/d09090e0d9e44840ad10603c5e757d29/FLAGe4a11a563 [2020-11-29 19:17:09,766 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:17:09,767 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2020-11-29 19:17:09,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/data/d94f0dd96/d09090e0d9e44840ad10603c5e757d29/FLAGe4a11a563 [2020-11-29 19:17:09,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/data/d94f0dd96/d09090e0d9e44840ad10603c5e757d29 [2020-11-29 19:17:09,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:17:09,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:17:09,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:17:09,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:17:10,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:17:10,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:17:09" (1/1) ... [2020-11-29 19:17:10,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6347feef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10, skipping insertion in model container [2020-11-29 19:17:10,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:17:09" (1/1) ... [2020-11-29 19:17:10,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:17:10,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:17:10,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:17:10,550 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:17:10,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:17:10,889 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:17:10,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10 WrapperNode [2020-11-29 19:17:10,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:17:10,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:17:10,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:17:10,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:17:10,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:10,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:11,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:17:11,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:17:11,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:17:11,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:17:11,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:11,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:11,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:11,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:11,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:11,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:11,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... [2020-11-29 19:17:11,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:17:11,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:17:11,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:17:11,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:17:11,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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 [2020-11-29 19:17:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:17:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:17:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:17:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:17:13,085 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:17:13,085 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:17:13,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:17:13 BoogieIcfgContainer [2020-11-29 19:17:13,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:17:13,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:17:13,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:17:13,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:17:13,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:17:09" (1/3) ... [2020-11-29 19:17:13,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f2f939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:17:13, skipping insertion in model container [2020-11-29 19:17:13,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:17:10" (2/3) ... [2020-11-29 19:17:13,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f2f939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:17:13, skipping insertion in model container [2020-11-29 19:17:13,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:17:13" (3/3) ... [2020-11-29 19:17:13,102 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label51.c [2020-11-29 19:17:13,115 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:17:13,121 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:17:13,135 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:17:13,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:17:13,175 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:17:13,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:17:13,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:17:13,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:17:13,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:17:13,176 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:17:13,176 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:17:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2020-11-29 19:17:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 19:17:13,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:13,218 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] [2020-11-29 19:17:13,219 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:13,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:13,226 INFO L82 PathProgramCache]: Analyzing trace with hash -596708735, now seen corresponding path program 1 times [2020-11-29 19:17:13,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:13,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779206972] [2020-11-29 19:17:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:17:13,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779206972] [2020-11-29 19:17:13,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:13,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:17:13,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877064809] [2020-11-29 19:17:13,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:13,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:13,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:13,610 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 3 states. [2020-11-29 19:17:15,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:15,058 INFO L93 Difference]: Finished difference Result 670 states and 1201 transitions. [2020-11-29 19:17:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:15,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-11-29 19:17:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:15,077 INFO L225 Difference]: With dead ends: 670 [2020-11-29 19:17:15,078 INFO L226 Difference]: Without dead ends: 360 [2020-11-29 19:17:15,082 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 [2020-11-29 19:17:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-11-29 19:17:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2020-11-29 19:17:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-11-29 19:17:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 546 transitions. [2020-11-29 19:17:15,162 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 546 transitions. Word has length 35 [2020-11-29 19:17:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:15,162 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 546 transitions. [2020-11-29 19:17:15,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:15,163 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 546 transitions. [2020-11-29 19:17:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-11-29 19:17:15,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:15,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:15,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:17:15,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:15,169 INFO L82 PathProgramCache]: Analyzing trace with hash -255305979, now seen corresponding path program 1 times [2020-11-29 19:17:15,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:15,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202170274] [2020-11-29 19:17:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:17:15,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202170274] [2020-11-29 19:17:15,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:15,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:17:15,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270503364] [2020-11-29 19:17:15,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:15,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:15,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:15,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:15,391 INFO L87 Difference]: Start difference. First operand 360 states and 546 transitions. Second operand 3 states. [2020-11-29 19:17:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:16,386 INFO L93 Difference]: Finished difference Result 1074 states and 1633 transitions. [2020-11-29 19:17:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:16,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-11-29 19:17:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:16,393 INFO L225 Difference]: With dead ends: 1074 [2020-11-29 19:17:16,393 INFO L226 Difference]: Without dead ends: 716 [2020-11-29 19:17:16,397 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 [2020-11-29 19:17:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-11-29 19:17:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2020-11-29 19:17:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-11-29 19:17:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 968 transitions. [2020-11-29 19:17:16,458 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 968 transitions. Word has length 110 [2020-11-29 19:17:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:16,458 INFO L481 AbstractCegarLoop]: Abstraction has 716 states and 968 transitions. [2020-11-29 19:17:16,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 968 transitions. [2020-11-29 19:17:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-11-29 19:17:16,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:16,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:16,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:17:16,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:16,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1312309583, now seen corresponding path program 1 times [2020-11-29 19:17:16,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:16,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084910887] [2020-11-29 19:17:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:17:16,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084910887] [2020-11-29 19:17:16,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:16,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:16,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233354229] [2020-11-29 19:17:16,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:17:16,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:16,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:17:16,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:17:16,809 INFO L87 Difference]: Start difference. First operand 716 states and 968 transitions. Second operand 4 states. [2020-11-29 19:17:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:18,410 INFO L93 Difference]: Finished difference Result 1964 states and 2570 transitions. [2020-11-29 19:17:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:17:18,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-11-29 19:17:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:18,419 INFO L225 Difference]: With dead ends: 1964 [2020-11-29 19:17:18,419 INFO L226 Difference]: Without dead ends: 1250 [2020-11-29 19:17:18,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:17:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-11-29 19:17:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2020-11-29 19:17:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-11-29 19:17:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1544 transitions. [2020-11-29 19:17:18,462 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1544 transitions. Word has length 114 [2020-11-29 19:17:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:18,463 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1544 transitions. [2020-11-29 19:17:18,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:17:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1544 transitions. [2020-11-29 19:17:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-29 19:17:18,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:18,482 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:17:18,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:17:18,483 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1923061470, now seen corresponding path program 1 times [2020-11-29 19:17:18,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:18,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286326149] [2020-11-29 19:17:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 19:17:18,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286326149] [2020-11-29 19:17:18,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:18,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:18,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958347871] [2020-11-29 19:17:18,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:17:18,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:18,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:17:18,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:17:18,818 INFO L87 Difference]: Start difference. First operand 1250 states and 1544 transitions. Second operand 4 states. [2020-11-29 19:17:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:19,998 INFO L93 Difference]: Finished difference Result 2705 states and 3353 transitions. [2020-11-29 19:17:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:17:19,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-11-29 19:17:20,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:20,012 INFO L225 Difference]: With dead ends: 2705 [2020-11-29 19:17:20,012 INFO L226 Difference]: Without dead ends: 1606 [2020-11-29 19:17:20,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:17:20,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-11-29 19:17:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2020-11-29 19:17:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-11-29 19:17:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1801 transitions. [2020-11-29 19:17:20,061 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1801 transitions. Word has length 194 [2020-11-29 19:17:20,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:20,063 INFO L481 AbstractCegarLoop]: Abstraction has 1606 states and 1801 transitions. [2020-11-29 19:17:20,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:17:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1801 transitions. [2020-11-29 19:17:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-11-29 19:17:20,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:20,071 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:20,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:17:20,072 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:20,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:20,073 INFO L82 PathProgramCache]: Analyzing trace with hash 408850568, now seen corresponding path program 1 times [2020-11-29 19:17:20,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:20,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818156020] [2020-11-29 19:17:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 146 proven. 130 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-11-29 19:17:20,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818156020] [2020-11-29 19:17:20,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077181876] [2020-11-29 19:17:20,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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 [2020-11-29 19:17:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:20,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:17:20,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-11-29 19:17:21,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:17:21,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-11-29 19:17:21,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830053090] [2020-11-29 19:17:21,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:21,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:21,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:21,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:17:21,195 INFO L87 Difference]: Start difference. First operand 1606 states and 1801 transitions. Second operand 3 states. [2020-11-29 19:17:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:22,274 INFO L93 Difference]: Finished difference Result 3388 states and 3901 transitions. [2020-11-29 19:17:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:22,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 321 [2020-11-29 19:17:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:22,288 INFO L225 Difference]: With dead ends: 3388 [2020-11-29 19:17:22,289 INFO L226 Difference]: Without dead ends: 1962 [2020-11-29 19:17:22,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:17:22,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2020-11-29 19:17:22,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2020-11-29 19:17:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-11-29 19:17:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2220 transitions. [2020-11-29 19:17:22,356 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2220 transitions. Word has length 321 [2020-11-29 19:17:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:22,357 INFO L481 AbstractCegarLoop]: Abstraction has 1962 states and 2220 transitions. [2020-11-29 19:17:22,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2220 transitions. [2020-11-29 19:17:22,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-11-29 19:17:22,363 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:22,364 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:22,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:17:22,580 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:22,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:22,580 INFO L82 PathProgramCache]: Analyzing trace with hash -448790190, now seen corresponding path program 1 times [2020-11-29 19:17:22,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:22,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878042839] [2020-11-29 19:17:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 229 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:17:23,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878042839] [2020-11-29 19:17:23,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217325337] [2020-11-29 19:17:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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 [2020-11-29 19:17:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:23,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:17:23,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-11-29 19:17:23,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:17:23,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-11-29 19:17:23,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508227993] [2020-11-29 19:17:23,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:23,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:23,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:23,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:17:23,527 INFO L87 Difference]: Start difference. First operand 1962 states and 2220 transitions. Second operand 3 states. [2020-11-29 19:17:24,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:24,580 INFO L93 Difference]: Finished difference Result 4278 states and 4949 transitions. [2020-11-29 19:17:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:24,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 325 [2020-11-29 19:17:24,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:24,594 INFO L225 Difference]: With dead ends: 4278 [2020-11-29 19:17:24,594 INFO L226 Difference]: Without dead ends: 2318 [2020-11-29 19:17:24,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:17:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-11-29 19:17:24,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1606. [2020-11-29 19:17:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-11-29 19:17:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1805 transitions. [2020-11-29 19:17:24,653 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1805 transitions. Word has length 325 [2020-11-29 19:17:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:24,660 INFO L481 AbstractCegarLoop]: Abstraction has 1606 states and 1805 transitions. [2020-11-29 19:17:24,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1805 transitions. [2020-11-29 19:17:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-11-29 19:17:24,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:24,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:24,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:17:24,896 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:24,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1468164340, now seen corresponding path program 1 times [2020-11-29 19:17:24,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:24,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601784853] [2020-11-29 19:17:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 153 proven. 130 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-11-29 19:17:25,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601784853] [2020-11-29 19:17:25,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486898161] [2020-11-29 19:17:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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 [2020-11-29 19:17:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:25,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:17:25,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-11-29 19:17:25,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:17:25,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-11-29 19:17:25,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016438665] [2020-11-29 19:17:25,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:25,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:25,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:25,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:17:25,685 INFO L87 Difference]: Start difference. First operand 1606 states and 1805 transitions. Second operand 3 states. [2020-11-29 19:17:26,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:26,675 INFO L93 Difference]: Finished difference Result 3388 states and 3919 transitions. [2020-11-29 19:17:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:26,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-11-29 19:17:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:26,689 INFO L225 Difference]: With dead ends: 3388 [2020-11-29 19:17:26,689 INFO L226 Difference]: Without dead ends: 2140 [2020-11-29 19:17:26,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:17:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2020-11-29 19:17:26,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2020-11-29 19:17:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2140 states. [2020-11-29 19:17:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2378 transitions. [2020-11-29 19:17:26,747 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2378 transitions. Word has length 328 [2020-11-29 19:17:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:26,747 INFO L481 AbstractCegarLoop]: Abstraction has 2140 states and 2378 transitions. [2020-11-29 19:17:26,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:26,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2378 transitions. [2020-11-29 19:17:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-11-29 19:17:26,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:26,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 19:17:26,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:17:26,968 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:26,968 INFO L82 PathProgramCache]: Analyzing trace with hash -824590800, now seen corresponding path program 1 times [2020-11-29 19:17:26,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:26,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606070646] [2020-11-29 19:17:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-11-29 19:17:27,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606070646] [2020-11-29 19:17:27,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:27,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:27,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332336927] [2020-11-29 19:17:27,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:27,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:27,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:27,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:27,188 INFO L87 Difference]: Start difference. First operand 2140 states and 2378 transitions. Second operand 3 states. [2020-11-29 19:17:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:28,197 INFO L93 Difference]: Finished difference Result 4990 states and 5636 transitions. [2020-11-29 19:17:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:28,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 352 [2020-11-29 19:17:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:28,215 INFO L225 Difference]: With dead ends: 4990 [2020-11-29 19:17:28,216 INFO L226 Difference]: Without dead ends: 3030 [2020-11-29 19:17:28,219 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 [2020-11-29 19:17:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2020-11-29 19:17:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2674. [2020-11-29 19:17:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-11-29 19:17:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2982 transitions. [2020-11-29 19:17:28,302 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2982 transitions. Word has length 352 [2020-11-29 19:17:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:28,303 INFO L481 AbstractCegarLoop]: Abstraction has 2674 states and 2982 transitions. [2020-11-29 19:17:28,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2982 transitions. [2020-11-29 19:17:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-11-29 19:17:28,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:28,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:17:28,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:17:28,313 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:28,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1143325191, now seen corresponding path program 1 times [2020-11-29 19:17:28,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:28,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531256035] [2020-11-29 19:17:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-11-29 19:17:28,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531256035] [2020-11-29 19:17:28,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:28,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:28,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263277196] [2020-11-29 19:17:28,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:28,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:28,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:28,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:28,590 INFO L87 Difference]: Start difference. First operand 2674 states and 2982 transitions. Second operand 3 states. [2020-11-29 19:17:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:29,604 INFO L93 Difference]: Finished difference Result 5880 states and 6603 transitions. [2020-11-29 19:17:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:29,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 359 [2020-11-29 19:17:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:29,624 INFO L225 Difference]: With dead ends: 5880 [2020-11-29 19:17:29,625 INFO L226 Difference]: Without dead ends: 3564 [2020-11-29 19:17:29,628 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 [2020-11-29 19:17:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2020-11-29 19:17:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3030. [2020-11-29 19:17:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2020-11-29 19:17:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3396 transitions. [2020-11-29 19:17:29,701 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3396 transitions. Word has length 359 [2020-11-29 19:17:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:29,702 INFO L481 AbstractCegarLoop]: Abstraction has 3030 states and 3396 transitions. [2020-11-29 19:17:29,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3396 transitions. [2020-11-29 19:17:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-11-29 19:17:29,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:29,707 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:29,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:17:29,708 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash -980433678, now seen corresponding path program 1 times [2020-11-29 19:17:29,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:29,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280906950] [2020-11-29 19:17:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 584 proven. 130 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-11-29 19:17:30,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280906950] [2020-11-29 19:17:30,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017311284] [2020-11-29 19:17:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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 [2020-11-29 19:17:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:30,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:17:30,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-11-29 19:17:30,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:17:30,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2020-11-29 19:17:30,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663706986] [2020-11-29 19:17:30,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:30,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:30,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:30,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:17:30,926 INFO L87 Difference]: Start difference. First operand 3030 states and 3396 transitions. Second operand 3 states. [2020-11-29 19:17:31,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:31,706 INFO L93 Difference]: Finished difference Result 5880 states and 6615 transitions. [2020-11-29 19:17:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:31,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 455 [2020-11-29 19:17:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:31,720 INFO L225 Difference]: With dead ends: 5880 [2020-11-29 19:17:31,721 INFO L226 Difference]: Without dead ends: 2852 [2020-11-29 19:17:31,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:17:31,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-11-29 19:17:31,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2496. [2020-11-29 19:17:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2496 states. [2020-11-29 19:17:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2609 transitions. [2020-11-29 19:17:31,792 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2609 transitions. Word has length 455 [2020-11-29 19:17:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:31,793 INFO L481 AbstractCegarLoop]: Abstraction has 2496 states and 2609 transitions. [2020-11-29 19:17:31,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2609 transitions. [2020-11-29 19:17:31,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-11-29 19:17:31,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:31,801 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:32,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:17:32,016 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:32,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:32,016 INFO L82 PathProgramCache]: Analyzing trace with hash -578629241, now seen corresponding path program 1 times [2020-11-29 19:17:32,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:32,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121295126] [2020-11-29 19:17:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2020-11-29 19:17:32,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121295126] [2020-11-29 19:17:32,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410629080] [2020-11-29 19:17:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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 [2020-11-29 19:17:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:32,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:17:32,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-11-29 19:17:33,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:17:33,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-11-29 19:17:33,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788053240] [2020-11-29 19:17:33,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:33,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:33,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:33,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:17:33,159 INFO L87 Difference]: Start difference. First operand 2496 states and 2609 transitions. Second operand 3 states. [2020-11-29 19:17:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:33,852 INFO L93 Difference]: Finished difference Result 3566 states and 3700 transitions. [2020-11-29 19:17:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:33,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 514 [2020-11-29 19:17:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:33,871 INFO L225 Difference]: With dead ends: 3566 [2020-11-29 19:17:33,872 INFO L226 Difference]: Without dead ends: 3564 [2020-11-29 19:17:33,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:17:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2020-11-29 19:17:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 2674. [2020-11-29 19:17:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-11-29 19:17:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2794 transitions. [2020-11-29 19:17:33,939 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2794 transitions. Word has length 514 [2020-11-29 19:17:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:33,940 INFO L481 AbstractCegarLoop]: Abstraction has 2674 states and 2794 transitions. [2020-11-29 19:17:33,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2794 transitions. [2020-11-29 19:17:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-11-29 19:17:33,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:33,948 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:34,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-29 19:17:34,176 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:34,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:34,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1837611666, now seen corresponding path program 1 times [2020-11-29 19:17:34,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:34,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079146098] [2020-11-29 19:17:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 857 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-11-29 19:17:34,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079146098] [2020-11-29 19:17:34,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:34,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:34,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045382387] [2020-11-29 19:17:34,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:34,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:34,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:34,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:34,841 INFO L87 Difference]: Start difference. First operand 2674 states and 2794 transitions. Second operand 3 states. [2020-11-29 19:17:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:35,445 INFO L93 Difference]: Finished difference Result 6058 states and 6339 transitions. [2020-11-29 19:17:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:35,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 635 [2020-11-29 19:17:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:35,461 INFO L225 Difference]: With dead ends: 6058 [2020-11-29 19:17:35,461 INFO L226 Difference]: Without dead ends: 3386 [2020-11-29 19:17:35,465 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 [2020-11-29 19:17:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2020-11-29 19:17:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3030. [2020-11-29 19:17:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2020-11-29 19:17:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3166 transitions. [2020-11-29 19:17:35,530 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3166 transitions. Word has length 635 [2020-11-29 19:17:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:35,531 INFO L481 AbstractCegarLoop]: Abstraction has 3030 states and 3166 transitions. [2020-11-29 19:17:35,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:35,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3166 transitions. [2020-11-29 19:17:35,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2020-11-29 19:17:35,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:35,539 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:35,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 19:17:35,540 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:35,541 INFO L82 PathProgramCache]: Analyzing trace with hash -771161532, now seen corresponding path program 1 times [2020-11-29 19:17:35,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:35,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695273224] [2020-11-29 19:17:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 993 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-11-29 19:17:36,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695273224] [2020-11-29 19:17:36,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:36,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:36,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345895285] [2020-11-29 19:17:36,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:36,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:36,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:36,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:36,259 INFO L87 Difference]: Start difference. First operand 3030 states and 3166 transitions. Second operand 3 states. [2020-11-29 19:17:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:36,814 INFO L93 Difference]: Finished difference Result 6592 states and 6878 transitions. [2020-11-29 19:17:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:36,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 695 [2020-11-29 19:17:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:36,829 INFO L225 Difference]: With dead ends: 6592 [2020-11-29 19:17:36,830 INFO L226 Difference]: Without dead ends: 3564 [2020-11-29 19:17:36,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2020-11-29 19:17:36,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3386. [2020-11-29 19:17:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2020-11-29 19:17:36,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3527 transitions. [2020-11-29 19:17:36,894 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3527 transitions. Word has length 695 [2020-11-29 19:17:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:36,895 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 3527 transitions. [2020-11-29 19:17:36,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3527 transitions. [2020-11-29 19:17:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-11-29 19:17:36,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:36,906 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:36,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:17:36,906 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:36,907 INFO L82 PathProgramCache]: Analyzing trace with hash -180185874, now seen corresponding path program 1 times [2020-11-29 19:17:36,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:36,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958055299] [2020-11-29 19:17:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 1314 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-11-29 19:17:37,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958055299] [2020-11-29 19:17:37,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429592997] [2020-11-29 19:17:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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 [2020-11-29 19:17:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:37,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:17:37,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-11-29 19:17:38,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:17:38,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-29 19:17:38,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609109703] [2020-11-29 19:17:38,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:38,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:38,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:38,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:17:38,379 INFO L87 Difference]: Start difference. First operand 3386 states and 3527 transitions. Second operand 3 states. [2020-11-29 19:17:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:38,899 INFO L93 Difference]: Finished difference Result 6948 states and 7231 transitions. [2020-11-29 19:17:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:38,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 790 [2020-11-29 19:17:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:38,914 INFO L225 Difference]: With dead ends: 6948 [2020-11-29 19:17:38,914 INFO L226 Difference]: Without dead ends: 3564 [2020-11-29 19:17:38,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:17:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2020-11-29 19:17:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3386. [2020-11-29 19:17:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2020-11-29 19:17:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3504 transitions. [2020-11-29 19:17:38,978 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3504 transitions. Word has length 790 [2020-11-29 19:17:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:38,980 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 3504 transitions. [2020-11-29 19:17:38,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3504 transitions. [2020-11-29 19:17:39,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-11-29 19:17:39,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:39,031 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:39,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:17:39,240 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:39,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:39,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1837233190, now seen corresponding path program 1 times [2020-11-29 19:17:39,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:39,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156295006] [2020-11-29 19:17:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2298 backedges. 1688 proven. 155 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2020-11-29 19:17:40,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156295006] [2020-11-29 19:17:40,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735170451] [2020-11-29 19:17:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/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 [2020-11-29 19:17:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:40,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:17:40,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2298 backedges. 1688 proven. 155 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2020-11-29 19:17:40,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:17:40,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-29 19:17:40,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305971062] [2020-11-29 19:17:40,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:17:40,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:17:40,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:17:40,952 INFO L87 Difference]: Start difference. First operand 3386 states and 3504 transitions. Second operand 4 states. [2020-11-29 19:17:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:41,865 INFO L93 Difference]: Finished difference Result 7482 states and 7749 transitions. [2020-11-29 19:17:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:17:41,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 865 [2020-11-29 19:17:41,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:41,874 INFO L225 Difference]: With dead ends: 7482 [2020-11-29 19:17:41,874 INFO L226 Difference]: Without dead ends: 4098 [2020-11-29 19:17:41,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:17:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-11-29 19:17:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3742. [2020-11-29 19:17:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2020-11-29 19:17:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 3881 transitions. [2020-11-29 19:17:41,945 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 3881 transitions. Word has length 865 [2020-11-29 19:17:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:41,946 INFO L481 AbstractCegarLoop]: Abstraction has 3742 states and 3881 transitions. [2020-11-29 19:17:41,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:17:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 3881 transitions. [2020-11-29 19:17:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2020-11-29 19:17:41,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:41,959 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:42,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 19:17:42,176 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:42,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1968214841, now seen corresponding path program 1 times [2020-11-29 19:17:42,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:42,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017211212] [2020-11-29 19:17:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 1925 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2020-11-29 19:17:43,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017211212] [2020-11-29 19:17:43,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:43,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:43,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226573407] [2020-11-29 19:17:43,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:43,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:43,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:43,331 INFO L87 Difference]: Start difference. First operand 3742 states and 3881 transitions. Second operand 3 states. [2020-11-29 19:17:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:43,958 INFO L93 Difference]: Finished difference Result 7838 states and 8127 transitions. [2020-11-29 19:17:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:43,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 948 [2020-11-29 19:17:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:43,968 INFO L225 Difference]: With dead ends: 7838 [2020-11-29 19:17:43,968 INFO L226 Difference]: Without dead ends: 4098 [2020-11-29 19:17:43,973 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 [2020-11-29 19:17:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-11-29 19:17:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3920. [2020-11-29 19:17:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2020-11-29 19:17:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 4061 transitions. [2020-11-29 19:17:44,039 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 4061 transitions. Word has length 948 [2020-11-29 19:17:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:44,040 INFO L481 AbstractCegarLoop]: Abstraction has 3920 states and 4061 transitions. [2020-11-29 19:17:44,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 4061 transitions. [2020-11-29 19:17:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-11-29 19:17:44,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:44,055 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:44,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 19:17:44,055 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:44,056 INFO L82 PathProgramCache]: Analyzing trace with hash 75713936, now seen corresponding path program 1 times [2020-11-29 19:17:44,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:44,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934301090] [2020-11-29 19:17:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1939 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2020-11-29 19:17:45,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934301090] [2020-11-29 19:17:45,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:45,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:45,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729518071] [2020-11-29 19:17:45,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:45,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:45,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:45,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:45,181 INFO L87 Difference]: Start difference. First operand 3920 states and 4061 transitions. Second operand 3 states. [2020-11-29 19:17:45,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:45,831 INFO L93 Difference]: Finished difference Result 8016 states and 8299 transitions. [2020-11-29 19:17:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:45,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 955 [2020-11-29 19:17:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:45,849 INFO L225 Difference]: With dead ends: 8016 [2020-11-29 19:17:45,849 INFO L226 Difference]: Without dead ends: 4098 [2020-11-29 19:17:45,854 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 [2020-11-29 19:17:45,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-11-29 19:17:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3920. [2020-11-29 19:17:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2020-11-29 19:17:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 4054 transitions. [2020-11-29 19:17:45,925 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 4054 transitions. Word has length 955 [2020-11-29 19:17:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:45,926 INFO L481 AbstractCegarLoop]: Abstraction has 3920 states and 4054 transitions. [2020-11-29 19:17:45,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 4054 transitions. [2020-11-29 19:17:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2020-11-29 19:17:45,940 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:45,941 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:45,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 19:17:45,941 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:45,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2053794669, now seen corresponding path program 1 times [2020-11-29 19:17:45,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:45,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108620781] [2020-11-29 19:17:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3493 backedges. 2444 proven. 72 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2020-11-29 19:17:47,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108620781] [2020-11-29 19:17:47,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896623458] [2020-11-29 19:17:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:17:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:47,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:17:47,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:47,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:17:47,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:17:47,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:17:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3493 backedges. 2157 proven. 0 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2020-11-29 19:17:48,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:17:48,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-11-29 19:17:48,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048105366] [2020-11-29 19:17:48,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:17:48,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:48,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:17:48,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=27, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:17:48,580 INFO L87 Difference]: Start difference. First operand 3920 states and 4054 transitions. Second operand 5 states. [2020-11-29 19:17:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:49,770 INFO L93 Difference]: Finished difference Result 8906 states and 9203 transitions. [2020-11-29 19:17:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:17:49,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1032 [2020-11-29 19:17:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:49,779 INFO L225 Difference]: With dead ends: 8906 [2020-11-29 19:17:49,779 INFO L226 Difference]: Without dead ends: 4988 [2020-11-29 19:17:49,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1030 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=27, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:17:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2020-11-29 19:17:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4276. [2020-11-29 19:17:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-11-29 19:17:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4419 transitions. [2020-11-29 19:17:49,861 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4419 transitions. Word has length 1032 [2020-11-29 19:17:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:49,862 INFO L481 AbstractCegarLoop]: Abstraction has 4276 states and 4419 transitions. [2020-11-29 19:17:49,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:17:49,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4419 transitions. [2020-11-29 19:17:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2020-11-29 19:17:49,878 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:49,879 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:50,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 19:17:50,104 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:50,104 INFO L82 PathProgramCache]: Analyzing trace with hash 665437572, now seen corresponding path program 1 times [2020-11-29 19:17:50,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:50,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629874996] [2020-11-29 19:17:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3681 backedges. 1700 proven. 0 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2020-11-29 19:17:51,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629874996] [2020-11-29 19:17:51,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:17:51,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:17:51,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055002834] [2020-11-29 19:17:51,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:51,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:51,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:51,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:17:51,331 INFO L87 Difference]: Start difference. First operand 4276 states and 4419 transitions. Second operand 3 states. [2020-11-29 19:17:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:51,928 INFO L93 Difference]: Finished difference Result 8728 states and 9015 transitions. [2020-11-29 19:17:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:51,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1065 [2020-11-29 19:17:51,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:51,938 INFO L225 Difference]: With dead ends: 8728 [2020-11-29 19:17:51,939 INFO L226 Difference]: Without dead ends: 4454 [2020-11-29 19:17:51,943 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 [2020-11-29 19:17:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2020-11-29 19:17:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4276. [2020-11-29 19:17:52,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-11-29 19:17:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4375 transitions. [2020-11-29 19:17:52,014 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4375 transitions. Word has length 1065 [2020-11-29 19:17:52,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:52,015 INFO L481 AbstractCegarLoop]: Abstraction has 4276 states and 4375 transitions. [2020-11-29 19:17:52,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4375 transitions. [2020-11-29 19:17:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1494 [2020-11-29 19:17:52,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:52,042 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:52,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 19:17:52,042 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2080244965, now seen corresponding path program 1 times [2020-11-29 19:17:52,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:52,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543753141] [2020-11-29 19:17:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7035 backedges. 4438 proven. 252 refuted. 0 times theorem prover too weak. 2345 trivial. 0 not checked. [2020-11-29 19:17:55,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543753141] [2020-11-29 19:17:55,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652906346] [2020-11-29 19:17:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:17:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:56,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:17:56,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7035 backedges. 2426 proven. 0 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2020-11-29 19:17:57,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:17:57,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-11-29 19:17:57,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752539091] [2020-11-29 19:17:57,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:17:57,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:17:57,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:17:57,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:17:57,609 INFO L87 Difference]: Start difference. First operand 4276 states and 4375 transitions. Second operand 3 states. [2020-11-29 19:17:58,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:58,195 INFO L93 Difference]: Finished difference Result 8906 states and 9108 transitions. [2020-11-29 19:17:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:17:58,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1493 [2020-11-29 19:17:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:17:58,206 INFO L225 Difference]: With dead ends: 8906 [2020-11-29 19:17:58,206 INFO L226 Difference]: Without dead ends: 4632 [2020-11-29 19:17:58,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1497 GetRequests, 1492 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:17:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2020-11-29 19:17:58,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4632. [2020-11-29 19:17:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4632 states. [2020-11-29 19:17:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4724 transitions. [2020-11-29 19:17:58,285 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4724 transitions. Word has length 1493 [2020-11-29 19:17:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:17:58,286 INFO L481 AbstractCegarLoop]: Abstraction has 4632 states and 4724 transitions. [2020-11-29 19:17:58,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:17:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4724 transitions. [2020-11-29 19:17:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2020-11-29 19:17:58,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:17:58,319 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:17:58,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:17:58,536 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:17:58,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:58,536 INFO L82 PathProgramCache]: Analyzing trace with hash 2075438937, now seen corresponding path program 1 times [2020-11-29 19:17:58,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:58,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115041412] [2020-11-29 19:17:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9366 backedges. 2557 proven. 0 refuted. 0 times theorem prover too weak. 6809 trivial. 0 not checked. [2020-11-29 19:18:00,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115041412] [2020-11-29 19:18:00,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:18:00,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:18:00,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977864791] [2020-11-29 19:18:00,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:18:00,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:18:00,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:18:00,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:18:00,830 INFO L87 Difference]: Start difference. First operand 4632 states and 4724 transitions. Second operand 3 states. [2020-11-29 19:18:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:18:01,394 INFO L93 Difference]: Finished difference Result 9440 states and 9625 transitions. [2020-11-29 19:18:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:18:01,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1692 [2020-11-29 19:18:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:18:01,406 INFO L225 Difference]: With dead ends: 9440 [2020-11-29 19:18:01,406 INFO L226 Difference]: Without dead ends: 4632 [2020-11-29 19:18:01,412 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 [2020-11-29 19:18:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2020-11-29 19:18:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4454. [2020-11-29 19:18:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4454 states. [2020-11-29 19:18:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4534 transitions. [2020-11-29 19:18:01,487 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4534 transitions. Word has length 1692 [2020-11-29 19:18:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:18:01,489 INFO L481 AbstractCegarLoop]: Abstraction has 4454 states and 4534 transitions. [2020-11-29 19:18:01,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:18:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4534 transitions. [2020-11-29 19:18:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1726 [2020-11-29 19:18:01,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:18:01,541 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:18:01,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 19:18:01,542 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:18:01,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:01,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1589858536, now seen corresponding path program 1 times [2020-11-29 19:18:01,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:18:01,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722582418] [2020-11-29 19:18:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:18:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9719 backedges. 6578 proven. 0 refuted. 0 times theorem prover too weak. 3141 trivial. 0 not checked. [2020-11-29 19:18:04,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722582418] [2020-11-29 19:18:04,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:18:04,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:18:04,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627708407] [2020-11-29 19:18:04,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:18:04,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:18:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:18:04,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:18:04,737 INFO L87 Difference]: Start difference. First operand 4454 states and 4534 transitions. Second operand 4 states. [2020-11-29 19:18:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:18:05,758 INFO L93 Difference]: Finished difference Result 8906 states and 9072 transitions. [2020-11-29 19:18:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:18:05,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1725 [2020-11-29 19:18:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:18:05,771 INFO L225 Difference]: With dead ends: 8906 [2020-11-29 19:18:05,774 INFO L226 Difference]: Without dead ends: 4632 [2020-11-29 19:18:05,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:18:05,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2020-11-29 19:18:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4454. [2020-11-29 19:18:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4454 states. [2020-11-29 19:18:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4523 transitions. [2020-11-29 19:18:05,862 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4523 transitions. Word has length 1725 [2020-11-29 19:18:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:18:05,864 INFO L481 AbstractCegarLoop]: Abstraction has 4454 states and 4523 transitions. [2020-11-29 19:18:05,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:18:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4523 transitions. [2020-11-29 19:18:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1743 [2020-11-29 19:18:05,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:18:05,902 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:18:05,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 19:18:05,902 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:18:05,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:05,903 INFO L82 PathProgramCache]: Analyzing trace with hash 154720864, now seen corresponding path program 1 times [2020-11-29 19:18:05,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:18:05,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729415578] [2020-11-29 19:18:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:18:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9519 backedges. 2756 proven. 1045 refuted. 0 times theorem prover too weak. 5718 trivial. 0 not checked. [2020-11-29 19:18:09,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729415578] [2020-11-29 19:18:09,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934198678] [2020-11-29 19:18:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:18:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:09,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2133 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:18:09,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:18:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9519 backedges. 3801 proven. 0 refuted. 0 times theorem prover too weak. 5718 trivial. 0 not checked. [2020-11-29 19:18:11,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:18:11,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-11-29 19:18:11,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532309960] [2020-11-29 19:18:11,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:18:11,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:18:11,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:18:11,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:18:11,392 INFO L87 Difference]: Start difference. First operand 4454 states and 4523 transitions. Second operand 3 states. [2020-11-29 19:18:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:18:12,093 INFO L93 Difference]: Finished difference Result 8550 states and 8679 transitions. [2020-11-29 19:18:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:18:12,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1742 [2020-11-29 19:18:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:18:12,099 INFO L225 Difference]: With dead ends: 8550 [2020-11-29 19:18:12,099 INFO L226 Difference]: Without dead ends: 3386 [2020-11-29 19:18:12,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1745 GetRequests, 1741 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:18:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2020-11-29 19:18:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3386. [2020-11-29 19:18:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2020-11-29 19:18:12,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3422 transitions. [2020-11-29 19:18:12,150 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3422 transitions. Word has length 1742 [2020-11-29 19:18:12,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:18:12,152 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 3422 transitions. [2020-11-29 19:18:12,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:18:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3422 transitions. [2020-11-29 19:18:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1814 [2020-11-29 19:18:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:18:12,190 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 19:18:12,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:18:12,404 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:18:12,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:12,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1974925534, now seen corresponding path program 1 times [2020-11-29 19:18:12,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:18:12,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154722594] [2020-11-29 19:18:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:18:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10875 backedges. 2724 proven. 0 refuted. 0 times theorem prover too weak. 8151 trivial. 0 not checked. [2020-11-29 19:18:14,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154722594] [2020-11-29 19:18:14,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:18:14,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:18:14,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322822176] [2020-11-29 19:18:14,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:18:14,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:18:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:18:14,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:18:14,737 INFO L87 Difference]: Start difference. First operand 3386 states and 3422 transitions. Second operand 4 states. [2020-11-29 19:18:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:18:15,692 INFO L93 Difference]: Finished difference Result 4278 states and 4326 transitions. [2020-11-29 19:18:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:18:15,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1813 [2020-11-29 19:18:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:18:15,698 INFO L225 Difference]: With dead ends: 4278 [2020-11-29 19:18:15,698 INFO L226 Difference]: Without dead ends: 4098 [2020-11-29 19:18:15,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:18:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-11-29 19:18:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3742. [2020-11-29 19:18:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2020-11-29 19:18:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 3784 transitions. [2020-11-29 19:18:15,749 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 3784 transitions. Word has length 1813 [2020-11-29 19:18:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:18:15,751 INFO L481 AbstractCegarLoop]: Abstraction has 3742 states and 3784 transitions. [2020-11-29 19:18:15,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:18:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 3784 transitions. [2020-11-29 19:18:15,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2116 [2020-11-29 19:18:15,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:18:15,794 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 19:18:15,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 19:18:15,796 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:18:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash 512253031, now seen corresponding path program 1 times [2020-11-29 19:18:15,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:18:15,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731634819] [2020-11-29 19:18:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:18:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14461 backedges. 3142 proven. 0 refuted. 0 times theorem prover too weak. 11319 trivial. 0 not checked. [2020-11-29 19:18:18,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731634819] [2020-11-29 19:18:18,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:18:18,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:18:18,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737806906] [2020-11-29 19:18:18,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:18:18,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:18:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:18:18,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:18:18,946 INFO L87 Difference]: Start difference. First operand 3742 states and 3784 transitions. Second operand 4 states. [2020-11-29 19:18:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:18:19,502 INFO L93 Difference]: Finished difference Result 3742 states and 3784 transitions. [2020-11-29 19:18:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:18:19,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2115 [2020-11-29 19:18:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:18:19,506 INFO L225 Difference]: With dead ends: 3742 [2020-11-29 19:18:19,506 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:18:19,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:18:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:18:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:18:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:18:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:18:19,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2115 [2020-11-29 19:18:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:18:19,510 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:18:19,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:18:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:18:19,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:18:19,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 19:18:19,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:18:19,695 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 128 [2020-11-29 19:18:19,812 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 128 [2020-11-29 19:18:20,724 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2020-11-29 19:18:21,572 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2020-11-29 19:18:21,575 INFO L274 CegarLoopResult]: For program point L762(lines 762 880) no Hoare annotation was computed. [2020-11-29 19:18:21,575 INFO L274 CegarLoopResult]: For program point L895(line 895) no Hoare annotation was computed. [2020-11-29 19:18:21,575 INFO L274 CegarLoopResult]: For program point L829(lines 829 880) no Hoare annotation was computed. [2020-11-29 19:18:21,575 INFO L274 CegarLoopResult]: For program point L631(lines 631 880) no Hoare annotation was computed. [2020-11-29 19:18:21,575 INFO L274 CegarLoopResult]: For program point L565(lines 565 880) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L698(lines 698 880) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L500(lines 500 880) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L369(lines 369 880) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L303(lines 303 880) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L436(lines 436 880) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,576 INFO L274 CegarLoopResult]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L239(lines 239 880) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L173(line 173) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L768(lines 768 880) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L636(lines 636 880) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L835(lines 835 880) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L571(lines 571 880) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L505(lines 505 880) no Hoare annotation was computed. [2020-11-29 19:18:21,577 INFO L274 CegarLoopResult]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L704(lines 704 880) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L309(lines 309 880) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L442(lines 442 880) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L376(lines 376 880) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,578 INFO L274 CegarLoopResult]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L245(lines 245 880) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L179(line 179) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L774(lines 774 880) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L642(lines 642 880) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L510(lines 510 880) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L841(lines 841 880) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,579 INFO L274 CegarLoopResult]: For program point L710(lines 710 880) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L578(lines 578 880) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L182(line 182) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L315(lines 315 880) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L448(lines 448 880) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L382(lines 382 880) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L251(lines 251 880) no Hoare annotation was computed. [2020-11-29 19:18:21,580 INFO L274 CegarLoopResult]: For program point L185(line 185) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L648(lines 648 880) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L516(lines 516 880) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L847(lines 847 880) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L781(lines 781 880) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L583(lines 583 880) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,581 INFO L274 CegarLoopResult]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,583 INFO L274 CegarLoopResult]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,583 INFO L274 CegarLoopResult]: For program point L716(lines 716 880) no Hoare annotation was computed. [2020-11-29 19:18:21,583 INFO L274 CegarLoopResult]: For program point L188(line 188) no Hoare annotation was computed. [2020-11-29 19:18:21,583 INFO L274 CegarLoopResult]: For program point L122(line 122) no Hoare annotation was computed. [2020-11-29 19:18:21,583 INFO L274 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-11-29 19:18:21,584 INFO L274 CegarLoopResult]: For program point L321(lines 321 880) no Hoare annotation was computed. [2020-11-29 19:18:21,584 INFO L274 CegarLoopResult]: For program point L454(lines 454 880) no Hoare annotation was computed. [2020-11-29 19:18:21,584 INFO L274 CegarLoopResult]: For program point L388(lines 388 880) no Hoare annotation was computed. [2020-11-29 19:18:21,584 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:18:21,584 INFO L274 CegarLoopResult]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,584 INFO L274 CegarLoopResult]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,584 INFO L274 CegarLoopResult]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,585 INFO L274 CegarLoopResult]: For program point L257(lines 257 880) no Hoare annotation was computed. [2020-11-29 19:18:21,585 INFO L274 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-11-29 19:18:21,585 INFO L274 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-11-29 19:18:21,585 INFO L274 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-11-29 19:18:21,585 INFO L274 CegarLoopResult]: For program point L852(lines 852 880) no Hoare annotation was computed. [2020-11-29 19:18:21,585 INFO L274 CegarLoopResult]: For program point L654(lines 654 880) no Hoare annotation was computed. [2020-11-29 19:18:21,585 INFO L274 CegarLoopResult]: For program point L522(lines 522 880) no Hoare annotation was computed. [2020-11-29 19:18:21,586 INFO L274 CegarLoopResult]: For program point L787(lines 787 880) no Hoare annotation was computed. [2020-11-29 19:18:21,586 INFO L274 CegarLoopResult]: For program point L589(lines 589 880) no Hoare annotation was computed. [2020-11-29 19:18:21,586 INFO L274 CegarLoopResult]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,586 INFO L274 CegarLoopResult]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,586 INFO L274 CegarLoopResult]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,586 INFO L274 CegarLoopResult]: For program point L722(lines 722 880) no Hoare annotation was computed. [2020-11-29 19:18:21,586 INFO L274 CegarLoopResult]: For program point L194(line 194) no Hoare annotation was computed. [2020-11-29 19:18:21,586 INFO L274 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-11-29 19:18:21,587 INFO L274 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-11-29 19:18:21,587 INFO L274 CegarLoopResult]: For program point L459(lines 459 880) no Hoare annotation was computed. [2020-11-29 19:18:21,587 INFO L274 CegarLoopResult]: For program point L327(lines 327 880) no Hoare annotation was computed. [2020-11-29 19:18:21,587 INFO L274 CegarLoopResult]: For program point L394(lines 394 880) no Hoare annotation was computed. [2020-11-29 19:18:21,587 INFO L274 CegarLoopResult]: For program point L262(lines 262 880) no Hoare annotation was computed. [2020-11-29 19:18:21,587 INFO L274 CegarLoopResult]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,587 INFO L274 CegarLoopResult]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,587 INFO L274 CegarLoopResult]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,588 INFO L274 CegarLoopResult]: For program point L197(line 197) no Hoare annotation was computed. [2020-11-29 19:18:21,588 INFO L274 CegarLoopResult]: For program point L131(line 131) no Hoare annotation was computed. [2020-11-29 19:18:21,588 INFO L274 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2020-11-29 19:18:21,588 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:18:21,588 INFO L274 CegarLoopResult]: For program point L858(lines 858 880) no Hoare annotation was computed. [2020-11-29 19:18:21,588 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 19:18:21,589 INFO L274 CegarLoopResult]: For program point L660(lines 660 880) no Hoare annotation was computed. [2020-11-29 19:18:21,589 INFO L274 CegarLoopResult]: For program point L528(lines 528 880) no Hoare annotation was computed. [2020-11-29 19:18:21,589 INFO L274 CegarLoopResult]: For program point L793(lines 793 880) no Hoare annotation was computed. [2020-11-29 19:18:21,589 INFO L274 CegarLoopResult]: For program point L595(lines 595 880) no Hoare annotation was computed. [2020-11-29 19:18:21,589 INFO L274 CegarLoopResult]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,589 INFO L274 CegarLoopResult]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,589 INFO L274 CegarLoopResult]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,590 INFO L274 CegarLoopResult]: For program point L728(lines 728 880) no Hoare annotation was computed. [2020-11-29 19:18:21,590 INFO L274 CegarLoopResult]: For program point L464(lines 464 880) no Hoare annotation was computed. [2020-11-29 19:18:21,590 INFO L274 CegarLoopResult]: For program point L200(line 200) no Hoare annotation was computed. [2020-11-29 19:18:21,590 INFO L274 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-11-29 19:18:21,590 INFO L274 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-11-29 19:18:21,590 INFO L274 CegarLoopResult]: For program point L333(lines 333 880) no Hoare annotation was computed. [2020-11-29 19:18:21,590 INFO L274 CegarLoopResult]: For program point L400(lines 400 880) no Hoare annotation was computed. [2020-11-29 19:18:21,590 INFO L274 CegarLoopResult]: For program point L268(lines 268 880) no Hoare annotation was computed. [2020-11-29 19:18:21,591 INFO L274 CegarLoopResult]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,591 INFO L274 CegarLoopResult]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,591 INFO L274 CegarLoopResult]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,591 INFO L274 CegarLoopResult]: For program point L203(line 203) no Hoare annotation was computed. [2020-11-29 19:18:21,591 INFO L274 CegarLoopResult]: For program point L137(line 137) no Hoare annotation was computed. [2020-11-29 19:18:21,591 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-29 19:18:21,591 INFO L274 CegarLoopResult]: For program point L864(lines 864 880) no Hoare annotation was computed. [2020-11-29 19:18:21,592 INFO L274 CegarLoopResult]: For program point L666(lines 666 880) no Hoare annotation was computed. [2020-11-29 19:18:21,592 INFO L274 CegarLoopResult]: For program point L534(lines 534 880) no Hoare annotation was computed. [2020-11-29 19:18:21,592 INFO L274 CegarLoopResult]: For program point L799(lines 799 880) no Hoare annotation was computed. [2020-11-29 19:18:21,592 INFO L274 CegarLoopResult]: For program point L601(lines 601 880) no Hoare annotation was computed. [2020-11-29 19:18:21,592 INFO L274 CegarLoopResult]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,592 INFO L274 CegarLoopResult]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,592 INFO L274 CegarLoopResult]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,592 INFO L274 CegarLoopResult]: For program point L734(lines 734 880) no Hoare annotation was computed. [2020-11-29 19:18:21,593 INFO L274 CegarLoopResult]: For program point L470(lines 470 880) no Hoare annotation was computed. [2020-11-29 19:18:21,593 INFO L274 CegarLoopResult]: For program point L206(line 206) no Hoare annotation was computed. [2020-11-29 19:18:21,593 INFO L274 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-11-29 19:18:21,593 INFO L274 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-11-29 19:18:21,593 INFO L274 CegarLoopResult]: For program point L339(lines 339 880) no Hoare annotation was computed. [2020-11-29 19:18:21,593 INFO L274 CegarLoopResult]: For program point L406(lines 406 880) no Hoare annotation was computed. [2020-11-29 19:18:21,593 INFO L274 CegarLoopResult]: For program point L274(lines 274 880) no Hoare annotation was computed. [2020-11-29 19:18:21,593 INFO L274 CegarLoopResult]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,594 INFO L274 CegarLoopResult]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,594 INFO L274 CegarLoopResult]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,594 INFO L274 CegarLoopResult]: For program point L869(lines 869 880) no Hoare annotation was computed. [2020-11-29 19:18:21,594 INFO L274 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-11-29 19:18:21,594 INFO L274 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-11-29 19:18:21,594 INFO L274 CegarLoopResult]: For program point L77(line 77) no Hoare annotation was computed. [2020-11-29 19:18:21,594 INFO L274 CegarLoopResult]: For program point L672(lines 672 880) no Hoare annotation was computed. [2020-11-29 19:18:21,594 INFO L274 CegarLoopResult]: For program point L540(lines 540 880) no Hoare annotation was computed. [2020-11-29 19:18:21,595 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 19:18:21,595 INFO L274 CegarLoopResult]: For program point L805(lines 805 880) no Hoare annotation was computed. [2020-11-29 19:18:21,595 INFO L274 CegarLoopResult]: For program point L607(lines 607 880) no Hoare annotation was computed. [2020-11-29 19:18:21,595 INFO L274 CegarLoopResult]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,595 INFO L274 CegarLoopResult]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,595 INFO L274 CegarLoopResult]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,595 INFO L274 CegarLoopResult]: For program point L740(lines 740 880) no Hoare annotation was computed. [2020-11-29 19:18:21,596 INFO L274 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-11-29 19:18:21,596 INFO L274 CegarLoopResult]: For program point L146(line 146) no Hoare annotation was computed. [2020-11-29 19:18:21,596 INFO L274 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-11-29 19:18:21,596 INFO L274 CegarLoopResult]: For program point L477(lines 477 880) no Hoare annotation was computed. [2020-11-29 19:18:21,596 INFO L274 CegarLoopResult]: For program point L345(lines 345 880) no Hoare annotation was computed. [2020-11-29 19:18:21,596 INFO L274 CegarLoopResult]: For program point L279(lines 279 880) no Hoare annotation was computed. [2020-11-29 19:18:21,596 INFO L274 CegarLoopResult]: For program point L412(lines 412 880) no Hoare annotation was computed. [2020-11-29 19:18:21,596 INFO L274 CegarLoopResult]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,597 INFO L274 CegarLoopResult]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,597 INFO L274 CegarLoopResult]: For program point L875(lines 875 880) no Hoare annotation was computed. [2020-11-29 19:18:21,597 INFO L274 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-11-29 19:18:21,597 INFO L274 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-11-29 19:18:21,597 INFO L274 CegarLoopResult]: For program point L678(lines 678 880) no Hoare annotation was computed. [2020-11-29 19:18:21,597 INFO L274 CegarLoopResult]: For program point L546(lines 546 880) no Hoare annotation was computed. [2020-11-29 19:18:21,597 INFO L274 CegarLoopResult]: For program point L811(lines 811 880) no Hoare annotation was computed. [2020-11-29 19:18:21,597 INFO L274 CegarLoopResult]: For program point L745(lines 745 880) no Hoare annotation was computed. [2020-11-29 19:18:21,598 INFO L274 CegarLoopResult]: For program point L613(lines 613 880) no Hoare annotation was computed. [2020-11-29 19:18:21,598 INFO L274 CegarLoopResult]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,598 INFO L274 CegarLoopResult]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,598 INFO L274 CegarLoopResult]: For program point L482(lines 482 880) no Hoare annotation was computed. [2020-11-29 19:18:21,598 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:18:21,598 INFO L274 CegarLoopResult]: For program point L152(line 152) no Hoare annotation was computed. [2020-11-29 19:18:21,598 INFO L274 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-11-29 19:18:21,598 INFO L274 CegarLoopResult]: For program point L351(lines 351 880) no Hoare annotation was computed. [2020-11-29 19:18:21,599 INFO L274 CegarLoopResult]: For program point L285(lines 285 880) no Hoare annotation was computed. [2020-11-29 19:18:21,599 INFO L274 CegarLoopResult]: For program point L418(lines 418 880) no Hoare annotation was computed. [2020-11-29 19:18:21,599 INFO L274 CegarLoopResult]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,599 INFO L274 CegarLoopResult]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,600 INFO L270 CegarLoopResult]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse12 (<= 7 ~a21~0)) (.cse4 (< 0 (+ ~a12~0 43))) (.cse5 (<= ~a12~0 11)) (.cse6 (<= ~a21~0 6)) (.cse13 (<= ~a21~0 7)) (.cse1 (< 80 ~a12~0)) (.cse3 (<= ~a15~0 7)) (.cse9 (<= ~a15~0 8)) (.cse11 (<= 10 ~a21~0)) (.cse0 (<= ~a24~0 1)) (.cse14 (<= ~a15~0 6)) (.cse7 (<= 8 ~a21~0)) (.cse8 (<= 9 ~a15~0)) (.cse2 (<= ~a21~0 8)) (.cse10 (<= ~a12~0 76))) (or (and .cse0 .cse1 (<= ~a12~0 73282) .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse0 .cse7 (<= (+ ~a12~0 42) 0) .cse2) (and .cse1 .cse8 (<= ~a12~0 599999)) (and (<= 9 ~a21~0) .cse0 .cse9 (<= ~a21~0 9) .cse10) (and .cse5 .cse8 .cse11) (and .cse12 .cse13 .cse3 .cse0 .cse9) (and .cse0 .cse5 .cse9 .cse11) (and .cse12 .cse13 .cse4 .cse0 .cse5 .cse9) (and (<= (+ ~a12~0 49) 0) (= ~a24~0 1) .cse9) (and (<= 8 ~a15~0) .cse0 .cse7 .cse2 .cse10) (and (<= (+ ~a12~0 9352) 0) .cse6 .cse14) (and .cse0 (or (and .cse1 .cse9 .cse11) (and .cse13 .cse1 .cse9))) (and .cse3 .cse0 .cse1) (and .cse3 .cse0 .cse9 .cse11) (and .cse0 .cse14) (and .cse7 .cse8 .cse2 .cse10))) [2020-11-29 19:18:21,600 INFO L274 CegarLoopResult]: For program point L551(lines 551 880) no Hoare annotation was computed. [2020-11-29 19:18:21,600 INFO L274 CegarLoopResult]: For program point L221(lines 221 880) no Hoare annotation was computed. [2020-11-29 19:18:21,600 INFO L274 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-11-29 19:18:21,600 INFO L274 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed. [2020-11-29 19:18:21,600 INFO L274 CegarLoopResult]: For program point L684(lines 684 880) no Hoare annotation was computed. [2020-11-29 19:18:21,600 INFO L274 CegarLoopResult]: For program point L817(lines 817 880) no Hoare annotation was computed. [2020-11-29 19:18:21,601 INFO L274 CegarLoopResult]: For program point L751(lines 751 880) no Hoare annotation was computed. [2020-11-29 19:18:21,601 INFO L274 CegarLoopResult]: For program point L619(lines 619 880) no Hoare annotation was computed. [2020-11-29 19:18:21,601 INFO L274 CegarLoopResult]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,601 INFO L274 CegarLoopResult]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,601 INFO L277 CegarLoopResult]: At program point L884(lines 884 900) the Hoare annotation is: true [2020-11-29 19:18:21,601 INFO L274 CegarLoopResult]: For program point L488(lines 488 880) no Hoare annotation was computed. [2020-11-29 19:18:21,601 INFO L274 CegarLoopResult]: For program point L290(lines 290 880) no Hoare annotation was computed. [2020-11-29 19:18:21,601 INFO L274 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-11-29 19:18:21,602 INFO L274 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-11-29 19:18:21,602 INFO L274 CegarLoopResult]: For program point L687(lines 687 880) no Hoare annotation was computed. [2020-11-29 19:18:21,602 INFO L274 CegarLoopResult]: For program point L357(lines 357 880) no Hoare annotation was computed. [2020-11-29 19:18:21,602 INFO L274 CegarLoopResult]: For program point L424(lines 424 880) no Hoare annotation was computed. [2020-11-29 19:18:21,602 INFO L274 CegarLoopResult]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,602 INFO L274 CegarLoopResult]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,602 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:18:21,603 INFO L274 CegarLoopResult]: For program point L557(lines 557 880) no Hoare annotation was computed. [2020-11-29 19:18:21,603 INFO L274 CegarLoopResult]: For program point L227(lines 227 880) no Hoare annotation was computed. [2020-11-29 19:18:21,603 INFO L274 CegarLoopResult]: For program point L161(line 161) no Hoare annotation was computed. [2020-11-29 19:18:21,603 INFO L274 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-11-29 19:18:21,603 INFO L274 CegarLoopResult]: For program point L757(lines 757 880) no Hoare annotation was computed. [2020-11-29 19:18:21,603 INFO L274 CegarLoopResult]: For program point L625(lines 625 880) no Hoare annotation was computed. [2020-11-29 19:18:21,603 INFO L274 CegarLoopResult]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,603 INFO L274 CegarLoopResult]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,604 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-11-29 19:18:21,604 INFO L274 CegarLoopResult]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,604 INFO L274 CegarLoopResult]: For program point L824(lines 824 880) no Hoare annotation was computed. [2020-11-29 19:18:21,604 INFO L270 CegarLoopResult]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse12 (<= 7 ~a21~0)) (.cse4 (< 0 (+ ~a12~0 43))) (.cse5 (<= ~a12~0 11)) (.cse6 (<= ~a21~0 6)) (.cse13 (<= ~a21~0 7)) (.cse1 (< 80 ~a12~0)) (.cse3 (<= ~a15~0 7)) (.cse9 (<= ~a15~0 8)) (.cse11 (<= 10 ~a21~0)) (.cse0 (<= ~a24~0 1)) (.cse14 (<= ~a15~0 6)) (.cse7 (<= 8 ~a21~0)) (.cse8 (<= 9 ~a15~0)) (.cse2 (<= ~a21~0 8)) (.cse10 (<= ~a12~0 76))) (or (and .cse0 .cse1 (<= ~a12~0 73282) .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse0 .cse7 (<= (+ ~a12~0 42) 0) .cse2) (and .cse1 .cse8 (<= ~a12~0 599999)) (and (<= 9 ~a21~0) .cse0 .cse9 (<= ~a21~0 9) .cse10) (and .cse5 .cse8 .cse11) (and .cse12 .cse13 .cse3 .cse0 .cse9) (and .cse0 .cse5 .cse9 .cse11) (and .cse12 .cse13 .cse4 .cse0 .cse5 .cse9) (and (<= (+ ~a12~0 49) 0) (= ~a24~0 1) .cse9) (and (<= 8 ~a15~0) .cse0 .cse7 .cse2 .cse10) (and (<= (+ ~a12~0 9352) 0) .cse6 .cse14) (and .cse0 (or (and .cse1 .cse9 .cse11) (and .cse13 .cse1 .cse9))) (and .cse3 .cse0 .cse1) (and .cse3 .cse0 .cse9 .cse11) (and .cse0 .cse14) (and .cse7 .cse8 .cse2 .cse10))) [2020-11-29 19:18:21,604 INFO L274 CegarLoopResult]: For program point L494(lines 494 880) no Hoare annotation was computed. [2020-11-29 19:18:21,605 INFO L274 CegarLoopResult]: For program point L296(lines 296 880) no Hoare annotation was computed. [2020-11-29 19:18:21,605 INFO L274 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-11-29 19:18:21,605 INFO L274 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-11-29 19:18:21,605 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-11-29 19:18:21,605 INFO L274 CegarLoopResult]: For program point L693(lines 693 880) no Hoare annotation was computed. [2020-11-29 19:18:21,605 INFO L274 CegarLoopResult]: For program point L363(lines 363 880) no Hoare annotation was computed. [2020-11-29 19:18:21,605 INFO L274 CegarLoopResult]: For program point L562(lines 562 880) no Hoare annotation was computed. [2020-11-29 19:18:21,605 INFO L274 CegarLoopResult]: For program point L430(lines 430 880) no Hoare annotation was computed. [2020-11-29 19:18:21,606 INFO L274 CegarLoopResult]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,606 INFO L274 CegarLoopResult]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,606 INFO L274 CegarLoopResult]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2020-11-29 19:18:21,606 INFO L274 CegarLoopResult]: For program point L233(lines 233 880) no Hoare annotation was computed. [2020-11-29 19:18:21,606 INFO L274 CegarLoopResult]: For program point L167(line 167) no Hoare annotation was computed. [2020-11-29 19:18:21,606 INFO L274 CegarLoopResult]: For program point L101(line 101) no Hoare annotation was computed. [2020-11-29 19:18:21,606 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-29 19:18:21,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:18:21 BoogieIcfgContainer [2020-11-29 19:18:21,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:18:21,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:18:21,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:18:21,651 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:18:21,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:17:13" (3/4) ... [2020-11-29 19:18:21,656 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:18:21,701 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 19:18:21,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:18:21,704 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:18:21,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:18:21,885 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2cff5f54-0c2d-4827-b94b-a45472e3482b/bin/uautomizer/witness.graphml [2020-11-29 19:18:21,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:18:21,887 INFO L168 Benchmark]: Toolchain (without parser) took 71891.05 ms. Allocated memory was 109.1 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 76.9 MB in the beginning and 2.6 GB in the end (delta: -2.6 GB). Peak memory consumption was 267.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:21,887 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory is still 33.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:18:21,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 894.34 ms. Allocated memory is still 109.1 MB. Free memory was 76.6 MB in the beginning and 64.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:21,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 147.18 ms. Allocated memory is still 109.1 MB. Free memory was 64.4 MB in the beginning and 55.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:21,889 INFO L168 Benchmark]: Boogie Preprocessor took 88.07 ms. Allocated memory is still 109.1 MB. Free memory was 55.2 MB in the beginning and 48.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:21,890 INFO L168 Benchmark]: RCFGBuilder took 1959.66 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 48.9 MB in the beginning and 118.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:21,890 INFO L168 Benchmark]: TraceAbstraction took 68556.53 ms. Allocated memory was 159.4 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 118.8 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.1 GB. [2020-11-29 19:18:21,891 INFO L168 Benchmark]: Witness Printer took 234.98 ms. Allocated memory is still 2.9 GB. Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 19.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:21,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory is still 33.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 894.34 ms. Allocated memory is still 109.1 MB. Free memory was 76.6 MB in the beginning and 64.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 147.18 ms. Allocated memory is still 109.1 MB. Free memory was 64.4 MB in the beginning and 55.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.07 ms. Allocated memory is still 109.1 MB. Free memory was 55.2 MB in the beginning and 48.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1959.66 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 48.9 MB in the beginning and 118.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 68556.53 ms. Allocated memory was 159.4 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 118.8 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.1 GB. * Witness Printer took 234.98 ms. Allocated memory is still 2.9 GB. Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 19.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((((((((((((((a24 <= 1 && 80 < a12) && a12 <= 73282) && a21 <= 8) || ((((a15 <= 7 && 0 < a12 + 43) && a24 <= 1) && a12 <= 11) && a21 <= 6)) || (((a24 <= 1 && 8 <= a21) && a12 + 42 <= 0) && a21 <= 8)) || ((80 < a12 && 9 <= a15) && a12 <= 599999)) || ((((9 <= a21 && a24 <= 1) && a15 <= 8) && a21 <= 9) && a12 <= 76)) || ((a12 <= 11 && 9 <= a15) && 10 <= a21)) || ((((7 <= a21 && a21 <= 7) && a15 <= 7) && a24 <= 1) && a15 <= 8)) || (((a24 <= 1 && a12 <= 11) && a15 <= 8) && 10 <= a21)) || (((((7 <= a21 && a21 <= 7) && 0 < a12 + 43) && a24 <= 1) && a12 <= 11) && a15 <= 8)) || ((a12 + 49 <= 0 && a24 == 1) && a15 <= 8)) || ((((8 <= a15 && a24 <= 1) && 8 <= a21) && a21 <= 8) && a12 <= 76)) || ((a12 + 9352 <= 0 && a21 <= 6) && a15 <= 6)) || (a24 <= 1 && (((80 < a12 && a15 <= 8) && 10 <= a21) || ((a21 <= 7 && 80 < a12) && a15 <= 8)))) || ((a15 <= 7 && a24 <= 1) && 80 < a12)) || (((a15 <= 7 && a24 <= 1) && a15 <= 8) && 10 <= a21)) || (a24 <= 1 && a15 <= 6)) || (((8 <= a21 && 9 <= a15) && a21 <= 8) && a12 <= 76) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((((((((((((((a24 <= 1 && 80 < a12) && a12 <= 73282) && a21 <= 8) || ((((a15 <= 7 && 0 < a12 + 43) && a24 <= 1) && a12 <= 11) && a21 <= 6)) || (((a24 <= 1 && 8 <= a21) && a12 + 42 <= 0) && a21 <= 8)) || ((80 < a12 && 9 <= a15) && a12 <= 599999)) || ((((9 <= a21 && a24 <= 1) && a15 <= 8) && a21 <= 9) && a12 <= 76)) || ((a12 <= 11 && 9 <= a15) && 10 <= a21)) || ((((7 <= a21 && a21 <= 7) && a15 <= 7) && a24 <= 1) && a15 <= 8)) || (((a24 <= 1 && a12 <= 11) && a15 <= 8) && 10 <= a21)) || (((((7 <= a21 && a21 <= 7) && 0 < a12 + 43) && a24 <= 1) && a12 <= 11) && a15 <= 8)) || ((a12 + 49 <= 0 && a24 == 1) && a15 <= 8)) || ((((8 <= a15 && a24 <= 1) && 8 <= a21) && a21 <= 8) && a12 <= 76)) || ((a12 + 9352 <= 0 && a21 <= 6) && a15 <= 6)) || (a24 <= 1 && (((80 < a12 && a15 <= 8) && 10 <= a21) || ((a21 <= 7 && 80 < a12) && a15 <= 8)))) || ((a15 <= 7 && a24 <= 1) && 80 < a12)) || (((a15 <= 7 && a24 <= 1) && a15 <= 8) && 10 <= a21)) || (a24 <= 1 && a15 <= 6)) || (((8 <= a21 && 9 <= a15) && a21 <= 8) && a12 <= 76) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 246 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 66.3s, OverallIterations: 25, TraceHistogramMax: 18, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3097 SDtfs, 2955 SDslu, 138 SDs, 0 SdLazy, 12501 SolverSat, 1249 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7947 GetRequests, 7883 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4632occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 25 MinimizatonAttempts, 5874 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 69 NumberOfFragments, 483 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5496 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1856 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 28537 NumberOfCodeBlocks, 28537 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 28502 ConstructedInterpolants, 1 QuantifiedInterpolants, 68863272 SizeOfPredicates, 4 NumberOfNonLiveVariables, 10021 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 35 InterpolantComputations, 24 PerfectInterpolantSequences, 108375/110793 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...