./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/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 601109ddd57cf630523568b284ec5251e7a82dbd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:42:05,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:42:05,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:42:05,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:42:05,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:42:05,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:42:05,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:42:05,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:42:05,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:42:05,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:42:05,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:42:05,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:42:05,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:42:05,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:42:05,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:42:05,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:42:05,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:42:05,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:42:05,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:42:05,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:42:05,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:42:05,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:42:05,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:42:05,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:42:05,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:42:05,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:42:05,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:42:05,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:42:05,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:42:05,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:42:05,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:42:05,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:42:05,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:42:05,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:42:05,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:42:05,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:42:05,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:42:05,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:42:05,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:42:05,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:42:05,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:42:05,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:42:05,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:42:05,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:42:05,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:42:05,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:42:05,690 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:42:05,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:42:05,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:42:05,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:42:05,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:42:05,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:42:05,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:42:05,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:42:05,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:42:05,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:42:05,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:42:05,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:42:05,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:42:05,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:42:05,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:42:05,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:42:05,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:42:05,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:42:05,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:42:05,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:42:05,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:42:05,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:42:05,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:42:05,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:42:05,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:42:05,706 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_9dd0b52c-c9ab-4683-92b9-5035b0438142/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 601109ddd57cf630523568b284ec5251e7a82dbd [2020-12-01 15:42:06,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:42:06,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:42:06,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:42:06,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:42:06,128 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:42:06,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2020-12-01 15:42:06,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/data/c78cea1b8/793a32603c24453fbeb26597d0b53af2/FLAG0484683bd [2020-12-01 15:42:07,039 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:42:07,039 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2020-12-01 15:42:07,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/data/c78cea1b8/793a32603c24453fbeb26597d0b53af2/FLAG0484683bd [2020-12-01 15:42:07,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/data/c78cea1b8/793a32603c24453fbeb26597d0b53af2 [2020-12-01 15:42:07,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:42:07,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:42:07,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:42:07,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:42:07,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:42:07,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:07,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5747afd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07, skipping insertion in model container [2020-12-01 15:42:07,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:07,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:42:07,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:42:07,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:42:07,727 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:42:07,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:42:07,879 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:42:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07 WrapperNode [2020-12-01 15:42:07,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:42:07,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:42:07,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:42:07,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:42:07,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:07,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:08,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:42:08,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:42:08,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:42:08,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:42:08,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:08,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:08,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:08,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:08,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:08,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:08,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... [2020-12-01 15:42:08,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:42:08,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:42:08,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:42:08,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:42:08,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/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 [2020-12-01 15:42:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:42:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:42:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:42:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:42:09,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:42:09,650 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 15:42:09,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:42:09 BoogieIcfgContainer [2020-12-01 15:42:09,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:42:09,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:42:09,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:42:09,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:42:09,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:42:07" (1/3) ... [2020-12-01 15:42:09,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182cdcf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:42:09, skipping insertion in model container [2020-12-01 15:42:09,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:42:07" (2/3) ... [2020-12-01 15:42:09,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182cdcf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:42:09, skipping insertion in model container [2020-12-01 15:42:09,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:42:09" (3/3) ... [2020-12-01 15:42:09,679 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label40.c [2020-12-01 15:42:09,698 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:42:09,723 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:42:09,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:42:09,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:42:09,763 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:42:09,764 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:42:09,764 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:42:09,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:42:09,764 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:42:09,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:42:09,764 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:42:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-12-01 15:42:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 15:42:09,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:09,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:09,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:09,800 INFO L82 PathProgramCache]: Analyzing trace with hash 304749070, now seen corresponding path program 1 times [2020-12-01 15:42:09,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:09,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316060917] [2020-12-01 15:42:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:42:10,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316060917] [2020-12-01 15:42:10,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:42:10,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:42:10,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746290390] [2020-12-01 15:42:10,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:10,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:10,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:10,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:42:10,310 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-12-01 15:42:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:11,372 INFO L93 Difference]: Finished difference Result 529 states and 916 transitions. [2020-12-01 15:42:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:11,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-01 15:42:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:11,413 INFO L225 Difference]: With dead ends: 529 [2020-12-01 15:42:11,416 INFO L226 Difference]: Without dead ends: 266 [2020-12-01 15:42:11,426 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 [2020-12-01 15:42:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-01 15:42:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-01 15:42:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-01 15:42:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2020-12-01 15:42:11,488 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 87 [2020-12-01 15:42:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:11,489 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2020-12-01 15:42:11,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2020-12-01 15:42:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-01 15:42:11,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:11,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:11,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:42:11,495 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1973927540, now seen corresponding path program 1 times [2020-12-01 15:42:11,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:11,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896555080] [2020-12-01 15:42:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:42:11,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896555080] [2020-12-01 15:42:11,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:42:11,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:42:11,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816532376] [2020-12-01 15:42:11,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:11,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:11,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:11,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:42:11,632 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand 3 states. [2020-12-01 15:42:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:12,280 INFO L93 Difference]: Finished difference Result 794 states and 1136 transitions. [2020-12-01 15:42:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:12,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-01 15:42:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:12,287 INFO L225 Difference]: With dead ends: 794 [2020-12-01 15:42:12,287 INFO L226 Difference]: Without dead ends: 530 [2020-12-01 15:42:12,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:42:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-12-01 15:42:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2020-12-01 15:42:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-12-01 15:42:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 721 transitions. [2020-12-01 15:42:12,362 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 721 transitions. Word has length 92 [2020-12-01 15:42:12,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:12,364 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 721 transitions. [2020-12-01 15:42:12,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 721 transitions. [2020-12-01 15:42:12,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-01 15:42:12,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:12,380 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:12,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:42:12,381 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1082765250, now seen corresponding path program 1 times [2020-12-01 15:42:12,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:12,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176018060] [2020-12-01 15:42:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:42:12,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176018060] [2020-12-01 15:42:12,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:42:12,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:42:12,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124332412] [2020-12-01 15:42:12,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:12,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:12,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:12,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:42:12,463 INFO L87 Difference]: Start difference. First operand 528 states and 721 transitions. Second operand 3 states. [2020-12-01 15:42:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:13,077 INFO L93 Difference]: Finished difference Result 1578 states and 2158 transitions. [2020-12-01 15:42:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:13,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-01 15:42:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:13,085 INFO L225 Difference]: With dead ends: 1578 [2020-12-01 15:42:13,085 INFO L226 Difference]: Without dead ends: 1052 [2020-12-01 15:42:13,088 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 [2020-12-01 15:42:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-12-01 15:42:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-12-01 15:42:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-01 15:42:13,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1367 transitions. [2020-12-01 15:42:13,143 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1367 transitions. Word has length 96 [2020-12-01 15:42:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:13,143 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1367 transitions. [2020-12-01 15:42:13,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1367 transitions. [2020-12-01 15:42:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-01 15:42:13,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:13,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:13,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:42:13,153 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:13,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:13,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1253646839, now seen corresponding path program 1 times [2020-12-01 15:42:13,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:13,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401309492] [2020-12-01 15:42:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:42:13,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401309492] [2020-12-01 15:42:13,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:42:13,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:42:13,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804063531] [2020-12-01 15:42:13,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:42:13,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:13,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:42:13,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:42:13,295 INFO L87 Difference]: Start difference. First operand 1052 states and 1367 transitions. Second operand 4 states. [2020-12-01 15:42:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:14,354 INFO L93 Difference]: Finished difference Result 2626 states and 3388 transitions. [2020-12-01 15:42:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:42:14,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-12-01 15:42:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:14,365 INFO L225 Difference]: With dead ends: 2626 [2020-12-01 15:42:14,365 INFO L226 Difference]: Without dead ends: 1576 [2020-12-01 15:42:14,367 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 [2020-12-01 15:42:14,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-12-01 15:42:14,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1314. [2020-12-01 15:42:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-12-01 15:42:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1659 transitions. [2020-12-01 15:42:14,412 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1659 transitions. Word has length 99 [2020-12-01 15:42:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:14,413 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1659 transitions. [2020-12-01 15:42:14,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:42:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1659 transitions. [2020-12-01 15:42:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-01 15:42:14,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:14,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:14,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:42:14,419 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash 810714872, now seen corresponding path program 1 times [2020-12-01 15:42:14,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:14,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807713919] [2020-12-01 15:42:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:42:14,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807713919] [2020-12-01 15:42:14,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:42:14,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:42:14,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816313359] [2020-12-01 15:42:14,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:14,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:14,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:14,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:42:14,499 INFO L87 Difference]: Start difference. First operand 1314 states and 1659 transitions. Second operand 3 states. [2020-12-01 15:42:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:15,142 INFO L93 Difference]: Finished difference Result 3543 states and 4513 transitions. [2020-12-01 15:42:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:15,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-01 15:42:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:15,156 INFO L225 Difference]: With dead ends: 3543 [2020-12-01 15:42:15,157 INFO L226 Difference]: Without dead ends: 2231 [2020-12-01 15:42:15,159 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 [2020-12-01 15:42:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-12-01 15:42:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2100. [2020-12-01 15:42:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-12-01 15:42:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2679 transitions. [2020-12-01 15:42:15,219 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2679 transitions. Word has length 100 [2020-12-01 15:42:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:15,220 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2679 transitions. [2020-12-01 15:42:15,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2679 transitions. [2020-12-01 15:42:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-01 15:42:15,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:15,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:15,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:42:15,224 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:15,224 INFO L82 PathProgramCache]: Analyzing trace with hash -785165075, now seen corresponding path program 1 times [2020-12-01 15:42:15,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:15,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181559039] [2020-12-01 15:42:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:42:15,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181559039] [2020-12-01 15:42:15,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:42:15,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:42:15,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420856956] [2020-12-01 15:42:15,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:15,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:15,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:15,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:42:15,319 INFO L87 Difference]: Start difference. First operand 2100 states and 2679 transitions. Second operand 3 states. [2020-12-01 15:42:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:15,887 INFO L93 Difference]: Finished difference Result 4460 states and 5648 transitions. [2020-12-01 15:42:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:15,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-01 15:42:15,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:15,902 INFO L225 Difference]: With dead ends: 4460 [2020-12-01 15:42:15,902 INFO L226 Difference]: Without dead ends: 2362 [2020-12-01 15:42:15,908 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 [2020-12-01 15:42:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-12-01 15:42:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2231. [2020-12-01 15:42:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-12-01 15:42:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2798 transitions. [2020-12-01 15:42:15,972 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2798 transitions. Word has length 102 [2020-12-01 15:42:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:15,976 INFO L481 AbstractCegarLoop]: Abstraction has 2231 states and 2798 transitions. [2020-12-01 15:42:15,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2798 transitions. [2020-12-01 15:42:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-01 15:42:15,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:15,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:15,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:42:15,981 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:15,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:15,982 INFO L82 PathProgramCache]: Analyzing trace with hash -902364545, now seen corresponding path program 1 times [2020-12-01 15:42:15,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:15,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100253538] [2020-12-01 15:42:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 15:42:16,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100253538] [2020-12-01 15:42:16,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:42:16,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:42:16,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784303074] [2020-12-01 15:42:16,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:16,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:16,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:16,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:42:16,061 INFO L87 Difference]: Start difference. First operand 2231 states and 2798 transitions. Second operand 3 states. [2020-12-01 15:42:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:16,656 INFO L93 Difference]: Finished difference Result 4853 states and 6078 transitions. [2020-12-01 15:42:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:16,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-01 15:42:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:16,671 INFO L225 Difference]: With dead ends: 4853 [2020-12-01 15:42:16,671 INFO L226 Difference]: Without dead ends: 2493 [2020-12-01 15:42:16,675 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 [2020-12-01 15:42:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-12-01 15:42:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2020-12-01 15:42:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-12-01 15:42:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2880 transitions. [2020-12-01 15:42:16,744 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2880 transitions. Word has length 103 [2020-12-01 15:42:16,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:16,746 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2880 transitions. [2020-12-01 15:42:16,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2880 transitions. [2020-12-01 15:42:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-01 15:42:16,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:16,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:16,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:42:16,751 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash 752228391, now seen corresponding path program 1 times [2020-12-01 15:42:16,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:16,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595644733] [2020-12-01 15:42:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:42:16,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595644733] [2020-12-01 15:42:16,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583907824] [2020-12-01 15:42:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/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 [2020-12-01 15:42:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:16,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:42:17,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:42:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-01 15:42:17,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:42:17,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-12-01 15:42:17,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248251831] [2020-12-01 15:42:17,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:17,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:17,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:17,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:42:17,272 INFO L87 Difference]: Start difference. First operand 2493 states and 2880 transitions. Second operand 3 states. [2020-12-01 15:42:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:17,958 INFO L93 Difference]: Finished difference Result 5770 states and 6647 transitions. [2020-12-01 15:42:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:17,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-01 15:42:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:17,994 INFO L225 Difference]: With dead ends: 5770 [2020-12-01 15:42:17,994 INFO L226 Difference]: Without dead ends: 3279 [2020-12-01 15:42:17,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:42:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2020-12-01 15:42:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2493. [2020-12-01 15:42:18,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-12-01 15:42:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2844 transitions. [2020-12-01 15:42:18,092 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2844 transitions. Word has length 106 [2020-12-01 15:42:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:18,093 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2844 transitions. [2020-12-01 15:42:18,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2844 transitions. [2020-12-01 15:42:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-01 15:42:18,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:18,099 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:18,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-01 15:42:18,327 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash -670996178, now seen corresponding path program 1 times [2020-12-01 15:42:18,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:18,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928217981] [2020-12-01 15:42:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-01 15:42:18,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928217981] [2020-12-01 15:42:18,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:42:18,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:42:18,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885016657] [2020-12-01 15:42:18,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:42:18,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:18,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:42:18,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:42:18,417 INFO L87 Difference]: Start difference. First operand 2493 states and 2844 transitions. Second operand 4 states. [2020-12-01 15:42:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:19,141 INFO L93 Difference]: Finished difference Result 4984 states and 5686 transitions. [2020-12-01 15:42:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:42:19,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-12-01 15:42:19,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:19,156 INFO L225 Difference]: With dead ends: 4984 [2020-12-01 15:42:19,156 INFO L226 Difference]: Without dead ends: 2493 [2020-12-01 15:42:19,159 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 [2020-12-01 15:42:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-12-01 15:42:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2020-12-01 15:42:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-12-01 15:42:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2814 transitions. [2020-12-01 15:42:19,223 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2814 transitions. Word has length 146 [2020-12-01 15:42:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:19,223 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2814 transitions. [2020-12-01 15:42:19,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:42:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2814 transitions. [2020-12-01 15:42:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-01 15:42:19,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:19,232 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:19,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:42:19,233 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:19,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1859038104, now seen corresponding path program 1 times [2020-12-01 15:42:19,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:19,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306102575] [2020-12-01 15:42:19,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-12-01 15:42:19,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306102575] [2020-12-01 15:42:19,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789283969] [2020-12-01 15:42:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/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 [2020-12-01 15:42:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:19,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:42:19,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:42:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-01 15:42:19,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:42:19,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-12-01 15:42:19,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462637011] [2020-12-01 15:42:19,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:19,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:19,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:42:19,857 INFO L87 Difference]: Start difference. First operand 2493 states and 2814 transitions. Second operand 3 states. [2020-12-01 15:42:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:20,351 INFO L93 Difference]: Finished difference Result 5508 states and 6231 transitions. [2020-12-01 15:42:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:20,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-12-01 15:42:20,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:20,367 INFO L225 Difference]: With dead ends: 5508 [2020-12-01 15:42:20,368 INFO L226 Difference]: Without dead ends: 3017 [2020-12-01 15:42:20,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:42:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-12-01 15:42:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2755. [2020-12-01 15:42:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2020-12-01 15:42:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3106 transitions. [2020-12-01 15:42:20,430 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3106 transitions. Word has length 175 [2020-12-01 15:42:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:20,431 INFO L481 AbstractCegarLoop]: Abstraction has 2755 states and 3106 transitions. [2020-12-01 15:42:20,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3106 transitions. [2020-12-01 15:42:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-12-01 15:42:20,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:20,438 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-01 15:42:20,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 15:42:20,663 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:20,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:20,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1305049907, now seen corresponding path program 1 times [2020-12-01 15:42:20,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:20,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913681705] [2020-12-01 15:42:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 86 proven. 3 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-12-01 15:42:20,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913681705] [2020-12-01 15:42:20,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514365649] [2020-12-01 15:42:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/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 [2020-12-01 15:42:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:20,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:42:20,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:42:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-01 15:42:21,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:42:21,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-12-01 15:42:21,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598361102] [2020-12-01 15:42:21,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:21,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:21,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:21,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:42:21,212 INFO L87 Difference]: Start difference. First operand 2755 states and 3106 transitions. Second operand 3 states. [2020-12-01 15:42:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:21,702 INFO L93 Difference]: Finished difference Result 6032 states and 6814 transitions. [2020-12-01 15:42:21,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:21,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-12-01 15:42:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:21,724 INFO L225 Difference]: With dead ends: 6032 [2020-12-01 15:42:21,725 INFO L226 Difference]: Without dead ends: 3279 [2020-12-01 15:42:21,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:42:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2020-12-01 15:42:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2755. [2020-12-01 15:42:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2020-12-01 15:42:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3106 transitions. [2020-12-01 15:42:21,792 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3106 transitions. Word has length 208 [2020-12-01 15:42:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:21,792 INFO L481 AbstractCegarLoop]: Abstraction has 2755 states and 3106 transitions. [2020-12-01 15:42:21,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3106 transitions. [2020-12-01 15:42:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-12-01 15:42:21,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:42:21,800 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:42:22,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-01 15:42:22,015 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:42:22,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:42:22,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2044006231, now seen corresponding path program 1 times [2020-12-01 15:42:22,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:42:22,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656518902] [2020-12-01 15:42:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:42:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 119 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-12-01 15:42:22,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656518902] [2020-12-01 15:42:22,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482451819] [2020-12-01 15:42:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/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 [2020-12-01 15:42:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:42:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:42:22,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:42:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 15:42:22,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:42:22,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-12-01 15:42:22,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451020483] [2020-12-01 15:42:22,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:42:22,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:42:22,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:42:22,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:42:22,593 INFO L87 Difference]: Start difference. First operand 2755 states and 3106 transitions. Second operand 3 states. [2020-12-01 15:42:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:42:23,133 INFO L93 Difference]: Finished difference Result 5113 states and 5740 transitions. [2020-12-01 15:42:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:42:23,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-12-01 15:42:23,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:42:23,134 INFO L225 Difference]: With dead ends: 5113 [2020-12-01 15:42:23,134 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:42:23,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:42:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:42:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:42:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:42:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:42:23,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 220 [2020-12-01 15:42:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:42:23,141 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:42:23,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:42:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:42:23,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:42:23,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:42:23,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:42:23,631 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-01 15:42:23,814 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-01 15:42:23,817 INFO L262 CegarLoopResult]: For program point L564(line 564) no Hoare annotation was computed. [2020-12-01 15:42:23,817 INFO L262 CegarLoopResult]: For program point L531(line 531) no Hoare annotation was computed. [2020-12-01 15:42:23,818 INFO L262 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2020-12-01 15:42:23,818 INFO L262 CegarLoopResult]: For program point L465(line 465) no Hoare annotation was computed. [2020-12-01 15:42:23,818 INFO L262 CegarLoopResult]: For program point L432(line 432) no Hoare annotation was computed. [2020-12-01 15:42:23,818 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-01 15:42:23,818 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-01 15:42:23,818 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-01 15:42:23,818 INFO L262 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,819 INFO L262 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,819 INFO L262 CegarLoopResult]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,819 INFO L262 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,819 INFO L262 CegarLoopResult]: For program point L401(lines 401 403) no Hoare annotation was computed. [2020-12-01 15:42:23,819 INFO L262 CegarLoopResult]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,820 INFO L262 CegarLoopResult]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,821 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-01 15:42:23,821 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-01 15:42:23,821 INFO L262 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-12-01 15:42:23,821 INFO L262 CegarLoopResult]: For program point L534(line 534) no Hoare annotation was computed. [2020-12-01 15:42:23,821 INFO L262 CegarLoopResult]: For program point L501(line 501) no Hoare annotation was computed. [2020-12-01 15:42:23,821 INFO L262 CegarLoopResult]: For program point L468(line 468) no Hoare annotation was computed. [2020-12-01 15:42:23,822 INFO L262 CegarLoopResult]: For program point L435(line 435) no Hoare annotation was computed. [2020-12-01 15:42:23,822 INFO L262 CegarLoopResult]: For program point L402(line 402) no Hoare annotation was computed. [2020-12-01 15:42:23,822 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-01 15:42:23,822 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-01 15:42:23,822 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-01 15:42:23,824 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-01 15:42:23,824 INFO L262 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,824 INFO L262 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,825 INFO L262 CegarLoopResult]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,825 INFO L262 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,825 INFO L262 CegarLoopResult]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,825 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-01 15:42:23,825 INFO L262 CegarLoopResult]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,825 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-01 15:42:23,825 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-01 15:42:23,825 INFO L262 CegarLoopResult]: For program point L570(line 570) no Hoare annotation was computed. [2020-12-01 15:42:23,826 INFO L262 CegarLoopResult]: For program point L537(line 537) no Hoare annotation was computed. [2020-12-01 15:42:23,826 INFO L262 CegarLoopResult]: For program point L504(line 504) no Hoare annotation was computed. [2020-12-01 15:42:23,826 INFO L262 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2020-12-01 15:42:23,826 INFO L262 CegarLoopResult]: For program point L438(line 438) no Hoare annotation was computed. [2020-12-01 15:42:23,827 INFO L262 CegarLoopResult]: For program point L405(line 405) no Hoare annotation was computed. [2020-12-01 15:42:23,827 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-01 15:42:23,827 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-01 15:42:23,827 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-01 15:42:23,828 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-01 15:42:23,828 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-01 15:42:23,828 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-01 15:42:23,828 INFO L262 CegarLoopResult]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,828 INFO L262 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,828 INFO L262 CegarLoopResult]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,828 INFO L262 CegarLoopResult]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,828 INFO L262 CegarLoopResult]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,829 INFO L262 CegarLoopResult]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,829 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-01 15:42:23,829 INFO L262 CegarLoopResult]: For program point L573(line 573) no Hoare annotation was computed. [2020-12-01 15:42:23,829 INFO L262 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2020-12-01 15:42:23,829 INFO L262 CegarLoopResult]: For program point L507(line 507) no Hoare annotation was computed. [2020-12-01 15:42:23,829 INFO L262 CegarLoopResult]: For program point L474(line 474) no Hoare annotation was computed. [2020-12-01 15:42:23,829 INFO L262 CegarLoopResult]: For program point L441(line 441) no Hoare annotation was computed. [2020-12-01 15:42:23,829 INFO L262 CegarLoopResult]: For program point L408(line 408) no Hoare annotation was computed. [2020-12-01 15:42:23,830 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-01 15:42:23,830 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-01 15:42:23,830 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-01 15:42:23,830 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 15:42:23,830 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-01 15:42:23,830 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-01 15:42:23,830 INFO L262 CegarLoopResult]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,831 INFO L262 CegarLoopResult]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,831 INFO L262 CegarLoopResult]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,831 INFO L262 CegarLoopResult]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,831 INFO L262 CegarLoopResult]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,831 INFO L262 CegarLoopResult]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,832 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-01 15:42:23,832 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-01 15:42:23,832 INFO L262 CegarLoopResult]: For program point L576(line 576) no Hoare annotation was computed. [2020-12-01 15:42:23,832 INFO L262 CegarLoopResult]: For program point L543(line 543) no Hoare annotation was computed. [2020-12-01 15:42:23,832 INFO L262 CegarLoopResult]: For program point L510(line 510) no Hoare annotation was computed. [2020-12-01 15:42:23,832 INFO L262 CegarLoopResult]: For program point L477(line 477) no Hoare annotation was computed. [2020-12-01 15:42:23,832 INFO L262 CegarLoopResult]: For program point L444(line 444) no Hoare annotation was computed. [2020-12-01 15:42:23,832 INFO L262 CegarLoopResult]: For program point L411(line 411) no Hoare annotation was computed. [2020-12-01 15:42:23,833 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-01 15:42:23,833 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-01 15:42:23,833 INFO L262 CegarLoopResult]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,833 INFO L262 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,833 INFO L262 CegarLoopResult]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,833 INFO L262 CegarLoopResult]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,833 INFO L262 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,833 INFO L262 CegarLoopResult]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,834 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-01 15:42:23,835 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-01 15:42:23,835 INFO L262 CegarLoopResult]: For program point L579(line 579) no Hoare annotation was computed. [2020-12-01 15:42:23,835 INFO L262 CegarLoopResult]: For program point L546(line 546) no Hoare annotation was computed. [2020-12-01 15:42:23,835 INFO L262 CegarLoopResult]: For program point L513(line 513) no Hoare annotation was computed. [2020-12-01 15:42:23,835 INFO L262 CegarLoopResult]: For program point L480(line 480) no Hoare annotation was computed. [2020-12-01 15:42:23,835 INFO L262 CegarLoopResult]: For program point L447(line 447) no Hoare annotation was computed. [2020-12-01 15:42:23,835 INFO L262 CegarLoopResult]: For program point L414(line 414) no Hoare annotation was computed. [2020-12-01 15:42:23,835 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-01 15:42:23,836 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-01 15:42:23,836 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-01 15:42:23,836 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-01 15:42:23,836 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-01 15:42:23,836 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-01 15:42:23,836 INFO L262 CegarLoopResult]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2020-12-01 15:42:23,836 INFO L262 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,837 INFO L262 CegarLoopResult]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,837 INFO L262 CegarLoopResult]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,837 INFO L262 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,837 INFO L262 CegarLoopResult]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,837 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:42:23,837 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-01 15:42:23,837 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-01 15:42:23,837 INFO L262 CegarLoopResult]: For program point L582(line 582) no Hoare annotation was computed. [2020-12-01 15:42:23,838 INFO L262 CegarLoopResult]: For program point L549(line 549) no Hoare annotation was computed. [2020-12-01 15:42:23,838 INFO L262 CegarLoopResult]: For program point L516(line 516) no Hoare annotation was computed. [2020-12-01 15:42:23,838 INFO L262 CegarLoopResult]: For program point L483(line 483) no Hoare annotation was computed. [2020-12-01 15:42:23,838 INFO L262 CegarLoopResult]: For program point L450(line 450) no Hoare annotation was computed. [2020-12-01 15:42:23,838 INFO L262 CegarLoopResult]: For program point L417(line 417) no Hoare annotation was computed. [2020-12-01 15:42:23,838 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-01 15:42:23,840 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse1 (not .cse6)) (.cse2 (not .cse4)) (.cse8 (<= ~a16~0 4)) (.cse5 (= ~a7~0 0)) (.cse9 (<= ~a21~0 0)) (.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse7 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse7) (and .cse8 .cse4 .cse6) (and .cse8 .cse9) (and .cse3 .cse0 .cse4 .cse5) (and (not (= ~a7~0 1)) .cse7 .cse6) (and .cse9 .cse4) (and (<= 14 ~a8~0) (or (and .cse3 .cse0 .cse4) (and .cse3 .cse4 .cse7)))))) [2020-12-01 15:42:23,840 INFO L262 CegarLoopResult]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,841 INFO L262 CegarLoopResult]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,841 INFO L262 CegarLoopResult]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,841 INFO L262 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,841 INFO L262 CegarLoopResult]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,841 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-01 15:42:23,841 INFO L262 CegarLoopResult]: For program point L552(line 552) no Hoare annotation was computed. [2020-12-01 15:42:23,841 INFO L262 CegarLoopResult]: For program point L519(line 519) no Hoare annotation was computed. [2020-12-01 15:42:23,841 INFO L262 CegarLoopResult]: For program point L486(line 486) no Hoare annotation was computed. [2020-12-01 15:42:23,842 INFO L262 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2020-12-01 15:42:23,842 INFO L262 CegarLoopResult]: For program point L420(line 420) no Hoare annotation was computed. [2020-12-01 15:42:23,842 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-01 15:42:23,842 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-01 15:42:23,842 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-01 15:42:23,842 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-01 15:42:23,842 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-01 15:42:23,843 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-01 15:42:23,843 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:42:23,843 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-01 15:42:23,843 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-01 15:42:23,843 INFO L262 CegarLoopResult]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,843 INFO L262 CegarLoopResult]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,843 INFO L262 CegarLoopResult]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,843 INFO L262 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,844 INFO L262 CegarLoopResult]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,844 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-01 15:42:23,844 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-01 15:42:23,844 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-01 15:42:23,844 INFO L262 CegarLoopResult]: For program point L555(line 555) no Hoare annotation was computed. [2020-12-01 15:42:23,844 INFO L262 CegarLoopResult]: For program point L522(line 522) no Hoare annotation was computed. [2020-12-01 15:42:23,844 INFO L262 CegarLoopResult]: For program point L489(line 489) no Hoare annotation was computed. [2020-12-01 15:42:23,844 INFO L262 CegarLoopResult]: For program point L456(line 456) no Hoare annotation was computed. [2020-12-01 15:42:23,845 INFO L262 CegarLoopResult]: For program point L423(line 423) no Hoare annotation was computed. [2020-12-01 15:42:23,845 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-01 15:42:23,845 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:42:23,845 INFO L262 CegarLoopResult]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,845 INFO L262 CegarLoopResult]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,845 INFO L262 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,845 INFO L262 CegarLoopResult]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,846 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-01 15:42:23,846 INFO L262 CegarLoopResult]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,846 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-01 15:42:23,846 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-01 15:42:23,846 INFO L262 CegarLoopResult]: For program point L558(line 558) no Hoare annotation was computed. [2020-12-01 15:42:23,846 INFO L262 CegarLoopResult]: For program point L525(line 525) no Hoare annotation was computed. [2020-12-01 15:42:23,846 INFO L262 CegarLoopResult]: For program point L492(line 492) no Hoare annotation was computed. [2020-12-01 15:42:23,846 INFO L262 CegarLoopResult]: For program point L459(line 459) no Hoare annotation was computed. [2020-12-01 15:42:23,847 INFO L262 CegarLoopResult]: For program point L426(line 426) no Hoare annotation was computed. [2020-12-01 15:42:23,847 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-01 15:42:23,847 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-01 15:42:23,847 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-01 15:42:23,847 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-01 15:42:23,847 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-01 15:42:23,847 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-01 15:42:23,847 INFO L262 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,848 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse1 (not .cse6)) (.cse2 (not .cse4)) (.cse8 (<= ~a16~0 4)) (.cse5 (= ~a7~0 0)) (.cse9 (<= ~a21~0 0)) (.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse7 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse7) (and .cse8 .cse4 .cse6) (and .cse8 .cse9) (and .cse3 .cse0 .cse4 .cse5) (and (not (= ~a7~0 1)) .cse7 .cse6) (and .cse9 .cse4) (and (<= 14 ~a8~0) (or (and .cse3 .cse0 .cse4) (and .cse3 .cse4 .cse7)))))) [2020-12-01 15:42:23,848 INFO L262 CegarLoopResult]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,848 INFO L262 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,848 INFO L262 CegarLoopResult]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,848 INFO L262 CegarLoopResult]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,848 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-01 15:42:23,849 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:42:23,849 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 15:42:23,849 INFO L262 CegarLoopResult]: For program point L561(line 561) no Hoare annotation was computed. [2020-12-01 15:42:23,849 INFO L262 CegarLoopResult]: For program point L528(line 528) no Hoare annotation was computed. [2020-12-01 15:42:23,849 INFO L262 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2020-12-01 15:42:23,849 INFO L262 CegarLoopResult]: For program point L462(line 462) no Hoare annotation was computed. [2020-12-01 15:42:23,849 INFO L262 CegarLoopResult]: For program point L429(line 429) no Hoare annotation was computed. [2020-12-01 15:42:23,850 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-01 15:42:23,850 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-01 15:42:23,850 INFO L262 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,850 INFO L262 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,850 INFO L262 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,850 INFO L262 CegarLoopResult]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,850 INFO L262 CegarLoopResult]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2020-12-01 15:42:23,850 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-01 15:42:23,851 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-01 15:42:23,851 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-01 15:42:23,851 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-01 15:42:23,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:42:23 BoogieIcfgContainer [2020-12-01 15:42:23,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:42:23,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:42:23,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:42:23,897 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:42:23,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:42:09" (3/4) ... [2020-12-01 15:42:23,901 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:42:23,932 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-01 15:42:23,934 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:42:23,935 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:42:23,937 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:42:24,099 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9dd0b52c-c9ab-4683-92b9-5035b0438142/bin/uautomizer/witness.graphml [2020-12-01 15:42:24,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:42:24,101 INFO L168 Benchmark]: Toolchain (without parser) took 16870.65 ms. Allocated memory was 94.4 MB in the beginning and 302.0 MB in the end (delta: 207.6 MB). Free memory was 63.7 MB in the beginning and 129.2 MB in the end (delta: -65.5 MB). Peak memory consumption was 142.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:42:24,102 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:42:24,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.05 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 63.4 MB in the beginning and 77.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:42:24,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.41 ms. Allocated memory is still 117.4 MB. Free memory was 77.7 MB in the beginning and 72.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:42:24,103 INFO L168 Benchmark]: Boogie Preprocessor took 74.59 ms. Allocated memory is still 117.4 MB. Free memory was 72.1 MB in the beginning and 67.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:42:24,103 INFO L168 Benchmark]: RCFGBuilder took 1573.14 ms. Allocated memory is still 117.4 MB. Free memory was 67.2 MB in the beginning and 59.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:42:24,104 INFO L168 Benchmark]: TraceAbstraction took 14226.09 ms. Allocated memory was 117.4 MB in the beginning and 302.0 MB in the end (delta: 184.5 MB). Free memory was 59.2 MB in the beginning and 143.9 MB in the end (delta: -84.7 MB). Peak memory consumption was 99.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:42:24,105 INFO L168 Benchmark]: Witness Printer took 203.11 ms. Allocated memory is still 302.0 MB. Free memory was 143.9 MB in the beginning and 129.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:42:24,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 651.05 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 63.4 MB in the beginning and 77.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 135.41 ms. Allocated memory is still 117.4 MB. Free memory was 77.7 MB in the beginning and 72.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.59 ms. Allocated memory is still 117.4 MB. Free memory was 72.1 MB in the beginning and 67.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1573.14 ms. Allocated memory is still 117.4 MB. Free memory was 67.2 MB in the beginning and 59.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14226.09 ms. Allocated memory was 117.4 MB in the beginning and 302.0 MB in the end (delta: 184.5 MB). Free memory was 59.2 MB in the beginning and 143.9 MB in the end (delta: -84.7 MB). Peak memory consumption was 99.6 MB. Max. memory is 16.1 GB. * Witness Printer took 203.11 ms. Allocated memory is still 302.0 MB. Free memory was 143.9 MB in the beginning and 129.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 40]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && !(a17 == 1)) && !(a20 == 1)) || (((a21 == 1 && a20 == 1) && a7 == 0) && a17 == 1)) || ((!(a17 == 1) && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || (a16 <= 4 && a21 <= 0)) || (((a21 == 1 && a16 <= 5) && a20 == 1) && a7 == 0)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || (a21 <= 0 && a20 == 1)) || (14 <= a8 && (((a21 == 1 && a16 <= 5) && a20 == 1) || ((a21 == 1 && a20 == 1) && 15 <= a8))) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && !(a17 == 1)) && !(a20 == 1)) || (((a21 == 1 && a20 == 1) && a7 == 0) && a17 == 1)) || ((!(a17 == 1) && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || (a16 <= 4 && a21 <= 0)) || (((a21 == 1 && a16 <= 5) && a20 == 1) && a7 == 0)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || (a21 <= 0 && a20 == 1)) || (14 <= a8 && (((a21 == 1 && a16 <= 5) && a20 == 1) || ((a21 == 1 && a20 == 1) && 15 <= a8))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.5s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 705 SDtfs, 1797 SDslu, 71 SDs, 0 SdLazy, 4321 SolverSat, 736 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 736 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2755occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 2098 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 223 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1330 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2243 NumberOfCodeBlocks, 2243 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2227 ConstructedInterpolants, 0 QuantifiedInterpolants, 647791 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1538 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 1607/1619 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...