./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gr2006.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/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 e5710d6b4e91b9251f64aef4f8b0515c8f0428d2 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:54:36,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:54:36,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:54:36,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:54:36,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:54:36,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:54:36,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:54:36,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:54:36,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:54:36,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:54:36,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:54:36,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:54:36,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:54:36,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:54:36,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:54:36,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:54:36,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:54:36,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:54:36,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:54:36,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:54:36,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:54:36,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:54:36,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:54:36,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:54:36,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:54:36,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:54:36,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:54:36,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:54:36,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:54:36,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:54:36,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:54:36,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:54:36,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:54:36,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:54:36,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:54:36,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:54:36,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:54:36,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:54:36,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:54:36,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:54:36,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:54:36,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:54:36,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:54:36,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:54:36,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:54:36,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:54:36,918 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:54:36,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:54:36,918 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:54:36,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:54:36,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:54:36,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:54:36,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:54:36,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:54:36,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:54:36,921 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:54:36,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:54:36,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:54:36,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:54:36,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:54:36,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:54:36,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:54:36,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:54:36,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:54:36,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:54:36,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:54:36,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:54:36,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:54:36,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:54:36,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:54:36,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:54:36,926 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_8cf45938-1d2a-4d48-a643-64a54e7c17a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5710d6b4e91b9251f64aef4f8b0515c8f0428d2 [2020-11-29 19:54:37,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:54:37,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:54:37,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:54:37,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:54:37,317 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:54:37,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gr2006.i [2020-11-29 19:54:37,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/data/d4e8ac1e4/7d60c6cee8ef4f54860b8948cf9f1048/FLAGb22099319 [2020-11-29 19:54:37,941 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:54:37,941 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/sv-benchmarks/c/loop-lit/gr2006.i [2020-11-29 19:54:37,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/data/d4e8ac1e4/7d60c6cee8ef4f54860b8948cf9f1048/FLAGb22099319 [2020-11-29 19:54:38,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/data/d4e8ac1e4/7d60c6cee8ef4f54860b8948cf9f1048 [2020-11-29 19:54:38,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:54:38,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:54:38,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:54:38,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:54:38,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:54:38,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493fa947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38, skipping insertion in model container [2020-11-29 19:54:38,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:54:38,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:54:38,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:54:38,629 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:54:38,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:54:38,683 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:54:38,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38 WrapperNode [2020-11-29 19:54:38,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:54:38,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:54:38,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:54:38,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:54:38,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:54:38,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:54:38,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:54:38,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:54:38,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... [2020-11-29 19:54:38,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:54:38,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:54:38,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:54:38,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:54:38,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:54:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:54:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:54:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:54:38,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:54:39,118 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:54:39,118 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:54:39,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:54:39 BoogieIcfgContainer [2020-11-29 19:54:39,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:54:39,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:54:39,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:54:39,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:54:39,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:54:38" (1/3) ... [2020-11-29 19:54:39,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d251683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:54:39, skipping insertion in model container [2020-11-29 19:54:39,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:38" (2/3) ... [2020-11-29 19:54:39,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d251683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:54:39, skipping insertion in model container [2020-11-29 19:54:39,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:54:39" (3/3) ... [2020-11-29 19:54:39,146 INFO L111 eAbstractionObserver]: Analyzing ICFG gr2006.i [2020-11-29 19:54:39,178 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:54:39,185 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:54:39,202 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:54:39,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:54:39,264 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:54:39,264 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:54:39,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:54:39,264 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:54:39,265 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:54:39,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:54:39,265 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:54:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 19:54:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:54:39,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:39,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:39,308 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash 679558952, now seen corresponding path program 1 times [2020-11-29 19:54:39,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:39,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810505238] [2020-11-29 19:54:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:39,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810505238] [2020-11-29 19:54:39,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:54:39,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:54:39,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78396811] [2020-11-29 19:54:39,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:54:39,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:39,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:54:39,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:54:39,489 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-29 19:54:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:39,504 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-11-29 19:54:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:54:39,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 19:54:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:39,515 INFO L225 Difference]: With dead ends: 26 [2020-11-29 19:54:39,516 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 19:54:39,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:54:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 19:54:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 19:54:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 19:54:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-29 19:54:39,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-11-29 19:54:39,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:39,558 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-29 19:54:39,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:54:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-29 19:54:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:54:39,559 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:39,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:39,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:54:39,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:39,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:39,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1508169327, now seen corresponding path program 1 times [2020-11-29 19:54:39,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:39,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196426908] [2020-11-29 19:54:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:39,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196426908] [2020-11-29 19:54:39,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:54:39,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:54:39,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455150473] [2020-11-29 19:54:39,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:54:39,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:39,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:54:39,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:54:39,652 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2020-11-29 19:54:39,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:39,706 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-29 19:54:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:54:39,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 19:54:39,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:39,708 INFO L225 Difference]: With dead ends: 29 [2020-11-29 19:54:39,709 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 19:54:39,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:54:39,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 19:54:39,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2020-11-29 19:54:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 19:54:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-29 19:54:39,715 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-11-29 19:54:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:39,715 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-29 19:54:39,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:54:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-29 19:54:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:54:39,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:39,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:39,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:54:39,717 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:39,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1011790607, now seen corresponding path program 1 times [2020-11-29 19:54:39,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:39,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13741538] [2020-11-29 19:54:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:39,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13741538] [2020-11-29 19:54:39,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:54:39,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:54:39,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530940845] [2020-11-29 19:54:39,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:54:39,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:39,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:54:39,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:54:39,834 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2020-11-29 19:54:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:39,900 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-11-29 19:54:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:54:39,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:54:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:39,902 INFO L225 Difference]: With dead ends: 22 [2020-11-29 19:54:39,902 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 19:54:39,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:54:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 19:54:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 19:54:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 19:54:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-29 19:54:39,908 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-11-29 19:54:39,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:39,908 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-29 19:54:39,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:54:39,909 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-29 19:54:39,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:54:39,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:39,910 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:39,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:54:39,910 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1504187710, now seen corresponding path program 1 times [2020-11-29 19:54:39,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:39,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312878854] [2020-11-29 19:54:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:39,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312878854] [2020-11-29 19:54:39,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129971535] [2020-11-29 19:54:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:40,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:54:40,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:40,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:40,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-29 19:54:40,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146835871] [2020-11-29 19:54:40,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:54:40,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:40,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:54:40,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:54:40,103 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-11-29 19:54:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:40,143 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-11-29 19:54:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:54:40,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 19:54:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:40,146 INFO L225 Difference]: With dead ends: 29 [2020-11-29 19:54:40,147 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 19:54:40,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:54:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 19:54:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-29 19:54:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 19:54:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-29 19:54:40,152 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-11-29 19:54:40,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:40,153 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-29 19:54:40,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:54:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-29 19:54:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:54:40,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:40,154 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:40,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:40,367 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:40,368 INFO L82 PathProgramCache]: Analyzing trace with hash -708972943, now seen corresponding path program 2 times [2020-11-29 19:54:40,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:40,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42322135] [2020-11-29 19:54:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:40,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42322135] [2020-11-29 19:54:40,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246376953] [2020-11-29 19:54:40,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:40,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:54:40,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:40,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:54:40,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:54:40,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:40,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-29 19:54:40,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546736229] [2020-11-29 19:54:40,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:54:40,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:40,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:54:40,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:54:40,600 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2020-11-29 19:54:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:40,809 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-11-29 19:54:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:54:40,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-29 19:54:40,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:40,812 INFO L225 Difference]: With dead ends: 39 [2020-11-29 19:54:40,812 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 19:54:40,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:54:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 19:54:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-11-29 19:54:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 19:54:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-11-29 19:54:40,825 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2020-11-29 19:54:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:40,826 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-11-29 19:54:40,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:54:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-11-29 19:54:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:54:40,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:40,829 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:41,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:41,055 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:41,056 INFO L82 PathProgramCache]: Analyzing trace with hash -816166210, now seen corresponding path program 3 times [2020-11-29 19:54:41,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:41,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262512912] [2020-11-29 19:54:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 19:54:41,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262512912] [2020-11-29 19:54:41,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940434309] [2020-11-29 19:54:41,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:41,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-29 19:54:41,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:41,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:54:41,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 19:54:41,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:41,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-11-29 19:54:41,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168326409] [2020-11-29 19:54:41,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:54:41,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:54:41,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:54:41,343 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 10 states. [2020-11-29 19:54:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:41,537 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-11-29 19:54:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 19:54:41,538 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-11-29 19:54:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:41,539 INFO L225 Difference]: With dead ends: 56 [2020-11-29 19:54:41,539 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 19:54:41,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:54:41,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 19:54:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2020-11-29 19:54:41,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 19:54:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-29 19:54:41,548 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 25 [2020-11-29 19:54:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:41,548 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-29 19:54:41,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:54:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-29 19:54:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:54:41,549 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:41,550 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:41,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:41,761 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:41,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:41,761 INFO L82 PathProgramCache]: Analyzing trace with hash -132323940, now seen corresponding path program 4 times [2020-11-29 19:54:41,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:41,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535232819] [2020-11-29 19:54:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 46 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 19:54:41,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535232819] [2020-11-29 19:54:41,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237562660] [2020-11-29 19:54:41,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:41,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:54:41,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:41,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:54:41,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 46 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 19:54:41,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:41,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-29 19:54:41,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233753311] [2020-11-29 19:54:41,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:54:41,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:41,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:54:41,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:54:41,956 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-11-29 19:54:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:42,012 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-11-29 19:54:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:54:42,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-11-29 19:54:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:42,015 INFO L225 Difference]: With dead ends: 55 [2020-11-29 19:54:42,015 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 19:54:42,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:54:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 19:54:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-29 19:54:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:54:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 19:54:42,020 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 31 [2020-11-29 19:54:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:42,021 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 19:54:42,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:54:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 19:54:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 19:54:42,022 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:42,022 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:42,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:42,247 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:42,248 INFO L82 PathProgramCache]: Analyzing trace with hash -557844465, now seen corresponding path program 5 times [2020-11-29 19:54:42,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:42,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138197872] [2020-11-29 19:54:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 56 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 19:54:42,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138197872] [2020-11-29 19:54:42,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956210179] [2020-11-29 19:54:42,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:42,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-29 19:54:42,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:42,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:54:42,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 56 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 19:54:42,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:42,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-29 19:54:42,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825254153] [2020-11-29 19:54:42,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:54:42,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:42,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:54:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:54:42,471 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-11-29 19:54:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:42,526 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-11-29 19:54:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:54:42,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-11-29 19:54:42,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:42,530 INFO L225 Difference]: With dead ends: 58 [2020-11-29 19:54:42,530 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 19:54:42,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:54:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 19:54:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-11-29 19:54:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:54:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-11-29 19:54:42,544 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2020-11-29 19:54:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:42,544 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-11-29 19:54:42,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:54:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-11-29 19:54:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 19:54:42,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:42,552 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:42,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:42,753 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1503653052, now seen corresponding path program 6 times [2020-11-29 19:54:42,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:42,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809342541] [2020-11-29 19:54:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 66 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 19:54:42,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809342541] [2020-11-29 19:54:42,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226070840] [2020-11-29 19:54:42,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:42,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-29 19:54:42,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:42,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:54:42,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:43,078 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 89 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 19:54:43,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:43,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2020-11-29 19:54:43,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214563277] [2020-11-29 19:54:43,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 19:54:43,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:43,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 19:54:43,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:54:43,081 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 14 states. [2020-11-29 19:54:43,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:43,374 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-11-29 19:54:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 19:54:43,375 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-11-29 19:54:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:43,376 INFO L225 Difference]: With dead ends: 74 [2020-11-29 19:54:43,376 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 19:54:43,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-11-29 19:54:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 19:54:43,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2020-11-29 19:54:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 19:54:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-11-29 19:54:43,386 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 37 [2020-11-29 19:54:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:43,387 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-11-29 19:54:43,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 19:54:43,387 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-11-29 19:54:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 19:54:43,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:43,389 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:43,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:43,607 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:43,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:43,608 INFO L82 PathProgramCache]: Analyzing trace with hash -794960034, now seen corresponding path program 7 times [2020-11-29 19:54:43,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:43,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869201215] [2020-11-29 19:54:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 99 proven. 77 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:43,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869201215] [2020-11-29 19:54:43,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364892844] [2020-11-29 19:54:43,787 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:43,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:54:43,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 99 proven. 77 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:43,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:43,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-29 19:54:43,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651089601] [2020-11-29 19:54:43,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 19:54:43,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:43,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:54:43,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:54:43,914 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 11 states. [2020-11-29 19:54:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:43,981 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-11-29 19:54:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:54:43,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-11-29 19:54:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:43,983 INFO L225 Difference]: With dead ends: 70 [2020-11-29 19:54:43,983 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 19:54:43,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:54:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 19:54:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-11-29 19:54:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 19:54:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-11-29 19:54:43,990 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 43 [2020-11-29 19:54:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:43,991 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-11-29 19:54:43,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 19:54:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-11-29 19:54:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 19:54:43,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:43,993 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:44,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 19:54:44,211 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:44,212 INFO L82 PathProgramCache]: Analyzing trace with hash 907140433, now seen corresponding path program 8 times [2020-11-29 19:54:44,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:44,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17256968] [2020-11-29 19:54:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 112 proven. 100 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:44,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17256968] [2020-11-29 19:54:44,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081070874] [2020-11-29 19:54:44,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:44,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:54:44,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:54:44,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 112 proven. 100 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:44,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:44,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-29 19:54:44,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485156535] [2020-11-29 19:54:44,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:54:44,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:44,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:54:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:54:44,514 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 12 states. [2020-11-29 19:54:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:44,583 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-11-29 19:54:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:54:44,584 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-11-29 19:54:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:44,585 INFO L225 Difference]: With dead ends: 73 [2020-11-29 19:54:44,585 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 19:54:44,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:54:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 19:54:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-11-29 19:54:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 19:54:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-11-29 19:54:44,593 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 46 [2020-11-29 19:54:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:44,593 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-11-29 19:54:44,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:54:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-11-29 19:54:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:54:44,595 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:44,605 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:44,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-29 19:54:44,819 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:44,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1798256254, now seen corresponding path program 9 times [2020-11-29 19:54:44,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:44,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984993375] [2020-11-29 19:54:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 125 proven. 126 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:44,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984993375] [2020-11-29 19:54:44,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324555902] [2020-11-29 19:54:44,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:45,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-11-29 19:54:45,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:45,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 19:54:45,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 13 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:45,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:45,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 17 [2020-11-29 19:54:45,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476864905] [2020-11-29 19:54:45,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 19:54:45,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:45,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 19:54:45,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:54:45,232 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 17 states. [2020-11-29 19:54:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:45,304 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-11-29 19:54:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 19:54:45,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-11-29 19:54:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:45,306 INFO L225 Difference]: With dead ends: 88 [2020-11-29 19:54:45,306 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 19:54:45,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:54:45,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 19:54:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-11-29 19:54:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 19:54:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-11-29 19:54:45,316 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 49 [2020-11-29 19:54:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:45,316 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-11-29 19:54:45,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 19:54:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-11-29 19:54:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 19:54:45,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:45,318 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 14, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:45,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:45,539 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:45,540 INFO L82 PathProgramCache]: Analyzing trace with hash 983294961, now seen corresponding path program 10 times [2020-11-29 19:54:45,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:45,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878669231] [2020-11-29 19:54:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 190 proven. 301 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:45,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878669231] [2020-11-29 19:54:45,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878468044] [2020-11-29 19:54:45,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:45,825 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:54:45,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:45,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 19:54:45,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 190 proven. 301 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:45,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:45,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-29 19:54:45,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749997203] [2020-11-29 19:54:45,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 19:54:45,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:45,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 19:54:45,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:54:45,889 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 18 states. [2020-11-29 19:54:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:45,989 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2020-11-29 19:54:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 19:54:45,990 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 64 [2020-11-29 19:54:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:45,991 INFO L225 Difference]: With dead ends: 91 [2020-11-29 19:54:45,991 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 19:54:45,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:54:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 19:54:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-11-29 19:54:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 19:54:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-11-29 19:54:45,999 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 64 [2020-11-29 19:54:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:46,000 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-11-29 19:54:46,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 19:54:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-11-29 19:54:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-29 19:54:46,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:46,001 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 15, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:46,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:46,212 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1519899682, now seen corresponding path program 11 times [2020-11-29 19:54:46,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:46,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636195913] [2020-11-29 19:54:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 203 proven. 345 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:46,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636195913] [2020-11-29 19:54:46,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110726173] [2020-11-29 19:54:46,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:46,559 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2020-11-29 19:54:46,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:46,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 19:54:46,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 203 proven. 345 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:46,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:46,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-29 19:54:46,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771189796] [2020-11-29 19:54:46,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 19:54:46,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:46,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 19:54:46,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:54:46,624 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 19 states. [2020-11-29 19:54:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:46,717 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-11-29 19:54:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 19:54:46,718 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-11-29 19:54:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:46,719 INFO L225 Difference]: With dead ends: 94 [2020-11-29 19:54:46,719 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 19:54:46,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:54:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 19:54:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-11-29 19:54:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 19:54:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-11-29 19:54:46,727 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 67 [2020-11-29 19:54:46,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:46,727 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-11-29 19:54:46,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 19:54:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-11-29 19:54:46,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-29 19:54:46,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:46,729 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 16, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:46,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 19:54:46,929 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash -674348847, now seen corresponding path program 12 times [2020-11-29 19:54:46,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:46,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785542790] [2020-11-29 19:54:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 216 proven. 392 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 19:54:47,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785542790] [2020-11-29 19:54:47,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944164306] [2020-11-29 19:54:47,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:47,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2020-11-29 19:54:47,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:47,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 19:54:47,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 560 proven. 57 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-29 19:54:47,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:47,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2020-11-29 19:54:47,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077418040] [2020-11-29 19:54:47,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-29 19:54:47,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:47,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-29 19:54:47,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 19:54:47,903 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 36 states. [2020-11-29 19:54:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:48,835 INFO L93 Difference]: Finished difference Result 289 states and 372 transitions. [2020-11-29 19:54:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-29 19:54:48,836 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2020-11-29 19:54:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:48,838 INFO L225 Difference]: With dead ends: 289 [2020-11-29 19:54:48,838 INFO L226 Difference]: Without dead ends: 267 [2020-11-29 19:54:48,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1049, Invalid=3643, Unknown=0, NotChecked=0, Total=4692 [2020-11-29 19:54:48,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-11-29 19:54:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 110. [2020-11-29 19:54:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-29 19:54:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-11-29 19:54:48,856 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 70 [2020-11-29 19:54:48,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:48,857 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-11-29 19:54:48,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-29 19:54:48,857 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-11-29 19:54:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-29 19:54:48,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:48,859 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:49,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 19:54:49,079 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:49,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:49,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1837170370, now seen corresponding path program 13 times [2020-11-29 19:54:49,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:49,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894568489] [2020-11-29 19:54:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 865 proven. 442 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-11-29 19:54:49,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894568489] [2020-11-29 19:54:49,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018926092] [2020-11-29 19:54:49,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:49,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 19:54:49,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 865 proven. 442 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-11-29 19:54:49,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:49,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-29 19:54:49,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424309353] [2020-11-29 19:54:49,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-29 19:54:49,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:49,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-29 19:54:49,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 19:54:49,695 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 21 states. [2020-11-29 19:54:49,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:49,783 INFO L93 Difference]: Finished difference Result 172 states and 207 transitions. [2020-11-29 19:54:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 19:54:49,784 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 109 [2020-11-29 19:54:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:49,785 INFO L225 Difference]: With dead ends: 172 [2020-11-29 19:54:49,785 INFO L226 Difference]: Without dead ends: 114 [2020-11-29 19:54:49,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 19:54:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-29 19:54:49,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-11-29 19:54:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 19:54:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-11-29 19:54:49,800 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 109 [2020-11-29 19:54:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:49,801 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-11-29 19:54:49,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-29 19:54:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-11-29 19:54:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 19:54:49,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:49,804 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:50,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 19:54:50,012 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:50,013 INFO L82 PathProgramCache]: Analyzing trace with hash 522729073, now seen corresponding path program 14 times [2020-11-29 19:54:50,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:50,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391178473] [2020-11-29 19:54:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 914 proven. 495 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-11-29 19:54:50,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391178473] [2020-11-29 19:54:50,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451641422] [2020-11-29 19:54:50,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:50,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:54:50,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:50,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 19:54:50,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 914 proven. 495 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-11-29 19:54:50,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:50,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-29 19:54:50,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683086269] [2020-11-29 19:54:50,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 19:54:50,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:50,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 19:54:50,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:54:50,592 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 22 states. [2020-11-29 19:54:50,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:50,725 INFO L93 Difference]: Finished difference Result 175 states and 210 transitions. [2020-11-29 19:54:50,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 19:54:50,728 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 112 [2020-11-29 19:54:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:50,730 INFO L225 Difference]: With dead ends: 175 [2020-11-29 19:54:50,730 INFO L226 Difference]: Without dead ends: 117 [2020-11-29 19:54:50,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:54:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-29 19:54:50,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-11-29 19:54:50,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-29 19:54:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2020-11-29 19:54:50,749 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 112 [2020-11-29 19:54:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:50,749 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2020-11-29 19:54:50,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 19:54:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2020-11-29 19:54:50,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-29 19:54:50,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:50,752 INFO L422 BasicCegarLoop]: trace histogram [36, 35, 19, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:50,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:50,975 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:50,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash -32632738, now seen corresponding path program 15 times [2020-11-29 19:54:50,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:50,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509848646] [2020-11-29 19:54:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 963 proven. 551 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-11-29 19:54:51,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509848646] [2020-11-29 19:54:51,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629248343] [2020-11-29 19:54:51,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:51,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2020-11-29 19:54:51,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:51,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 19:54:51,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1040 proven. 801 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-29 19:54:52,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:52,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2020-11-29 19:54:52,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285326437] [2020-11-29 19:54:52,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-29 19:54:52,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:52,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-29 19:54:52,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 19:54:52,335 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 42 states. [2020-11-29 19:54:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:53,521 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2020-11-29 19:54:53,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-29 19:54:53,522 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 115 [2020-11-29 19:54:53,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:53,523 INFO L225 Difference]: With dead ends: 334 [2020-11-29 19:54:53,524 INFO L226 Difference]: Without dead ends: 276 [2020-11-29 19:54:53,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1415, Invalid=5065, Unknown=0, NotChecked=0, Total=6480 [2020-11-29 19:54:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-11-29 19:54:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 128. [2020-11-29 19:54:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 19:54:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-11-29 19:54:53,538 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 115 [2020-11-29 19:54:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:53,538 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-11-29 19:54:53,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-29 19:54:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-11-29 19:54:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-29 19:54:53,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:53,540 INFO L422 BasicCegarLoop]: trace histogram [40, 39, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:53,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 19:54:53,767 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:53,768 INFO L82 PathProgramCache]: Analyzing trace with hash -218751588, now seen corresponding path program 16 times [2020-11-29 19:54:53,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:53,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372341888] [2020-11-29 19:54:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 1198 proven. 610 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-11-29 19:54:54,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372341888] [2020-11-29 19:54:54,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114243849] [2020-11-29 19:54:54,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:54,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:54:54,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:54,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 19:54:54,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 1198 proven. 610 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-11-29 19:54:54,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:54,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-29 19:54:54,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128881024] [2020-11-29 19:54:54,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 19:54:54,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:54,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 19:54:54,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:54:54,433 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 24 states. [2020-11-29 19:54:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:54,561 INFO L93 Difference]: Finished difference Result 199 states and 240 transitions. [2020-11-29 19:54:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 19:54:54,562 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 127 [2020-11-29 19:54:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:54,563 INFO L225 Difference]: With dead ends: 199 [2020-11-29 19:54:54,563 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 19:54:54,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:54:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 19:54:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-11-29 19:54:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-29 19:54:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-11-29 19:54:54,574 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 127 [2020-11-29 19:54:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:54,575 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-11-29 19:54:54,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 19:54:54,575 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-11-29 19:54:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-29 19:54:54,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:54,577 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:54,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:54,803 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:54,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:54,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1183681551, now seen corresponding path program 17 times [2020-11-29 19:54:54,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:54,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798807463] [2020-11-29 19:54:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1256 proven. 672 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-11-29 19:54:55,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798807463] [2020-11-29 19:54:55,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117532392] [2020-11-29 19:54:55,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:55,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2020-11-29 19:54:55,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:55,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 19:54:55,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1256 proven. 672 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-11-29 19:54:55,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:55,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-29 19:54:55,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946586717] [2020-11-29 19:54:55,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-29 19:54:55,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:55,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-29 19:54:55,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-11-29 19:54:55,365 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 25 states. [2020-11-29 19:54:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:55,466 INFO L93 Difference]: Finished difference Result 202 states and 243 transitions. [2020-11-29 19:54:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-29 19:54:55,467 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 130 [2020-11-29 19:54:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:55,468 INFO L225 Difference]: With dead ends: 202 [2020-11-29 19:54:55,468 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 19:54:55,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-11-29 19:54:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 19:54:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2020-11-29 19:54:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 19:54:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2020-11-29 19:54:55,477 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 130 [2020-11-29 19:54:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:55,478 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2020-11-29 19:54:55,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-29 19:54:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2020-11-29 19:54:55,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-29 19:54:55,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:55,479 INFO L422 BasicCegarLoop]: trace histogram [42, 41, 22, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:55,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:55,707 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:55,707 INFO L82 PathProgramCache]: Analyzing trace with hash -372529988, now seen corresponding path program 18 times [2020-11-29 19:54:55,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:55,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501359808] [2020-11-29 19:54:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 1314 proven. 737 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-11-29 19:54:56,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501359808] [2020-11-29 19:54:56,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205873202] [2020-11-29 19:54:56,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:56,338 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2020-11-29 19:54:56,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:54:56,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-29 19:54:56,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 1403 proven. 1122 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-11-29 19:54:57,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:57,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2020-11-29 19:54:57,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492375049] [2020-11-29 19:54:57,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-29 19:54:57,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:57,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-29 19:54:57,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 19:54:57,265 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand 48 states. [2020-11-29 19:54:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:58,755 INFO L93 Difference]: Finished difference Result 388 states and 492 transitions. [2020-11-29 19:54:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-11-29 19:54:58,756 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 133 [2020-11-29 19:54:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:58,759 INFO L225 Difference]: With dead ends: 388 [2020-11-29 19:54:58,759 INFO L226 Difference]: Without dead ends: 321 [2020-11-29 19:54:58,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1835, Invalid=6721, Unknown=0, NotChecked=0, Total=8556 [2020-11-29 19:54:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-11-29 19:54:58,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 146. [2020-11-29 19:54:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:54:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 169 transitions. [2020-11-29 19:54:58,779 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 169 transitions. Word has length 133 [2020-11-29 19:54:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:58,779 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 169 transitions. [2020-11-29 19:54:58,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-29 19:54:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 169 transitions. [2020-11-29 19:54:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-29 19:54:58,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:58,782 INFO L422 BasicCegarLoop]: trace histogram [46, 45, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:54:59,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 19:54:59,007 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:54:59,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1301892674, now seen corresponding path program 19 times [2020-11-29 19:54:59,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:54:59,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760632155] [2020-11-29 19:54:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:54:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 1585 proven. 805 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-11-29 19:54:59,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760632155] [2020-11-29 19:54:59,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586995921] [2020-11-29 19:54:59,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:54:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:59,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 19:54:59,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:54:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 1585 proven. 805 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-11-29 19:54:59,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:54:59,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-29 19:54:59,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077815864] [2020-11-29 19:54:59,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-29 19:54:59,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:54:59,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-29 19:54:59,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 19:54:59,637 INFO L87 Difference]: Start difference. First operand 146 states and 169 transitions. Second operand 27 states. [2020-11-29 19:54:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:54:59,778 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2020-11-29 19:54:59,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 19:54:59,779 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 145 [2020-11-29 19:54:59,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:54:59,780 INFO L225 Difference]: With dead ends: 226 [2020-11-29 19:54:59,780 INFO L226 Difference]: Without dead ends: 150 [2020-11-29 19:54:59,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 19:54:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-29 19:54:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-11-29 19:54:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-29 19:54:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 172 transitions. [2020-11-29 19:54:59,794 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 172 transitions. Word has length 145 [2020-11-29 19:54:59,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:54:59,794 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 172 transitions. [2020-11-29 19:54:59,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-29 19:54:59,795 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 172 transitions. [2020-11-29 19:54:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-29 19:54:59,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:54:59,797 INFO L422 BasicCegarLoop]: trace histogram [47, 46, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:00,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:00,019 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:00,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:00,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2016900751, now seen corresponding path program 20 times [2020-11-29 19:55:00,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:00,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415749081] [2020-11-29 19:55:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 1652 proven. 876 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-11-29 19:55:00,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415749081] [2020-11-29 19:55:00,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723261743] [2020-11-29 19:55:00,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:00,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:55:00,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:00,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-29 19:55:00,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 1652 proven. 876 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-11-29 19:55:00,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:00,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-29 19:55:00,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672157122] [2020-11-29 19:55:00,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 19:55:00,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:00,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 19:55:00,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-11-29 19:55:00,653 INFO L87 Difference]: Start difference. First operand 149 states and 172 transitions. Second operand 28 states. [2020-11-29 19:55:00,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:00,787 INFO L93 Difference]: Finished difference Result 229 states and 276 transitions. [2020-11-29 19:55:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-29 19:55:00,788 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 148 [2020-11-29 19:55:00,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:00,789 INFO L225 Difference]: With dead ends: 229 [2020-11-29 19:55:00,789 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 19:55:00,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-11-29 19:55:00,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 19:55:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-11-29 19:55:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-29 19:55:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 175 transitions. [2020-11-29 19:55:00,808 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 175 transitions. Word has length 148 [2020-11-29 19:55:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:00,809 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 175 transitions. [2020-11-29 19:55:00,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 19:55:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 175 transitions. [2020-11-29 19:55:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-29 19:55:00,811 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:00,811 INFO L422 BasicCegarLoop]: trace histogram [48, 47, 25, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:01,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 19:55:01,037 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:01,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:01,037 INFO L82 PathProgramCache]: Analyzing trace with hash 215265502, now seen corresponding path program 21 times [2020-11-29 19:55:01,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:01,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917788186] [2020-11-29 19:55:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3384 backedges. 1719 proven. 950 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-11-29 19:55:01,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917788186] [2020-11-29 19:55:01,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834104347] [2020-11-29 19:55:01,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:01,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2020-11-29 19:55:01,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:01,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-29 19:55:01,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3384 backedges. 1820 proven. 1497 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-29 19:55:02,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:02,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2020-11-29 19:55:02,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297658171] [2020-11-29 19:55:02,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-29 19:55:02,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-29 19:55:02,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 19:55:02,667 INFO L87 Difference]: Start difference. First operand 152 states and 175 transitions. Second operand 54 states. [2020-11-29 19:55:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:04,100 INFO L93 Difference]: Finished difference Result 442 states and 561 transitions. [2020-11-29 19:55:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-29 19:55:04,101 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 151 [2020-11-29 19:55:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:04,104 INFO L225 Difference]: With dead ends: 442 [2020-11-29 19:55:04,104 INFO L226 Difference]: Without dead ends: 366 [2020-11-29 19:55:04,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2309, Invalid=8611, Unknown=0, NotChecked=0, Total=10920 [2020-11-29 19:55:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-11-29 19:55:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 164. [2020-11-29 19:55:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-29 19:55:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 190 transitions. [2020-11-29 19:55:04,127 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 190 transitions. Word has length 151 [2020-11-29 19:55:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:04,128 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 190 transitions. [2020-11-29 19:55:04,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-29 19:55:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 190 transitions. [2020-11-29 19:55:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-11-29 19:55:04,130 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:04,131 INFO L422 BasicCegarLoop]: trace histogram [52, 51, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:04,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 19:55:04,355 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:04,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:04,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1979325084, now seen corresponding path program 22 times [2020-11-29 19:55:04,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:04,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006876243] [2020-11-29 19:55:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3978 backedges. 2026 proven. 1027 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:04,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006876243] [2020-11-29 19:55:04,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248856168] [2020-11-29 19:55:04,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:04,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:55:04,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:05,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-29 19:55:05,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3978 backedges. 2026 proven. 1027 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:05,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:05,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-29 19:55:05,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128449205] [2020-11-29 19:55:05,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-29 19:55:05,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-29 19:55:05,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-11-29 19:55:05,091 INFO L87 Difference]: Start difference. First operand 164 states and 190 transitions. Second operand 30 states. [2020-11-29 19:55:05,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:05,248 INFO L93 Difference]: Finished difference Result 253 states and 306 transitions. [2020-11-29 19:55:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-29 19:55:05,249 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 163 [2020-11-29 19:55:05,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:05,250 INFO L225 Difference]: With dead ends: 253 [2020-11-29 19:55:05,250 INFO L226 Difference]: Without dead ends: 168 [2020-11-29 19:55:05,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-11-29 19:55:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-29 19:55:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-11-29 19:55:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-29 19:55:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 193 transitions. [2020-11-29 19:55:05,267 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 193 transitions. Word has length 163 [2020-11-29 19:55:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:05,267 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 193 transitions. [2020-11-29 19:55:05,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-29 19:55:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 193 transitions. [2020-11-29 19:55:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-29 19:55:05,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:05,270 INFO L422 BasicCegarLoop]: trace histogram [53, 52, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:05,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:05,470 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:05,471 INFO L82 PathProgramCache]: Analyzing trace with hash -78214257, now seen corresponding path program 23 times [2020-11-29 19:55:05,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:05,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552212324] [2020-11-29 19:55:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 2102 proven. 1107 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:06,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552212324] [2020-11-29 19:55:06,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402546237] [2020-11-29 19:55:06,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:06,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2020-11-29 19:55:06,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:06,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 19:55:06,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 2102 proven. 1107 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:06,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:06,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-29 19:55:06,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115109847] [2020-11-29 19:55:06,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-29 19:55:06,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:06,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-29 19:55:06,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 19:55:06,286 INFO L87 Difference]: Start difference. First operand 167 states and 193 transitions. Second operand 31 states. [2020-11-29 19:55:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:06,447 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2020-11-29 19:55:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-29 19:55:06,448 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 166 [2020-11-29 19:55:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:06,449 INFO L225 Difference]: With dead ends: 256 [2020-11-29 19:55:06,449 INFO L226 Difference]: Without dead ends: 171 [2020-11-29 19:55:06,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 19:55:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-29 19:55:06,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2020-11-29 19:55:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-29 19:55:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 196 transitions. [2020-11-29 19:55:06,465 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 196 transitions. Word has length 166 [2020-11-29 19:55:06,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:06,465 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 196 transitions. [2020-11-29 19:55:06,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-29 19:55:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 196 transitions. [2020-11-29 19:55:06,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-11-29 19:55:06,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:06,467 INFO L422 BasicCegarLoop]: trace histogram [54, 53, 28, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:06,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-29 19:55:06,687 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:06,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1540526524, now seen corresponding path program 24 times [2020-11-29 19:55:06,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:06,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171364204] [2020-11-29 19:55:06,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4293 backedges. 2178 proven. 1190 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:07,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171364204] [2020-11-29 19:55:07,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946444911] [2020-11-29 19:55:07,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:07,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 54 check-sat command(s) [2020-11-29 19:55:07,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:07,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 19:55:07,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4293 backedges. 2178 proven. 1190 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:07,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:07,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2020-11-29 19:55:07,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142647336] [2020-11-29 19:55:07,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-29 19:55:07,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:07,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-29 19:55:07,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-11-29 19:55:07,430 INFO L87 Difference]: Start difference. First operand 170 states and 196 transitions. Second operand 32 states. [2020-11-29 19:55:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:07,673 INFO L93 Difference]: Finished difference Result 259 states and 312 transitions. [2020-11-29 19:55:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-29 19:55:07,674 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 169 [2020-11-29 19:55:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:07,675 INFO L225 Difference]: With dead ends: 259 [2020-11-29 19:55:07,675 INFO L226 Difference]: Without dead ends: 174 [2020-11-29 19:55:07,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-11-29 19:55:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-29 19:55:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2020-11-29 19:55:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-11-29 19:55:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 199 transitions. [2020-11-29 19:55:07,697 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 199 transitions. Word has length 169 [2020-11-29 19:55:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:07,697 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 199 transitions. [2020-11-29 19:55:07,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-29 19:55:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 199 transitions. [2020-11-29 19:55:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-29 19:55:07,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:07,699 INFO L422 BasicCegarLoop]: trace histogram [55, 54, 29, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:07,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:07,900 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:07,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:07,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1554333807, now seen corresponding path program 25 times [2020-11-29 19:55:07,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:07,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481977903] [2020-11-29 19:55:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 2254 proven. 1276 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:08,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481977903] [2020-11-29 19:55:08,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578197952] [2020-11-29 19:55:08,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:08,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-29 19:55:08,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 2254 proven. 1276 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:08,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:08,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-29 19:55:08,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549097529] [2020-11-29 19:55:08,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-29 19:55:08,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:08,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-29 19:55:08,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 19:55:08,794 INFO L87 Difference]: Start difference. First operand 173 states and 199 transitions. Second operand 33 states. [2020-11-29 19:55:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:08,939 INFO L93 Difference]: Finished difference Result 262 states and 315 transitions. [2020-11-29 19:55:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-29 19:55:08,940 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 172 [2020-11-29 19:55:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:08,942 INFO L225 Difference]: With dead ends: 262 [2020-11-29 19:55:08,942 INFO L226 Difference]: Without dead ends: 177 [2020-11-29 19:55:08,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 19:55:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-29 19:55:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2020-11-29 19:55:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-29 19:55:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 202 transitions. [2020-11-29 19:55:08,959 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 202 transitions. Word has length 172 [2020-11-29 19:55:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:08,959 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 202 transitions. [2020-11-29 19:55:08,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-29 19:55:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 202 transitions. [2020-11-29 19:55:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-11-29 19:55:08,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:08,961 INFO L422 BasicCegarLoop]: trace histogram [56, 55, 30, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:09,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-29 19:55:09,175 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:09,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:09,175 INFO L82 PathProgramCache]: Analyzing trace with hash 570241244, now seen corresponding path program 26 times [2020-11-29 19:55:09,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:09,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063288008] [2020-11-29 19:55:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 2330 proven. 1365 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:09,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063288008] [2020-11-29 19:55:09,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209434388] [2020-11-29 19:55:09,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:10,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:55:10,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:10,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-29 19:55:10,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 2330 proven. 1365 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:10,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:10,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2020-11-29 19:55:10,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699314160] [2020-11-29 19:55:10,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-29 19:55:10,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:10,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-29 19:55:10,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 19:55:10,139 INFO L87 Difference]: Start difference. First operand 176 states and 202 transitions. Second operand 34 states. [2020-11-29 19:55:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:10,312 INFO L93 Difference]: Finished difference Result 265 states and 318 transitions. [2020-11-29 19:55:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-29 19:55:10,313 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 175 [2020-11-29 19:55:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:10,314 INFO L225 Difference]: With dead ends: 265 [2020-11-29 19:55:10,314 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 19:55:10,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 19:55:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 19:55:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2020-11-29 19:55:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-29 19:55:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2020-11-29 19:55:10,334 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 175 [2020-11-29 19:55:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:10,335 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2020-11-29 19:55:10,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-29 19:55:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2020-11-29 19:55:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-29 19:55:10,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:10,336 INFO L422 BasicCegarLoop]: trace histogram [57, 56, 31, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:10,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-29 19:55:10,547 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:10,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:10,548 INFO L82 PathProgramCache]: Analyzing trace with hash 915459407, now seen corresponding path program 27 times [2020-11-29 19:55:10,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:10,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596330740] [2020-11-29 19:55:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 2406 proven. 1457 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2020-11-29 19:55:11,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596330740] [2020-11-29 19:55:11,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374289625] [2020-11-29 19:55:11,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:11,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2020-11-29 19:55:11,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:11,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 59 conjunts are in the unsatisfiable core [2020-11-29 19:55:11,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 2786 proven. 1926 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-11-29 19:55:12,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:12,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2020-11-29 19:55:12,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446738653] [2020-11-29 19:55:12,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-11-29 19:55:12,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:12,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-11-29 19:55:12,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2020-11-29 19:55:12,853 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand 66 states. [2020-11-29 19:55:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:15,801 INFO L93 Difference]: Finished difference Result 742 states and 957 transitions. [2020-11-29 19:55:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-11-29 19:55:15,801 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 178 [2020-11-29 19:55:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:15,806 INFO L225 Difference]: With dead ends: 742 [2020-11-29 19:55:15,806 INFO L226 Difference]: Without dead ends: 657 [2020-11-29 19:55:15,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3814 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3419, Invalid=13093, Unknown=0, NotChecked=0, Total=16512 [2020-11-29 19:55:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-11-29 19:55:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 200. [2020-11-29 19:55:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-11-29 19:55:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 232 transitions. [2020-11-29 19:55:15,840 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 232 transitions. Word has length 178 [2020-11-29 19:55:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:15,840 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 232 transitions. [2020-11-29 19:55:15,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-11-29 19:55:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 232 transitions. [2020-11-29 19:55:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-29 19:55:15,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:15,842 INFO L422 BasicCegarLoop]: trace histogram [64, 63, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:16,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:16,071 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:16,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:16,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1150179428, now seen corresponding path program 28 times [2020-11-29 19:55:16,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:16,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922822613] [2020-11-29 19:55:16,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6048 backedges. 3070 proven. 1552 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:16,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922822613] [2020-11-29 19:55:16,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910338923] [2020-11-29 19:55:16,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:17,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:55:17,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:17,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-29 19:55:17,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6048 backedges. 3070 proven. 1552 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:17,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:17,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2020-11-29 19:55:17,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165817823] [2020-11-29 19:55:17,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-29 19:55:17,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:17,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-29 19:55:17,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 19:55:17,125 INFO L87 Difference]: Start difference. First operand 200 states and 232 transitions. Second operand 36 states. [2020-11-29 19:55:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:17,311 INFO L93 Difference]: Finished difference Result 307 states and 372 transitions. [2020-11-29 19:55:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-29 19:55:17,312 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 199 [2020-11-29 19:55:17,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:17,313 INFO L225 Difference]: With dead ends: 307 [2020-11-29 19:55:17,313 INFO L226 Difference]: Without dead ends: 204 [2020-11-29 19:55:17,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 19:55:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-11-29 19:55:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2020-11-29 19:55:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-11-29 19:55:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 235 transitions. [2020-11-29 19:55:17,350 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 235 transitions. Word has length 199 [2020-11-29 19:55:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:17,351 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 235 transitions. [2020-11-29 19:55:17,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-29 19:55:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 235 transitions. [2020-11-29 19:55:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-29 19:55:17,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:17,352 INFO L422 BasicCegarLoop]: trace histogram [65, 64, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:17,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:17,559 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:17,559 INFO L82 PathProgramCache]: Analyzing trace with hash -677127409, now seen corresponding path program 29 times [2020-11-29 19:55:17,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:17,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506962123] [2020-11-29 19:55:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 3164 proven. 1650 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:18,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506962123] [2020-11-29 19:55:18,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242513733] [2020-11-29 19:55:18,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:18,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 65 check-sat command(s) [2020-11-29 19:55:18,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:18,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 19:55:18,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 3164 proven. 1650 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:18,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:18,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-29 19:55:18,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969009062] [2020-11-29 19:55:18,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-29 19:55:18,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:18,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-29 19:55:18,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-11-29 19:55:18,709 INFO L87 Difference]: Start difference. First operand 203 states and 235 transitions. Second operand 37 states. [2020-11-29 19:55:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:18,888 INFO L93 Difference]: Finished difference Result 310 states and 375 transitions. [2020-11-29 19:55:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-29 19:55:18,889 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 202 [2020-11-29 19:55:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:18,891 INFO L225 Difference]: With dead ends: 310 [2020-11-29 19:55:18,891 INFO L226 Difference]: Without dead ends: 207 [2020-11-29 19:55:18,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-11-29 19:55:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-11-29 19:55:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2020-11-29 19:55:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-29 19:55:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 238 transitions. [2020-11-29 19:55:18,920 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 238 transitions. Word has length 202 [2020-11-29 19:55:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:18,920 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 238 transitions. [2020-11-29 19:55:18,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-11-29 19:55:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 238 transitions. [2020-11-29 19:55:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-29 19:55:18,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:18,922 INFO L422 BasicCegarLoop]: trace histogram [66, 65, 34, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:19,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-11-29 19:55:19,147 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:19,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:19,147 INFO L82 PathProgramCache]: Analyzing trace with hash 227872444, now seen corresponding path program 30 times [2020-11-29 19:55:19,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:19,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161510474] [2020-11-29 19:55:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6435 backedges. 3258 proven. 1751 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:20,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161510474] [2020-11-29 19:55:20,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757143765] [2020-11-29 19:55:20,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:20,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 66 check-sat command(s) [2020-11-29 19:55:20,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:20,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-29 19:55:20,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6435 backedges. 3258 proven. 1751 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:20,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:20,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2020-11-29 19:55:20,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668482900] [2020-11-29 19:55:20,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-29 19:55:20,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:20,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-29 19:55:20,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 19:55:20,447 INFO L87 Difference]: Start difference. First operand 206 states and 238 transitions. Second operand 38 states. [2020-11-29 19:55:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:20,680 INFO L93 Difference]: Finished difference Result 313 states and 378 transitions. [2020-11-29 19:55:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-29 19:55:20,681 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 205 [2020-11-29 19:55:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:20,683 INFO L225 Difference]: With dead ends: 313 [2020-11-29 19:55:20,683 INFO L226 Difference]: Without dead ends: 210 [2020-11-29 19:55:20,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 19:55:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-11-29 19:55:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2020-11-29 19:55:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-11-29 19:55:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 241 transitions. [2020-11-29 19:55:20,710 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 241 transitions. Word has length 205 [2020-11-29 19:55:20,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:20,710 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 241 transitions. [2020-11-29 19:55:20,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-29 19:55:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 241 transitions. [2020-11-29 19:55:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-11-29 19:55:20,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:20,712 INFO L422 BasicCegarLoop]: trace histogram [67, 66, 35, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:20,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:20,939 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:20,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1568776175, now seen corresponding path program 31 times [2020-11-29 19:55:20,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:20,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981567051] [2020-11-29 19:55:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6633 backedges. 3352 proven. 1855 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:21,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981567051] [2020-11-29 19:55:21,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256527531] [2020-11-29 19:55:21,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:21,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 19:55:21,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6633 backedges. 3352 proven. 1855 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:21,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:21,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2020-11-29 19:55:21,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815545342] [2020-11-29 19:55:21,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-29 19:55:21,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:21,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-29 19:55:21,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 19:55:21,937 INFO L87 Difference]: Start difference. First operand 209 states and 241 transitions. Second operand 39 states. [2020-11-29 19:55:22,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:22,076 INFO L93 Difference]: Finished difference Result 316 states and 381 transitions. [2020-11-29 19:55:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-29 19:55:22,076 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 208 [2020-11-29 19:55:22,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:22,078 INFO L225 Difference]: With dead ends: 316 [2020-11-29 19:55:22,078 INFO L226 Difference]: Without dead ends: 213 [2020-11-29 19:55:22,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 19:55:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-11-29 19:55:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2020-11-29 19:55:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-29 19:55:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-11-29 19:55:22,102 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 208 [2020-11-29 19:55:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:22,102 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-11-29 19:55:22,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-11-29 19:55:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-11-29 19:55:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-11-29 19:55:22,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:22,104 INFO L422 BasicCegarLoop]: trace histogram [68, 67, 36, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:22,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-29 19:55:22,327 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash 941006300, now seen corresponding path program 32 times [2020-11-29 19:55:22,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:22,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359508938] [2020-11-29 19:55:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6834 backedges. 3446 proven. 1962 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:23,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359508938] [2020-11-29 19:55:23,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272271682] [2020-11-29 19:55:23,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:23,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:55:23,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:23,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 19:55:23,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6834 backedges. 3446 proven. 1962 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:23,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:23,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2020-11-29 19:55:23,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807467660] [2020-11-29 19:55:23,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-29 19:55:23,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:23,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-29 19:55:23,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 19:55:23,351 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 40 states. [2020-11-29 19:55:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:23,597 INFO L93 Difference]: Finished difference Result 319 states and 384 transitions. [2020-11-29 19:55:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-29 19:55:23,598 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 211 [2020-11-29 19:55:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:23,599 INFO L225 Difference]: With dead ends: 319 [2020-11-29 19:55:23,599 INFO L226 Difference]: Without dead ends: 216 [2020-11-29 19:55:23,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 19:55:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-29 19:55:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2020-11-29 19:55:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-11-29 19:55:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 247 transitions. [2020-11-29 19:55:23,623 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 247 transitions. Word has length 211 [2020-11-29 19:55:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:23,623 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 247 transitions. [2020-11-29 19:55:23,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-29 19:55:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 247 transitions. [2020-11-29 19:55:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-11-29 19:55:23,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:23,625 INFO L422 BasicCegarLoop]: trace histogram [69, 68, 37, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:23,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-29 19:55:23,839 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:23,839 INFO L82 PathProgramCache]: Analyzing trace with hash -663733041, now seen corresponding path program 33 times [2020-11-29 19:55:23,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:23,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705429937] [2020-11-29 19:55:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7038 backedges. 3540 proven. 2072 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2020-11-29 19:55:24,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705429937] [2020-11-29 19:55:24,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776090471] [2020-11-29 19:55:24,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:24,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2020-11-29 19:55:24,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:24,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 71 conjunts are in the unsatisfiable core [2020-11-29 19:55:24,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7038 backedges. 3998 proven. 2946 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-29 19:55:26,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:26,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 78 [2020-11-29 19:55:26,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143361119] [2020-11-29 19:55:26,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-11-29 19:55:26,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:26,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-11-29 19:55:26,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2020-11-29 19:55:26,622 INFO L87 Difference]: Start difference. First operand 215 states and 247 transitions. Second operand 78 states. [2020-11-29 19:55:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:29,050 INFO L93 Difference]: Finished difference Result 904 states and 1167 transitions. [2020-11-29 19:55:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-11-29 19:55:29,051 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 214 [2020-11-29 19:55:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:29,055 INFO L225 Difference]: With dead ends: 904 [2020-11-29 19:55:29,055 INFO L226 Difference]: Without dead ends: 801 [2020-11-29 19:55:29,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5440 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4745, Invalid=18511, Unknown=0, NotChecked=0, Total=23256 [2020-11-29 19:55:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-11-29 19:55:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 236. [2020-11-29 19:55:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-11-29 19:55:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 274 transitions. [2020-11-29 19:55:29,109 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 274 transitions. Word has length 214 [2020-11-29 19:55:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:29,110 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 274 transitions. [2020-11-29 19:55:29,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-11-29 19:55:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 274 transitions. [2020-11-29 19:55:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-11-29 19:55:29,111 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:29,112 INFO L422 BasicCegarLoop]: trace histogram [76, 75, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:29,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-29 19:55:29,327 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:29,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:29,327 INFO L82 PathProgramCache]: Analyzing trace with hash -210713444, now seen corresponding path program 34 times [2020-11-29 19:55:29,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:29,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930033981] [2020-11-29 19:55:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8550 backedges. 4330 proven. 2185 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:30,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930033981] [2020-11-29 19:55:30,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195508053] [2020-11-29 19:55:30,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:30,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:55:30,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:30,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-29 19:55:30,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8550 backedges. 4330 proven. 2185 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:30,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:30,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2020-11-29 19:55:30,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444619319] [2020-11-29 19:55:30,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-29 19:55:30,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:30,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-29 19:55:30,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 19:55:30,617 INFO L87 Difference]: Start difference. First operand 236 states and 274 transitions. Second operand 42 states. [2020-11-29 19:55:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:30,744 INFO L93 Difference]: Finished difference Result 361 states and 438 transitions. [2020-11-29 19:55:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-29 19:55:30,744 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 235 [2020-11-29 19:55:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:30,745 INFO L225 Difference]: With dead ends: 361 [2020-11-29 19:55:30,745 INFO L226 Difference]: Without dead ends: 240 [2020-11-29 19:55:30,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 19:55:30,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-11-29 19:55:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2020-11-29 19:55:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-11-29 19:55:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 277 transitions. [2020-11-29 19:55:30,776 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 277 transitions. Word has length 235 [2020-11-29 19:55:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:30,777 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 277 transitions. [2020-11-29 19:55:30,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-29 19:55:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 277 transitions. [2020-11-29 19:55:30,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-11-29 19:55:30,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:30,779 INFO L422 BasicCegarLoop]: trace histogram [77, 76, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:30,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-29 19:55:30,988 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:30,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:30,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1574339953, now seen corresponding path program 35 times [2020-11-29 19:55:30,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:30,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303123157] [2020-11-29 19:55:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 4442 proven. 2301 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:31,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303123157] [2020-11-29 19:55:31,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754028116] [2020-11-29 19:55:31,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:32,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 77 check-sat command(s) [2020-11-29 19:55:32,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:32,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-29 19:55:32,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 4442 proven. 2301 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:32,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:32,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2020-11-29 19:55:32,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520976355] [2020-11-29 19:55:32,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-11-29 19:55:32,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:32,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-11-29 19:55:32,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 19:55:32,192 INFO L87 Difference]: Start difference. First operand 239 states and 277 transitions. Second operand 43 states. [2020-11-29 19:55:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:32,413 INFO L93 Difference]: Finished difference Result 364 states and 441 transitions. [2020-11-29 19:55:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-29 19:55:32,414 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 238 [2020-11-29 19:55:32,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:32,416 INFO L225 Difference]: With dead ends: 364 [2020-11-29 19:55:32,416 INFO L226 Difference]: Without dead ends: 243 [2020-11-29 19:55:32,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 19:55:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-11-29 19:55:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2020-11-29 19:55:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-11-29 19:55:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 280 transitions. [2020-11-29 19:55:32,452 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 280 transitions. Word has length 238 [2020-11-29 19:55:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:32,452 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 280 transitions. [2020-11-29 19:55:32,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-11-29 19:55:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 280 transitions. [2020-11-29 19:55:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-11-29 19:55:32,454 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:32,454 INFO L422 BasicCegarLoop]: trace histogram [78, 77, 40, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:32,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-29 19:55:32,667 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:32,667 INFO L82 PathProgramCache]: Analyzing trace with hash 723983292, now seen corresponding path program 36 times [2020-11-29 19:55:32,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:32,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146910434] [2020-11-29 19:55:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9009 backedges. 4554 proven. 2420 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:33,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146910434] [2020-11-29 19:55:33,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633636018] [2020-11-29 19:55:33,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:33,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 78 check-sat command(s) [2020-11-29 19:55:33,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:33,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-29 19:55:33,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9009 backedges. 4554 proven. 2420 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:33,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:33,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2020-11-29 19:55:33,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078452140] [2020-11-29 19:55:33,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-29 19:55:33,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:33,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-29 19:55:33,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 19:55:33,942 INFO L87 Difference]: Start difference. First operand 242 states and 280 transitions. Second operand 44 states. [2020-11-29 19:55:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:34,143 INFO L93 Difference]: Finished difference Result 367 states and 444 transitions. [2020-11-29 19:55:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-29 19:55:34,144 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 241 [2020-11-29 19:55:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:34,145 INFO L225 Difference]: With dead ends: 367 [2020-11-29 19:55:34,145 INFO L226 Difference]: Without dead ends: 246 [2020-11-29 19:55:34,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 19:55:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-11-29 19:55:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2020-11-29 19:55:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-11-29 19:55:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 283 transitions. [2020-11-29 19:55:34,184 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 283 transitions. Word has length 241 [2020-11-29 19:55:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:34,184 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 283 transitions. [2020-11-29 19:55:34,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-29 19:55:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 283 transitions. [2020-11-29 19:55:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-11-29 19:55:34,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:34,186 INFO L422 BasicCegarLoop]: trace histogram [79, 78, 41, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:34,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-29 19:55:34,399 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:34,399 INFO L82 PathProgramCache]: Analyzing trace with hash -296857745, now seen corresponding path program 37 times [2020-11-29 19:55:34,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:34,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838859741] [2020-11-29 19:55:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9243 backedges. 4666 proven. 2542 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:35,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838859741] [2020-11-29 19:55:35,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32548719] [2020-11-29 19:55:35,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:35,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-29 19:55:35,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9243 backedges. 4666 proven. 2542 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:35,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:35,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2020-11-29 19:55:35,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241738732] [2020-11-29 19:55:35,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-29 19:55:35,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:35,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-29 19:55:35,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-11-29 19:55:35,653 INFO L87 Difference]: Start difference. First operand 245 states and 283 transitions. Second operand 45 states. [2020-11-29 19:55:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:35,836 INFO L93 Difference]: Finished difference Result 370 states and 447 transitions. [2020-11-29 19:55:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-29 19:55:35,836 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 244 [2020-11-29 19:55:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:35,837 INFO L225 Difference]: With dead ends: 370 [2020-11-29 19:55:35,837 INFO L226 Difference]: Without dead ends: 249 [2020-11-29 19:55:35,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-11-29 19:55:35,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-11-29 19:55:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248. [2020-11-29 19:55:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-29 19:55:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 286 transitions. [2020-11-29 19:55:35,874 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 286 transitions. Word has length 244 [2020-11-29 19:55:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:35,875 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 286 transitions. [2020-11-29 19:55:35,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-11-29 19:55:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 286 transitions. [2020-11-29 19:55:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-11-29 19:55:35,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:35,877 INFO L422 BasicCegarLoop]: trace histogram [80, 79, 42, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:36,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-29 19:55:36,099 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:36,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:36,099 INFO L82 PathProgramCache]: Analyzing trace with hash 491231964, now seen corresponding path program 38 times [2020-11-29 19:55:36,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:36,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634644985] [2020-11-29 19:55:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9480 backedges. 4778 proven. 2667 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:37,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634644985] [2020-11-29 19:55:37,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743788147] [2020-11-29 19:55:37,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:37,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:55:37,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:37,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-29 19:55:37,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9480 backedges. 4778 proven. 2667 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:37,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:37,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2020-11-29 19:55:37,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648809205] [2020-11-29 19:55:37,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-29 19:55:37,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:37,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-29 19:55:37,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 19:55:37,692 INFO L87 Difference]: Start difference. First operand 248 states and 286 transitions. Second operand 46 states. [2020-11-29 19:55:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:37,877 INFO L93 Difference]: Finished difference Result 373 states and 450 transitions. [2020-11-29 19:55:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-29 19:55:37,877 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 247 [2020-11-29 19:55:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:37,878 INFO L225 Difference]: With dead ends: 373 [2020-11-29 19:55:37,878 INFO L226 Difference]: Without dead ends: 252 [2020-11-29 19:55:37,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 19:55:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-11-29 19:55:37,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2020-11-29 19:55:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-11-29 19:55:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 289 transitions. [2020-11-29 19:55:37,903 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 289 transitions. Word has length 247 [2020-11-29 19:55:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:37,904 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 289 transitions. [2020-11-29 19:55:37,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-29 19:55:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 289 transitions. [2020-11-29 19:55:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-11-29 19:55:37,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:37,905 INFO L422 BasicCegarLoop]: trace histogram [81, 80, 43, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:38,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:38,131 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:38,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:38,131 INFO L82 PathProgramCache]: Analyzing trace with hash -2114454449, now seen corresponding path program 39 times [2020-11-29 19:55:38,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:38,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480301030] [2020-11-29 19:55:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 4890 proven. 2795 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2020-11-29 19:55:39,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480301030] [2020-11-29 19:55:39,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906868894] [2020-11-29 19:55:39,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:39,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2020-11-29 19:55:39,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:39,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 83 conjunts are in the unsatisfiable core [2020-11-29 19:55:39,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 5426 proven. 4182 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-29 19:55:42,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:42,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 90 [2020-11-29 19:55:42,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365651647] [2020-11-29 19:55:42,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-11-29 19:55:42,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:42,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-11-29 19:55:42,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2020-11-29 19:55:42,098 INFO L87 Difference]: Start difference. First operand 251 states and 289 transitions. Second operand 90 states. [2020-11-29 19:55:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:45,051 INFO L93 Difference]: Finished difference Result 1066 states and 1377 transitions. [2020-11-29 19:55:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-11-29 19:55:45,052 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 250 [2020-11-29 19:55:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:45,056 INFO L225 Difference]: With dead ends: 1066 [2020-11-29 19:55:45,056 INFO L226 Difference]: Without dead ends: 945 [2020-11-29 19:55:45,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7354 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6287, Invalid=24865, Unknown=0, NotChecked=0, Total=31152 [2020-11-29 19:55:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-11-29 19:55:45,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 272. [2020-11-29 19:55:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-11-29 19:55:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 316 transitions. [2020-11-29 19:55:45,119 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 316 transitions. Word has length 250 [2020-11-29 19:55:45,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:45,119 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 316 transitions. [2020-11-29 19:55:45,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-11-29 19:55:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 316 transitions. [2020-11-29 19:55:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-11-29 19:55:45,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:45,121 INFO L422 BasicCegarLoop]: trace histogram [88, 87, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:45,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:45,335 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:45,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:45,335 INFO L82 PathProgramCache]: Analyzing trace with hash -452234852, now seen corresponding path program 40 times [2020-11-29 19:55:45,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:45,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639041789] [2020-11-29 19:55:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11484 backedges. 5806 proven. 2926 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2020-11-29 19:55:46,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639041789] [2020-11-29 19:55:46,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857484339] [2020-11-29 19:55:46,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:46,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:55:46,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:46,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-29 19:55:46,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 11484 backedges. 5806 proven. 2926 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2020-11-29 19:55:46,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:46,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2020-11-29 19:55:46,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438947568] [2020-11-29 19:55:46,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-29 19:55:46,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:46,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-29 19:55:46,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 19:55:46,952 INFO L87 Difference]: Start difference. First operand 272 states and 316 transitions. Second operand 48 states. [2020-11-29 19:55:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:47,184 INFO L93 Difference]: Finished difference Result 415 states and 504 transitions. [2020-11-29 19:55:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-29 19:55:47,184 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 271 [2020-11-29 19:55:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:47,186 INFO L225 Difference]: With dead ends: 415 [2020-11-29 19:55:47,186 INFO L226 Difference]: Without dead ends: 276 [2020-11-29 19:55:47,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 19:55:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-11-29 19:55:47,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2020-11-29 19:55:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-11-29 19:55:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 319 transitions. [2020-11-29 19:55:47,224 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 319 transitions. Word has length 271 [2020-11-29 19:55:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:47,224 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 319 transitions. [2020-11-29 19:55:47,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-29 19:55:47,224 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 319 transitions. [2020-11-29 19:55:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-11-29 19:55:47,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:47,226 INFO L422 BasicCegarLoop]: trace histogram [89, 88, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:47,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:47,431 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:47,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:47,432 INFO L82 PathProgramCache]: Analyzing trace with hash -392467953, now seen corresponding path program 41 times [2020-11-29 19:55:47,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:47,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829705921] [2020-11-29 19:55:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11748 backedges. 5936 proven. 3060 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2020-11-29 19:55:48,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829705921] [2020-11-29 19:55:48,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073243037] [2020-11-29 19:55:48,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:48,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 89 check-sat command(s) [2020-11-29 19:55:48,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:48,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 19:55:48,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11748 backedges. 5936 proven. 3060 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2020-11-29 19:55:48,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:48,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2020-11-29 19:55:48,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287944115] [2020-11-29 19:55:48,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-11-29 19:55:48,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:48,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-11-29 19:55:48,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 19:55:48,977 INFO L87 Difference]: Start difference. First operand 275 states and 319 transitions. Second operand 49 states. [2020-11-29 19:55:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:49,153 INFO L93 Difference]: Finished difference Result 418 states and 507 transitions. [2020-11-29 19:55:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-29 19:55:49,154 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 274 [2020-11-29 19:55:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:49,155 INFO L225 Difference]: With dead ends: 418 [2020-11-29 19:55:49,155 INFO L226 Difference]: Without dead ends: 279 [2020-11-29 19:55:49,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 19:55:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-11-29 19:55:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2020-11-29 19:55:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-11-29 19:55:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 322 transitions. [2020-11-29 19:55:49,193 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 322 transitions. Word has length 274 [2020-11-29 19:55:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:49,193 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 322 transitions. [2020-11-29 19:55:49,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-11-29 19:55:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 322 transitions. [2020-11-29 19:55:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-11-29 19:55:49,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:49,195 INFO L422 BasicCegarLoop]: trace histogram [90, 89, 46, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:49,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-11-29 19:55:49,395 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:49,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:49,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2006759612, now seen corresponding path program 42 times [2020-11-29 19:55:49,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:49,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356601790] [2020-11-29 19:55:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12015 backedges. 6066 proven. 3197 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2020-11-29 19:55:50,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356601790] [2020-11-29 19:55:50,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181409571] [2020-11-29 19:55:50,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:51,057 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 90 check-sat command(s) [2020-11-29 19:55:51,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:55:51,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 92 conjunts are in the unsatisfiable core [2020-11-29 19:55:51,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12015 backedges. 6251 proven. 5634 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-11-29 19:55:53,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:53,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96 [2020-11-29 19:55:53,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499907908] [2020-11-29 19:55:53,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-11-29 19:55:53,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:53,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-11-29 19:55:53,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2020-11-29 19:55:53,557 INFO L87 Difference]: Start difference. First operand 278 states and 322 transitions. Second operand 96 states. [2020-11-29 19:55:56,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:56,591 INFO L93 Difference]: Finished difference Result 820 states and 1044 transitions. [2020-11-29 19:55:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2020-11-29 19:55:56,592 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 277 [2020-11-29 19:55:56,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:56,594 INFO L225 Difference]: With dead ends: 820 [2020-11-29 19:55:56,594 INFO L226 Difference]: Without dead ends: 681 [2020-11-29 19:55:56,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8419 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=7139, Invalid=28393, Unknown=0, NotChecked=0, Total=35532 [2020-11-29 19:55:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-11-29 19:55:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 290. [2020-11-29 19:55:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-11-29 19:55:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 337 transitions. [2020-11-29 19:55:56,668 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 337 transitions. Word has length 277 [2020-11-29 19:55:56,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:56,668 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 337 transitions. [2020-11-29 19:55:56,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-11-29 19:55:56,668 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 337 transitions. [2020-11-29 19:55:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-11-29 19:55:56,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:56,670 INFO L422 BasicCegarLoop]: trace histogram [94, 93, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:56,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:56,883 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash -550612034, now seen corresponding path program 43 times [2020-11-29 19:55:56,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:56,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985258631] [2020-11-29 19:55:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 13113 backedges. 6625 proven. 3337 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2020-11-29 19:55:58,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985258631] [2020-11-29 19:55:58,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444784216] [2020-11-29 19:55:58,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:58,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 49 conjunts are in the unsatisfiable core [2020-11-29 19:55:58,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:55:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13113 backedges. 6625 proven. 3337 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2020-11-29 19:55:58,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:55:58,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2020-11-29 19:55:58,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555591358] [2020-11-29 19:55:58,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-11-29 19:55:58,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:58,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-11-29 19:55:58,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 19:55:58,736 INFO L87 Difference]: Start difference. First operand 290 states and 337 transitions. Second operand 51 states. [2020-11-29 19:55:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:59,001 INFO L93 Difference]: Finished difference Result 442 states and 537 transitions. [2020-11-29 19:55:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-29 19:55:59,001 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 289 [2020-11-29 19:55:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:59,003 INFO L225 Difference]: With dead ends: 442 [2020-11-29 19:55:59,003 INFO L226 Difference]: Without dead ends: 294 [2020-11-29 19:55:59,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 19:55:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-11-29 19:55:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2020-11-29 19:55:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-11-29 19:55:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 340 transitions. [2020-11-29 19:55:59,067 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 340 transitions. Word has length 289 [2020-11-29 19:55:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:59,068 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 340 transitions. [2020-11-29 19:55:59,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-11-29 19:55:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 340 transitions. [2020-11-29 19:55:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-11-29 19:55:59,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:59,070 INFO L422 BasicCegarLoop]: trace histogram [95, 94, 48, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:59,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:55:59,283 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:59,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:59,283 INFO L82 PathProgramCache]: Analyzing trace with hash 792343921, now seen corresponding path program 44 times [2020-11-29 19:55:59,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:59,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655515883] [2020-11-29 19:55:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 6764 proven. 3480 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2020-11-29 19:56:00,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655515883] [2020-11-29 19:56:00,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672812141] [2020-11-29 19:56:00,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:01,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:56:01,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:01,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-29 19:56:01,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 6764 proven. 3480 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2020-11-29 19:56:01,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:01,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2020-11-29 19:56:01,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746800723] [2020-11-29 19:56:01,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-29 19:56:01,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:01,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-29 19:56:01,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 19:56:01,251 INFO L87 Difference]: Start difference. First operand 293 states and 340 transitions. Second operand 52 states. [2020-11-29 19:56:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:01,609 INFO L93 Difference]: Finished difference Result 445 states and 540 transitions. [2020-11-29 19:56:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-29 19:56:01,610 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 292 [2020-11-29 19:56:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:01,611 INFO L225 Difference]: With dead ends: 445 [2020-11-29 19:56:01,611 INFO L226 Difference]: Without dead ends: 297 [2020-11-29 19:56:01,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 19:56:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-11-29 19:56:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2020-11-29 19:56:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-11-29 19:56:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 343 transitions. [2020-11-29 19:56:01,686 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 343 transitions. Word has length 292 [2020-11-29 19:56:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:01,686 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 343 transitions. [2020-11-29 19:56:01,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-29 19:56:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 343 transitions. [2020-11-29 19:56:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-11-29 19:56:01,688 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:01,688 INFO L422 BasicCegarLoop]: trace histogram [96, 95, 49, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:01,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-11-29 19:56:01,889 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:01,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:01,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1172837086, now seen corresponding path program 45 times [2020-11-29 19:56:01,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:01,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226060843] [2020-11-29 19:56:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 13680 backedges. 6903 proven. 3626 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2020-11-29 19:56:03,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226060843] [2020-11-29 19:56:03,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896358677] [2020-11-29 19:56:03,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:03,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 96 check-sat command(s) [2020-11-29 19:56:03,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:03,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 98 conjunts are in the unsatisfiable core [2020-11-29 19:56:03,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13680 backedges. 7100 proven. 6441 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-11-29 19:56:06,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:06,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 102 [2020-11-29 19:56:06,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057618018] [2020-11-29 19:56:06,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-11-29 19:56:06,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:06,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-11-29 19:56:06,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2020-11-29 19:56:06,622 INFO L87 Difference]: Start difference. First operand 296 states and 343 transitions. Second operand 102 states. [2020-11-29 19:56:13,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:13,852 INFO L93 Difference]: Finished difference Result 1053 states and 1292 transitions. [2020-11-29 19:56:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2020-11-29 19:56:13,853 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 295 [2020-11-29 19:56:13,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:13,858 INFO L225 Difference]: With dead ends: 1053 [2020-11-29 19:56:13,858 INFO L226 Difference]: Without dead ends: 905 [2020-11-29 19:56:13,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17740 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=12989, Invalid=48763, Unknown=0, NotChecked=0, Total=61752 [2020-11-29 19:56:13,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-11-29 19:56:13,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 308. [2020-11-29 19:56:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-11-29 19:56:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 358 transitions. [2020-11-29 19:56:13,926 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 358 transitions. Word has length 295 [2020-11-29 19:56:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:13,927 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 358 transitions. [2020-11-29 19:56:13,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-11-29 19:56:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 358 transitions. [2020-11-29 19:56:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-11-29 19:56:13,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:13,928 INFO L422 BasicCegarLoop]: trace histogram [100, 99, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:14,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-11-29 19:56:14,129 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:14,129 INFO L82 PathProgramCache]: Analyzing trace with hash 777367196, now seen corresponding path program 46 times [2020-11-29 19:56:14,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:14,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107038058] [2020-11-29 19:56:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14850 backedges. 7203 proven. 7500 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-11-29 19:56:16,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107038058] [2020-11-29 19:56:16,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368779452] [2020-11-29 19:56:16,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:16,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:56:16,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:16,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 102 conjunts are in the unsatisfiable core [2020-11-29 19:56:16,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14850 backedges. 7401 proven. 7302 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-11-29 19:56:16,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:16,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 54 [2020-11-29 19:56:16,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874027247] [2020-11-29 19:56:16,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-29 19:56:16,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-29 19:56:16,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 19:56:16,294 INFO L87 Difference]: Start difference. First operand 308 states and 358 transitions. Second operand 54 states. [2020-11-29 19:56:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:16,757 INFO L93 Difference]: Finished difference Result 465 states and 565 transitions. [2020-11-29 19:56:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-29 19:56:16,758 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 307 [2020-11-29 19:56:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:16,760 INFO L225 Difference]: With dead ends: 465 [2020-11-29 19:56:16,760 INFO L226 Difference]: Without dead ends: 459 [2020-11-29 19:56:16,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 19:56:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-11-29 19:56:16,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 311. [2020-11-29 19:56:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-11-29 19:56:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 362 transitions. [2020-11-29 19:56:16,865 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 362 transitions. Word has length 307 [2020-11-29 19:56:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:16,866 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 362 transitions. [2020-11-29 19:56:16,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-29 19:56:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 362 transitions. [2020-11-29 19:56:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-11-29 19:56:16,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:16,869 INFO L422 BasicCegarLoop]: trace histogram [101, 100, 51, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:17,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-29 19:56:17,087 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:17,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1413173905, now seen corresponding path program 47 times [2020-11-29 19:56:17,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:17,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574229848] [2020-11-29 19:56:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:22,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574229848] [2020-11-29 19:56:22,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435050693] [2020-11-29 19:56:22,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:23,004 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 101 check-sat command(s) [2020-11-29 19:56:23,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:23,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 106 conjunts are in the unsatisfiable core [2020-11-29 19:56:23,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:23,352 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:56:23,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:56:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 7648 proven. 3876 refuted. 0 times theorem prover too weak. 3626 trivial. 0 not checked. [2020-11-29 19:56:23,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:23,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 56] total 106 [2020-11-29 19:56:23,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355480675] [2020-11-29 19:56:23,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 106 states [2020-11-29 19:56:23,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:23,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2020-11-29 19:56:23,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1486, Invalid=9644, Unknown=0, NotChecked=0, Total=11130 [2020-11-29 19:56:23,618 INFO L87 Difference]: Start difference. First operand 311 states and 362 transitions. Second operand 106 states. [2020-11-29 19:56:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:36,014 INFO L93 Difference]: Finished difference Result 4641 states and 6019 transitions. [2020-11-29 19:56:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-11-29 19:56:36,015 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 310 [2020-11-29 19:56:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:36,034 INFO L225 Difference]: With dead ends: 4641 [2020-11-29 19:56:36,034 INFO L226 Difference]: Without dead ends: 4479 [2020-11-29 19:56:36,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1491, Invalid=9851, Unknown=0, NotChecked=0, Total=11342 [2020-11-29 19:56:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2020-11-29 19:56:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 4185. [2020-11-29 19:56:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4185 states. [2020-11-29 19:56:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 4285 transitions. [2020-11-29 19:56:37,722 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 4285 transitions. Word has length 310 [2020-11-29 19:56:37,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:37,723 INFO L481 AbstractCegarLoop]: Abstraction has 4185 states and 4285 transitions. [2020-11-29 19:56:37,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 106 states. [2020-11-29 19:56:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 4285 transitions. [2020-11-29 19:56:37,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-11-29 19:56:37,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:37,725 INFO L422 BasicCegarLoop]: trace histogram [102, 101, 52, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:37,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:37,926 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:37,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1925066364, now seen corresponding path program 48 times [2020-11-29 19:56:37,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:37,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517017901] [2020-11-29 19:56:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7403 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-11-29 19:56:40,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517017901] [2020-11-29 19:56:40,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200180442] [2020-11-29 19:56:40,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:40,509 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 102 check-sat command(s) [2020-11-29 19:56:40,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:40,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 103 conjunts are in the unsatisfiable core [2020-11-29 19:56:40,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-11-29 19:56:40,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:40,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 55 [2020-11-29 19:56:40,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492182801] [2020-11-29 19:56:40,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-29 19:56:40,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-29 19:56:40,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 19:56:40,733 INFO L87 Difference]: Start difference. First operand 4185 states and 4285 transitions. Second operand 55 states. [2020-11-29 19:56:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:43,132 INFO L93 Difference]: Finished difference Result 8373 states and 8574 transitions. [2020-11-29 19:56:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-29 19:56:43,133 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 313 [2020-11-29 19:56:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:43,150 INFO L225 Difference]: With dead ends: 8373 [2020-11-29 19:56:43,150 INFO L226 Difference]: Without dead ends: 4188 [2020-11-29 19:56:43,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 19:56:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2020-11-29 19:56:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 4188. [2020-11-29 19:56:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4188 states. [2020-11-29 19:56:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 4288 transitions. [2020-11-29 19:56:44,849 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 4288 transitions. Word has length 313 [2020-11-29 19:56:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:44,850 INFO L481 AbstractCegarLoop]: Abstraction has 4188 states and 4288 transitions. [2020-11-29 19:56:44,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-11-29 19:56:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 4288 transitions. [2020-11-29 19:56:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-11-29 19:56:44,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:44,853 INFO L422 BasicCegarLoop]: trace histogram [103, 102, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:45,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:45,053 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:45,054 INFO L82 PathProgramCache]: Analyzing trace with hash -214112465, now seen corresponding path program 49 times [2020-11-29 19:56:45,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:45,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60395271] [2020-11-29 19:56:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15759 backedges. 11580 proven. 149 refuted. 0 times theorem prover too weak. 4030 trivial. 0 not checked. [2020-11-29 19:56:47,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60395271] [2020-11-29 19:56:47,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286561569] [2020-11-29 19:56:47,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:47,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 52 conjunts are in the unsatisfiable core [2020-11-29 19:56:47,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 15759 backedges. 11729 proven. 0 refuted. 0 times theorem prover too weak. 4030 trivial. 0 not checked. [2020-11-29 19:56:48,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:56:48,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [53] total 54 [2020-11-29 19:56:48,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654547724] [2020-11-29 19:56:48,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-11-29 19:56:48,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:48,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-11-29 19:56:48,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 19:56:48,005 INFO L87 Difference]: Start difference. First operand 4188 states and 4288 transitions. Second operand 53 states. [2020-11-29 19:56:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:48,394 INFO L93 Difference]: Finished difference Result 4188 states and 4288 transitions. [2020-11-29 19:56:48,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-29 19:56:48,395 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 316 [2020-11-29 19:56:48,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:48,396 INFO L225 Difference]: With dead ends: 4188 [2020-11-29 19:56:48,396 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:56:48,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 19:56:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:56:48,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:56:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:56:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:56:48,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 316 [2020-11-29 19:56:48,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:48,400 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:56:48,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-11-29 19:56:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:56:48,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:56:48,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:48,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:57:10,104 WARN L193 SmtUtils]: Spent 21.49 s on a formula simplification. DAG size of input: 2237 DAG size of output: 1632 [2020-11-29 19:58:13,663 WARN L193 SmtUtils]: Spent 1.06 m on a formula simplification. DAG size of input: 1598 DAG size of output: 507 [2020-11-29 19:58:13,671 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:58:13,672 INFO L274 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-11-29 19:58:13,672 INFO L274 CegarLoopResult]: For program point L29-2(lines 28 36) no Hoare annotation was computed. [2020-11-29 19:58:13,672 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-29 19:58:13,672 INFO L277 CegarLoopResult]: At program point L38(lines 24 39) the Hoare annotation is: true [2020-11-29 19:58:13,672 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:58:13,672 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:58:13,672 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:58:13,675 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 36) the Hoare annotation is: (let ((.cse12 (<= 12 ULTIMATE.start_main_~y~0)) (.cse13 (<= ULTIMATE.start_main_~y~0 12)) (.cse4 (<= ULTIMATE.start_main_~y~0 38)) (.cse5 (<= 38 ULTIMATE.start_main_~y~0)) (.cse17 (<= 16 ULTIMATE.start_main_~y~0)) (.cse18 (<= ULTIMATE.start_main_~y~0 16)) (.cse6 (<= ULTIMATE.start_main_~y~0 6)) (.cse7 (<= 6 ULTIMATE.start_main_~y~0)) (.cse41 (<= ULTIMATE.start_main_~y~0 26)) (.cse42 (<= 26 ULTIMATE.start_main_~y~0)) (.cse29 (<= 42 ULTIMATE.start_main_~y~0)) (.cse30 (<= ULTIMATE.start_main_~y~0 42)) (.cse8 (<= ULTIMATE.start_main_~y~0 21)) (.cse9 (<= 21 ULTIMATE.start_main_~y~0)) (.cse51 (<= 23 ULTIMATE.start_main_~y~0)) (.cse52 (<= ULTIMATE.start_main_~y~0 23)) (.cse61 (<= ULTIMATE.start_main_~y~0 41)) (.cse62 (<= 41 ULTIMATE.start_main_~y~0)) (.cse67 (<= 14 ULTIMATE.start_main_~y~0)) (.cse68 (<= ULTIMATE.start_main_~y~0 14)) (.cse57 (<= 15 ULTIMATE.start_main_~y~0)) (.cse58 (<= ULTIMATE.start_main_~y~0 15)) (.cse21 (<= ULTIMATE.start_main_~y~0 17)) (.cse22 (<= 17 ULTIMATE.start_main_~y~0)) (.cse71 (<= ULTIMATE.start_main_~y~0 20)) (.cse72 (<= 20 ULTIMATE.start_main_~y~0)) (.cse73 (<= 25 ULTIMATE.start_main_~y~0)) (.cse74 (<= ULTIMATE.start_main_~y~0 25)) (.cse2 (<= ULTIMATE.start_main_~y~0 11)) (.cse3 (<= 11 ULTIMATE.start_main_~y~0)) (.cse25 (<= 43 ULTIMATE.start_main_~y~0)) (.cse26 (<= ULTIMATE.start_main_~y~0 43)) (.cse0 (<= ULTIMATE.start_main_~y~0 47)) (.cse1 (<= 47 ULTIMATE.start_main_~y~0)) (.cse65 (<= ULTIMATE.start_main_~y~0 44)) (.cse66 (<= 44 ULTIMATE.start_main_~y~0)) (.cse23 (<= 40 ULTIMATE.start_main_~y~0)) (.cse24 (<= ULTIMATE.start_main_~y~0 40)) (.cse49 (<= ULTIMATE.start_main_~y~0 49)) (.cse50 (<= 49 ULTIMATE.start_main_~y~0)) (.cse43 (<= 27 ULTIMATE.start_main_~y~0)) (.cse44 (<= ULTIMATE.start_main_~y~0 27)) (.cse45 (<= 30 ULTIMATE.start_main_~y~0)) (.cse46 (<= ULTIMATE.start_main_~y~0 30)) (.cse27 (<= ULTIMATE.start_main_~y~0 48)) (.cse28 (<= 48 ULTIMATE.start_main_~y~0)) (.cse35 (<= 33 ULTIMATE.start_main_~y~0)) (.cse36 (<= ULTIMATE.start_main_~y~0 33)) (.cse33 (<= ULTIMATE.start_main_~y~0 9)) (.cse34 (<= 9 ULTIMATE.start_main_~y~0)) (.cse85 (<= 31 ULTIMATE.start_main_~y~0)) (.cse86 (<= ULTIMATE.start_main_~y~0 31)) (.cse59 (<= ULTIMATE.start_main_~y~0 7)) (.cse60 (<= 7 ULTIMATE.start_main_~y~0)) (.cse91 (<= ULTIMATE.start_main_~y~0 36)) (.cse92 (<= 36 ULTIMATE.start_main_~y~0)) (.cse93 (<= ULTIMATE.start_main_~y~0 13)) (.cse94 (<= 13 ULTIMATE.start_main_~y~0)) (.cse39 (<= 2 ULTIMATE.start_main_~y~0)) (.cse40 (<= ULTIMATE.start_main_~y~0 2)) (.cse19 (<= ULTIMATE.start_main_~y~0 46)) (.cse20 (<= 46 ULTIMATE.start_main_~y~0)) (.cse10 (<= ULTIMATE.start_main_~y~0 34)) (.cse11 (<= 34 ULTIMATE.start_main_~y~0)) (.cse69 (<= 22 ULTIMATE.start_main_~y~0)) (.cse70 (<= ULTIMATE.start_main_~y~0 22)) (.cse75 (<= 37 ULTIMATE.start_main_~y~0)) (.cse76 (<= ULTIMATE.start_main_~y~0 37)) (.cse77 (<= ULTIMATE.start_main_~y~0 10)) (.cse78 (<= 10 ULTIMATE.start_main_~y~0)) (.cse79 (<= ULTIMATE.start_main_~y~0 32)) (.cse80 (<= 32 ULTIMATE.start_main_~y~0)) (.cse37 (<= ULTIMATE.start_main_~y~0 19)) (.cse38 (<= 19 ULTIMATE.start_main_~y~0)) (.cse63 (<= ULTIMATE.start_main_~y~0 4)) (.cse64 (<= 4 ULTIMATE.start_main_~y~0)) (.cse53 (<= ULTIMATE.start_main_~y~0 39)) (.cse54 (<= 39 ULTIMATE.start_main_~y~0)) (.cse14 (= ULTIMATE.start_main_~y~0 0)) (.cse95 (<= 1 ULTIMATE.start_main_~y~0)) (.cse96 (<= ULTIMATE.start_main_~y~0 1)) (.cse55 (<= ULTIMATE.start_main_~y~0 35)) (.cse56 (<= 35 ULTIMATE.start_main_~y~0)) (.cse31 (<= ULTIMATE.start_main_~y~0 28)) (.cse32 (<= 28 ULTIMATE.start_main_~y~0)) (.cse15 (<= ULTIMATE.start_main_~y~0 45)) (.cse16 (<= 45 ULTIMATE.start_main_~y~0)) (.cse88 (<= 18 ULTIMATE.start_main_~y~0)) (.cse87 (<= ULTIMATE.start_main_~y~0 18)) (.cse83 (<= ULTIMATE.start_main_~y~0 8)) (.cse84 (<= 8 ULTIMATE.start_main_~y~0)) (.cse89 (<= ULTIMATE.start_main_~y~0 3)) (.cse90 (<= 3 ULTIMATE.start_main_~y~0)) (.cse97 (<= ULTIMATE.start_main_~y~0 5)) (.cse98 (<= 5 ULTIMATE.start_main_~y~0)) (.cse47 (<= ULTIMATE.start_main_~y~0 24)) (.cse48 (<= 24 ULTIMATE.start_main_~y~0)) (.cse81 (<= 29 ULTIMATE.start_main_~y~0)) (.cse82 (<= ULTIMATE.start_main_~y~0 29))) (or (and (<= 47 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 47) .cse1) (and .cse2 .cse3 (<= ULTIMATE.start_main_~x~0 11) (<= 11 ULTIMATE.start_main_~x~0)) (and .cse4 .cse5 (<= 38 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 38)) (and (<= 94 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 94) .cse6 .cse7) (and .cse8 (<= ULTIMATE.start_main_~x~0 79) .cse9 (<= 79 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 66) (<= 66 ULTIMATE.start_main_~x~0) .cse10 .cse11) (and .cse12 (<= ULTIMATE.start_main_~x~0 88) .cse13 (<= 88 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~x~0 0) .cse14) (and .cse15 .cse16 (<= 45 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 45)) (and .cse17 (<= 16 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 16) .cse18) (and .cse19 (<= ULTIMATE.start_main_~x~0 54) .cse20 (<= 54 ULTIMATE.start_main_~x~0)) (and (<= 17 ULTIMATE.start_main_~x~0) .cse21 .cse22 (<= ULTIMATE.start_main_~x~0 17)) (and (<= ULTIMATE.start_main_~x~0 40) .cse23 (<= 40 ULTIMATE.start_main_~x~0) .cse24) (and .cse25 (<= 57 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 57) .cse26) (and (<= ULTIMATE.start_main_~x~0 12) .cse12 .cse13 (<= 12 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 48) .cse27 .cse28 (<= 48 ULTIMATE.start_main_~x~0)) (and (<= 58 ULTIMATE.start_main_~x~0) .cse29 .cse30 (<= ULTIMATE.start_main_~x~0 58)) (and (<= ULTIMATE.start_main_~x~0 28) (<= 28 ULTIMATE.start_main_~x~0) .cse31 .cse32) (and .cse33 (<= ULTIMATE.start_main_~x~0 9) .cse34 (<= 9 ULTIMATE.start_main_~x~0)) (and (<= 67 ULTIMATE.start_main_~x~0) .cse35 (<= ULTIMATE.start_main_~x~0 67) .cse36) (and (<= 62 ULTIMATE.start_main_~x~0) .cse4 .cse5 (<= ULTIMATE.start_main_~x~0 62)) (and (<= 19 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 19) .cse37 .cse38) (and (<= 98 ULTIMATE.start_main_~x~0) .cse39 (<= ULTIMATE.start_main_~x~0 98) .cse40) (and .cse17 (<= ULTIMATE.start_main_~x~0 84) .cse18 (<= 84 ULTIMATE.start_main_~x~0)) (and (<= 26 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 26) .cse41 .cse42) (and (<= ULTIMATE.start_main_~x~0 27) .cse43 (<= 27 ULTIMATE.start_main_~x~0) .cse44) (and (<= ULTIMATE.start_main_~x~0 6) (<= 6 ULTIMATE.start_main_~x~0) .cse6 .cse7) (and (<= 74 ULTIMATE.start_main_~x~0) .cse41 (<= ULTIMATE.start_main_~x~0 74) .cse42) (and .cse45 (<= ULTIMATE.start_main_~x~0 70) (<= 70 ULTIMATE.start_main_~x~0) .cse46) (and (<= 76 ULTIMATE.start_main_~x~0) .cse47 (<= ULTIMATE.start_main_~x~0 76) .cse48) (and .cse49 .cse50 (<= ULTIMATE.start_main_~x~0 51) (<= 51 ULTIMATE.start_main_~x~0)) (and (<= 23 ULTIMATE.start_main_~x~0) .cse51 (<= ULTIMATE.start_main_~x~0 23) .cse52) (and .cse29 .cse30 (<= ULTIMATE.start_main_~x~0 42) (<= 42 ULTIMATE.start_main_~x~0)) (and (<= 39 ULTIMATE.start_main_~x~0) .cse53 .cse54 (<= ULTIMATE.start_main_~x~0 39)) (and (<= 35 ULTIMATE.start_main_~x~0) .cse55 (<= ULTIMATE.start_main_~x~0 35) .cse56) (and .cse57 (<= 85 ULTIMATE.start_main_~x~0) .cse58 (<= ULTIMATE.start_main_~x~0 85)) (and (<= 21 ULTIMATE.start_main_~x~0) .cse8 (<= ULTIMATE.start_main_~x~0 21) .cse9) (and .cse59 (<= ULTIMATE.start_main_~x~0 7) .cse60 (<= 7 ULTIMATE.start_main_~x~0)) (and (<= 41 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 41) .cse61 .cse62) (and .cse63 (<= ULTIMATE.start_main_~x~0 96) (<= 96 ULTIMATE.start_main_~x~0) .cse64) (and (<= ULTIMATE.start_main_~x~0 56) .cse65 .cse66 (<= 56 ULTIMATE.start_main_~x~0)) (and .cse67 (<= ULTIMATE.start_main_~x~0 86) (<= 86 ULTIMATE.start_main_~x~0) .cse68) (and .cse51 (<= ULTIMATE.start_main_~x~0 77) .cse52 (<= 77 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 59) .cse61 (<= 59 ULTIMATE.start_main_~x~0) .cse62) (and .cse69 (<= ULTIMATE.start_main_~x~0 78) (<= 78 ULTIMATE.start_main_~x~0) .cse70) (and (<= 14 ULTIMATE.start_main_~x~0) .cse67 (<= ULTIMATE.start_main_~x~0 14) .cse68) (and (<= ULTIMATE.start_main_~x~0 15) (<= 15 ULTIMATE.start_main_~x~0) .cse57 .cse58) (and .cse71 (<= 20 ULTIMATE.start_main_~x~0) .cse72 (<= ULTIMATE.start_main_~x~0 20)) (and (<= 75 ULTIMATE.start_main_~x~0) .cse73 .cse74 (<= ULTIMATE.start_main_~x~0 75)) (and (<= ULTIMATE.start_main_~x~0 83) .cse21 (<= 83 ULTIMATE.start_main_~x~0) .cse22) (and .cse71 (<= ULTIMATE.start_main_~x~0 80) .cse72 (<= 80 ULTIMATE.start_main_~x~0)) (and .cse73 .cse74 (<= ULTIMATE.start_main_~x~0 25) (<= 25 ULTIMATE.start_main_~x~0)) (and .cse2 (<= ULTIMATE.start_main_~x~0 89) .cse3 (<= 89 ULTIMATE.start_main_~x~0)) (and .cse25 (<= 43 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 43) .cse26) (and .cse75 (<= 63 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 63) .cse76) (and .cse77 .cse78 (<= ULTIMATE.start_main_~x~0 10) (<= 10 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 32) .cse79 (<= 32 ULTIMATE.start_main_~x~0) .cse80) (and .cse81 .cse82 (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29)) (and (<= ULTIMATE.start_main_~x~0 8) .cse83 .cse84 (<= 8 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 69) .cse85 (<= 69 ULTIMATE.start_main_~x~0) .cse86) (and (<= ULTIMATE.start_main_~x~0 82) .cse87 .cse88 (<= 82 ULTIMATE.start_main_~x~0)) (and .cse0 (<= 53 ULTIMATE.start_main_~x~0) .cse1 (<= ULTIMATE.start_main_~x~0 53)) (and (<= 44 ULTIMATE.start_main_~x~0) .cse65 .cse66 (<= ULTIMATE.start_main_~x~0 44)) (and (<= ULTIMATE.start_main_~x~0 60) .cse23 (<= 60 ULTIMATE.start_main_~x~0) .cse24) (and .cse49 (<= ULTIMATE.start_main_~x~0 49) .cse50 (<= 49 ULTIMATE.start_main_~x~0)) (and (<= 3 ULTIMATE.start_main_~x~0) .cse89 (<= ULTIMATE.start_main_~x~0 3) .cse90) (and (<= ULTIMATE.start_main_~x~0 36) (<= 36 ULTIMATE.start_main_~x~0) .cse91 .cse92) (and .cse43 .cse44 (<= ULTIMATE.start_main_~x~0 73) (<= 73 ULTIMATE.start_main_~x~0)) (and .cse45 (<= ULTIMATE.start_main_~x~0 30) .cse46 (<= 30 ULTIMATE.start_main_~x~0)) (and (<= 52 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 52) .cse27 .cse28) (and (<= ULTIMATE.start_main_~x~0 87) .cse93 .cse94 (<= 87 ULTIMATE.start_main_~x~0)) (and (<= 33 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 33) .cse35 .cse36) (and (<= 91 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 91) .cse33 .cse34) (and .cse95 .cse96 (<= ULTIMATE.start_main_~x~0 99) (<= 99 ULTIMATE.start_main_~x~0)) (and .cse85 (<= 31 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 31) .cse86) (and .cse59 .cse60 (<= 93 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 93)) (and (<= ULTIMATE.start_main_~x~0 64) .cse91 .cse92 (<= 64 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 13) (<= 13 ULTIMATE.start_main_~x~0) .cse93 .cse94) (and (<= 2 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2) .cse39 .cse40) (and .cse19 (<= 46 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 46) .cse20) (and (<= ULTIMATE.start_main_~x~0 34) .cse10 (<= 34 ULTIMATE.start_main_~x~0) .cse11) (and .cse69 (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22) .cse70) (and .cse75 (<= ULTIMATE.start_main_~x~0 37) (<= 37 ULTIMATE.start_main_~x~0) .cse76) (and (<= 90 ULTIMATE.start_main_~x~0) .cse77 (<= ULTIMATE.start_main_~x~0 90) .cse78) (and .cse79 .cse80 (<= ULTIMATE.start_main_~x~0 68) (<= 68 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 50) (<= ULTIMATE.start_main_~y~0 50) (<= 50 ULTIMATE.start_main_~x~0) (<= 50 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~x~0 81) .cse37 .cse38 (<= 81 ULTIMATE.start_main_~x~0)) (and (<= 4 ULTIMATE.start_main_~x~0) .cse63 (<= ULTIMATE.start_main_~x~0 4) .cse64) (and (<= ULTIMATE.start_main_~x~0 61) .cse53 .cse54 (<= 61 ULTIMATE.start_main_~x~0)) (and (< 99 ULTIMATE.start_main_~x~0) .cse14 (<= ULTIMATE.start_main_~x~0 100)) (and .cse95 (<= ULTIMATE.start_main_~x~0 1) .cse96 (<= 1 ULTIMATE.start_main_~x~0)) (and .cse55 .cse56 (<= 65 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 65)) (and (<= 72 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 72) .cse31 .cse32) (and (<= 5 ULTIMATE.start_main_~x~0) .cse97 .cse98 (<= ULTIMATE.start_main_~x~0 5)) (and (<= 55 ULTIMATE.start_main_~x~0) .cse15 .cse16 (<= ULTIMATE.start_main_~x~0 55)) (and (<= 18 ULTIMATE.start_main_~x~0) .cse88 .cse87 (<= ULTIMATE.start_main_~x~0 18)) (and (<= ULTIMATE.start_main_~x~0 92) (<= 92 ULTIMATE.start_main_~x~0) .cse83 .cse84) (and (<= 97 ULTIMATE.start_main_~x~0) .cse89 .cse90 (<= ULTIMATE.start_main_~x~0 97)) (and (<= 95 ULTIMATE.start_main_~x~0) .cse97 .cse98 (<= ULTIMATE.start_main_~x~0 95)) (and (<= ULTIMATE.start_main_~x~0 24) .cse47 (<= 24 ULTIMATE.start_main_~x~0) .cse48) (and (<= ULTIMATE.start_main_~x~0 71) (<= 71 ULTIMATE.start_main_~x~0) .cse81 .cse82))) [2020-11-29 19:58:13,675 INFO L274 CegarLoopResult]: For program point L28-3(lines 28 36) no Hoare annotation was computed. [2020-11-29 19:58:13,675 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 19:58:13,675 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-29 19:58:13,676 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-29 19:58:13,676 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 19:58:13,676 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 19:58:13,676 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-29 19:58:13,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:58:13 BoogieIcfgContainer [2020-11-29 19:58:13,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:58:13,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:58:13,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:58:13,744 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:58:13,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:54:39" (3/4) ... [2020-11-29 19:58:13,748 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:58:13,761 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 19:58:13,764 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:58:13,765 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:58:13,765 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:58:13,819 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8cf45938-1d2a-4d48-a643-64a54e7c17a4/bin/uautomizer/witness.graphml [2020-11-29 19:58:13,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:58:13,821 INFO L168 Benchmark]: Toolchain (without parser) took 215522.82 ms. Allocated memory was 88.1 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 52.9 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 352.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:13,821 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory is still 68.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:13,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.85 ms. Allocated memory is still 88.1 MB. Free memory was 52.7 MB in the beginning and 65.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:13,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.89 ms. Allocated memory is still 88.1 MB. Free memory was 65.8 MB in the beginning and 64.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:13,822 INFO L168 Benchmark]: Boogie Preprocessor took 24.63 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 63.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:13,823 INFO L168 Benchmark]: RCFGBuilder took 359.87 ms. Allocated memory is still 88.1 MB. Free memory was 63.3 MB in the beginning and 52.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:13,823 INFO L168 Benchmark]: TraceAbstraction took 214620.45 ms. Allocated memory was 88.1 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 52.0 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2020-11-29 19:58:13,824 INFO L168 Benchmark]: Witness Printer took 76.20 ms. Allocated memory is still 1.7 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:13,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory is still 68.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.85 ms. Allocated memory is still 88.1 MB. Free memory was 52.7 MB in the beginning and 65.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.89 ms. Allocated memory is still 88.1 MB. Free memory was 65.8 MB in the beginning and 64.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.63 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 63.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.87 ms. Allocated memory is still 88.1 MB. Free memory was 63.3 MB in the beginning and 52.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 214620.45 ms. Allocated memory was 88.1 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 52.0 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. * Witness Printer took 76.20 ms. Allocated memory is still 1.7 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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: 28]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((47 <= x && y <= 47) && x <= 47) && 47 <= y) || (((y <= 11 && 11 <= y) && x <= 11) && 11 <= x)) || (((y <= 38 && 38 <= y) && 38 <= x) && x <= 38)) || (((94 <= x && x <= 94) && y <= 6) && 6 <= y)) || (((y <= 21 && x <= 79) && 21 <= y) && 79 <= x)) || (((x <= 66 && 66 <= x) && y <= 34) && 34 <= y)) || (((12 <= y && x <= 88) && y <= 12) && 88 <= x)) || (x == 0 && y == 0)) || (((y <= 45 && 45 <= y) && 45 <= x) && x <= 45)) || (((16 <= y && 16 <= x) && x <= 16) && y <= 16)) || (((y <= 46 && x <= 54) && 46 <= y) && 54 <= x)) || (((17 <= x && y <= 17) && 17 <= y) && x <= 17)) || (((x <= 40 && 40 <= y) && 40 <= x) && y <= 40)) || (((43 <= y && 57 <= x) && x <= 57) && y <= 43)) || (((x <= 12 && 12 <= y) && y <= 12) && 12 <= x)) || (((x <= 48 && y <= 48) && 48 <= y) && 48 <= x)) || (((58 <= x && 42 <= y) && y <= 42) && x <= 58)) || (((x <= 28 && 28 <= x) && y <= 28) && 28 <= y)) || (((y <= 9 && x <= 9) && 9 <= y) && 9 <= x)) || (((67 <= x && 33 <= y) && x <= 67) && y <= 33)) || (((62 <= x && y <= 38) && 38 <= y) && x <= 62)) || (((19 <= x && x <= 19) && y <= 19) && 19 <= y)) || (((98 <= x && 2 <= y) && x <= 98) && y <= 2)) || (((16 <= y && x <= 84) && y <= 16) && 84 <= x)) || (((26 <= x && x <= 26) && y <= 26) && 26 <= y)) || (((x <= 27 && 27 <= y) && 27 <= x) && y <= 27)) || (((x <= 6 && 6 <= x) && y <= 6) && 6 <= y)) || (((74 <= x && y <= 26) && x <= 74) && 26 <= y)) || (((30 <= y && x <= 70) && 70 <= x) && y <= 30)) || (((76 <= x && y <= 24) && x <= 76) && 24 <= y)) || (((y <= 49 && 49 <= y) && x <= 51) && 51 <= x)) || (((23 <= x && 23 <= y) && x <= 23) && y <= 23)) || (((42 <= y && y <= 42) && x <= 42) && 42 <= x)) || (((39 <= x && y <= 39) && 39 <= y) && x <= 39)) || (((35 <= x && y <= 35) && x <= 35) && 35 <= y)) || (((15 <= y && 85 <= x) && y <= 15) && x <= 85)) || (((21 <= x && y <= 21) && x <= 21) && 21 <= y)) || (((y <= 7 && x <= 7) && 7 <= y) && 7 <= x)) || (((41 <= x && x <= 41) && y <= 41) && 41 <= y)) || (((y <= 4 && x <= 96) && 96 <= x) && 4 <= y)) || (((x <= 56 && y <= 44) && 44 <= y) && 56 <= x)) || (((14 <= y && x <= 86) && 86 <= x) && y <= 14)) || (((23 <= y && x <= 77) && y <= 23) && 77 <= x)) || (((x <= 59 && y <= 41) && 59 <= x) && 41 <= y)) || (((22 <= y && x <= 78) && 78 <= x) && y <= 22)) || (((14 <= x && 14 <= y) && x <= 14) && y <= 14)) || (((x <= 15 && 15 <= x) && 15 <= y) && y <= 15)) || (((y <= 20 && 20 <= x) && 20 <= y) && x <= 20)) || (((75 <= x && 25 <= y) && y <= 25) && x <= 75)) || (((x <= 83 && y <= 17) && 83 <= x) && 17 <= y)) || (((y <= 20 && x <= 80) && 20 <= y) && 80 <= x)) || (((25 <= y && y <= 25) && x <= 25) && 25 <= x)) || (((y <= 11 && x <= 89) && 11 <= y) && 89 <= x)) || (((43 <= y && 43 <= x) && x <= 43) && y <= 43)) || (((37 <= y && 63 <= x) && x <= 63) && y <= 37)) || (((y <= 10 && 10 <= y) && x <= 10) && 10 <= x)) || (((x <= 32 && y <= 32) && 32 <= x) && 32 <= y)) || (((29 <= y && y <= 29) && 29 <= x) && x <= 29)) || (((x <= 8 && y <= 8) && 8 <= y) && 8 <= x)) || (((x <= 69 && 31 <= y) && 69 <= x) && y <= 31)) || (((x <= 82 && y <= 18) && 18 <= y) && 82 <= x)) || (((y <= 47 && 53 <= x) && 47 <= y) && x <= 53)) || (((44 <= x && y <= 44) && 44 <= y) && x <= 44)) || (((x <= 60 && 40 <= y) && 60 <= x) && y <= 40)) || (((y <= 49 && x <= 49) && 49 <= y) && 49 <= x)) || (((3 <= x && y <= 3) && x <= 3) && 3 <= y)) || (((x <= 36 && 36 <= x) && y <= 36) && 36 <= y)) || (((27 <= y && y <= 27) && x <= 73) && 73 <= x)) || (((30 <= y && x <= 30) && y <= 30) && 30 <= x)) || (((52 <= x && x <= 52) && y <= 48) && 48 <= y)) || (((x <= 87 && y <= 13) && 13 <= y) && 87 <= x)) || (((33 <= x && x <= 33) && 33 <= y) && y <= 33)) || (((91 <= x && x <= 91) && y <= 9) && 9 <= y)) || (((1 <= y && y <= 1) && x <= 99) && 99 <= x)) || (((31 <= y && 31 <= x) && x <= 31) && y <= 31)) || (((y <= 7 && 7 <= y) && 93 <= x) && x <= 93)) || (((x <= 64 && y <= 36) && 36 <= y) && 64 <= x)) || (((x <= 13 && 13 <= x) && y <= 13) && 13 <= y)) || (((2 <= x && x <= 2) && 2 <= y) && y <= 2)) || (((y <= 46 && 46 <= x) && x <= 46) && 46 <= y)) || (((x <= 34 && y <= 34) && 34 <= x) && 34 <= y)) || (((22 <= y && 22 <= x) && x <= 22) && y <= 22)) || (((37 <= y && x <= 37) && 37 <= x) && y <= 37)) || (((90 <= x && y <= 10) && x <= 90) && 10 <= y)) || (((y <= 32 && 32 <= y) && x <= 68) && 68 <= x)) || (((x <= 50 && y <= 50) && 50 <= x) && 50 <= y)) || (((x <= 81 && y <= 19) && 19 <= y) && 81 <= x)) || (((4 <= x && y <= 4) && x <= 4) && 4 <= y)) || (((x <= 61 && y <= 39) && 39 <= y) && 61 <= x)) || ((99 < x && y == 0) && x <= 100)) || (((1 <= y && x <= 1) && y <= 1) && 1 <= x)) || (((y <= 35 && 35 <= y) && 65 <= x) && x <= 65)) || (((72 <= x && x <= 72) && y <= 28) && 28 <= y)) || (((5 <= x && y <= 5) && 5 <= y) && x <= 5)) || (((55 <= x && y <= 45) && 45 <= y) && x <= 55)) || (((18 <= x && 18 <= y) && y <= 18) && x <= 18)) || (((x <= 92 && 92 <= x) && y <= 8) && 8 <= y)) || (((97 <= x && y <= 3) && 3 <= y) && x <= 97)) || (((95 <= x && y <= 5) && 5 <= y) && x <= 95)) || (((x <= 24 && y <= 24) && 24 <= x) && 24 <= y)) || (((x <= 71 && 71 <= x) && 29 <= y) && y <= 29) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 129.3s, OverallIterations: 52, TraceHistogramMax: 103, AutomataDifference: 45.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 85.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1194 SDtfs, 1600 SDslu, 42888 SDs, 0 SdLazy, 33124 SolverSat, 2267 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10622 GetRequests, 8129 SyntacticMatches, 2 SemanticMatches, 2491 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54583 ImplicationChecksByTransitivity, 67.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4188occurred in iteration=51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 52 MinimizatonAttempts, 3870 StatesRemovedByMinimization, 48 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 106 NumberOfFragments, 1307 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1324927639 FormulaSimplificationTreeSizeReduction, 21.5s HoareSimplificationTime, 3 FomulaSimplificationsInter, 110448078 FormulaSimplificationTreeSizeReductionInter, 63.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 5.2s SatisfiabilityAnalysisTime, 58.9s InterpolantComputationTime, 16680 NumberOfCodeBlocks, 16677 NumberOfCodeBlocksAsserted, 1417 NumberOfCheckSat, 16579 ConstructedInterpolants, 0 QuantifiedInterpolants, 8473870 SizeOfPredicates, 51 NumberOfNonLiveVariables, 20384 ConjunctsInSsa, 1894 ConjunctsInUnsatCore, 101 InterpolantComputations, 4 PerfectInterpolantSequences, 385827/564396 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...