./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash becf68b1b41bf8f9c75117f82605e436bc8d5a41 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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 22:55:10,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:55:10,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:55:10,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:55:10,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:55:10,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:55:10,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:55:10,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:55:10,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:55:10,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:55:10,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:55:10,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:55:10,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:55:10,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:55:10,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:55:10,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:55:10,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:55:10,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:55:10,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:55:10,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:55:10,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:55:10,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:55:10,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:55:10,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:55:10,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:55:10,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:55:10,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:55:10,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:55:10,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:55:10,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:55:10,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:55:10,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:55:10,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:55:11,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:55:11,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:55:11,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:55:11,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:55:11,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:55:11,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:55:11,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:55:11,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:55:11,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 22:55:11,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:55:11,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:55:11,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:55:11,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:55:11,079 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:55:11,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:55:11,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:55:11,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:55:11,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:55:11,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:55:11,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:55:11,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:55:11,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:55:11,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:55:11,085 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 22:55:11,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:55:11,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:55:11,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:55:11,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:55:11,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:55:11,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:55:11,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:55:11,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:55:11,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:55:11,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:55:11,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:55:11,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:55:11,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:55:11,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:55:11,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:55:11,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:55:11,090 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_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> becf68b1b41bf8f9c75117f82605e436bc8d5a41 [2020-11-29 22:55:11,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:55:11,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:55:11,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:55:11,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:55:11,501 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:55:11,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2020-11-29 22:55:11,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/data/cc618e430/3b7fb6f67a86452ea7dcc1bf29f7d678/FLAGa9388e966 [2020-11-29 22:55:12,206 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:55:12,207 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2020-11-29 22:55:12,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/data/cc618e430/3b7fb6f67a86452ea7dcc1bf29f7d678/FLAGa9388e966 [2020-11-29 22:55:12,582 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/data/cc618e430/3b7fb6f67a86452ea7dcc1bf29f7d678 [2020-11-29 22:55:12,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:55:12,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:55:12,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:55:12,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:55:12,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:55:12,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f655e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12, skipping insertion in model container [2020-11-29 22:55:12,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:55:12,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:55:12,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:55:12,844 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:55:12,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:55:12,878 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:55:12,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12 WrapperNode [2020-11-29 22:55:12,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:55:12,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:55:12,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:55:12,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:55:12,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:55:12,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:55:12,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:55:12,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:55:12,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... [2020-11-29 22:55:12,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:55:12,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:55:12,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:55:12,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:55:12,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:55:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:55:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:55:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:55:13,354 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:55:13,354 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 22:55:13,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:55:13 BoogieIcfgContainer [2020-11-29 22:55:13,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:55:13,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:55:13,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:55:13,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:55:13,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:55:12" (1/3) ... [2020-11-29 22:55:13,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa558cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:55:13, skipping insertion in model container [2020-11-29 22:55:13,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:55:12" (2/3) ... [2020-11-29 22:55:13,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa558cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:55:13, skipping insertion in model container [2020-11-29 22:55:13,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:55:13" (3/3) ... [2020-11-29 22:55:13,368 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2020-11-29 22:55:13,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:55:13,386 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 22:55:13,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 22:55:13,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:55:13,475 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:55:13,475 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:55:13,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:55:13,476 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:55:13,476 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:55:13,476 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:55:13,476 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:55:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 22:55:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 22:55:13,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:13,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 22:55:13,526 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:13,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:13,533 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2020-11-29 22:55:13,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:13,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016472823] [2020-11-29 22:55:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:13,825 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 22:55:13,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016472823] [2020-11-29 22:55:13,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:55:13,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:55:13,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39897996] [2020-11-29 22:55:13,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:55:13,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:13,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:55:13,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:55:13,862 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-11-29 22:55:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:13,960 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-11-29 22:55:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:55:13,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 22:55:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:13,982 INFO L225 Difference]: With dead ends: 38 [2020-11-29 22:55:13,985 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 22:55:13,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:55:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 22:55:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 22:55:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 22:55:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-29 22:55:14,019 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2020-11-29 22:55:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:14,019 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-29 22:55:14,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:55:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-29 22:55:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:55:14,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:14,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:55:14,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:55:14,021 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2020-11-29 22:55:14,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:14,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651539139] [2020-11-29 22:55:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:14,100 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 22:55:14,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651539139] [2020-11-29 22:55:14,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:55:14,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:55:14,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190066516] [2020-11-29 22:55:14,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:55:14,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:14,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:55:14,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:55:14,105 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-29 22:55:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:14,164 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-29 22:55:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:55:14,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 22:55:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:14,166 INFO L225 Difference]: With dead ends: 19 [2020-11-29 22:55:14,166 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 22:55:14,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:55:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 22:55:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-11-29 22:55:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 22:55:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-29 22:55:14,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-29 22:55:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:14,173 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-29 22:55:14,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:55:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-29 22:55:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:55:14,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:14,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:55:14,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:55:14,175 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:14,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:14,176 INFO L82 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2020-11-29 22:55:14,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:14,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638154505] [2020-11-29 22:55:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:14,247 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 22:55:14,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638154505] [2020-11-29 22:55:14,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:55:14,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:55:14,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239558203] [2020-11-29 22:55:14,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:55:14,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:14,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:55:14,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:55:14,251 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-11-29 22:55:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:14,310 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 22:55:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:55:14,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 22:55:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:14,312 INFO L225 Difference]: With dead ends: 16 [2020-11-29 22:55:14,312 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 22:55:14,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:55:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 22:55:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 22:55:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 22:55:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-29 22:55:14,318 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-11-29 22:55:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:14,318 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-29 22:55:14,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:55:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-29 22:55:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:55:14,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:14,319 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:55:14,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:55:14,320 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:14,321 INFO L82 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2020-11-29 22:55:14,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:14,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658619826] [2020-11-29 22:55:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658619826] [2020-11-29 22:55:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055948061] [2020-11-29 22:55:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:14,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:55:14,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:14,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:14,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-11-29 22:55:14,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166299478] [2020-11-29 22:55:14,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:55:14,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:55:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:55:14,509 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-11-29 22:55:14,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:14,596 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-11-29 22:55:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:55:14,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 22:55:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:14,598 INFO L225 Difference]: With dead ends: 20 [2020-11-29 22:55:14,599 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 22:55:14,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 22:55:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 22:55:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-29 22:55:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 22:55:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-29 22:55:14,604 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2020-11-29 22:55:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:14,605 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-29 22:55:14,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:55:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-29 22:55:14,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:55:14,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:14,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:55:14,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:14,830 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:14,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2020-11-29 22:55:14,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:14,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347547022] [2020-11-29 22:55:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:14,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347547022] [2020-11-29 22:55:14,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320225204] [2020-11-29 22:55:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:14,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:55:14,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:14,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:55:14,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2020-11-29 22:55:14,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880877858] [2020-11-29 22:55:14,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:55:14,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:14,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:55:14,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:55:14,982 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2020-11-29 22:55:15,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:15,005 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-29 22:55:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:55:15,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 22:55:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:15,007 INFO L225 Difference]: With dead ends: 18 [2020-11-29 22:55:15,007 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 22:55:15,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:55:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 22:55:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 22:55:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 22:55:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-29 22:55:15,012 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-11-29 22:55:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:15,013 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-29 22:55:15,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:55:15,014 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-29 22:55:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:55:15,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:15,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 22:55:15,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:15,230 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:15,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2020-11-29 22:55:15,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:15,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42919969] [2020-11-29 22:55:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:55:15,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42919969] [2020-11-29 22:55:15,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:55:15,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:55:15,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367452447] [2020-11-29 22:55:15,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:55:15,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:15,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:55:15,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:55:15,310 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2020-11-29 22:55:15,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:15,378 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-29 22:55:15,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:55:15,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:55:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:15,380 INFO L225 Difference]: With dead ends: 17 [2020-11-29 22:55:15,380 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 22:55:15,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:55:15,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 22:55:15,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 22:55:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 22:55:15,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-29 22:55:15,385 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-11-29 22:55:15,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:15,386 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-29 22:55:15,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:55:15,386 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-29 22:55:15,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:55:15,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:15,387 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 22:55:15,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:55:15,388 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:15,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:15,389 INFO L82 PathProgramCache]: Analyzing trace with hash 487275813, now seen corresponding path program 2 times [2020-11-29 22:55:15,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:15,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326620462] [2020-11-29 22:55:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:15,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326620462] [2020-11-29 22:55:15,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449754242] [2020-11-29 22:55:15,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:15,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:55:15,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:15,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:55:15,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:15,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:15,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-29 22:55:15,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671421530] [2020-11-29 22:55:15,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:55:15,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:15,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:55:15,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:55:15,579 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-11-29 22:55:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:15,653 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-29 22:55:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:55:15,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 22:55:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:15,656 INFO L225 Difference]: With dead ends: 23 [2020-11-29 22:55:15,656 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 22:55:15,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:55:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 22:55:15,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-29 22:55:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 22:55:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-11-29 22:55:15,665 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2020-11-29 22:55:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:15,666 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-11-29 22:55:15,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:55:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-11-29 22:55:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:55:15,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:15,668 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-29 22:55:15,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:15,894 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:15,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:15,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1418773263, now seen corresponding path program 3 times [2020-11-29 22:55:15,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:15,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748803801] [2020-11-29 22:55:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:15,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748803801] [2020-11-29 22:55:15,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537746062] [2020-11-29 22:55:15,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:16,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 22:55:16,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:16,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:55:16,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:16,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:16,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 22:55:16,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827158859] [2020-11-29 22:55:16,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:55:16,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:16,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:55:16,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:55:16,089 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-11-29 22:55:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:16,137 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-29 22:55:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:55:16,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-29 22:55:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:16,140 INFO L225 Difference]: With dead ends: 28 [2020-11-29 22:55:16,141 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 22:55:16,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:55:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 22:55:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-11-29 22:55:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 22:55:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-29 22:55:16,149 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2020-11-29 22:55:16,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:16,150 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-29 22:55:16,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:55:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-29 22:55:16,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:55:16,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:16,151 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2020-11-29 22:55:16,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:16,370 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 4 times [2020-11-29 22:55:16,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:16,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883530905] [2020-11-29 22:55:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:16,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883530905] [2020-11-29 22:55:16,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430215198] [2020-11-29 22:55:16,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:16,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:55:16,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:16,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:55:16,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:16,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:16,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 22:55:16,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058599529] [2020-11-29 22:55:16,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:55:16,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:16,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:55:16,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:55:16,611 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 8 states. [2020-11-29 22:55:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:16,654 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-11-29 22:55:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:55:16,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-29 22:55:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:16,657 INFO L225 Difference]: With dead ends: 33 [2020-11-29 22:55:16,657 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 22:55:16,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 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 22:55:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 22:55:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-29 22:55:16,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:55:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-29 22:55:16,663 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-11-29 22:55:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:16,664 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-29 22:55:16,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:55:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-29 22:55:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 22:55:16,665 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:16,668 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1] [2020-11-29 22:55:16,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:16,869 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:16,870 INFO L82 PathProgramCache]: Analyzing trace with hash -977343119, now seen corresponding path program 5 times [2020-11-29 22:55:16,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:16,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317519042] [2020-11-29 22:55:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:17,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317519042] [2020-11-29 22:55:17,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370067279] [2020-11-29 22:55:17,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:17,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 22:55:17,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:17,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:55:17,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:17,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:17,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-29 22:55:17,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649933292] [2020-11-29 22:55:17,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:55:17,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:17,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:55:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:55:17,140 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-11-29 22:55:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:17,197 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-11-29 22:55:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:55:17,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-11-29 22:55:17,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:17,199 INFO L225 Difference]: With dead ends: 38 [2020-11-29 22:55:17,199 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 22:55:17,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 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 22:55:17,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 22:55:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-29 22:55:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 22:55:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-29 22:55:17,211 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2020-11-29 22:55:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:17,213 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-29 22:55:17,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:55:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-29 22:55:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 22:55:17,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:17,215 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2020-11-29 22:55:17,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:17,430 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:17,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1362746405, now seen corresponding path program 6 times [2020-11-29 22:55:17,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:17,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012879453] [2020-11-29 22:55:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:17,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012879453] [2020-11-29 22:55:17,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291148402] [2020-11-29 22:55:17,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:17,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-29 22:55:17,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:17,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:55:17,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:17,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:17,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-29 22:55:17,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114815494] [2020-11-29 22:55:17,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:55:17,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:17,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:55:17,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:55:17,713 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 10 states. [2020-11-29 22:55:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:17,766 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-11-29 22:55:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:55:17,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-11-29 22:55:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:17,769 INFO L225 Difference]: With dead ends: 43 [2020-11-29 22:55:17,769 INFO L226 Difference]: Without dead ends: 42 [2020-11-29 22:55:17,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:55:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-29 22:55:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-11-29 22:55:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 22:55:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-29 22:55:17,785 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2020-11-29 22:55:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:17,790 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-29 22:55:17,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:55:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-29 22:55:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 22:55:17,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:17,792 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1] [2020-11-29 22:55:18,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:18,014 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:18,015 INFO L82 PathProgramCache]: Analyzing trace with hash 915144177, now seen corresponding path program 7 times [2020-11-29 22:55:18,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:18,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296969580] [2020-11-29 22:55:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:18,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296969580] [2020-11-29 22:55:18,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000894172] [2020-11-29 22:55:18,169 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:18,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:55:18,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:18,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:18,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-29 22:55:18,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943788620] [2020-11-29 22:55:18,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:55:18,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:18,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:55:18,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:55:18,268 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-11-29 22:55:18,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:18,320 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-11-29 22:55:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:55:18,320 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-11-29 22:55:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:18,321 INFO L225 Difference]: With dead ends: 48 [2020-11-29 22:55:18,321 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 22:55:18,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 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 22:55:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 22:55:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-11-29 22:55:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 22:55:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-11-29 22:55:18,327 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2020-11-29 22:55:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:18,327 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-11-29 22:55:18,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:55:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-11-29 22:55:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 22:55:18,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:18,329 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2020-11-29 22:55:18,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 22:55:18,542 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:18,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:18,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2138891355, now seen corresponding path program 8 times [2020-11-29 22:55:18,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:18,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059898234] [2020-11-29 22:55:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:18,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059898234] [2020-11-29 22:55:18,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7727520] [2020-11-29 22:55:18,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:18,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:55:18,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:18,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:55:18,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:18,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:18,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-29 22:55:18,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077427171] [2020-11-29 22:55:18,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:55:18,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:18,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:55:18,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:55:18,789 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 12 states. [2020-11-29 22:55:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:18,849 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-11-29 22:55:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:55:18,849 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-11-29 22:55:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:18,850 INFO L225 Difference]: With dead ends: 53 [2020-11-29 22:55:18,850 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 22:55:18,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:55:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 22:55:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-11-29 22:55:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 22:55:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-11-29 22:55:18,856 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2020-11-29 22:55:18,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:18,856 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-11-29 22:55:18,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:55:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-11-29 22:55:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-29 22:55:18,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:18,861 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1] [2020-11-29 22:55:19,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:19,081 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:19,082 INFO L82 PathProgramCache]: Analyzing trace with hash -2002882959, now seen corresponding path program 9 times [2020-11-29 22:55:19,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:19,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964993775] [2020-11-29 22:55:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:19,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964993775] [2020-11-29 22:55:19,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770126553] [2020-11-29 22:55:19,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:19,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-29 22:55:19,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:19,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:55:19,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:19,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:19,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-29 22:55:19,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744827337] [2020-11-29 22:55:19,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:55:19,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:19,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:55:19,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:55:19,363 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 13 states. [2020-11-29 22:55:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:19,446 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-11-29 22:55:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:55:19,448 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-11-29 22:55:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:19,449 INFO L225 Difference]: With dead ends: 58 [2020-11-29 22:55:19,449 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 22:55:19,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:55:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 22:55:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-11-29 22:55:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 22:55:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-11-29 22:55:19,466 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2020-11-29 22:55:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:19,467 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-11-29 22:55:19,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:55:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-11-29 22:55:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-29 22:55:19,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:19,472 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2020-11-29 22:55:19,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:19,690 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:19,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 10 times [2020-11-29 22:55:19,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:19,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363307417] [2020-11-29 22:55:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:19,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363307417] [2020-11-29 22:55:19,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663837060] [2020-11-29 22:55:19,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:19,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:55:19,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:19,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:55:19,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:20,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:20,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-29 22:55:20,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748222454] [2020-11-29 22:55:20,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:55:20,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:20,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:55:20,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:55:20,028 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 14 states. [2020-11-29 22:55:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:20,123 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-11-29 22:55:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:55:20,124 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-11-29 22:55:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:20,124 INFO L225 Difference]: With dead ends: 63 [2020-11-29 22:55:20,125 INFO L226 Difference]: Without dead ends: 62 [2020-11-29 22:55:20,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:55:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-29 22:55:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-11-29 22:55:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 22:55:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-11-29 22:55:20,132 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2020-11-29 22:55:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:20,132 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-11-29 22:55:20,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:55:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-11-29 22:55:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 22:55:20,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:20,134 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1] [2020-11-29 22:55:20,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 22:55:20,350 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:20,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:20,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1824407281, now seen corresponding path program 11 times [2020-11-29 22:55:20,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:20,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95657028] [2020-11-29 22:55:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:20,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95657028] [2020-11-29 22:55:20,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443237133] [2020-11-29 22:55:20,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:20,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-29 22:55:20,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:20,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:55:20,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:20,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:20,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-29 22:55:20,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260612409] [2020-11-29 22:55:20,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 22:55:20,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:20,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 22:55:20,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:55:20,676 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 15 states. [2020-11-29 22:55:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:20,746 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-29 22:55:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 22:55:20,747 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-11-29 22:55:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:20,747 INFO L225 Difference]: With dead ends: 68 [2020-11-29 22:55:20,747 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 22:55:20,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:55:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 22:55:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-11-29 22:55:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 22:55:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2020-11-29 22:55:20,753 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2020-11-29 22:55:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:20,754 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2020-11-29 22:55:20,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 22:55:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2020-11-29 22:55:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-29 22:55:20,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:20,755 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1] [2020-11-29 22:55:20,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 22:55:20,966 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1150384805, now seen corresponding path program 12 times [2020-11-29 22:55:20,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:20,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832224516] [2020-11-29 22:55:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:21,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832224516] [2020-11-29 22:55:21,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863761730] [2020-11-29 22:55:21,311 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:21,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 22:55:21,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:21,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 22:55:21,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:21,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:21,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-29 22:55:21,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477450959] [2020-11-29 22:55:21,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 22:55:21,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 22:55:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:55:21,478 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 16 states. [2020-11-29 22:55:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:21,569 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-11-29 22:55:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 22:55:21,570 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-11-29 22:55:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:21,571 INFO L225 Difference]: With dead ends: 73 [2020-11-29 22:55:21,571 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 22:55:21,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:55:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 22:55:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-11-29 22:55:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 22:55:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-11-29 22:55:21,579 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2020-11-29 22:55:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:21,579 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-11-29 22:55:21,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 22:55:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-11-29 22:55:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-29 22:55:21,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:21,581 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1] [2020-11-29 22:55:21,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 22:55:21,797 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:21,798 INFO L82 PathProgramCache]: Analyzing trace with hash 968060785, now seen corresponding path program 13 times [2020-11-29 22:55:21,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:21,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374810177] [2020-11-29 22:55:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:22,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374810177] [2020-11-29 22:55:22,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623514894] [2020-11-29 22:55:22,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:22,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 22:55:22,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:22,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:22,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-29 22:55:22,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432408000] [2020-11-29 22:55:22,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 22:55:22,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:22,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 22:55:22,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:55:22,230 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 17 states. [2020-11-29 22:55:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:22,342 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-11-29 22:55:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 22:55:22,342 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-11-29 22:55:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:22,343 INFO L225 Difference]: With dead ends: 78 [2020-11-29 22:55:22,343 INFO L226 Difference]: Without dead ends: 77 [2020-11-29 22:55:22,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 69 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 22:55:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-29 22:55:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-11-29 22:55:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-29 22:55:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-11-29 22:55:22,351 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2020-11-29 22:55:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:22,351 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-11-29 22:55:22,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 22:55:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-11-29 22:55:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 22:55:22,353 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:22,353 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2020-11-29 22:55:22,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:22,566 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:22,566 INFO L82 PathProgramCache]: Analyzing trace with hash 197564965, now seen corresponding path program 14 times [2020-11-29 22:55:22,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:22,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872876918] [2020-11-29 22:55:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:22,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872876918] [2020-11-29 22:55:22,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354439146] [2020-11-29 22:55:22,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:22,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:55:22,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:22,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:55:22,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:22,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:22,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-29 22:55:22,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392985811] [2020-11-29 22:55:22,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 22:55:22,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:22,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 22:55:22,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:55:22,985 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 18 states. [2020-11-29 22:55:23,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:23,095 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2020-11-29 22:55:23,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 22:55:23,095 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75 [2020-11-29 22:55:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:23,096 INFO L225 Difference]: With dead ends: 83 [2020-11-29 22:55:23,096 INFO L226 Difference]: Without dead ends: 82 [2020-11-29 22:55:23,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:55:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-29 22:55:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-11-29 22:55:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-29 22:55:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-11-29 22:55:23,104 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2020-11-29 22:55:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:23,105 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-11-29 22:55:23,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 22:55:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-11-29 22:55:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 22:55:23,106 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:23,106 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1] [2020-11-29 22:55:23,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:23,329 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:23,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1816526833, now seen corresponding path program 15 times [2020-11-29 22:55:23,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:23,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481424383] [2020-11-29 22:55:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:23,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481424383] [2020-11-29 22:55:23,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730085325] [2020-11-29 22:55:23,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:23,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-29 22:55:23,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:23,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 22:55:23,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:23,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:23,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-29 22:55:23,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773806941] [2020-11-29 22:55:23,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 22:55:23,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 22:55:23,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 22:55:23,766 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 19 states. [2020-11-29 22:55:23,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:23,882 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-11-29 22:55:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 22:55:23,883 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-11-29 22:55:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:23,884 INFO L225 Difference]: With dead ends: 88 [2020-11-29 22:55:23,884 INFO L226 Difference]: Without dead ends: 87 [2020-11-29 22:55:23,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 79 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 22:55:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-29 22:55:23,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-11-29 22:55:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-29 22:55:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-11-29 22:55:23,890 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 80 [2020-11-29 22:55:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:23,890 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-11-29 22:55:23,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 22:55:23,890 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-11-29 22:55:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 22:55:23,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:23,891 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1] [2020-11-29 22:55:24,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:24,092 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:24,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:24,092 INFO L82 PathProgramCache]: Analyzing trace with hash 951736741, now seen corresponding path program 16 times [2020-11-29 22:55:24,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:24,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580987922] [2020-11-29 22:55:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:24,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580987922] [2020-11-29 22:55:24,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071049601] [2020-11-29 22:55:24,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:24,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:55:24,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:24,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 22:55:24,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:24,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:24,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-29 22:55:24,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137146546] [2020-11-29 22:55:24,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 22:55:24,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:24,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 22:55:24,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:55:24,574 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 20 states. [2020-11-29 22:55:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:24,677 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2020-11-29 22:55:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 22:55:24,678 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 85 [2020-11-29 22:55:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:24,679 INFO L225 Difference]: With dead ends: 93 [2020-11-29 22:55:24,679 INFO L226 Difference]: Without dead ends: 92 [2020-11-29 22:55:24,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:55:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-29 22:55:24,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-11-29 22:55:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-29 22:55:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-11-29 22:55:24,712 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 85 [2020-11-29 22:55:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:24,713 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-11-29 22:55:24,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 22:55:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-11-29 22:55:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-29 22:55:24,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:24,717 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1] [2020-11-29 22:55:24,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 22:55:24,942 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:24,942 INFO L82 PathProgramCache]: Analyzing trace with hash 658370673, now seen corresponding path program 17 times [2020-11-29 22:55:24,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:24,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9412376] [2020-11-29 22:55:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:25,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9412376] [2020-11-29 22:55:25,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304152007] [2020-11-29 22:55:25,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:25,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-29 22:55:25,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:25,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 22:55:25,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:25,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:25,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-29 22:55:25,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246241371] [2020-11-29 22:55:25,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-29 22:55:25,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:25,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-29 22:55:25,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 22:55:25,468 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 21 states. [2020-11-29 22:55:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:25,581 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-11-29 22:55:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 22:55:25,585 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-11-29 22:55:25,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:25,586 INFO L225 Difference]: With dead ends: 98 [2020-11-29 22:55:25,586 INFO L226 Difference]: Without dead ends: 97 [2020-11-29 22:55:25,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 22:55:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-29 22:55:25,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-11-29 22:55:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 22:55:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2020-11-29 22:55:25,592 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 90 [2020-11-29 22:55:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:25,592 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2020-11-29 22:55:25,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-29 22:55:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2020-11-29 22:55:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-29 22:55:25,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:25,598 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2020-11-29 22:55:25,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 22:55:25,813 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:25,814 INFO L82 PathProgramCache]: Analyzing trace with hash 631552293, now seen corresponding path program 18 times [2020-11-29 22:55:25,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:25,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12335412] [2020-11-29 22:55:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:26,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12335412] [2020-11-29 22:55:26,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986687052] [2020-11-29 22:55:26,196 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:26,295 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-29 22:55:26,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:26,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 22:55:26,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:26,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:26,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-29 22:55:26,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890132888] [2020-11-29 22:55:26,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 22:55:26,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:26,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 22:55:26,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 22:55:26,378 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 22 states. [2020-11-29 22:55:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:26,478 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-11-29 22:55:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 22:55:26,479 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 95 [2020-11-29 22:55:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:26,480 INFO L225 Difference]: With dead ends: 103 [2020-11-29 22:55:26,480 INFO L226 Difference]: Without dead ends: 102 [2020-11-29 22:55:26,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 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 22:55:26,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-29 22:55:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-11-29 22:55:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 22:55:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2020-11-29 22:55:26,485 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 95 [2020-11-29 22:55:26,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:26,486 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2020-11-29 22:55:26,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 22:55:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2020-11-29 22:55:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 22:55:26,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:26,488 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1] [2020-11-29 22:55:26,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 22:55:26,714 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:26,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:26,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1285340943, now seen corresponding path program 19 times [2020-11-29 22:55:26,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:26,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839140507] [2020-11-29 22:55:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:27,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839140507] [2020-11-29 22:55:27,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547430029] [2020-11-29 22:55:27,115 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:27,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 22:55:27,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:27,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:27,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-29 22:55:27,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265887156] [2020-11-29 22:55:27,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-29 22:55:27,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:27,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-29 22:55:27,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-11-29 22:55:27,272 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 23 states. [2020-11-29 22:55:27,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:27,377 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-11-29 22:55:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 22:55:27,378 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-11-29 22:55:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:27,379 INFO L225 Difference]: With dead ends: 108 [2020-11-29 22:55:27,379 INFO L226 Difference]: Without dead ends: 107 [2020-11-29 22:55:27,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-11-29 22:55:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-29 22:55:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-11-29 22:55:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-29 22:55:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2020-11-29 22:55:27,384 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 100 [2020-11-29 22:55:27,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:27,385 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2020-11-29 22:55:27,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-29 22:55:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2020-11-29 22:55:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-29 22:55:27,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:27,386 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1] [2020-11-29 22:55:27,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 22:55:27,606 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:27,606 INFO L82 PathProgramCache]: Analyzing trace with hash -960644955, now seen corresponding path program 20 times [2020-11-29 22:55:27,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:27,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453803417] [2020-11-29 22:55:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:28,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453803417] [2020-11-29 22:55:28,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814290375] [2020-11-29 22:55:28,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:28,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:55:28,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:28,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 22:55:28,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:28,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:28,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-29 22:55:28,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302900402] [2020-11-29 22:55:28,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 22:55:28,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:28,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 22:55:28,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-11-29 22:55:28,218 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 24 states. [2020-11-29 22:55:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:28,341 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2020-11-29 22:55:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 22:55:28,342 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 105 [2020-11-29 22:55:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:28,343 INFO L225 Difference]: With dead ends: 113 [2020-11-29 22:55:28,343 INFO L226 Difference]: Without dead ends: 112 [2020-11-29 22:55:28,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 104 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 22:55:28,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-29 22:55:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-11-29 22:55:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-29 22:55:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2020-11-29 22:55:28,348 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 105 [2020-11-29 22:55:28,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:28,348 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2020-11-29 22:55:28,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 22:55:28,349 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2020-11-29 22:55:28,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-11-29 22:55:28,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:28,350 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1] [2020-11-29 22:55:28,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-29 22:55:28,562 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash -8523407, now seen corresponding path program 21 times [2020-11-29 22:55:28,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:28,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360952269] [2020-11-29 22:55:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:28,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360952269] [2020-11-29 22:55:28,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098815917] [2020-11-29 22:55:28,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:29,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-11-29 22:55:29,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:29,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 22:55:29,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:29,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:29,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-29 22:55:29,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527884415] [2020-11-29 22:55:29,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-29 22:55:29,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:29,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-29 22:55:29,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-11-29 22:55:29,095 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 25 states. [2020-11-29 22:55:29,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:29,198 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2020-11-29 22:55:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-29 22:55:29,198 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 110 [2020-11-29 22:55:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:29,200 INFO L225 Difference]: With dead ends: 118 [2020-11-29 22:55:29,200 INFO L226 Difference]: Without dead ends: 117 [2020-11-29 22:55:29,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 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 22:55:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-29 22:55:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-11-29 22:55:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-29 22:55:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2020-11-29 22:55:29,204 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 110 [2020-11-29 22:55:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:29,205 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2020-11-29 22:55:29,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-29 22:55:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2020-11-29 22:55:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-29 22:55:29,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:29,206 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2020-11-29 22:55:29,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:29,417 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:29,418 INFO L82 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 22 times [2020-11-29 22:55:29,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:29,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285858554] [2020-11-29 22:55:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:29,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285858554] [2020-11-29 22:55:29,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877850066] [2020-11-29 22:55:29,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:29,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:55:29,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:29,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 22:55:29,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:29,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:29,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-29 22:55:29,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195455694] [2020-11-29 22:55:29,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-29 22:55:29,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:29,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-29 22:55:29,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-11-29 22:55:29,953 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 26 states. [2020-11-29 22:55:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:30,053 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2020-11-29 22:55:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-29 22:55:30,054 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 115 [2020-11-29 22:55:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:30,055 INFO L225 Difference]: With dead ends: 123 [2020-11-29 22:55:30,055 INFO L226 Difference]: Without dead ends: 122 [2020-11-29 22:55:30,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-11-29 22:55:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-29 22:55:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-11-29 22:55:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-29 22:55:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2020-11-29 22:55:30,060 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 115 [2020-11-29 22:55:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:30,060 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2020-11-29 22:55:30,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-29 22:55:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2020-11-29 22:55:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-29 22:55:30,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:30,062 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1] [2020-11-29 22:55:30,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-29 22:55:30,263 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:30,263 INFO L82 PathProgramCache]: Analyzing trace with hash 542507505, now seen corresponding path program 23 times [2020-11-29 22:55:30,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:30,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620949111] [2020-11-29 22:55:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:30,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620949111] [2020-11-29 22:55:30,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659209807] [2020-11-29 22:55:30,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:30,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-11-29 22:55:30,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:30,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 22:55:30,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:30,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:30,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-29 22:55:30,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378882196] [2020-11-29 22:55:30,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-29 22:55:30,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:30,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-29 22:55:30,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 22:55:30,884 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 27 states. [2020-11-29 22:55:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:31,027 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2020-11-29 22:55:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 22:55:31,028 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 120 [2020-11-29 22:55:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:31,034 INFO L225 Difference]: With dead ends: 128 [2020-11-29 22:55:31,034 INFO L226 Difference]: Without dead ends: 127 [2020-11-29 22:55:31,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 22:55:31,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-29 22:55:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2020-11-29 22:55:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-29 22:55:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2020-11-29 22:55:31,042 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 120 [2020-11-29 22:55:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:31,043 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2020-11-29 22:55:31,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-29 22:55:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2020-11-29 22:55:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-29 22:55:31,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:31,045 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1] [2020-11-29 22:55:31,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:31,273 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:31,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:31,274 INFO L82 PathProgramCache]: Analyzing trace with hash -128215131, now seen corresponding path program 24 times [2020-11-29 22:55:31,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:31,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54496666] [2020-11-29 22:55:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:31,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54496666] [2020-11-29 22:55:31,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970504636] [2020-11-29 22:55:31,681 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:31,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-11-29 22:55:31,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:31,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-29 22:55:31,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:31,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:31,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-29 22:55:31,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285565866] [2020-11-29 22:55:31,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 22:55:31,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:31,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 22:55:31,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-11-29 22:55:31,834 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 28 states. [2020-11-29 22:55:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:31,960 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2020-11-29 22:55:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-29 22:55:31,961 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 125 [2020-11-29 22:55:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:31,962 INFO L225 Difference]: With dead ends: 133 [2020-11-29 22:55:31,962 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 22:55:31,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-11-29 22:55:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 22:55:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-11-29 22:55:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-29 22:55:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-11-29 22:55:31,967 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 125 [2020-11-29 22:55:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:31,968 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-11-29 22:55:31,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 22:55:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-11-29 22:55:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-29 22:55:31,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:31,970 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1] [2020-11-29 22:55:32,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-29 22:55:32,194 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:32,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:32,194 INFO L82 PathProgramCache]: Analyzing trace with hash -793546127, now seen corresponding path program 25 times [2020-11-29 22:55:32,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:32,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655923464] [2020-11-29 22:55:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:32,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655923464] [2020-11-29 22:55:32,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601695217] [2020-11-29 22:55:32,839 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:32,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 22:55:32,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:32,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:32,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-29 22:55:32,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346561175] [2020-11-29 22:55:32,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-29 22:55:32,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:32,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-29 22:55:32,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-11-29 22:55:32,980 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 29 states. [2020-11-29 22:55:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:33,150 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2020-11-29 22:55:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-29 22:55:33,150 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2020-11-29 22:55:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:33,151 INFO L225 Difference]: With dead ends: 138 [2020-11-29 22:55:33,151 INFO L226 Difference]: Without dead ends: 137 [2020-11-29 22:55:33,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-11-29 22:55:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-29 22:55:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-11-29 22:55:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 22:55:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2020-11-29 22:55:33,158 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 130 [2020-11-29 22:55:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:33,159 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2020-11-29 22:55:33,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-29 22:55:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2020-11-29 22:55:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-29 22:55:33,160 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:33,160 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1] [2020-11-29 22:55:33,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:33,382 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:33,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:33,382 INFO L82 PathProgramCache]: Analyzing trace with hash -212830427, now seen corresponding path program 26 times [2020-11-29 22:55:33,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:33,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331317586] [2020-11-29 22:55:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:33,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331317586] [2020-11-29 22:55:33,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421597995] [2020-11-29 22:55:33,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:33,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:55:33,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:33,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-29 22:55:33,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:34,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:34,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-29 22:55:34,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59797742] [2020-11-29 22:55:34,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-29 22:55:34,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:34,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-29 22:55:34,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-11-29 22:55:34,051 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 30 states. [2020-11-29 22:55:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:34,212 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2020-11-29 22:55:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-29 22:55:34,212 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 135 [2020-11-29 22:55:34,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:34,214 INFO L225 Difference]: With dead ends: 143 [2020-11-29 22:55:34,215 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 22:55:34,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 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 22:55:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 22:55:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-11-29 22:55:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 22:55:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2020-11-29 22:55:34,222 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 135 [2020-11-29 22:55:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:34,223 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2020-11-29 22:55:34,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-29 22:55:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2020-11-29 22:55:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-11-29 22:55:34,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:34,230 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1] [2020-11-29 22:55:34,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-29 22:55:34,450 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:34,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:34,450 INFO L82 PathProgramCache]: Analyzing trace with hash -245480719, now seen corresponding path program 27 times [2020-11-29 22:55:34,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:34,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749169843] [2020-11-29 22:55:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:35,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749169843] [2020-11-29 22:55:35,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110550972] [2020-11-29 22:55:35,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:35,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-11-29 22:55:35,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:35,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 22:55:35,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:35,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:35,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-29 22:55:35,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334134050] [2020-11-29 22:55:35,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-29 22:55:35,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:35,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-29 22:55:35,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 22:55:35,282 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 31 states. [2020-11-29 22:55:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:35,437 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2020-11-29 22:55:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-29 22:55:35,438 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 140 [2020-11-29 22:55:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:35,439 INFO L225 Difference]: With dead ends: 148 [2020-11-29 22:55:35,440 INFO L226 Difference]: Without dead ends: 147 [2020-11-29 22:55:35,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 22:55:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-29 22:55:35,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-11-29 22:55:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 22:55:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2020-11-29 22:55:35,448 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 140 [2020-11-29 22:55:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:35,448 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2020-11-29 22:55:35,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-29 22:55:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2020-11-29 22:55:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-29 22:55:35,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:35,450 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1] [2020-11-29 22:55:35,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:35,673 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:35,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:35,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2001991333, now seen corresponding path program 28 times [2020-11-29 22:55:35,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:35,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690392452] [2020-11-29 22:55:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:36,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690392452] [2020-11-29 22:55:36,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922800157] [2020-11-29 22:55:36,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:36,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:55:36,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:36,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 22:55:36,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:36,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:36,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-29 22:55:36,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734804902] [2020-11-29 22:55:36,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-29 22:55:36,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:36,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-29 22:55:36,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-11-29 22:55:36,408 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 32 states. [2020-11-29 22:55:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:36,516 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-11-29 22:55:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-29 22:55:36,517 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 145 [2020-11-29 22:55:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:36,518 INFO L225 Difference]: With dead ends: 153 [2020-11-29 22:55:36,518 INFO L226 Difference]: Without dead ends: 152 [2020-11-29 22:55:36,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-11-29 22:55:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-29 22:55:36,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-11-29 22:55:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-29 22:55:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2020-11-29 22:55:36,524 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 145 [2020-11-29 22:55:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:36,524 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2020-11-29 22:55:36,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-29 22:55:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2020-11-29 22:55:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-11-29 22:55:36,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:36,530 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1] [2020-11-29 22:55:36,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-29 22:55:36,747 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:36,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:36,748 INFO L82 PathProgramCache]: Analyzing trace with hash 152990577, now seen corresponding path program 29 times [2020-11-29 22:55:36,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:36,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296932443] [2020-11-29 22:55:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:37,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296932443] [2020-11-29 22:55:37,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217974704] [2020-11-29 22:55:37,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:37,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2020-11-29 22:55:37,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:37,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-29 22:55:37,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:37,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:37,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2020-11-29 22:55:37,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656130410] [2020-11-29 22:55:37,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-29 22:55:37,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:37,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-29 22:55:37,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 22:55:37,488 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 33 states. [2020-11-29 22:55:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:37,605 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2020-11-29 22:55:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-29 22:55:37,606 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 150 [2020-11-29 22:55:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:37,607 INFO L225 Difference]: With dead ends: 158 [2020-11-29 22:55:37,607 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 22:55:37,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 22:55:37,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 22:55:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-11-29 22:55:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 22:55:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2020-11-29 22:55:37,612 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 150 [2020-11-29 22:55:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:37,612 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2020-11-29 22:55:37,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-29 22:55:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2020-11-29 22:55:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-11-29 22:55:37,614 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:37,614 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1] [2020-11-29 22:55:37,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:37,821 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:37,822 INFO L82 PathProgramCache]: Analyzing trace with hash -90302939, now seen corresponding path program 30 times [2020-11-29 22:55:37,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:37,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775289259] [2020-11-29 22:55:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:38,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775289259] [2020-11-29 22:55:38,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879208361] [2020-11-29 22:55:38,524 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:38,625 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-11-29 22:55:38,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:38,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-29 22:55:38,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:38,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:38,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-29 22:55:38,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953138578] [2020-11-29 22:55:38,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-29 22:55:38,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:38,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-29 22:55:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 22:55:38,745 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 34 states. [2020-11-29 22:55:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:38,873 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2020-11-29 22:55:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-29 22:55:38,873 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 155 [2020-11-29 22:55:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:38,875 INFO L225 Difference]: With dead ends: 163 [2020-11-29 22:55:38,875 INFO L226 Difference]: Without dead ends: 162 [2020-11-29 22:55:38,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 154 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 22:55:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-29 22:55:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-11-29 22:55:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-29 22:55:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2020-11-29 22:55:38,881 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 155 [2020-11-29 22:55:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:38,881 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2020-11-29 22:55:38,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-29 22:55:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2020-11-29 22:55:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-29 22:55:38,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:38,883 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1] [2020-11-29 22:55:39,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-29 22:55:39,094 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:39,094 INFO L82 PathProgramCache]: Analyzing trace with hash -994311183, now seen corresponding path program 31 times [2020-11-29 22:55:39,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:39,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018674479] [2020-11-29 22:55:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:39,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018674479] [2020-11-29 22:55:39,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451885192] [2020-11-29 22:55:39,896 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:39,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-29 22:55:39,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:40,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:40,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2020-11-29 22:55:40,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696476354] [2020-11-29 22:55:40,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-29 22:55:40,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:40,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-29 22:55:40,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 22:55:40,046 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 35 states. [2020-11-29 22:55:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:40,160 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2020-11-29 22:55:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-29 22:55:40,160 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 160 [2020-11-29 22:55:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:40,162 INFO L225 Difference]: With dead ends: 168 [2020-11-29 22:55:40,162 INFO L226 Difference]: Without dead ends: 167 [2020-11-29 22:55:40,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 22:55:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-29 22:55:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2020-11-29 22:55:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-29 22:55:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2020-11-29 22:55:40,168 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 160 [2020-11-29 22:55:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:40,169 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2020-11-29 22:55:40,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-29 22:55:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2020-11-29 22:55:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-29 22:55:40,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:40,171 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1] [2020-11-29 22:55:40,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-29 22:55:40,398 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1922640475, now seen corresponding path program 32 times [2020-11-29 22:55:40,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:40,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803106881] [2020-11-29 22:55:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:41,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803106881] [2020-11-29 22:55:41,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233378680] [2020-11-29 22:55:41,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:41,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:55:41,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:41,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-29 22:55:41,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:41,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:41,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2020-11-29 22:55:41,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483409947] [2020-11-29 22:55:41,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-29 22:55:41,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:41,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-29 22:55:41,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 22:55:41,244 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 36 states. [2020-11-29 22:55:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:41,413 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2020-11-29 22:55:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-29 22:55:41,413 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 165 [2020-11-29 22:55:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:41,414 INFO L225 Difference]: With dead ends: 173 [2020-11-29 22:55:41,414 INFO L226 Difference]: Without dead ends: 172 [2020-11-29 22:55:41,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 22:55:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-29 22:55:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2020-11-29 22:55:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-29 22:55:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2020-11-29 22:55:41,420 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 165 [2020-11-29 22:55:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:41,420 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2020-11-29 22:55:41,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-29 22:55:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2020-11-29 22:55:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-11-29 22:55:41,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:41,422 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1] [2020-11-29 22:55:41,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-29 22:55:41,634 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:41,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:41,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1996420209, now seen corresponding path program 33 times [2020-11-29 22:55:41,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:41,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980327994] [2020-11-29 22:55:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:42,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980327994] [2020-11-29 22:55:42,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285902602] [2020-11-29 22:55:42,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:42,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2020-11-29 22:55:42,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:42,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 22:55:42,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:42,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:42,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2020-11-29 22:55:42,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854145821] [2020-11-29 22:55:42,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-29 22:55:42,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:42,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-29 22:55:42,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-11-29 22:55:42,671 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 37 states. [2020-11-29 22:55:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:42,819 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2020-11-29 22:55:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-29 22:55:42,820 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 170 [2020-11-29 22:55:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:42,822 INFO L225 Difference]: With dead ends: 178 [2020-11-29 22:55:42,822 INFO L226 Difference]: Without dead ends: 177 [2020-11-29 22:55:42,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-11-29 22:55:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-29 22:55:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2020-11-29 22:55:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-29 22:55:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-11-29 22:55:42,828 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 170 [2020-11-29 22:55:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:42,829 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-11-29 22:55:42,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-11-29 22:55:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-11-29 22:55:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-11-29 22:55:42,830 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:42,831 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1] [2020-11-29 22:55:43,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-29 22:55:43,049 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:43,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1508259109, now seen corresponding path program 34 times [2020-11-29 22:55:43,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:43,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497196469] [2020-11-29 22:55:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:43,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497196469] [2020-11-29 22:55:43,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662644087] [2020-11-29 22:55:43,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:43,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:55:43,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:43,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-29 22:55:43,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:43,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:43,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-29 22:55:43,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015979228] [2020-11-29 22:55:43,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-29 22:55:43,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:43,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-29 22:55:43,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 22:55:43,910 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 38 states. [2020-11-29 22:55:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:44,036 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2020-11-29 22:55:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-29 22:55:44,037 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 175 [2020-11-29 22:55:44,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:44,038 INFO L225 Difference]: With dead ends: 183 [2020-11-29 22:55:44,038 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 22:55:44,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 22:55:44,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 22:55:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2020-11-29 22:55:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-29 22:55:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2020-11-29 22:55:44,043 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 175 [2020-11-29 22:55:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:44,044 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2020-11-29 22:55:44,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-29 22:55:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2020-11-29 22:55:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-11-29 22:55:44,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:44,046 INFO L422 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1] [2020-11-29 22:55:44,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-29 22:55:44,266 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:44,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1733344015, now seen corresponding path program 35 times [2020-11-29 22:55:44,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:44,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219452012] [2020-11-29 22:55:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:45,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219452012] [2020-11-29 22:55:45,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962392712] [2020-11-29 22:55:45,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:45,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2020-11-29 22:55:45,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:45,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 22:55:45,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:45,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:45,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2020-11-29 22:55:45,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628543354] [2020-11-29 22:55:45,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-29 22:55:45,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:45,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-29 22:55:45,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 22:55:45,373 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 39 states. [2020-11-29 22:55:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:45,508 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2020-11-29 22:55:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-29 22:55:45,508 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 180 [2020-11-29 22:55:45,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:45,509 INFO L225 Difference]: With dead ends: 188 [2020-11-29 22:55:45,509 INFO L226 Difference]: Without dead ends: 187 [2020-11-29 22:55:45,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 22:55:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-29 22:55:45,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2020-11-29 22:55:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-29 22:55:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2020-11-29 22:55:45,516 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 180 [2020-11-29 22:55:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:45,517 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2020-11-29 22:55:45,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-11-29 22:55:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2020-11-29 22:55:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-29 22:55:45,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:45,518 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1] [2020-11-29 22:55:45,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-29 22:55:45,741 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:45,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:45,742 INFO L82 PathProgramCache]: Analyzing trace with hash 609498277, now seen corresponding path program 36 times [2020-11-29 22:55:45,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:45,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818066073] [2020-11-29 22:55:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:46,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818066073] [2020-11-29 22:55:46,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338574473] [2020-11-29 22:55:46,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:46,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2020-11-29 22:55:46,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:46,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 22:55:46,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:47,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:47,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2020-11-29 22:55:47,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807345088] [2020-11-29 22:55:47,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-29 22:55:47,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:47,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-29 22:55:47,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 22:55:47,087 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 40 states. [2020-11-29 22:55:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:47,288 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2020-11-29 22:55:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-29 22:55:47,289 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 185 [2020-11-29 22:55:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:47,290 INFO L225 Difference]: With dead ends: 193 [2020-11-29 22:55:47,290 INFO L226 Difference]: Without dead ends: 192 [2020-11-29 22:55:47,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 22:55:47,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-29 22:55:47,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2020-11-29 22:55:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-11-29 22:55:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2020-11-29 22:55:47,295 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 185 [2020-11-29 22:55:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:47,296 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2020-11-29 22:55:47,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-29 22:55:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2020-11-29 22:55:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-11-29 22:55:47,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:47,297 INFO L422 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1] [2020-11-29 22:55:47,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-11-29 22:55:47,510 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:47,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1217721713, now seen corresponding path program 37 times [2020-11-29 22:55:47,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:47,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317852410] [2020-11-29 22:55:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:48,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317852410] [2020-11-29 22:55:48,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120392984] [2020-11-29 22:55:48,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:48,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-29 22:55:48,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:48,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:48,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2020-11-29 22:55:48,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066107636] [2020-11-29 22:55:48,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-11-29 22:55:48,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:48,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-11-29 22:55:48,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-11-29 22:55:48,812 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 41 states. [2020-11-29 22:55:48,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:48,979 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-11-29 22:55:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-29 22:55:48,980 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 190 [2020-11-29 22:55:48,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:48,981 INFO L225 Difference]: With dead ends: 198 [2020-11-29 22:55:48,981 INFO L226 Difference]: Without dead ends: 197 [2020-11-29 22:55:48,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-11-29 22:55:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-11-29 22:55:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2020-11-29 22:55:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-11-29 22:55:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2020-11-29 22:55:48,987 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 190 [2020-11-29 22:55:48,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:48,988 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2020-11-29 22:55:48,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-11-29 22:55:48,988 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2020-11-29 22:55:48,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-29 22:55:48,989 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:48,990 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2020-11-29 22:55:49,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:49,201 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:49,202 INFO L82 PathProgramCache]: Analyzing trace with hash -890711003, now seen corresponding path program 38 times [2020-11-29 22:55:49,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:49,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580088919] [2020-11-29 22:55:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:50,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580088919] [2020-11-29 22:55:50,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770027620] [2020-11-29 22:55:50,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:50,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:55:50,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:50,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-29 22:55:50,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:50,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:50,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2020-11-29 22:55:50,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019605221] [2020-11-29 22:55:50,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-29 22:55:50,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:50,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-29 22:55:50,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 22:55:50,370 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 42 states. [2020-11-29 22:55:50,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:50,506 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2020-11-29 22:55:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-29 22:55:50,506 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 195 [2020-11-29 22:55:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:50,507 INFO L225 Difference]: With dead ends: 203 [2020-11-29 22:55:50,507 INFO L226 Difference]: Without dead ends: 202 [2020-11-29 22:55:50,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 22:55:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-29 22:55:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2020-11-29 22:55:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-11-29 22:55:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2020-11-29 22:55:50,514 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 195 [2020-11-29 22:55:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:50,514 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2020-11-29 22:55:50,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-29 22:55:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2020-11-29 22:55:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-29 22:55:50,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:50,516 INFO L422 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1] [2020-11-29 22:55:50,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:50,722 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash -881326607, now seen corresponding path program 39 times [2020-11-29 22:55:50,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:50,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287379802] [2020-11-29 22:55:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:51,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287379802] [2020-11-29 22:55:51,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319903288] [2020-11-29 22:55:51,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:51,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2020-11-29 22:55:51,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:51,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-29 22:55:51,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:51,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:51,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2020-11-29 22:55:51,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364438244] [2020-11-29 22:55:51,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-11-29 22:55:51,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:51,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-11-29 22:55:51,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 22:55:51,964 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 43 states. [2020-11-29 22:55:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:52,138 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2020-11-29 22:55:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-29 22:55:52,139 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 200 [2020-11-29 22:55:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:52,140 INFO L225 Difference]: With dead ends: 208 [2020-11-29 22:55:52,140 INFO L226 Difference]: Without dead ends: 207 [2020-11-29 22:55:52,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 22:55:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-11-29 22:55:52,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2020-11-29 22:55:52,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-29 22:55:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2020-11-29 22:55:52,146 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 200 [2020-11-29 22:55:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:52,147 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2020-11-29 22:55:52,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-11-29 22:55:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2020-11-29 22:55:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-29 22:55:52,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:52,148 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1] [2020-11-29 22:55:52,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:52,349 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:52,349 INFO L82 PathProgramCache]: Analyzing trace with hash -975432795, now seen corresponding path program 40 times [2020-11-29 22:55:52,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:52,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225654813] [2020-11-29 22:55:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:53,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225654813] [2020-11-29 22:55:53,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052831349] [2020-11-29 22:55:53,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:53,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:55:53,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:53,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-29 22:55:53,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:53,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:53,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2020-11-29 22:55:53,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579462262] [2020-11-29 22:55:53,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-29 22:55:53,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:53,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-29 22:55:53,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 22:55:53,559 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 44 states. [2020-11-29 22:55:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:53,778 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2020-11-29 22:55:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-29 22:55:53,779 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 205 [2020-11-29 22:55:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:53,780 INFO L225 Difference]: With dead ends: 213 [2020-11-29 22:55:53,780 INFO L226 Difference]: Without dead ends: 212 [2020-11-29 22:55:53,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 22:55:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-11-29 22:55:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2020-11-29 22:55:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-11-29 22:55:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2020-11-29 22:55:53,785 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 205 [2020-11-29 22:55:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:53,786 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2020-11-29 22:55:53,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-29 22:55:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2020-11-29 22:55:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-29 22:55:53,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:53,788 INFO L422 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1] [2020-11-29 22:55:53,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-11-29 22:55:53,992 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:53,992 INFO L82 PathProgramCache]: Analyzing trace with hash 203454065, now seen corresponding path program 41 times [2020-11-29 22:55:53,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:53,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988517424] [2020-11-29 22:55:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988517424] [2020-11-29 22:55:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482672401] [2020-11-29 22:55:55,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:55,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2020-11-29 22:55:55,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:55,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-29 22:55:55,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:55,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:55,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2020-11-29 22:55:55,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783332817] [2020-11-29 22:55:55,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-29 22:55:55,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:55,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-29 22:55:55,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-11-29 22:55:55,242 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 45 states. [2020-11-29 22:55:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:55,504 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2020-11-29 22:55:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-29 22:55:55,504 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 210 [2020-11-29 22:55:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:55,506 INFO L225 Difference]: With dead ends: 218 [2020-11-29 22:55:55,506 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 22:55:55,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 209 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 22:55:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 22:55:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2020-11-29 22:55:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-29 22:55:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2020-11-29 22:55:55,513 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 210 [2020-11-29 22:55:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:55,514 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2020-11-29 22:55:55,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-11-29 22:55:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2020-11-29 22:55:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-11-29 22:55:55,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:55,515 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1] [2020-11-29 22:55:55,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:55,734 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:55,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:55,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1486490843, now seen corresponding path program 42 times [2020-11-29 22:55:55,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:55,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011875335] [2020-11-29 22:55:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:56,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011875335] [2020-11-29 22:55:56,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408611284] [2020-11-29 22:55:56,815 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:56,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2020-11-29 22:55:56,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:55:56,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-29 22:55:56,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:57,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:57,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2020-11-29 22:55:57,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160980581] [2020-11-29 22:55:57,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-29 22:55:57,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:57,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-29 22:55:57,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 22:55:57,033 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 46 states. [2020-11-29 22:55:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:57,213 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2020-11-29 22:55:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-29 22:55:57,213 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 215 [2020-11-29 22:55:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:57,214 INFO L225 Difference]: With dead ends: 223 [2020-11-29 22:55:57,214 INFO L226 Difference]: Without dead ends: 222 [2020-11-29 22:55:57,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 22:55:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-11-29 22:55:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2020-11-29 22:55:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-29 22:55:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-11-29 22:55:57,219 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 215 [2020-11-29 22:55:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:57,220 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-11-29 22:55:57,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-29 22:55:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-11-29 22:55:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-11-29 22:55:57,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:57,221 INFO L422 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1] [2020-11-29 22:55:57,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:55:57,426 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:57,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:57,426 INFO L82 PathProgramCache]: Analyzing trace with hash 458639089, now seen corresponding path program 43 times [2020-11-29 22:55:57,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:57,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440537224] [2020-11-29 22:55:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:58,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440537224] [2020-11-29 22:55:58,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486848203] [2020-11-29 22:55:58,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:55:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:55:58,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 45 conjunts are in the unsatisfiable core [2020-11-29 22:55:58,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:55:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:55:59,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:55:59,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2020-11-29 22:55:59,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004340949] [2020-11-29 22:55:59,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-11-29 22:55:59,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:55:59,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-11-29 22:55:59,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 22:55:59,006 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 47 states. [2020-11-29 22:55:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:55:59,183 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2020-11-29 22:55:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-29 22:55:59,184 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 220 [2020-11-29 22:55:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:55:59,185 INFO L225 Difference]: With dead ends: 228 [2020-11-29 22:55:59,186 INFO L226 Difference]: Without dead ends: 227 [2020-11-29 22:55:59,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 22:55:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-11-29 22:55:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2020-11-29 22:55:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-29 22:55:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2020-11-29 22:55:59,192 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 220 [2020-11-29 22:55:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:55:59,192 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2020-11-29 22:55:59,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-11-29 22:55:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2020-11-29 22:55:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-11-29 22:55:59,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:55:59,199 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1] [2020-11-29 22:55:59,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-11-29 22:55:59,421 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:55:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:55:59,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1682017627, now seen corresponding path program 44 times [2020-11-29 22:55:59,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:55:59,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507849120] [2020-11-29 22:55:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:55:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:00,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507849120] [2020-11-29 22:56:00,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489819380] [2020-11-29 22:56:00,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:56:00,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:56:00,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:00,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-29 22:56:00,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:00,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:00,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2020-11-29 22:56:00,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165311131] [2020-11-29 22:56:00,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-29 22:56:00,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:00,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-29 22:56:00,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 22:56:00,747 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 48 states. [2020-11-29 22:56:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:01,024 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2020-11-29 22:56:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-29 22:56:01,025 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 225 [2020-11-29 22:56:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:01,027 INFO L225 Difference]: With dead ends: 233 [2020-11-29 22:56:01,027 INFO L226 Difference]: Without dead ends: 232 [2020-11-29 22:56:01,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 22:56:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-11-29 22:56:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2020-11-29 22:56:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-11-29 22:56:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2020-11-29 22:56:01,034 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 225 [2020-11-29 22:56:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:01,034 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2020-11-29 22:56:01,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-29 22:56:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2020-11-29 22:56:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-11-29 22:56:01,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:01,036 INFO L422 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1] [2020-11-29 22:56:01,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-29 22:56:01,249 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:01,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:01,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1344178319, now seen corresponding path program 45 times [2020-11-29 22:56:01,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:01,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126448753] [2020-11-29 22:56:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:02,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126448753] [2020-11-29 22:56:02,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107909238] [2020-11-29 22:56:02,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:56:02,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2020-11-29 22:56:02,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:02,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 22:56:02,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:02,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:02,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2020-11-29 22:56:02,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975708504] [2020-11-29 22:56:02,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-11-29 22:56:02,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:02,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-11-29 22:56:02,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 22:56:02,880 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 49 states. [2020-11-29 22:56:03,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:03,166 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2020-11-29 22:56:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-29 22:56:03,167 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 230 [2020-11-29 22:56:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:03,168 INFO L225 Difference]: With dead ends: 238 [2020-11-29 22:56:03,168 INFO L226 Difference]: Without dead ends: 237 [2020-11-29 22:56:03,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 22:56:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-11-29 22:56:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2020-11-29 22:56:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-11-29 22:56:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2020-11-29 22:56:03,175 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 230 [2020-11-29 22:56:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:03,176 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2020-11-29 22:56:03,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-11-29 22:56:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2020-11-29 22:56:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-11-29 22:56:03,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:03,183 INFO L422 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2020-11-29 22:56:03,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-11-29 22:56:03,397 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 46 times [2020-11-29 22:56:03,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:03,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739375756] [2020-11-29 22:56:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:04,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739375756] [2020-11-29 22:56:04,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967629929] [2020-11-29 22:56:04,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:56:04,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:56:04,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:04,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-29 22:56:04,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:04,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:04,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2020-11-29 22:56:05,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644747389] [2020-11-29 22:56:05,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-29 22:56:05,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:05,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-29 22:56:05,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-11-29 22:56:05,002 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 50 states. [2020-11-29 22:56:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:05,218 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2020-11-29 22:56:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-29 22:56:05,219 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 235 [2020-11-29 22:56:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:05,221 INFO L225 Difference]: With dead ends: 243 [2020-11-29 22:56:05,221 INFO L226 Difference]: Without dead ends: 242 [2020-11-29 22:56:05,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-11-29 22:56:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-29 22:56:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2020-11-29 22:56:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-29 22:56:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2020-11-29 22:56:05,229 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 235 [2020-11-29 22:56:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:05,230 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2020-11-29 22:56:05,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-29 22:56:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2020-11-29 22:56:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-11-29 22:56:05,233 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:05,233 INFO L422 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1] [2020-11-29 22:56:05,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:05,434 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:05,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:05,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1500903439, now seen corresponding path program 47 times [2020-11-29 22:56:05,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:05,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31821333] [2020-11-29 22:56:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:06,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31821333] [2020-11-29 22:56:06,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832047652] [2020-11-29 22:56:06,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:56:06,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2020-11-29 22:56:06,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:06,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 49 conjunts are in the unsatisfiable core [2020-11-29 22:56:06,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:06,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:06,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2020-11-29 22:56:06,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247286604] [2020-11-29 22:56:06,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-11-29 22:56:06,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:06,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-11-29 22:56:06,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 22:56:06,922 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 51 states. [2020-11-29 22:56:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:07,230 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2020-11-29 22:56:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-29 22:56:07,231 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 240 [2020-11-29 22:56:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:07,233 INFO L225 Difference]: With dead ends: 248 [2020-11-29 22:56:07,233 INFO L226 Difference]: Without dead ends: 247 [2020-11-29 22:56:07,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 22:56:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-11-29 22:56:07,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2020-11-29 22:56:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-11-29 22:56:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2020-11-29 22:56:07,240 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 240 [2020-11-29 22:56:07,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:07,241 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2020-11-29 22:56:07,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-11-29 22:56:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2020-11-29 22:56:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-11-29 22:56:07,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:07,243 INFO L422 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1] [2020-11-29 22:56:07,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:07,458 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:07,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1874547109, now seen corresponding path program 48 times [2020-11-29 22:56:07,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:07,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051627584] [2020-11-29 22:56:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:08,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051627584] [2020-11-29 22:56:08,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757477786] [2020-11-29 22:56:08,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/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 22:56:08,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2020-11-29 22:56:08,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:08,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-29 22:56:08,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:09,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:09,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2020-11-29 22:56:09,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598839833] [2020-11-29 22:56:09,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-29 22:56:09,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-29 22:56:09,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 22:56:09,037 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 52 states. [2020-11-29 22:56:09,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:09,264 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2020-11-29 22:56:09,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-29 22:56:09,264 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 245 [2020-11-29 22:56:09,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:09,265 INFO L225 Difference]: With dead ends: 253 [2020-11-29 22:56:09,266 INFO L226 Difference]: Without dead ends: 252 [2020-11-29 22:56:09,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 22:56:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-11-29 22:56:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2020-11-29 22:56:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-11-29 22:56:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2020-11-29 22:56:09,271 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 245 [2020-11-29 22:56:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:09,271 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2020-11-29 22:56:09,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-29 22:56:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2020-11-29 22:56:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-11-29 22:56:09,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:09,273 INFO L422 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1] [2020-11-29 22:56:09,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2020-11-29 22:56:09,481 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:09,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2112358287, now seen corresponding path program 49 times [2020-11-29 22:56:09,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:09,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9792175] [2020-11-29 22:56:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:10,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9792175] [2020-11-29 22:56:10,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724862919] [2020-11-29 22:56:10,896 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:10,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 51 conjunts are in the unsatisfiable core [2020-11-29 22:56:10,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:11,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:11,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2020-11-29 22:56:11,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682712683] [2020-11-29 22:56:11,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-11-29 22:56:11,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:11,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-11-29 22:56:11,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 22:56:11,096 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 53 states. [2020-11-29 22:56:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:11,415 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2020-11-29 22:56:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-29 22:56:11,415 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 250 [2020-11-29 22:56:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:11,417 INFO L225 Difference]: With dead ends: 258 [2020-11-29 22:56:11,417 INFO L226 Difference]: Without dead ends: 257 [2020-11-29 22:56:11,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 22:56:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-29 22:56:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2020-11-29 22:56:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-11-29 22:56:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2020-11-29 22:56:11,424 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 250 [2020-11-29 22:56:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:11,425 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2020-11-29 22:56:11,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-11-29 22:56:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2020-11-29 22:56:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-29 22:56:11,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:11,427 INFO L422 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1] [2020-11-29 22:56:11,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:11,650 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash 701477157, now seen corresponding path program 50 times [2020-11-29 22:56:11,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:11,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749283593] [2020-11-29 22:56:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:13,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749283593] [2020-11-29 22:56:13,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255417180] [2020-11-29 22:56:13,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:13,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:56:13,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:13,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 52 conjunts are in the unsatisfiable core [2020-11-29 22:56:13,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:13,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:13,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2020-11-29 22:56:13,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990715334] [2020-11-29 22:56:13,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-29 22:56:13,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:13,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-29 22:56:13,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 22:56:13,280 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 54 states. [2020-11-29 22:56:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:13,495 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2020-11-29 22:56:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-29 22:56:13,495 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 255 [2020-11-29 22:56:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:13,496 INFO L225 Difference]: With dead ends: 263 [2020-11-29 22:56:13,496 INFO L226 Difference]: Without dead ends: 262 [2020-11-29 22:56:13,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 22:56:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-29 22:56:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2020-11-29 22:56:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-11-29 22:56:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2020-11-29 22:56:13,503 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 255 [2020-11-29 22:56:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:13,504 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2020-11-29 22:56:13,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-29 22:56:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2020-11-29 22:56:13,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-11-29 22:56:13,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:13,506 INFO L422 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1] [2020-11-29 22:56:13,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-11-29 22:56:13,722 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:13,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:13,722 INFO L82 PathProgramCache]: Analyzing trace with hash -346863375, now seen corresponding path program 51 times [2020-11-29 22:56:13,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:13,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609050980] [2020-11-29 22:56:13,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:15,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609050980] [2020-11-29 22:56:15,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839483050] [2020-11-29 22:56:15,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:15,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2020-11-29 22:56:15,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:15,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 53 conjunts are in the unsatisfiable core [2020-11-29 22:56:15,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:15,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:15,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2020-11-29 22:56:15,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620711683] [2020-11-29 22:56:15,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-29 22:56:15,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:15,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-29 22:56:15,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 22:56:15,421 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 55 states. [2020-11-29 22:56:15,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:15,639 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2020-11-29 22:56:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-29 22:56:15,640 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 260 [2020-11-29 22:56:15,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:15,641 INFO L225 Difference]: With dead ends: 268 [2020-11-29 22:56:15,641 INFO L226 Difference]: Without dead ends: 267 [2020-11-29 22:56:15,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 22:56:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-11-29 22:56:15,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2020-11-29 22:56:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-29 22:56:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-11-29 22:56:15,649 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 260 [2020-11-29 22:56:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:15,649 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-11-29 22:56:15,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-11-29 22:56:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-11-29 22:56:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-11-29 22:56:15,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:15,651 INFO L422 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1] [2020-11-29 22:56:15,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-11-29 22:56:15,854 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:15,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1416449883, now seen corresponding path program 52 times [2020-11-29 22:56:15,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:15,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315212438] [2020-11-29 22:56:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:17,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315212438] [2020-11-29 22:56:17,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395057598] [2020-11-29 22:56:17,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:17,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:56:17,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:17,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 54 conjunts are in the unsatisfiable core [2020-11-29 22:56:17,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:17,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:17,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2020-11-29 22:56:17,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652276620] [2020-11-29 22:56:17,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-29 22:56:17,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:17,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-29 22:56:17,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-11-29 22:56:17,664 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 56 states. [2020-11-29 22:56:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:17,919 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2020-11-29 22:56:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-29 22:56:17,920 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 265 [2020-11-29 22:56:17,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:17,921 INFO L225 Difference]: With dead ends: 273 [2020-11-29 22:56:17,921 INFO L226 Difference]: Without dead ends: 272 [2020-11-29 22:56:17,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-11-29 22:56:17,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-11-29 22:56:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2020-11-29 22:56:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-11-29 22:56:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2020-11-29 22:56:17,928 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 265 [2020-11-29 22:56:17,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:17,928 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2020-11-29 22:56:17,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-29 22:56:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2020-11-29 22:56:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-11-29 22:56:17,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:17,931 INFO L422 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1] [2020-11-29 22:56:18,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-11-29 22:56:18,150 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:18,150 INFO L82 PathProgramCache]: Analyzing trace with hash 822344049, now seen corresponding path program 53 times [2020-11-29 22:56:18,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:18,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120381307] [2020-11-29 22:56:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:19,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120381307] [2020-11-29 22:56:19,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788062939] [2020-11-29 22:56:19,800 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:19,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2020-11-29 22:56:19,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:19,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 55 conjunts are in the unsatisfiable core [2020-11-29 22:56:19,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:20,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:20,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2020-11-29 22:56:20,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560054309] [2020-11-29 22:56:20,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-11-29 22:56:20,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:20,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-11-29 22:56:20,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-11-29 22:56:20,077 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 57 states. [2020-11-29 22:56:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:20,255 INFO L93 Difference]: Finished difference Result 278 states and 278 transitions. [2020-11-29 22:56:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-29 22:56:20,255 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 270 [2020-11-29 22:56:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:20,257 INFO L225 Difference]: With dead ends: 278 [2020-11-29 22:56:20,257 INFO L226 Difference]: Without dead ends: 277 [2020-11-29 22:56:20,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-11-29 22:56:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-11-29 22:56:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276. [2020-11-29 22:56:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-11-29 22:56:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2020-11-29 22:56:20,264 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 270 [2020-11-29 22:56:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:20,264 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2020-11-29 22:56:20,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-11-29 22:56:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2020-11-29 22:56:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-11-29 22:56:20,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:20,267 INFO L422 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1] [2020-11-29 22:56:20,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-11-29 22:56:20,481 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:20,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1556328411, now seen corresponding path program 54 times [2020-11-29 22:56:20,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:20,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829213456] [2020-11-29 22:56:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:22,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829213456] [2020-11-29 22:56:22,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003223307] [2020-11-29 22:56:22,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:22,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2020-11-29 22:56:22,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:22,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 56 conjunts are in the unsatisfiable core [2020-11-29 22:56:22,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:22,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:22,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2020-11-29 22:56:22,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571414466] [2020-11-29 22:56:22,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-29 22:56:22,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:22,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-29 22:56:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-11-29 22:56:22,358 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 58 states. [2020-11-29 22:56:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:22,645 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2020-11-29 22:56:22,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-29 22:56:22,646 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 275 [2020-11-29 22:56:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:22,647 INFO L225 Difference]: With dead ends: 283 [2020-11-29 22:56:22,647 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 22:56:22,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-11-29 22:56:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 22:56:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2020-11-29 22:56:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-11-29 22:56:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2020-11-29 22:56:22,659 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 275 [2020-11-29 22:56:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:22,659 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2020-11-29 22:56:22,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-29 22:56:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2020-11-29 22:56:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-11-29 22:56:22,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:22,661 INFO L422 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1] [2020-11-29 22:56:22,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:22,862 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:22,862 INFO L82 PathProgramCache]: Analyzing trace with hash -940439055, now seen corresponding path program 55 times [2020-11-29 22:56:22,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:22,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007334022] [2020-11-29 22:56:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:24,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007334022] [2020-11-29 22:56:24,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49609726] [2020-11-29 22:56:24,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:24,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 57 conjunts are in the unsatisfiable core [2020-11-29 22:56:24,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:24,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:24,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2020-11-29 22:56:24,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858070882] [2020-11-29 22:56:24,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-11-29 22:56:24,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:24,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-11-29 22:56:24,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-11-29 22:56:24,692 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 59 states. [2020-11-29 22:56:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:24,896 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2020-11-29 22:56:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-29 22:56:24,896 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 280 [2020-11-29 22:56:24,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:24,898 INFO L225 Difference]: With dead ends: 288 [2020-11-29 22:56:24,898 INFO L226 Difference]: Without dead ends: 287 [2020-11-29 22:56:24,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-11-29 22:56:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-29 22:56:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2020-11-29 22:56:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-11-29 22:56:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2020-11-29 22:56:24,906 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 280 [2020-11-29 22:56:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:24,907 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2020-11-29 22:56:24,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-11-29 22:56:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2020-11-29 22:56:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-11-29 22:56:24,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:24,910 INFO L422 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1] [2020-11-29 22:56:25,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-11-29 22:56:25,126 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:25,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:25,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1493471141, now seen corresponding path program 56 times [2020-11-29 22:56:25,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:25,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706080760] [2020-11-29 22:56:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:26,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706080760] [2020-11-29 22:56:26,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855675614] [2020-11-29 22:56:26,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:26,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:56:26,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:26,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 58 conjunts are in the unsatisfiable core [2020-11-29 22:56:26,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:27,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:27,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2020-11-29 22:56:27,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246905482] [2020-11-29 22:56:27,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-29 22:56:27,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:27,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-29 22:56:27,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-11-29 22:56:27,024 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 60 states. [2020-11-29 22:56:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:27,284 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2020-11-29 22:56:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-11-29 22:56:27,285 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 285 [2020-11-29 22:56:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:27,286 INFO L225 Difference]: With dead ends: 293 [2020-11-29 22:56:27,286 INFO L226 Difference]: Without dead ends: 292 [2020-11-29 22:56:27,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-11-29 22:56:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-11-29 22:56:27,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2020-11-29 22:56:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-11-29 22:56:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2020-11-29 22:56:27,292 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 285 [2020-11-29 22:56:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:27,292 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2020-11-29 22:56:27,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-29 22:56:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2020-11-29 22:56:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-11-29 22:56:27,294 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:27,294 INFO L422 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 1, 1, 1, 1] [2020-11-29 22:56:27,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:27,502 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:27,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:27,502 INFO L82 PathProgramCache]: Analyzing trace with hash -890930575, now seen corresponding path program 57 times [2020-11-29 22:56:27,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:27,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058005901] [2020-11-29 22:56:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:29,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058005901] [2020-11-29 22:56:29,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184131768] [2020-11-29 22:56:29,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:29,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2020-11-29 22:56:29,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:29,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 59 conjunts are in the unsatisfiable core [2020-11-29 22:56:29,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:29,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:29,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2020-11-29 22:56:29,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739598874] [2020-11-29 22:56:29,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-11-29 22:56:29,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:29,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-11-29 22:56:29,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-11-29 22:56:29,572 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 61 states. [2020-11-29 22:56:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:29,815 INFO L93 Difference]: Finished difference Result 298 states and 298 transitions. [2020-11-29 22:56:29,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-29 22:56:29,815 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 290 [2020-11-29 22:56:29,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:29,817 INFO L225 Difference]: With dead ends: 298 [2020-11-29 22:56:29,817 INFO L226 Difference]: Without dead ends: 297 [2020-11-29 22:56:29,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-11-29 22:56:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-11-29 22:56:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2020-11-29 22:56:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-11-29 22:56:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2020-11-29 22:56:29,822 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 290 [2020-11-29 22:56:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:29,822 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2020-11-29 22:56:29,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-11-29 22:56:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2020-11-29 22:56:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-11-29 22:56:29,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:29,823 INFO L422 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 1, 1, 1, 1] [2020-11-29 22:56:30,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-11-29 22:56:30,024 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash 790851365, now seen corresponding path program 58 times [2020-11-29 22:56:30,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:30,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492594877] [2020-11-29 22:56:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:31,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492594877] [2020-11-29 22:56:31,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260771680] [2020-11-29 22:56:31,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:31,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:56:31,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:31,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 60 conjunts are in the unsatisfiable core [2020-11-29 22:56:31,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:32,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:32,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2020-11-29 22:56:32,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028489404] [2020-11-29 22:56:32,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-11-29 22:56:32,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-11-29 22:56:32,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-11-29 22:56:32,038 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 62 states. [2020-11-29 22:56:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:32,309 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2020-11-29 22:56:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-29 22:56:32,309 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 295 [2020-11-29 22:56:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:32,310 INFO L225 Difference]: With dead ends: 303 [2020-11-29 22:56:32,311 INFO L226 Difference]: Without dead ends: 302 [2020-11-29 22:56:32,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-11-29 22:56:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-11-29 22:56:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2020-11-29 22:56:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-11-29 22:56:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2020-11-29 22:56:32,317 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 295 [2020-11-29 22:56:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:32,317 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2020-11-29 22:56:32,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-11-29 22:56:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2020-11-29 22:56:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-11-29 22:56:32,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:32,320 INFO L422 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 59, 1, 1, 1, 1] [2020-11-29 22:56:32,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:32,533 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:32,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2057718513, now seen corresponding path program 59 times [2020-11-29 22:56:32,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:32,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429338037] [2020-11-29 22:56:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:34,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429338037] [2020-11-29 22:56:34,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770277730] [2020-11-29 22:56:34,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:34,564 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2020-11-29 22:56:34,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:34,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 61 conjunts are in the unsatisfiable core [2020-11-29 22:56:34,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:34,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:34,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2020-11-29 22:56:34,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124153629] [2020-11-29 22:56:34,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-11-29 22:56:34,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:34,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-11-29 22:56:34,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-11-29 22:56:34,668 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 63 states. [2020-11-29 22:56:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:34,885 INFO L93 Difference]: Finished difference Result 308 states and 308 transitions. [2020-11-29 22:56:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-29 22:56:34,886 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 300 [2020-11-29 22:56:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:34,888 INFO L225 Difference]: With dead ends: 308 [2020-11-29 22:56:34,888 INFO L226 Difference]: Without dead ends: 307 [2020-11-29 22:56:34,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-11-29 22:56:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-11-29 22:56:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2020-11-29 22:56:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-11-29 22:56:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2020-11-29 22:56:34,895 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 300 [2020-11-29 22:56:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:34,895 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2020-11-29 22:56:34,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-11-29 22:56:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2020-11-29 22:56:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-11-29 22:56:34,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:34,897 INFO L422 BasicCegarLoop]: trace histogram [61, 60, 60, 60, 60, 1, 1, 1, 1] [2020-11-29 22:56:35,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-11-29 22:56:35,114 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:35,114 INFO L82 PathProgramCache]: Analyzing trace with hash 567340709, now seen corresponding path program 60 times [2020-11-29 22:56:35,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:35,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476307151] [2020-11-29 22:56:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:37,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476307151] [2020-11-29 22:56:37,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278647201] [2020-11-29 22:56:37,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:37,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2020-11-29 22:56:37,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:37,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 62 conjunts are in the unsatisfiable core [2020-11-29 22:56:37,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:37,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:37,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2020-11-29 22:56:37,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947429235] [2020-11-29 22:56:37,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-29 22:56:37,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:37,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-29 22:56:37,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-11-29 22:56:37,361 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 64 states. [2020-11-29 22:56:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:37,625 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2020-11-29 22:56:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-11-29 22:56:37,626 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 305 [2020-11-29 22:56:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:37,627 INFO L225 Difference]: With dead ends: 313 [2020-11-29 22:56:37,627 INFO L226 Difference]: Without dead ends: 312 [2020-11-29 22:56:37,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-11-29 22:56:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-11-29 22:56:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2020-11-29 22:56:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-11-29 22:56:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-11-29 22:56:37,633 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 305 [2020-11-29 22:56:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:37,634 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-11-29 22:56:37,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-29 22:56:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-11-29 22:56:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-11-29 22:56:37,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:37,636 INFO L422 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 1, 1, 1, 1] [2020-11-29 22:56:37,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:37,850 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:37,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:37,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1107526799, now seen corresponding path program 61 times [2020-11-29 22:56:37,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:37,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263963227] [2020-11-29 22:56:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:39,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263963227] [2020-11-29 22:56:39,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205580393] [2020-11-29 22:56:39,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:40,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 63 conjunts are in the unsatisfiable core [2020-11-29 22:56:40,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:40,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:40,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2020-11-29 22:56:40,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230534683] [2020-11-29 22:56:40,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-11-29 22:56:40,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:40,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-11-29 22:56:40,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-11-29 22:56:40,141 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 65 states. [2020-11-29 22:56:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:40,423 INFO L93 Difference]: Finished difference Result 318 states and 318 transitions. [2020-11-29 22:56:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-29 22:56:40,423 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 310 [2020-11-29 22:56:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:40,425 INFO L225 Difference]: With dead ends: 318 [2020-11-29 22:56:40,425 INFO L226 Difference]: Without dead ends: 317 [2020-11-29 22:56:40,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-11-29 22:56:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-11-29 22:56:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316. [2020-11-29 22:56:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-11-29 22:56:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2020-11-29 22:56:40,430 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 310 [2020-11-29 22:56:40,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:40,430 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2020-11-29 22:56:40,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-11-29 22:56:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2020-11-29 22:56:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-11-29 22:56:40,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:40,431 INFO L422 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1] [2020-11-29 22:56:40,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-11-29 22:56:40,632 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:40,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1195707941, now seen corresponding path program 62 times [2020-11-29 22:56:40,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:40,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308252241] [2020-11-29 22:56:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:42,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308252241] [2020-11-29 22:56:42,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264182148] [2020-11-29 22:56:42,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:42,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:56:42,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:42,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 64 conjunts are in the unsatisfiable core [2020-11-29 22:56:42,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:43,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:43,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2020-11-29 22:56:43,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251649884] [2020-11-29 22:56:43,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-11-29 22:56:43,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:43,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-11-29 22:56:43,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-11-29 22:56:43,086 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 66 states. [2020-11-29 22:56:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:43,424 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2020-11-29 22:56:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-11-29 22:56:43,424 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 315 [2020-11-29 22:56:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:43,426 INFO L225 Difference]: With dead ends: 323 [2020-11-29 22:56:43,426 INFO L226 Difference]: Without dead ends: 322 [2020-11-29 22:56:43,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-11-29 22:56:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-11-29 22:56:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2020-11-29 22:56:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-11-29 22:56:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2020-11-29 22:56:43,433 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 315 [2020-11-29 22:56:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:43,433 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2020-11-29 22:56:43,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-11-29 22:56:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2020-11-29 22:56:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-11-29 22:56:43,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:43,436 INFO L422 BasicCegarLoop]: trace histogram [64, 63, 63, 63, 63, 1, 1, 1, 1] [2020-11-29 22:56:43,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:43,640 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:43,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:43,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1582298127, now seen corresponding path program 63 times [2020-11-29 22:56:43,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:43,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080034301] [2020-11-29 22:56:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:46,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080034301] [2020-11-29 22:56:46,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827398336] [2020-11-29 22:56:46,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:46,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2020-11-29 22:56:46,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:46,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 65 conjunts are in the unsatisfiable core [2020-11-29 22:56:46,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:46,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:46,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2020-11-29 22:56:46,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606516801] [2020-11-29 22:56:46,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-11-29 22:56:46,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:46,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-11-29 22:56:46,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-11-29 22:56:46,405 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 67 states. [2020-11-29 22:56:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:46,906 INFO L93 Difference]: Finished difference Result 328 states and 328 transitions. [2020-11-29 22:56:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-11-29 22:56:46,906 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 320 [2020-11-29 22:56:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:46,908 INFO L225 Difference]: With dead ends: 328 [2020-11-29 22:56:46,908 INFO L226 Difference]: Without dead ends: 327 [2020-11-29 22:56:46,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-11-29 22:56:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-11-29 22:56:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 326. [2020-11-29 22:56:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-11-29 22:56:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2020-11-29 22:56:46,915 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 320 [2020-11-29 22:56:46,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:46,915 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2020-11-29 22:56:46,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-11-29 22:56:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2020-11-29 22:56:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-11-29 22:56:46,918 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:46,918 INFO L422 BasicCegarLoop]: trace histogram [65, 64, 64, 64, 64, 1, 1, 1, 1] [2020-11-29 22:56:47,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-11-29 22:56:47,133 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:47,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1337445797, now seen corresponding path program 64 times [2020-11-29 22:56:47,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:47,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304772933] [2020-11-29 22:56:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 10208 backedges. 0 proven. 10208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:49,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304772933] [2020-11-29 22:56:49,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117924799] [2020-11-29 22:56:49,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:49,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:56:49,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:49,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 66 conjunts are in the unsatisfiable core [2020-11-29 22:56:49,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10208 backedges. 0 proven. 10208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:49,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:49,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2020-11-29 22:56:49,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275605140] [2020-11-29 22:56:49,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-11-29 22:56:49,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:49,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-11-29 22:56:49,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-11-29 22:56:49,694 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 68 states. [2020-11-29 22:56:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:50,020 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2020-11-29 22:56:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-29 22:56:50,021 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 325 [2020-11-29 22:56:50,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:50,022 INFO L225 Difference]: With dead ends: 333 [2020-11-29 22:56:50,022 INFO L226 Difference]: Without dead ends: 332 [2020-11-29 22:56:50,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-11-29 22:56:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-11-29 22:56:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-11-29 22:56:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-11-29 22:56:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2020-11-29 22:56:50,031 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 325 [2020-11-29 22:56:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:50,032 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2020-11-29 22:56:50,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-11-29 22:56:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2020-11-29 22:56:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-11-29 22:56:50,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:50,034 INFO L422 BasicCegarLoop]: trace histogram [66, 65, 65, 65, 65, 1, 1, 1, 1] [2020-11-29 22:56:50,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-11-29 22:56:50,249 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:50,250 INFO L82 PathProgramCache]: Analyzing trace with hash -662111119, now seen corresponding path program 65 times [2020-11-29 22:56:50,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:50,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990011386] [2020-11-29 22:56:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10530 backedges. 0 proven. 10530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:52,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990011386] [2020-11-29 22:56:52,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561978518] [2020-11-29 22:56:52,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:52,862 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2020-11-29 22:56:52,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:52,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 67 conjunts are in the unsatisfiable core [2020-11-29 22:56:52,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10530 backedges. 0 proven. 10530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:52,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:52,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2020-11-29 22:56:52,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37942924] [2020-11-29 22:56:52,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-11-29 22:56:52,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:52,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-11-29 22:56:52,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-11-29 22:56:52,999 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 69 states. [2020-11-29 22:56:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:53,362 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2020-11-29 22:56:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-11-29 22:56:53,362 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 330 [2020-11-29 22:56:53,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:53,364 INFO L225 Difference]: With dead ends: 338 [2020-11-29 22:56:53,364 INFO L226 Difference]: Without dead ends: 337 [2020-11-29 22:56:53,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-11-29 22:56:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-11-29 22:56:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 336. [2020-11-29 22:56:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-11-29 22:56:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2020-11-29 22:56:53,369 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 330 [2020-11-29 22:56:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:53,370 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2020-11-29 22:56:53,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-11-29 22:56:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2020-11-29 22:56:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-11-29 22:56:53,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:53,372 INFO L422 BasicCegarLoop]: trace histogram [67, 66, 66, 66, 66, 1, 1, 1, 1] [2020-11-29 22:56:53,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-11-29 22:56:53,586 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:53,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:53,586 INFO L82 PathProgramCache]: Analyzing trace with hash 90254629, now seen corresponding path program 66 times [2020-11-29 22:56:53,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:53,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836556291] [2020-11-29 22:56:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10857 backedges. 0 proven. 10857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:56,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836556291] [2020-11-29 22:56:56,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341444182] [2020-11-29 22:56:56,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:56,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2020-11-29 22:56:56,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:56:56,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 68 conjunts are in the unsatisfiable core [2020-11-29 22:56:56,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10857 backedges. 0 proven. 10857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:56,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:56,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2020-11-29 22:56:56,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084469615] [2020-11-29 22:56:56,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-11-29 22:56:56,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:56,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-11-29 22:56:56,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-11-29 22:56:56,599 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 70 states. [2020-11-29 22:56:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:56:56,922 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2020-11-29 22:56:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-11-29 22:56:56,922 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 335 [2020-11-29 22:56:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:56:56,924 INFO L225 Difference]: With dead ends: 343 [2020-11-29 22:56:56,924 INFO L226 Difference]: Without dead ends: 342 [2020-11-29 22:56:56,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-11-29 22:56:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-11-29 22:56:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 341. [2020-11-29 22:56:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-11-29 22:56:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2020-11-29 22:56:56,929 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 335 [2020-11-29 22:56:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:56:56,929 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2020-11-29 22:56:56,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-11-29 22:56:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2020-11-29 22:56:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-11-29 22:56:56,931 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:56:56,931 INFO L422 BasicCegarLoop]: trace histogram [68, 67, 67, 67, 67, 1, 1, 1, 1] [2020-11-29 22:56:57,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:57,146 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:56:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:56:57,146 INFO L82 PathProgramCache]: Analyzing trace with hash 995052785, now seen corresponding path program 67 times [2020-11-29 22:56:57,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:56:57,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450149158] [2020-11-29 22:56:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:56:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11189 backedges. 0 proven. 11189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:59,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450149158] [2020-11-29 22:56:59,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035122147] [2020-11-29 22:56:59,714 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:56:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:56:59,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 69 conjunts are in the unsatisfiable core [2020-11-29 22:56:59,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:56:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11189 backedges. 0 proven. 11189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:56:59,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:56:59,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2020-11-29 22:56:59,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604819128] [2020-11-29 22:56:59,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-11-29 22:56:59,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:56:59,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-11-29 22:56:59,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-11-29 22:56:59,974 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 71 states. [2020-11-29 22:57:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:00,235 INFO L93 Difference]: Finished difference Result 348 states and 348 transitions. [2020-11-29 22:57:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-11-29 22:57:00,236 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 340 [2020-11-29 22:57:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:00,238 INFO L225 Difference]: With dead ends: 348 [2020-11-29 22:57:00,238 INFO L226 Difference]: Without dead ends: 347 [2020-11-29 22:57:00,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-11-29 22:57:00,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-11-29 22:57:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 346. [2020-11-29 22:57:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-11-29 22:57:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2020-11-29 22:57:00,246 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 340 [2020-11-29 22:57:00,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:00,246 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2020-11-29 22:57:00,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-11-29 22:57:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2020-11-29 22:57:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-11-29 22:57:00,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:00,249 INFO L422 BasicCegarLoop]: trace histogram [69, 68, 68, 68, 68, 1, 1, 1, 1] [2020-11-29 22:57:00,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:00,477 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash -864473947, now seen corresponding path program 68 times [2020-11-29 22:57:00,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:00,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151055584] [2020-11-29 22:57:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11526 backedges. 0 proven. 11526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:03,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151055584] [2020-11-29 22:57:03,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660664310] [2020-11-29 22:57:03,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:03,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:57:03,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:03,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 70 conjunts are in the unsatisfiable core [2020-11-29 22:57:03,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11526 backedges. 0 proven. 11526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:03,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:03,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2020-11-29 22:57:03,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39219270] [2020-11-29 22:57:03,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-29 22:57:03,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:03,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-29 22:57:03,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-11-29 22:57:03,656 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 72 states. [2020-11-29 22:57:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:03,961 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2020-11-29 22:57:03,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-11-29 22:57:03,962 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 345 [2020-11-29 22:57:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:03,963 INFO L225 Difference]: With dead ends: 353 [2020-11-29 22:57:03,964 INFO L226 Difference]: Without dead ends: 352 [2020-11-29 22:57:03,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-11-29 22:57:03,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-11-29 22:57:03,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 351. [2020-11-29 22:57:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-11-29 22:57:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2020-11-29 22:57:03,971 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 345 [2020-11-29 22:57:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:03,972 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2020-11-29 22:57:03,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-29 22:57:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2020-11-29 22:57:03,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-11-29 22:57:03,974 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:03,975 INFO L422 BasicCegarLoop]: trace histogram [70, 69, 69, 69, 69, 1, 1, 1, 1] [2020-11-29 22:57:04,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:04,175 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:04,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1221262705, now seen corresponding path program 69 times [2020-11-29 22:57:04,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:04,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020251742] [2020-11-29 22:57:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11868 backedges. 0 proven. 11868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:07,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020251742] [2020-11-29 22:57:07,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974837506] [2020-11-29 22:57:07,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:07,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2020-11-29 22:57:07,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:07,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 71 conjunts are in the unsatisfiable core [2020-11-29 22:57:07,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11868 backedges. 0 proven. 11868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:07,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:07,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2020-11-29 22:57:07,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46993511] [2020-11-29 22:57:07,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-11-29 22:57:07,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:07,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-11-29 22:57:07,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-11-29 22:57:07,541 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 73 states. [2020-11-29 22:57:07,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:07,901 INFO L93 Difference]: Finished difference Result 358 states and 358 transitions. [2020-11-29 22:57:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-11-29 22:57:07,902 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 350 [2020-11-29 22:57:07,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:07,903 INFO L225 Difference]: With dead ends: 358 [2020-11-29 22:57:07,903 INFO L226 Difference]: Without dead ends: 357 [2020-11-29 22:57:07,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-11-29 22:57:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-11-29 22:57:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 356. [2020-11-29 22:57:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-11-29 22:57:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-11-29 22:57:07,908 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 350 [2020-11-29 22:57:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:07,908 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-11-29 22:57:07,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-11-29 22:57:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-11-29 22:57:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-11-29 22:57:07,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:07,910 INFO L422 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 1, 1, 1, 1] [2020-11-29 22:57:08,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2020-11-29 22:57:08,114 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:08,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:08,114 INFO L82 PathProgramCache]: Analyzing trace with hash 590859301, now seen corresponding path program 70 times [2020-11-29 22:57:08,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:08,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105574034] [2020-11-29 22:57:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12215 backedges. 0 proven. 12215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:10,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105574034] [2020-11-29 22:57:10,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029549644] [2020-11-29 22:57:10,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:10,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:57:10,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:10,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 72 conjunts are in the unsatisfiable core [2020-11-29 22:57:10,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12215 backedges. 0 proven. 12215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:11,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:11,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2020-11-29 22:57:11,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529935144] [2020-11-29 22:57:11,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-11-29 22:57:11,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:11,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-11-29 22:57:11,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-11-29 22:57:11,019 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 74 states. [2020-11-29 22:57:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:11,389 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2020-11-29 22:57:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-29 22:57:11,389 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 355 [2020-11-29 22:57:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:11,391 INFO L225 Difference]: With dead ends: 363 [2020-11-29 22:57:11,391 INFO L226 Difference]: Without dead ends: 362 [2020-11-29 22:57:11,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-11-29 22:57:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-11-29 22:57:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2020-11-29 22:57:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-11-29 22:57:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2020-11-29 22:57:11,400 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 355 [2020-11-29 22:57:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:11,400 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2020-11-29 22:57:11,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-11-29 22:57:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2020-11-29 22:57:11,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-11-29 22:57:11,402 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:11,403 INFO L422 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 1, 1, 1, 1] [2020-11-29 22:57:11,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:11,622 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:11,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:11,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1513878031, now seen corresponding path program 71 times [2020-11-29 22:57:11,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:11,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999069281] [2020-11-29 22:57:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12567 backedges. 0 proven. 12567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:14,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999069281] [2020-11-29 22:57:14,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385888156] [2020-11-29 22:57:14,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:14,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2020-11-29 22:57:14,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:14,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 73 conjunts are in the unsatisfiable core [2020-11-29 22:57:14,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12567 backedges. 0 proven. 12567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:14,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:14,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2020-11-29 22:57:14,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230246272] [2020-11-29 22:57:14,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-11-29 22:57:14,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:14,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-11-29 22:57:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-11-29 22:57:14,733 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 75 states. [2020-11-29 22:57:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:15,139 INFO L93 Difference]: Finished difference Result 368 states and 368 transitions. [2020-11-29 22:57:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-11-29 22:57:15,140 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 360 [2020-11-29 22:57:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:15,142 INFO L225 Difference]: With dead ends: 368 [2020-11-29 22:57:15,142 INFO L226 Difference]: Without dead ends: 367 [2020-11-29 22:57:15,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-11-29 22:57:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-11-29 22:57:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 366. [2020-11-29 22:57:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-11-29 22:57:15,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 366 transitions. [2020-11-29 22:57:15,148 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 366 transitions. Word has length 360 [2020-11-29 22:57:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:15,148 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 366 transitions. [2020-11-29 22:57:15,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-11-29 22:57:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 366 transitions. [2020-11-29 22:57:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-11-29 22:57:15,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:15,150 INFO L422 BasicCegarLoop]: trace histogram [73, 72, 72, 72, 72, 1, 1, 1, 1] [2020-11-29 22:57:15,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:15,350 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:15,351 INFO L82 PathProgramCache]: Analyzing trace with hash 567610277, now seen corresponding path program 72 times [2020-11-29 22:57:15,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:15,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437141615] [2020-11-29 22:57:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12924 backedges. 0 proven. 12924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:18,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437141615] [2020-11-29 22:57:18,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221272754] [2020-11-29 22:57:18,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:18,671 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2020-11-29 22:57:18,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:18,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 74 conjunts are in the unsatisfiable core [2020-11-29 22:57:18,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12924 backedges. 0 proven. 12924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:18,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:18,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2020-11-29 22:57:18,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901714418] [2020-11-29 22:57:18,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-29 22:57:18,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:18,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-29 22:57:18,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-11-29 22:57:18,842 INFO L87 Difference]: Start difference. First operand 366 states and 366 transitions. Second operand 76 states. [2020-11-29 22:57:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:19,203 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2020-11-29 22:57:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-11-29 22:57:19,204 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 365 [2020-11-29 22:57:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:19,205 INFO L225 Difference]: With dead ends: 373 [2020-11-29 22:57:19,205 INFO L226 Difference]: Without dead ends: 372 [2020-11-29 22:57:19,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-11-29 22:57:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-11-29 22:57:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 371. [2020-11-29 22:57:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-11-29 22:57:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2020-11-29 22:57:19,211 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 365 [2020-11-29 22:57:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:19,212 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2020-11-29 22:57:19,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-29 22:57:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2020-11-29 22:57:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-11-29 22:57:19,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:19,214 INFO L422 BasicCegarLoop]: trace histogram [74, 73, 73, 73, 73, 1, 1, 1, 1] [2020-11-29 22:57:19,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:19,414 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:19,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1660780943, now seen corresponding path program 73 times [2020-11-29 22:57:19,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:19,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000493124] [2020-11-29 22:57:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13286 backedges. 0 proven. 13286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:22,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000493124] [2020-11-29 22:57:22,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093697156] [2020-11-29 22:57:22,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 75 conjunts are in the unsatisfiable core [2020-11-29 22:57:22,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 13286 backedges. 0 proven. 13286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:23,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:23,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2020-11-29 22:57:23,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221971799] [2020-11-29 22:57:23,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-11-29 22:57:23,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:23,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-11-29 22:57:23,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-11-29 22:57:23,144 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 77 states. [2020-11-29 22:57:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:23,504 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2020-11-29 22:57:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-11-29 22:57:23,505 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 370 [2020-11-29 22:57:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:23,507 INFO L225 Difference]: With dead ends: 378 [2020-11-29 22:57:23,507 INFO L226 Difference]: Without dead ends: 377 [2020-11-29 22:57:23,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-11-29 22:57:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-11-29 22:57:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 376. [2020-11-29 22:57:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-11-29 22:57:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2020-11-29 22:57:23,512 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 370 [2020-11-29 22:57:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:23,512 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2020-11-29 22:57:23,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-11-29 22:57:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2020-11-29 22:57:23,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-11-29 22:57:23,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:23,514 INFO L422 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 1, 1, 1, 1] [2020-11-29 22:57:23,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-11-29 22:57:23,715 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:23,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:23,715 INFO L82 PathProgramCache]: Analyzing trace with hash -91690203, now seen corresponding path program 74 times [2020-11-29 22:57:23,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:23,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576781323] [2020-11-29 22:57:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13653 backedges. 0 proven. 13653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:26,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576781323] [2020-11-29 22:57:26,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973690751] [2020-11-29 22:57:26,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:26,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:57:26,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:26,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 76 conjunts are in the unsatisfiable core [2020-11-29 22:57:26,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 13653 backedges. 0 proven. 13653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:27,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:27,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2020-11-29 22:57:27,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446818385] [2020-11-29 22:57:27,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-11-29 22:57:27,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:27,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-11-29 22:57:27,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-11-29 22:57:27,062 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 78 states. [2020-11-29 22:57:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:27,453 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2020-11-29 22:57:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-11-29 22:57:27,454 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 375 [2020-11-29 22:57:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:27,455 INFO L225 Difference]: With dead ends: 383 [2020-11-29 22:57:27,455 INFO L226 Difference]: Without dead ends: 382 [2020-11-29 22:57:27,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-11-29 22:57:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-11-29 22:57:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 381. [2020-11-29 22:57:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-11-29 22:57:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2020-11-29 22:57:27,461 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 375 [2020-11-29 22:57:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:27,461 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2020-11-29 22:57:27,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-11-29 22:57:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2020-11-29 22:57:27,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-11-29 22:57:27,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:27,464 INFO L422 BasicCegarLoop]: trace histogram [76, 75, 75, 75, 75, 1, 1, 1, 1] [2020-11-29 22:57:27,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:27,665 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:27,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1622257935, now seen corresponding path program 75 times [2020-11-29 22:57:27,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:27,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989042869] [2020-11-29 22:57:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 14025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:30,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989042869] [2020-11-29 22:57:30,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467564445] [2020-11-29 22:57:30,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:31,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2020-11-29 22:57:31,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:31,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 77 conjunts are in the unsatisfiable core [2020-11-29 22:57:31,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 14025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:31,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:31,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2020-11-29 22:57:31,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757628721] [2020-11-29 22:57:31,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-11-29 22:57:31,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:31,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-11-29 22:57:31,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-11-29 22:57:31,234 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 79 states. [2020-11-29 22:57:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:31,555 INFO L93 Difference]: Finished difference Result 388 states and 388 transitions. [2020-11-29 22:57:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-11-29 22:57:31,556 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 380 [2020-11-29 22:57:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:31,557 INFO L225 Difference]: With dead ends: 388 [2020-11-29 22:57:31,557 INFO L226 Difference]: Without dead ends: 387 [2020-11-29 22:57:31,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-11-29 22:57:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-11-29 22:57:31,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 386. [2020-11-29 22:57:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-11-29 22:57:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2020-11-29 22:57:31,563 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 380 [2020-11-29 22:57:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:31,563 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2020-11-29 22:57:31,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-11-29 22:57:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2020-11-29 22:57:31,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-11-29 22:57:31,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:31,565 INFO L422 BasicCegarLoop]: trace histogram [77, 76, 76, 76, 76, 1, 1, 1, 1] [2020-11-29 22:57:31,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-11-29 22:57:31,766 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:31,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:31,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2039179941, now seen corresponding path program 76 times [2020-11-29 22:57:31,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:31,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174356242] [2020-11-29 22:57:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14402 backedges. 0 proven. 14402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:35,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174356242] [2020-11-29 22:57:35,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062017409] [2020-11-29 22:57:35,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:35,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:57:35,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:35,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 78 conjunts are in the unsatisfiable core [2020-11-29 22:57:35,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14402 backedges. 0 proven. 14402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:35,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:35,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2020-11-29 22:57:35,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133845043] [2020-11-29 22:57:35,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-11-29 22:57:35,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:35,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-11-29 22:57:35,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-11-29 22:57:35,354 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 80 states. [2020-11-29 22:57:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:35,668 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2020-11-29 22:57:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-29 22:57:35,669 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 385 [2020-11-29 22:57:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:35,670 INFO L225 Difference]: With dead ends: 393 [2020-11-29 22:57:35,670 INFO L226 Difference]: Without dead ends: 392 [2020-11-29 22:57:35,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-11-29 22:57:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-11-29 22:57:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 391. [2020-11-29 22:57:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-11-29 22:57:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2020-11-29 22:57:35,676 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 385 [2020-11-29 22:57:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:35,677 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2020-11-29 22:57:35,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-11-29 22:57:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2020-11-29 22:57:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-11-29 22:57:35,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:35,679 INFO L422 BasicCegarLoop]: trace histogram [78, 77, 77, 77, 77, 1, 1, 1, 1] [2020-11-29 22:57:35,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:35,879 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:35,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:35,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1016103055, now seen corresponding path program 77 times [2020-11-29 22:57:35,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:35,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219510864] [2020-11-29 22:57:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14784 backedges. 0 proven. 14784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:39,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219510864] [2020-11-29 22:57:39,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573602148] [2020-11-29 22:57:39,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:39,525 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2020-11-29 22:57:39,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:39,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 79 conjunts are in the unsatisfiable core [2020-11-29 22:57:39,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14784 backedges. 0 proven. 14784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:39,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:39,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2020-11-29 22:57:39,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660389586] [2020-11-29 22:57:39,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-11-29 22:57:39,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:39,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-11-29 22:57:39,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-11-29 22:57:39,699 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 81 states. [2020-11-29 22:57:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:40,040 INFO L93 Difference]: Finished difference Result 398 states and 398 transitions. [2020-11-29 22:57:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-11-29 22:57:40,041 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 390 [2020-11-29 22:57:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:40,043 INFO L225 Difference]: With dead ends: 398 [2020-11-29 22:57:40,043 INFO L226 Difference]: Without dead ends: 397 [2020-11-29 22:57:40,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-11-29 22:57:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-11-29 22:57:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 396. [2020-11-29 22:57:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-11-29 22:57:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 396 transitions. [2020-11-29 22:57:40,048 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 396 transitions. Word has length 390 [2020-11-29 22:57:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:40,049 INFO L481 AbstractCegarLoop]: Abstraction has 396 states and 396 transitions. [2020-11-29 22:57:40,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-11-29 22:57:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 396 transitions. [2020-11-29 22:57:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-11-29 22:57:40,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:40,050 INFO L422 BasicCegarLoop]: trace histogram [79, 78, 78, 78, 78, 1, 1, 1, 1] [2020-11-29 22:57:40,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:40,251 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2062251483, now seen corresponding path program 78 times [2020-11-29 22:57:40,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:40,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433767865] [2020-11-29 22:57:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15171 backedges. 0 proven. 15171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:43,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433767865] [2020-11-29 22:57:43,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868542153] [2020-11-29 22:57:43,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:43,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2020-11-29 22:57:43,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:43,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 80 conjunts are in the unsatisfiable core [2020-11-29 22:57:43,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15171 backedges. 0 proven. 15171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:44,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:44,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2020-11-29 22:57:44,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884860029] [2020-11-29 22:57:44,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-29 22:57:44,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:44,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-29 22:57:44,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-11-29 22:57:44,157 INFO L87 Difference]: Start difference. First operand 396 states and 396 transitions. Second operand 82 states. [2020-11-29 22:57:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:44,467 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2020-11-29 22:57:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-11-29 22:57:44,467 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 395 [2020-11-29 22:57:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:44,469 INFO L225 Difference]: With dead ends: 403 [2020-11-29 22:57:44,469 INFO L226 Difference]: Without dead ends: 402 [2020-11-29 22:57:44,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-11-29 22:57:44,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-11-29 22:57:44,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 401. [2020-11-29 22:57:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-11-29 22:57:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-11-29 22:57:44,475 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 395 [2020-11-29 22:57:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:44,475 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-11-29 22:57:44,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-29 22:57:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-11-29 22:57:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-11-29 22:57:44,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:44,477 INFO L422 BasicCegarLoop]: trace histogram [80, 79, 79, 79, 79, 1, 1, 1, 1] [2020-11-29 22:57:44,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:44,678 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:44,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:44,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1177423857, now seen corresponding path program 79 times [2020-11-29 22:57:44,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:44,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862283204] [2020-11-29 22:57:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 15563 backedges. 0 proven. 15563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:48,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862283204] [2020-11-29 22:57:48,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991184628] [2020-11-29 22:57:48,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:48,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 81 conjunts are in the unsatisfiable core [2020-11-29 22:57:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 15563 backedges. 0 proven. 15563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:48,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:48,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2020-11-29 22:57:48,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247214478] [2020-11-29 22:57:48,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-11-29 22:57:48,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:48,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-11-29 22:57:48,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-11-29 22:57:48,658 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 83 states. [2020-11-29 22:57:49,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:49,167 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2020-11-29 22:57:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-11-29 22:57:49,167 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 400 [2020-11-29 22:57:49,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:49,169 INFO L225 Difference]: With dead ends: 408 [2020-11-29 22:57:49,169 INFO L226 Difference]: Without dead ends: 407 [2020-11-29 22:57:49,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-11-29 22:57:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-11-29 22:57:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 406. [2020-11-29 22:57:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-11-29 22:57:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 406 transitions. [2020-11-29 22:57:49,177 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 406 transitions. Word has length 400 [2020-11-29 22:57:49,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:49,177 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 406 transitions. [2020-11-29 22:57:49,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-11-29 22:57:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 406 transitions. [2020-11-29 22:57:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-11-29 22:57:49,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:49,179 INFO L422 BasicCegarLoop]: trace histogram [81, 80, 80, 80, 80, 1, 1, 1, 1] [2020-11-29 22:57:49,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:49,380 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:49,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1654896219, now seen corresponding path program 80 times [2020-11-29 22:57:49,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:49,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063789601] [2020-11-29 22:57:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15960 backedges. 0 proven. 15960 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:52,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063789601] [2020-11-29 22:57:52,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428395848] [2020-11-29 22:57:52,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:53,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:57:53,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:53,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 82 conjunts are in the unsatisfiable core [2020-11-29 22:57:53,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15960 backedges. 0 proven. 15960 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:53,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:53,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2020-11-29 22:57:53,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932946098] [2020-11-29 22:57:53,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-11-29 22:57:53,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:53,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-11-29 22:57:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-11-29 22:57:53,290 INFO L87 Difference]: Start difference. First operand 406 states and 406 transitions. Second operand 84 states. [2020-11-29 22:57:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:53,633 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2020-11-29 22:57:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-11-29 22:57:53,633 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 405 [2020-11-29 22:57:53,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:53,635 INFO L225 Difference]: With dead ends: 413 [2020-11-29 22:57:53,635 INFO L226 Difference]: Without dead ends: 412 [2020-11-29 22:57:53,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-11-29 22:57:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-29 22:57:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2020-11-29 22:57:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-11-29 22:57:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2020-11-29 22:57:53,641 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 405 [2020-11-29 22:57:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:53,642 INFO L481 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2020-11-29 22:57:53,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-11-29 22:57:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2020-11-29 22:57:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-11-29 22:57:53,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:53,644 INFO L422 BasicCegarLoop]: trace histogram [82, 81, 81, 81, 81, 1, 1, 1, 1] [2020-11-29 22:57:53,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:53,845 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:53,845 INFO L82 PathProgramCache]: Analyzing trace with hash 173146225, now seen corresponding path program 81 times [2020-11-29 22:57:53,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:53,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65413458] [2020-11-29 22:57:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:57:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16362 backedges. 0 proven. 16362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:57,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65413458] [2020-11-29 22:57:57,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72781429] [2020-11-29 22:57:57,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:57,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2020-11-29 22:57:57,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:57:57,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 83 conjunts are in the unsatisfiable core [2020-11-29 22:57:57,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:57:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16362 backedges. 0 proven. 16362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:57:58,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:57:58,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2020-11-29 22:57:58,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274370354] [2020-11-29 22:57:58,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-11-29 22:57:58,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:57:58,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-11-29 22:57:58,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-11-29 22:57:58,167 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 85 states. [2020-11-29 22:57:58,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:57:58,501 INFO L93 Difference]: Finished difference Result 418 states and 418 transitions. [2020-11-29 22:57:58,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-11-29 22:57:58,502 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 410 [2020-11-29 22:57:58,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:57:58,504 INFO L225 Difference]: With dead ends: 418 [2020-11-29 22:57:58,504 INFO L226 Difference]: Without dead ends: 417 [2020-11-29 22:57:58,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-11-29 22:57:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-11-29 22:57:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-11-29 22:57:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-11-29 22:57:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 416 transitions. [2020-11-29 22:57:58,510 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 416 transitions. Word has length 410 [2020-11-29 22:57:58,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:57:58,511 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 416 transitions. [2020-11-29 22:57:58,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-11-29 22:57:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 416 transitions. [2020-11-29 22:57:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-11-29 22:57:58,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:57:58,513 INFO L422 BasicCegarLoop]: trace histogram [83, 82, 82, 82, 82, 1, 1, 1, 1] [2020-11-29 22:57:58,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:57:58,714 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:57:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:57:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1553639717, now seen corresponding path program 82 times [2020-11-29 22:57:58,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:57:58,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417993026] [2020-11-29 22:57:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:57:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16769 backedges. 0 proven. 16769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:02,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417993026] [2020-11-29 22:58:02,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476107565] [2020-11-29 22:58:02,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:02,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:58:02,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:02,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 84 conjunts are in the unsatisfiable core [2020-11-29 22:58:02,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16769 backedges. 0 proven. 16769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:02,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:02,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2020-11-29 22:58:02,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606847393] [2020-11-29 22:58:02,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-11-29 22:58:02,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:02,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-11-29 22:58:02,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-11-29 22:58:02,944 INFO L87 Difference]: Start difference. First operand 416 states and 416 transitions. Second operand 86 states. [2020-11-29 22:58:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:03,277 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2020-11-29 22:58:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-11-29 22:58:03,278 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 415 [2020-11-29 22:58:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:03,280 INFO L225 Difference]: With dead ends: 423 [2020-11-29 22:58:03,280 INFO L226 Difference]: Without dead ends: 422 [2020-11-29 22:58:03,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-11-29 22:58:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-11-29 22:58:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 421. [2020-11-29 22:58:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-11-29 22:58:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2020-11-29 22:58:03,286 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 415 [2020-11-29 22:58:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:03,286 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2020-11-29 22:58:03,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-11-29 22:58:03,286 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2020-11-29 22:58:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-11-29 22:58:03,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:03,288 INFO L422 BasicCegarLoop]: trace histogram [84, 83, 83, 83, 83, 1, 1, 1, 1] [2020-11-29 22:58:03,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:03,488 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:03,489 INFO L82 PathProgramCache]: Analyzing trace with hash 413356273, now seen corresponding path program 83 times [2020-11-29 22:58:03,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:03,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895599606] [2020-11-29 22:58:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 17181 backedges. 0 proven. 17181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:07,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895599606] [2020-11-29 22:58:07,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564474313] [2020-11-29 22:58:07,405 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:07,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2020-11-29 22:58:07,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:07,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 85 conjunts are in the unsatisfiable core [2020-11-29 22:58:07,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 17181 backedges. 0 proven. 17181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:07,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:07,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2020-11-29 22:58:07,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218497537] [2020-11-29 22:58:07,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-11-29 22:58:07,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:07,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-11-29 22:58:07,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-11-29 22:58:07,903 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 87 states. [2020-11-29 22:58:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:08,387 INFO L93 Difference]: Finished difference Result 428 states and 428 transitions. [2020-11-29 22:58:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-11-29 22:58:08,387 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 420 [2020-11-29 22:58:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:08,389 INFO L225 Difference]: With dead ends: 428 [2020-11-29 22:58:08,389 INFO L226 Difference]: Without dead ends: 427 [2020-11-29 22:58:08,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-11-29 22:58:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-11-29 22:58:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 426. [2020-11-29 22:58:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-11-29 22:58:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 426 transitions. [2020-11-29 22:58:08,395 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 426 transitions. Word has length 420 [2020-11-29 22:58:08,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:08,395 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 426 transitions. [2020-11-29 22:58:08,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-11-29 22:58:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 426 transitions. [2020-11-29 22:58:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-11-29 22:58:08,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:08,397 INFO L422 BasicCegarLoop]: trace histogram [85, 84, 84, 84, 84, 1, 1, 1, 1] [2020-11-29 22:58:08,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-11-29 22:58:08,598 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:08,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:08,598 INFO L82 PathProgramCache]: Analyzing trace with hash -150493019, now seen corresponding path program 84 times [2020-11-29 22:58:08,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:08,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726768055] [2020-11-29 22:58:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 17598 backedges. 0 proven. 17598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:12,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726768055] [2020-11-29 22:58:12,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653084683] [2020-11-29 22:58:12,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:12,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2020-11-29 22:58:12,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:12,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 86 conjunts are in the unsatisfiable core [2020-11-29 22:58:12,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 17598 backedges. 0 proven. 17598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:13,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:13,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2020-11-29 22:58:13,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479872429] [2020-11-29 22:58:13,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-11-29 22:58:13,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-11-29 22:58:13,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-11-29 22:58:13,078 INFO L87 Difference]: Start difference. First operand 426 states and 426 transitions. Second operand 88 states. [2020-11-29 22:58:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:13,478 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2020-11-29 22:58:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-11-29 22:58:13,479 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 425 [2020-11-29 22:58:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:13,480 INFO L225 Difference]: With dead ends: 433 [2020-11-29 22:58:13,480 INFO L226 Difference]: Without dead ends: 432 [2020-11-29 22:58:13,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-11-29 22:58:13,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-11-29 22:58:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 431. [2020-11-29 22:58:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-11-29 22:58:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2020-11-29 22:58:13,486 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 425 [2020-11-29 22:58:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:13,486 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2020-11-29 22:58:13,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-11-29 22:58:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2020-11-29 22:58:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-11-29 22:58:13,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:13,488 INFO L422 BasicCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1] [2020-11-29 22:58:13,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:13,689 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:13,689 INFO L82 PathProgramCache]: Analyzing trace with hash 535429489, now seen corresponding path program 85 times [2020-11-29 22:58:13,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:13,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199115322] [2020-11-29 22:58:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:17,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199115322] [2020-11-29 22:58:17,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982180386] [2020-11-29 22:58:17,928 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:18,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 87 conjunts are in the unsatisfiable core [2020-11-29 22:58:18,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:18,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:18,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2020-11-29 22:58:18,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471344789] [2020-11-29 22:58:18,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-11-29 22:58:18,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:18,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-11-29 22:58:18,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-11-29 22:58:18,291 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 89 states. [2020-11-29 22:58:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:18,858 INFO L93 Difference]: Finished difference Result 438 states and 438 transitions. [2020-11-29 22:58:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-11-29 22:58:18,859 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 430 [2020-11-29 22:58:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:18,861 INFO L225 Difference]: With dead ends: 438 [2020-11-29 22:58:18,861 INFO L226 Difference]: Without dead ends: 437 [2020-11-29 22:58:18,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-11-29 22:58:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-11-29 22:58:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 436. [2020-11-29 22:58:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-11-29 22:58:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 436 transitions. [2020-11-29 22:58:18,866 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 436 transitions. Word has length 430 [2020-11-29 22:58:18,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:18,867 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 436 transitions. [2020-11-29 22:58:18,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-11-29 22:58:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 436 transitions. [2020-11-29 22:58:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-11-29 22:58:18,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:18,869 INFO L422 BasicCegarLoop]: trace histogram [87, 86, 86, 86, 86, 1, 1, 1, 1] [2020-11-29 22:58:19,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-11-29 22:58:19,069 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:19,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:19,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1160034267, now seen corresponding path program 86 times [2020-11-29 22:58:19,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:19,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66751599] [2020-11-29 22:58:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 18447 backedges. 0 proven. 18447 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:23,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66751599] [2020-11-29 22:58:23,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354055787] [2020-11-29 22:58:23,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:23,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:58:23,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:23,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 88 conjunts are in the unsatisfiable core [2020-11-29 22:58:23,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18447 backedges. 0 proven. 18447 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:23,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:23,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2020-11-29 22:58:23,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104074896] [2020-11-29 22:58:23,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-11-29 22:58:23,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:23,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-11-29 22:58:23,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-11-29 22:58:23,794 INFO L87 Difference]: Start difference. First operand 436 states and 436 transitions. Second operand 90 states. [2020-11-29 22:58:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:24,385 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2020-11-29 22:58:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-11-29 22:58:24,386 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 435 [2020-11-29 22:58:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:24,388 INFO L225 Difference]: With dead ends: 443 [2020-11-29 22:58:24,388 INFO L226 Difference]: Without dead ends: 442 [2020-11-29 22:58:24,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-11-29 22:58:24,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-11-29 22:58:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 441. [2020-11-29 22:58:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-11-29 22:58:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 441 transitions. [2020-11-29 22:58:24,394 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 441 transitions. Word has length 435 [2020-11-29 22:58:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:24,394 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 441 transitions. [2020-11-29 22:58:24,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-11-29 22:58:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 441 transitions. [2020-11-29 22:58:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-11-29 22:58:24,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:24,396 INFO L422 BasicCegarLoop]: trace histogram [88, 87, 87, 87, 87, 1, 1, 1, 1] [2020-11-29 22:58:24,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:24,597 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:24,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash -185724431, now seen corresponding path program 87 times [2020-11-29 22:58:24,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:24,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288505894] [2020-11-29 22:58:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18879 backedges. 0 proven. 18879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:29,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288505894] [2020-11-29 22:58:29,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656365674] [2020-11-29 22:58:29,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:29,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2020-11-29 22:58:29,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:29,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 89 conjunts are in the unsatisfiable core [2020-11-29 22:58:29,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18879 backedges. 0 proven. 18879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:29,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:29,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2020-11-29 22:58:29,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141532144] [2020-11-29 22:58:29,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-11-29 22:58:29,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:29,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-11-29 22:58:29,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-11-29 22:58:29,686 INFO L87 Difference]: Start difference. First operand 441 states and 441 transitions. Second operand 91 states. [2020-11-29 22:58:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:30,310 INFO L93 Difference]: Finished difference Result 448 states and 448 transitions. [2020-11-29 22:58:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-11-29 22:58:30,311 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 440 [2020-11-29 22:58:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:30,313 INFO L225 Difference]: With dead ends: 448 [2020-11-29 22:58:30,313 INFO L226 Difference]: Without dead ends: 447 [2020-11-29 22:58:30,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-11-29 22:58:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-11-29 22:58:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 446. [2020-11-29 22:58:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-11-29 22:58:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-11-29 22:58:30,319 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 440 [2020-11-29 22:58:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:30,319 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-11-29 22:58:30,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-11-29 22:58:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-11-29 22:58:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-11-29 22:58:30,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:30,322 INFO L422 BasicCegarLoop]: trace histogram [89, 88, 88, 88, 88, 1, 1, 1, 1] [2020-11-29 22:58:30,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:30,522 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:30,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1873967195, now seen corresponding path program 88 times [2020-11-29 22:58:30,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:30,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274160338] [2020-11-29 22:58:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 19316 backedges. 0 proven. 19316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:34,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274160338] [2020-11-29 22:58:34,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769480257] [2020-11-29 22:58:34,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:35,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:58:35,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:35,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 90 conjunts are in the unsatisfiable core [2020-11-29 22:58:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 19316 backedges. 0 proven. 19316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:35,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:35,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2020-11-29 22:58:35,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591352740] [2020-11-29 22:58:35,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-11-29 22:58:35,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:35,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-11-29 22:58:35,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-11-29 22:58:35,380 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 92 states. [2020-11-29 22:58:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:35,744 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2020-11-29 22:58:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-11-29 22:58:35,744 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 445 [2020-11-29 22:58:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:35,746 INFO L225 Difference]: With dead ends: 453 [2020-11-29 22:58:35,746 INFO L226 Difference]: Without dead ends: 452 [2020-11-29 22:58:35,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-11-29 22:58:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-11-29 22:58:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2020-11-29 22:58:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-11-29 22:58:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2020-11-29 22:58:35,752 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 445 [2020-11-29 22:58:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:35,753 INFO L481 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2020-11-29 22:58:35,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-11-29 22:58:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2020-11-29 22:58:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-11-29 22:58:35,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:35,755 INFO L422 BasicCegarLoop]: trace histogram [90, 89, 89, 89, 89, 1, 1, 1, 1] [2020-11-29 22:58:35,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:35,955 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:35,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:35,956 INFO L82 PathProgramCache]: Analyzing trace with hash 309822065, now seen corresponding path program 89 times [2020-11-29 22:58:35,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:35,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598114941] [2020-11-29 22:58:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 19758 backedges. 0 proven. 19758 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:40,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598114941] [2020-11-29 22:58:40,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182767825] [2020-11-29 22:58:40,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:40,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2020-11-29 22:58:40,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:40,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 91 conjunts are in the unsatisfiable core [2020-11-29 22:58:40,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 19758 backedges. 0 proven. 19758 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:40,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:40,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2020-11-29 22:58:40,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510279006] [2020-11-29 22:58:40,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-11-29 22:58:40,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:40,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-11-29 22:58:40,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2020-11-29 22:58:40,905 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 93 states. [2020-11-29 22:58:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:41,500 INFO L93 Difference]: Finished difference Result 458 states and 458 transitions. [2020-11-29 22:58:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-11-29 22:58:41,501 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 450 [2020-11-29 22:58:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:41,503 INFO L225 Difference]: With dead ends: 458 [2020-11-29 22:58:41,503 INFO L226 Difference]: Without dead ends: 457 [2020-11-29 22:58:41,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2020-11-29 22:58:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-11-29 22:58:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 456. [2020-11-29 22:58:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-11-29 22:58:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 456 transitions. [2020-11-29 22:58:41,509 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 456 transitions. Word has length 450 [2020-11-29 22:58:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:41,509 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 456 transitions. [2020-11-29 22:58:41,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-11-29 22:58:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 456 transitions. [2020-11-29 22:58:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-11-29 22:58:41,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:41,511 INFO L422 BasicCegarLoop]: trace histogram [91, 90, 90, 90, 90, 1, 1, 1, 1] [2020-11-29 22:58:41,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:41,712 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2039899941, now seen corresponding path program 90 times [2020-11-29 22:58:41,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:41,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400676392] [2020-11-29 22:58:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20205 backedges. 0 proven. 20205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400676392] [2020-11-29 22:58:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206485533] [2020-11-29 22:58:46,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:46,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2020-11-29 22:58:46,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:46,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 92 conjunts are in the unsatisfiable core [2020-11-29 22:58:46,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20205 backedges. 0 proven. 20205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:46,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:46,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2020-11-29 22:58:46,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780542192] [2020-11-29 22:58:46,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-11-29 22:58:46,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:46,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-11-29 22:58:46,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2020-11-29 22:58:46,734 INFO L87 Difference]: Start difference. First operand 456 states and 456 transitions. Second operand 94 states. [2020-11-29 22:58:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:47,375 INFO L93 Difference]: Finished difference Result 463 states and 463 transitions. [2020-11-29 22:58:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-11-29 22:58:47,376 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 455 [2020-11-29 22:58:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:47,378 INFO L225 Difference]: With dead ends: 463 [2020-11-29 22:58:47,378 INFO L226 Difference]: Without dead ends: 462 [2020-11-29 22:58:47,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2020-11-29 22:58:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-11-29 22:58:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2020-11-29 22:58:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-11-29 22:58:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 461 transitions. [2020-11-29 22:58:47,384 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 461 transitions. Word has length 455 [2020-11-29 22:58:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:47,384 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 461 transitions. [2020-11-29 22:58:47,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-11-29 22:58:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 461 transitions. [2020-11-29 22:58:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-11-29 22:58:47,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:47,386 INFO L422 BasicCegarLoop]: trace histogram [92, 91, 91, 91, 91, 1, 1, 1, 1] [2020-11-29 22:58:47,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2020-11-29 22:58:47,587 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash 424563441, now seen corresponding path program 91 times [2020-11-29 22:58:47,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:47,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642470001] [2020-11-29 22:58:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 20657 backedges. 0 proven. 20657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:52,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642470001] [2020-11-29 22:58:52,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628957114] [2020-11-29 22:58:52,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:52,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 93 conjunts are in the unsatisfiable core [2020-11-29 22:58:52,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 20657 backedges. 0 proven. 20657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:52,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:52,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2020-11-29 22:58:52,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150400935] [2020-11-29 22:58:52,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-11-29 22:58:52,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:52,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-11-29 22:58:52,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2020-11-29 22:58:52,614 INFO L87 Difference]: Start difference. First operand 461 states and 461 transitions. Second operand 95 states. [2020-11-29 22:58:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:53,276 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2020-11-29 22:58:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-11-29 22:58:53,277 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 460 [2020-11-29 22:58:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:53,279 INFO L225 Difference]: With dead ends: 468 [2020-11-29 22:58:53,279 INFO L226 Difference]: Without dead ends: 467 [2020-11-29 22:58:53,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2020-11-29 22:58:53,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-11-29 22:58:53,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 466. [2020-11-29 22:58:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-11-29 22:58:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 466 transitions. [2020-11-29 22:58:53,285 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 466 transitions. Word has length 460 [2020-11-29 22:58:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:53,286 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 466 transitions. [2020-11-29 22:58:53,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-11-29 22:58:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 466 transitions. [2020-11-29 22:58:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-11-29 22:58:53,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:53,288 INFO L422 BasicCegarLoop]: trace histogram [93, 92, 92, 92, 92, 1, 1, 1, 1] [2020-11-29 22:58:53,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:53,489 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:53,489 INFO L82 PathProgramCache]: Analyzing trace with hash 317580965, now seen corresponding path program 92 times [2020-11-29 22:58:53,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:53,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216310997] [2020-11-29 22:58:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:58:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 21114 backedges. 0 proven. 21114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:58,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216310997] [2020-11-29 22:58:58,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979058462] [2020-11-29 22:58:58,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:58:58,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:58:58,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:58:58,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 94 conjunts are in the unsatisfiable core [2020-11-29 22:58:58,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:58:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 21114 backedges. 0 proven. 21114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:58:58,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:58:58,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2020-11-29 22:58:58,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599955787] [2020-11-29 22:58:58,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-11-29 22:58:58,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:58:58,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-11-29 22:58:58,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2020-11-29 22:58:58,665 INFO L87 Difference]: Start difference. First operand 466 states and 466 transitions. Second operand 96 states. [2020-11-29 22:58:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:58:59,246 INFO L93 Difference]: Finished difference Result 473 states and 473 transitions. [2020-11-29 22:58:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-11-29 22:58:59,247 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 465 [2020-11-29 22:58:59,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:58:59,249 INFO L225 Difference]: With dead ends: 473 [2020-11-29 22:58:59,249 INFO L226 Difference]: Without dead ends: 472 [2020-11-29 22:58:59,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2020-11-29 22:58:59,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-11-29 22:58:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 471. [2020-11-29 22:58:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-11-29 22:58:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 471 transitions. [2020-11-29 22:58:59,255 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 471 transitions. Word has length 465 [2020-11-29 22:58:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:58:59,255 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 471 transitions. [2020-11-29 22:58:59,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-11-29 22:58:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 471 transitions. [2020-11-29 22:58:59,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-11-29 22:58:59,257 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:58:59,257 INFO L422 BasicCegarLoop]: trace histogram [94, 93, 93, 93, 93, 1, 1, 1, 1] [2020-11-29 22:58:59,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2020-11-29 22:58:59,458 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:58:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:58:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1346012017, now seen corresponding path program 93 times [2020-11-29 22:58:59,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:58:59,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665947582] [2020-11-29 22:58:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:58:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 21576 backedges. 0 proven. 21576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:04,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665947582] [2020-11-29 22:59:04,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730218941] [2020-11-29 22:59:04,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:04,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2020-11-29 22:59:04,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:59:04,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 95 conjunts are in the unsatisfiable core [2020-11-29 22:59:04,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:59:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 21576 backedges. 0 proven. 21576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:04,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:59:04,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2020-11-29 22:59:04,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540049759] [2020-11-29 22:59:04,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-11-29 22:59:04,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:59:04,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-11-29 22:59:04,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2020-11-29 22:59:04,984 INFO L87 Difference]: Start difference. First operand 471 states and 471 transitions. Second operand 97 states. [2020-11-29 22:59:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:59:05,486 INFO L93 Difference]: Finished difference Result 478 states and 478 transitions. [2020-11-29 22:59:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-11-29 22:59:05,487 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 470 [2020-11-29 22:59:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:59:05,489 INFO L225 Difference]: With dead ends: 478 [2020-11-29 22:59:05,489 INFO L226 Difference]: Without dead ends: 477 [2020-11-29 22:59:05,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2020-11-29 22:59:05,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-11-29 22:59:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 476. [2020-11-29 22:59:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-11-29 22:59:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 476 transitions. [2020-11-29 22:59:05,495 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 476 transitions. Word has length 470 [2020-11-29 22:59:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:59:05,495 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 476 transitions. [2020-11-29 22:59:05,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-11-29 22:59:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 476 transitions. [2020-11-29 22:59:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-11-29 22:59:05,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:59:05,497 INFO L422 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2020-11-29 22:59:05,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:05,698 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:59:05,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:59:05,698 INFO L82 PathProgramCache]: Analyzing trace with hash 311166501, now seen corresponding path program 94 times [2020-11-29 22:59:05,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:59:05,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964931629] [2020-11-29 22:59:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:59:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:10,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964931629] [2020-11-29 22:59:10,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244495776] [2020-11-29 22:59:10,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:10,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:59:10,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:59:10,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 96 conjunts are in the unsatisfiable core [2020-11-29 22:59:10,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:59:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:11,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:59:11,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2020-11-29 22:59:11,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926428206] [2020-11-29 22:59:11,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-11-29 22:59:11,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:59:11,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-11-29 22:59:11,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2020-11-29 22:59:11,101 INFO L87 Difference]: Start difference. First operand 476 states and 476 transitions. Second operand 98 states. [2020-11-29 22:59:11,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:59:11,570 INFO L93 Difference]: Finished difference Result 483 states and 483 transitions. [2020-11-29 22:59:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-11-29 22:59:11,570 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 475 [2020-11-29 22:59:11,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:59:11,572 INFO L225 Difference]: With dead ends: 483 [2020-11-29 22:59:11,572 INFO L226 Difference]: Without dead ends: 482 [2020-11-29 22:59:11,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2020-11-29 22:59:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-11-29 22:59:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 481. [2020-11-29 22:59:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-11-29 22:59:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 481 transitions. [2020-11-29 22:59:11,579 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 481 transitions. Word has length 475 [2020-11-29 22:59:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:59:11,579 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 481 transitions. [2020-11-29 22:59:11,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-11-29 22:59:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 481 transitions. [2020-11-29 22:59:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-11-29 22:59:11,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:59:11,582 INFO L422 BasicCegarLoop]: trace histogram [96, 95, 95, 95, 95, 1, 1, 1, 1] [2020-11-29 22:59:11,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:11,782 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:59:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:59:11,783 INFO L82 PathProgramCache]: Analyzing trace with hash 604247025, now seen corresponding path program 95 times [2020-11-29 22:59:11,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:59:11,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410481088] [2020-11-29 22:59:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:59:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 22515 backedges. 0 proven. 22515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:16,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410481088] [2020-11-29 22:59:16,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978388057] [2020-11-29 22:59:16,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:17,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2020-11-29 22:59:17,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:59:17,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 97 conjunts are in the unsatisfiable core [2020-11-29 22:59:17,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:59:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22515 backedges. 0 proven. 22515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:17,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:59:17,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2020-11-29 22:59:17,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781687248] [2020-11-29 22:59:17,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-11-29 22:59:17,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:59:17,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-11-29 22:59:17,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2020-11-29 22:59:17,565 INFO L87 Difference]: Start difference. First operand 481 states and 481 transitions. Second operand 99 states. [2020-11-29 22:59:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:59:18,111 INFO L93 Difference]: Finished difference Result 488 states and 488 transitions. [2020-11-29 22:59:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-11-29 22:59:18,112 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 480 [2020-11-29 22:59:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:59:18,114 INFO L225 Difference]: With dead ends: 488 [2020-11-29 22:59:18,115 INFO L226 Difference]: Without dead ends: 487 [2020-11-29 22:59:18,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2020-11-29 22:59:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-11-29 22:59:18,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2020-11-29 22:59:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-11-29 22:59:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 486 transitions. [2020-11-29 22:59:18,123 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 486 transitions. Word has length 480 [2020-11-29 22:59:18,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:59:18,124 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 486 transitions. [2020-11-29 22:59:18,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-11-29 22:59:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 486 transitions. [2020-11-29 22:59:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-11-29 22:59:18,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:59:18,127 INFO L422 BasicCegarLoop]: trace histogram [97, 96, 96, 96, 96, 1, 1, 1, 1] [2020-11-29 22:59:18,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2020-11-29 22:59:18,329 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:59:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:59:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash -928463451, now seen corresponding path program 96 times [2020-11-29 22:59:18,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:59:18,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139875260] [2020-11-29 22:59:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:59:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 22992 backedges. 0 proven. 22992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:23,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139875260] [2020-11-29 22:59:23,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414195325] [2020-11-29 22:59:23,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:24,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2020-11-29 22:59:24,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:59:24,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 98 conjunts are in the unsatisfiable core [2020-11-29 22:59:24,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:59:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 22992 backedges. 0 proven. 22992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:24,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:59:24,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2020-11-29 22:59:24,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311560335] [2020-11-29 22:59:24,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 100 states [2020-11-29 22:59:24,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:59:24,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2020-11-29 22:59:24,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2020-11-29 22:59:24,248 INFO L87 Difference]: Start difference. First operand 486 states and 486 transitions. Second operand 100 states. [2020-11-29 22:59:24,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:59:24,754 INFO L93 Difference]: Finished difference Result 493 states and 493 transitions. [2020-11-29 22:59:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-11-29 22:59:24,755 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 485 [2020-11-29 22:59:24,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:59:24,757 INFO L225 Difference]: With dead ends: 493 [2020-11-29 22:59:24,757 INFO L226 Difference]: Without dead ends: 492 [2020-11-29 22:59:24,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2020-11-29 22:59:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-11-29 22:59:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2020-11-29 22:59:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-11-29 22:59:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2020-11-29 22:59:24,767 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 485 [2020-11-29 22:59:24,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:59:24,767 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2020-11-29 22:59:24,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 100 states. [2020-11-29 22:59:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2020-11-29 22:59:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-11-29 22:59:24,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:59:24,769 INFO L422 BasicCegarLoop]: trace histogram [98, 97, 97, 97, 97, 1, 1, 1, 1] [2020-11-29 22:59:24,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-11-29 22:59:24,970 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:59:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:59:24,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1485634447, now seen corresponding path program 97 times [2020-11-29 22:59:24,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:59:24,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636668491] [2020-11-29 22:59:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:59:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 23474 backedges. 0 proven. 23474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:30,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636668491] [2020-11-29 22:59:30,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977379846] [2020-11-29 22:59:30,521 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:30,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 99 conjunts are in the unsatisfiable core [2020-11-29 22:59:30,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:59:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 23474 backedges. 0 proven. 23474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:30,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:59:30,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2020-11-29 22:59:30,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373525949] [2020-11-29 22:59:30,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-11-29 22:59:30,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:59:30,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-11-29 22:59:30,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2020-11-29 22:59:30,922 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 101 states. [2020-11-29 22:59:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:59:31,559 INFO L93 Difference]: Finished difference Result 498 states and 498 transitions. [2020-11-29 22:59:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-11-29 22:59:31,559 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 490 [2020-11-29 22:59:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:59:31,561 INFO L225 Difference]: With dead ends: 498 [2020-11-29 22:59:31,561 INFO L226 Difference]: Without dead ends: 497 [2020-11-29 22:59:31,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2020-11-29 22:59:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-11-29 22:59:31,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 496. [2020-11-29 22:59:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-11-29 22:59:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 496 transitions. [2020-11-29 22:59:31,567 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 496 transitions. Word has length 490 [2020-11-29 22:59:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:59:31,567 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 496 transitions. [2020-11-29 22:59:31,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-11-29 22:59:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 496 transitions. [2020-11-29 22:59:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-11-29 22:59:31,570 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:59:31,570 INFO L422 BasicCegarLoop]: trace histogram [99, 98, 98, 98, 98, 1, 1, 1, 1] [2020-11-29 22:59:31,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:31,770 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:59:31,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:59:31,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1619253979, now seen corresponding path program 98 times [2020-11-29 22:59:31,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:59:31,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771620717] [2020-11-29 22:59:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:59:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 23961 backedges. 0 proven. 23961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:37,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771620717] [2020-11-29 22:59:37,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125018343] [2020-11-29 22:59:37,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:37,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:59:37,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:59:37,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 100 conjunts are in the unsatisfiable core [2020-11-29 22:59:37,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:59:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 23961 backedges. 0 proven. 23961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:37,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:59:37,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2020-11-29 22:59:37,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053587018] [2020-11-29 22:59:37,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-11-29 22:59:37,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:59:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-11-29 22:59:37,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2020-11-29 22:59:37,847 INFO L87 Difference]: Start difference. First operand 496 states and 496 transitions. Second operand 102 states. [2020-11-29 22:59:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:59:38,385 INFO L93 Difference]: Finished difference Result 503 states and 503 transitions. [2020-11-29 22:59:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-11-29 22:59:38,385 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 495 [2020-11-29 22:59:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:59:38,386 INFO L225 Difference]: With dead ends: 503 [2020-11-29 22:59:38,387 INFO L226 Difference]: Without dead ends: 502 [2020-11-29 22:59:38,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2020-11-29 22:59:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-11-29 22:59:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 501. [2020-11-29 22:59:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-11-29 22:59:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 501 transitions. [2020-11-29 22:59:38,394 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 501 transitions. Word has length 495 [2020-11-29 22:59:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:59:38,395 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 501 transitions. [2020-11-29 22:59:38,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-11-29 22:59:38,395 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 501 transitions. [2020-11-29 22:59:38,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-11-29 22:59:38,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:59:38,398 INFO L422 BasicCegarLoop]: trace histogram [100, 99, 99, 99, 99, 1, 1, 1, 1] [2020-11-29 22:59:38,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-11-29 22:59:38,625 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:59:38,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:59:38,626 INFO L82 PathProgramCache]: Analyzing trace with hash 323966193, now seen corresponding path program 99 times [2020-11-29 22:59:38,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:59:38,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192658987] [2020-11-29 22:59:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:59:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24453 backedges. 0 proven. 24453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:44,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192658987] [2020-11-29 22:59:44,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185053186] [2020-11-29 22:59:44,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:44,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2020-11-29 22:59:44,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:59:44,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 101 conjunts are in the unsatisfiable core [2020-11-29 22:59:44,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:59:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24453 backedges. 0 proven. 24453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:45,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:59:45,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2020-11-29 22:59:45,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038594914] [2020-11-29 22:59:45,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-11-29 22:59:45,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:59:45,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-11-29 22:59:45,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2020-11-29 22:59:45,079 INFO L87 Difference]: Start difference. First operand 501 states and 501 transitions. Second operand 103 states. [2020-11-29 22:59:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:59:45,892 INFO L93 Difference]: Finished difference Result 508 states and 508 transitions. [2020-11-29 22:59:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-11-29 22:59:45,893 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 500 [2020-11-29 22:59:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:59:45,894 INFO L225 Difference]: With dead ends: 508 [2020-11-29 22:59:45,894 INFO L226 Difference]: Without dead ends: 507 [2020-11-29 22:59:45,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2020-11-29 22:59:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-11-29 22:59:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 506. [2020-11-29 22:59:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-11-29 22:59:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 506 transitions. [2020-11-29 22:59:45,903 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 506 transitions. Word has length 500 [2020-11-29 22:59:45,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:59:45,904 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 506 transitions. [2020-11-29 22:59:45,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-11-29 22:59:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 506 transitions. [2020-11-29 22:59:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-11-29 22:59:45,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:59:45,907 INFO L422 BasicCegarLoop]: trace histogram [101, 100, 100, 100, 100, 1, 1, 1, 1] [2020-11-29 22:59:46,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-11-29 22:59:46,109 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:59:46,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:59:46,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1690426203, now seen corresponding path program 100 times [2020-11-29 22:59:46,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:59:46,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022666270] [2020-11-29 22:59:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:59:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:59:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 24950 backedges. 0 proven. 24950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:52,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022666270] [2020-11-29 22:59:52,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845995181] [2020-11-29 22:59:52,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:59:52,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:59:52,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:59:52,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 102 conjunts are in the unsatisfiable core [2020-11-29 22:59:52,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:59:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 24950 backedges. 0 proven. 24950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:59:52,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:59:52,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2020-11-29 22:59:52,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139768963] [2020-11-29 22:59:52,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-11-29 22:59:52,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:59:52,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-11-29 22:59:52,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2020-11-29 22:59:52,775 INFO L87 Difference]: Start difference. First operand 506 states and 506 transitions. Second operand 104 states. [2020-11-29 22:59:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:59:53,663 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2020-11-29 22:59:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-11-29 22:59:53,664 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 505 [2020-11-29 22:59:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:59:53,665 INFO L225 Difference]: With dead ends: 513 [2020-11-29 22:59:53,665 INFO L226 Difference]: Without dead ends: 512 [2020-11-29 22:59:53,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2020-11-29 22:59:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-11-29 22:59:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 511. [2020-11-29 22:59:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-11-29 22:59:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 511 transitions. [2020-11-29 22:59:53,670 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 511 transitions. Word has length 505 [2020-11-29 22:59:53,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:59:53,670 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 511 transitions. [2020-11-29 22:59:53,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-11-29 22:59:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 511 transitions. [2020-11-29 22:59:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-11-29 22:59:53,672 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:59:53,672 INFO L422 BasicCegarLoop]: trace histogram [102, 101, 101, 101, 101, 1, 1, 1, 1] [2020-11-29 22:59:53,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2020-11-29 22:59:53,873 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:59:53,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:59:53,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1180763505, now seen corresponding path program 101 times [2020-11-29 22:59:53,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:59:53,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702288840] [2020-11-29 22:59:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:59:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:00:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 25452 backedges. 0 proven. 25452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:00:00,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702288840] [2020-11-29 23:00:00,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591991315] [2020-11-29 23:00:00,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:00:01,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2020-11-29 23:00:01,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:00:01,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 202 conjunts are in the unsatisfiable core [2020-11-29 23:00:01,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:00:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 25452 backedges. 25451 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 23:00:34,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:00:34,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [203] imperfect sequences [103] total 305 [2020-11-29 23:00:34,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534573463] [2020-11-29 23:00:34,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 203 states [2020-11-29 23:00:34,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:00:34,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2020-11-29 23:00:34,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15758, Invalid=76962, Unknown=0, NotChecked=0, Total=92720 [2020-11-29 23:00:34,806 INFO L87 Difference]: Start difference. First operand 511 states and 511 transitions. Second operand 203 states. [2020-11-29 23:00:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:00:47,913 INFO L93 Difference]: Finished difference Result 511 states and 511 transitions. [2020-11-29 23:00:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2020-11-29 23:00:47,914 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 510 [2020-11-29 23:00:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:00:47,914 INFO L225 Difference]: With dead ends: 511 [2020-11-29 23:00:47,914 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:00:47,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40002 ImplicationChecksByTransitivity, 50.4s TimeCoverageRelationStatistics Valid=31008, Invalid=132612, Unknown=0, NotChecked=0, Total=163620 [2020-11-29 23:00:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:00:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:00:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:00:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:00:47,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 510 [2020-11-29 23:00:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:00:47,922 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:00:47,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 203 states. [2020-11-29 23:00:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:00:47,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:00:48,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:00:48,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:00:48,355 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 461 [2020-11-29 23:00:52,007 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 461 DAG size of output: 459 [2020-11-29 23:00:52,027 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-29 23:00:52,028 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:00:52,028 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 23:00:52,028 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-29 23:00:52,028 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-29 23:00:52,030 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 26) the Hoare annotation is: (let ((.cse0 (<= 2 ULTIMATE.start_main_~j~0))) (or (and (<= 43 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 86)) (and (<= ULTIMATE.start_main_~j~0 100) .cse0 (<= 50 ULTIMATE.start_main_~i~0)) (and .cse0 (<= 40 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 80)) (and (<= 20 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 40)) (and (<= ULTIMATE.start_main_~j~0 12) .cse0 (<= 6 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 96) (<= 48 ULTIMATE.start_main_~i~0) .cse0) (and (<= 14 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 28) .cse0) (and .cse0 (<= ULTIMATE.start_main_~j~0 160) (<= 80 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 150) (<= 75 ULTIMATE.start_main_~i~0)) (and (<= 57 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 114)) (and (<= 13 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 26) .cse0) (and (<= 81 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 162)) (and (<= ULTIMATE.start_main_~j~0 94) .cse0 (<= 47 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 102) .cse0 (<= 51 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 10) .cse0 (<= 5 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 190) (<= 95 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 110) (<= 55 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 52) (<= 26 ULTIMATE.start_main_~i~0)) (and .cse0 (<= 35 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 70)) (and .cse0 (<= ULTIMATE.start_main_~j~0 122) (<= 61 ULTIMATE.start_main_~i~0)) (and .cse0 (<= 42 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 84)) (and (<= ULTIMATE.start_main_~j~0 148) .cse0 (<= 74 ULTIMATE.start_main_~i~0)) (and (<= 37 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 74) .cse0) (and (<= ULTIMATE.start_main_~j~0 58) (<= 29 ULTIMATE.start_main_~i~0) .cse0) (and (<= ULTIMATE.start_main_~j~0 2) .cse0 (<= 1 ULTIMATE.start_main_~i~0)) (and (<= 79 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 158) .cse0) (and (<= 98 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 196)) (and (<= ULTIMATE.start_main_~j~0 44) .cse0 (<= 22 ULTIMATE.start_main_~i~0)) (and (<= 21 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 42) .cse0) (and .cse0 (<= ULTIMATE.start_main_~j~0 172) (<= 86 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 22) .cse0 (<= 11 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 4) (<= 2 ULTIMATE.start_main_~i~0) .cse0) (and (<= ULTIMATE.start_main_~j~0 174) .cse0 (<= 87 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 130) (<= 65 ULTIMATE.start_main_~i~0) .cse0) (and .cse0 (<= 70 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 140)) (and (<= ULTIMATE.start_main_~j~0 8) .cse0 (<= 4 ULTIMATE.start_main_~i~0)) (and (<= 54 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 108) .cse0) (and (<= 45 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 90) .cse0) (and (<= ULTIMATE.start_main_~j~0 60) (<= 30 ULTIMATE.start_main_~i~0) .cse0) (and (<= ULTIMATE.start_main_~j~0 72) .cse0 (<= 36 ULTIMATE.start_main_~i~0)) (and (<= 18 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 36) .cse0) (and (<= 46 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 92)) (and (<= 49 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 98)) (and .cse0 (<= ULTIMATE.start_main_~j~0 62) (<= 31 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 144) .cse0 (<= 72 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 176) (<= 88 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 76) (<= 38 ULTIMATE.start_main_~i~0)) (and .cse0 (<= 16 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 32)) (and (<= 10 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 20)) (and (<= 23 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 46) .cse0) (and .cse0 (<= ULTIMATE.start_main_~j~0 38) (<= 19 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 188) .cse0 (<= 94 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 166) (<= 83 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 128) .cse0 (<= 64 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 184) (<= 92 ULTIMATE.start_main_~i~0)) (and .cse0 (<= 3 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 6)) (and .cse0 (<= 25 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 50)) (and .cse0 (<= ULTIMATE.start_main_~j~0 116) (<= 58 ULTIMATE.start_main_~i~0)) (and (<= 32 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 64)) (and (<= ULTIMATE.start_main_~j~0 152) .cse0 (<= 76 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 34) .cse0 (<= 17 ULTIMATE.start_main_~i~0)) (and (<= 91 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 182)) (and .cse0 (<= 82 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 164)) (and (<= 99 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 198)) (and .cse0 (<= 89 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 178)) (and (<= 84 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 168)) (and .cse0 (<= ULTIMATE.start_main_~j~0 156) (<= 78 ULTIMATE.start_main_~i~0)) (and (<= 12 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 24)) (and (<= ULTIMATE.start_main_~j~0 54) .cse0 (<= 27 ULTIMATE.start_main_~i~0)) (and (<= 68 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 136)) (and .cse0 (<= 77 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 154)) (and (<= 52 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 104)) (and .cse0 (<= ULTIMATE.start_main_~j~0 134) (<= 67 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 78) .cse0 (<= 39 ULTIMATE.start_main_~i~0)) (and (<= 59 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 118) .cse0) (and .cse0 (<= ULTIMATE.start_main_~j~0 180) (<= 90 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 30) .cse0 (<= 15 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 48) (<= 24 ULTIMATE.start_main_~i~0)) (and .cse0 (<= ULTIMATE.start_main_~j~0 16) (<= 8 ULTIMATE.start_main_~i~0)) (and (<= 63 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 126)) (and (<= 33 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 66)) (and (<= ULTIMATE.start_main_~j~0 194) .cse0 (<= 97 ULTIMATE.start_main_~i~0)) (and .cse0 (<= 85 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 170)) (and (<= 44 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 88)) (and .cse0 (<= 62 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 124)) (and (<= ULTIMATE.start_main_~j~0 68) .cse0 (<= 34 ULTIMATE.start_main_~i~0)) (and (<= 66 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 132)) (and .cse0 (<= 100 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 200)) (and (<= 56 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 112)) (and (<= ULTIMATE.start_main_~j~0 82) .cse0 (<= 41 ULTIMATE.start_main_~i~0)) (and .cse0 (<= 93 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 186)) (and .cse0 (<= ULTIMATE.start_main_~j~0 14) (<= 7 ULTIMATE.start_main_~i~0)) (and (<= 69 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 138) .cse0) (and .cse0 (<= ULTIMATE.start_main_~j~0 146) (<= 73 ULTIMATE.start_main_~i~0)) (and (<= 53 ULTIMATE.start_main_~i~0) .cse0 (<= ULTIMATE.start_main_~j~0 106)) (and (<= ULTIMATE.start_main_~j~0 120) .cse0 (<= 60 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 192) (<= 96 ULTIMATE.start_main_~i~0) .cse0) (and (<= 0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~j~0 0)) (and (<= ULTIMATE.start_main_~j~0 18) .cse0 (<= 9 ULTIMATE.start_main_~i~0)) (and .cse0 (<= 28 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 56)) (and (<= ULTIMATE.start_main_~j~0 142) (<= 71 ULTIMATE.start_main_~i~0) .cse0))) [2020-11-29 23:00:52,030 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2020-11-29 23:00:52,030 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 23:00:52,030 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 23:00:52,030 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:00:52,030 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-29 23:00:52,030 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 23:00:52,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:00:52,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:00:52,031 INFO L277 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2020-11-29 23:00:52,031 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-29 23:00:52,031 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-29 23:00:52,031 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-29 23:00:52,031 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-29 23:00:52,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:00:52 BoogieIcfgContainer [2020-11-29 23:00:52,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:00:52,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:00:52,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:00:52,099 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:00:52,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:55:13" (3/4) ... [2020-11-29 23:00:52,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:00:52,111 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 23:00:52,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:00:52,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:00:52,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:00:52,144 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_40785f4d-6ca8-43de-bd6d-6ed4dd0b7aee/bin/uautomizer/witness.graphml [2020-11-29 23:00:52,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:00:52,145 INFO L168 Benchmark]: Toolchain (without parser) took 339551.39 ms. Allocated memory was 90.2 MB in the beginning and 736.1 MB in the end (delta: 645.9 MB). Free memory was 58.9 MB in the beginning and 333.7 MB in the end (delta: -274.8 MB). Peak memory consumption was 370.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:00:52,146 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 90.2 MB. Free memory was 49.5 MB in the beginning and 49.4 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:00:52,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.89 ms. Allocated memory is still 90.2 MB. Free memory was 58.6 MB in the beginning and 68.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:00:52,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.09 ms. Allocated memory is still 90.2 MB. Free memory was 68.1 MB in the beginning and 66.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:00:52,147 INFO L168 Benchmark]: Boogie Preprocessor took 26.27 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 66.0 MB in the end (delta: 842.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:00:52,147 INFO L168 Benchmark]: RCFGBuilder took 409.37 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 54.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:00:52,147 INFO L168 Benchmark]: TraceAbstraction took 338739.74 ms. Allocated memory was 90.2 MB in the beginning and 736.1 MB in the end (delta: 645.9 MB). Free memory was 53.9 MB in the beginning and 336.8 MB in the end (delta: -282.9 MB). Peak memory consumption was 440.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:00:52,148 INFO L168 Benchmark]: Witness Printer took 45.46 ms. Allocated memory is still 736.1 MB. Free memory was 336.8 MB in the beginning and 333.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:00:52,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 90.2 MB. Free memory was 49.5 MB in the beginning and 49.4 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.89 ms. Allocated memory is still 90.2 MB. Free memory was 58.6 MB in the beginning and 68.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.09 ms. Allocated memory is still 90.2 MB. Free memory was 68.1 MB in the beginning and 66.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.27 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 66.0 MB in the end (delta: 842.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 409.37 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 54.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 338739.74 ms. Allocated memory was 90.2 MB in the beginning and 736.1 MB in the end (delta: 645.9 MB). Free memory was 53.9 MB in the beginning and 336.8 MB in the end (delta: -282.9 MB). Peak memory consumption was 440.1 MB. Max. memory is 16.1 GB. * Witness Printer took 45.46 ms. Allocated memory is still 736.1 MB. Free memory was 336.8 MB in the beginning and 333.7 MB 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((43 <= i && 2 <= j) && j <= 86) || ((j <= 100 && 2 <= j) && 50 <= i)) || ((2 <= j && 40 <= i) && j <= 80)) || ((20 <= i && 2 <= j) && j <= 40)) || ((j <= 12 && 2 <= j) && 6 <= i)) || ((j <= 96 && 48 <= i) && 2 <= j)) || ((14 <= i && j <= 28) && 2 <= j)) || ((2 <= j && j <= 160) && 80 <= i)) || ((2 <= j && j <= 150) && 75 <= i)) || ((57 <= i && 2 <= j) && j <= 114)) || ((13 <= i && j <= 26) && 2 <= j)) || ((81 <= i && 2 <= j) && j <= 162)) || ((j <= 94 && 2 <= j) && 47 <= i)) || ((j <= 102 && 2 <= j) && 51 <= i)) || ((j <= 10 && 2 <= j) && 5 <= i)) || ((2 <= j && j <= 190) && 95 <= i)) || ((2 <= j && j <= 110) && 55 <= i)) || ((2 <= j && j <= 52) && 26 <= i)) || ((2 <= j && 35 <= i) && j <= 70)) || ((2 <= j && j <= 122) && 61 <= i)) || ((2 <= j && 42 <= i) && j <= 84)) || ((j <= 148 && 2 <= j) && 74 <= i)) || ((37 <= i && j <= 74) && 2 <= j)) || ((j <= 58 && 29 <= i) && 2 <= j)) || ((j <= 2 && 2 <= j) && 1 <= i)) || ((79 <= i && j <= 158) && 2 <= j)) || ((98 <= i && 2 <= j) && j <= 196)) || ((j <= 44 && 2 <= j) && 22 <= i)) || ((21 <= i && j <= 42) && 2 <= j)) || ((2 <= j && j <= 172) && 86 <= i)) || ((j <= 22 && 2 <= j) && 11 <= i)) || ((j <= 4 && 2 <= i) && 2 <= j)) || ((j <= 174 && 2 <= j) && 87 <= i)) || ((j <= 130 && 65 <= i) && 2 <= j)) || ((2 <= j && 70 <= i) && j <= 140)) || ((j <= 8 && 2 <= j) && 4 <= i)) || ((54 <= i && j <= 108) && 2 <= j)) || ((45 <= i && j <= 90) && 2 <= j)) || ((j <= 60 && 30 <= i) && 2 <= j)) || ((j <= 72 && 2 <= j) && 36 <= i)) || ((18 <= i && j <= 36) && 2 <= j)) || ((46 <= i && 2 <= j) && j <= 92)) || ((49 <= i && 2 <= j) && j <= 98)) || ((2 <= j && j <= 62) && 31 <= i)) || ((j <= 144 && 2 <= j) && 72 <= i)) || ((2 <= j && j <= 176) && 88 <= i)) || ((2 <= j && j <= 76) && 38 <= i)) || ((2 <= j && 16 <= i) && j <= 32)) || ((10 <= i && 2 <= j) && j <= 20)) || ((23 <= i && j <= 46) && 2 <= j)) || ((2 <= j && j <= 38) && 19 <= i)) || ((j <= 188 && 2 <= j) && 94 <= i)) || ((2 <= j && j <= 166) && 83 <= i)) || ((j <= 128 && 2 <= j) && 64 <= i)) || ((2 <= j && j <= 184) && 92 <= i)) || ((2 <= j && 3 <= i) && j <= 6)) || ((2 <= j && 25 <= i) && j <= 50)) || ((2 <= j && j <= 116) && 58 <= i)) || ((32 <= i && 2 <= j) && j <= 64)) || ((j <= 152 && 2 <= j) && 76 <= i)) || ((j <= 34 && 2 <= j) && 17 <= i)) || ((91 <= i && 2 <= j) && j <= 182)) || ((2 <= j && 82 <= i) && j <= 164)) || ((99 <= i && 2 <= j) && j <= 198)) || ((2 <= j && 89 <= i) && j <= 178)) || ((84 <= i && 2 <= j) && j <= 168)) || ((2 <= j && j <= 156) && 78 <= i)) || ((12 <= i && 2 <= j) && j <= 24)) || ((j <= 54 && 2 <= j) && 27 <= i)) || ((68 <= i && 2 <= j) && j <= 136)) || ((2 <= j && 77 <= i) && j <= 154)) || ((52 <= i && 2 <= j) && j <= 104)) || ((2 <= j && j <= 134) && 67 <= i)) || ((j <= 78 && 2 <= j) && 39 <= i)) || ((59 <= i && j <= 118) && 2 <= j)) || ((2 <= j && j <= 180) && 90 <= i)) || ((j <= 30 && 2 <= j) && 15 <= i)) || ((2 <= j && j <= 48) && 24 <= i)) || ((2 <= j && j <= 16) && 8 <= i)) || ((63 <= i && 2 <= j) && j <= 126)) || ((33 <= i && 2 <= j) && j <= 66)) || ((j <= 194 && 2 <= j) && 97 <= i)) || ((2 <= j && 85 <= i) && j <= 170)) || ((44 <= i && 2 <= j) && j <= 88)) || ((2 <= j && 62 <= i) && j <= 124)) || ((j <= 68 && 2 <= j) && 34 <= i)) || ((66 <= i && 2 <= j) && j <= 132)) || ((2 <= j && 100 <= i) && j <= 200)) || ((56 <= i && 2 <= j) && j <= 112)) || ((j <= 82 && 2 <= j) && 41 <= i)) || ((2 <= j && 93 <= i) && j <= 186)) || ((2 <= j && j <= 14) && 7 <= i)) || ((69 <= i && j <= 138) && 2 <= j)) || ((2 <= j && j <= 146) && 73 <= i)) || ((53 <= i && 2 <= j) && j <= 106)) || ((j <= 120 && 2 <= j) && 60 <= i)) || ((j <= 192 && 96 <= i) && 2 <= j)) || ((0 <= i && i <= 0) && j == 0)) || ((j <= 18 && 2 <= j) && 9 <= i)) || ((2 <= j && 28 <= i) && j <= 56)) || ((j <= 142 && 71 <= i) && 2 <= j) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 334.6s, OverallIterations: 106, TraceHistogramMax: 102, AutomataDifference: 41.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 849 SDtfs, 5379 SDslu, 18731 SDs, 0 SdLazy, 18087 SolverSat, 187 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31639 GetRequests, 25973 SyntacticMatches, 0 SemanticMatches, 5666 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49902 ImplicationChecksByTransitivity, 238.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=511occurred in iteration=105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 106 MinimizatonAttempts, 102 StatesRemovedByMinimization, 101 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 105 NumberOfFragments, 1012 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 2 FomulaSimplificationsInter, 306 FormulaSimplificationTreeSizeReductionInter, 3.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.1s SsaConstructionTime, 13.4s SatisfiabilityAnalysisTime, 245.0s InterpolantComputationTime, 52574 NumberOfCodeBlocks, 52574 NumberOfCodeBlocksAsserted, 2826 NumberOfCheckSat, 52366 ConstructedInterpolants, 0 QuantifiedInterpolants, 53314148 SizeOfPredicates, 101 NumberOfNonLiveVariables, 60651 ConjunctsInSsa, 5455 ConjunctsInUnsatCore, 208 InterpolantComputations, 6 PerfectInterpolantSequences, 25459/1737614 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...