./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 64bit --witnessprinter.graph.data.programhash 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:15:10,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:15:10,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:15:10,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:15:10,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:15:10,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:15:10,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:15:10,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:15:10,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:15:10,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:15:10,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:15:10,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:15:10,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:15:10,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:15:10,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:15:10,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:15:10,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:15:10,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:15:10,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:15:10,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:15:10,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:15:10,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:15:10,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:15:10,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:15:10,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:15:10,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:15:10,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:15:10,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:15:10,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:15:10,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:15:10,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:15:10,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:15:10,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:15:10,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:15:10,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:15:10,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:15:10,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:15:10,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:15:10,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:15:10,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:15:10,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:15:10,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 22:15:10,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:15:10,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:15:10,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:15:10,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:15:10,809 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:15:10,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:15:10,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:15:10,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:15:10,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:15:10,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:15:10,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:15:10,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:15:10,812 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 22:15:10,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:15:10,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:15:10,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:15:10,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:15:10,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:15:10,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:15:10,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:15:10,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:15:10,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:15:10,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:15:10,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:15:10,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:15:10,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:15:10,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:15:10,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:15:10,816 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_97534e5f-0654-4605-ac84-052759ac55b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 [2020-11-29 22:15:11,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:15:11,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:15:11,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:15:11,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:15:11,133 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:15:11,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/Binomial.c [2020-11-29 22:15:11,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/data/9aa1c5ef8/429bc9cba42b4cfcbd410ff1ae9390cf/FLAG21b93afef [2020-11-29 22:15:11,744 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:15:11,744 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/sv-benchmarks/c/termination-numeric/Binomial.c [2020-11-29 22:15:11,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/data/9aa1c5ef8/429bc9cba42b4cfcbd410ff1ae9390cf/FLAG21b93afef [2020-11-29 22:15:12,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/bin/uautomizer/data/9aa1c5ef8/429bc9cba42b4cfcbd410ff1ae9390cf [2020-11-29 22:15:12,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:15:12,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:15:12,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:15:12,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:15:12,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:15:12,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5718bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12, skipping insertion in model container [2020-11-29 22:15:12,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:15:12,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:15:12,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:15:12,452 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:15:12,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:15:12,496 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:15:12,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12 WrapperNode [2020-11-29 22:15:12,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:15:12,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:15:12,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:15:12,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:15:12,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:15:12,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:15:12,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:15:12,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:15:12,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... [2020-11-29 22:15:12,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:15:12,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:15:12,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:15:12,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:15:12,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:12,702 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2020-11-29 22:15:12,703 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2020-11-29 22:15:12,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:15:12,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:15:13,488 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:15:13,489 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 22:15:13,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:15:13 BoogieIcfgContainer [2020-11-29 22:15:13,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:15:13,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:15:13,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:15:13,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:15:13,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:15:12" (1/3) ... [2020-11-29 22:15:13,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b564bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:15:13, skipping insertion in model container [2020-11-29 22:15:13,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:15:12" (2/3) ... [2020-11-29 22:15:13,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b564bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:15:13, skipping insertion in model container [2020-11-29 22:15:13,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:15:13" (3/3) ... [2020-11-29 22:15:13,507 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2020-11-29 22:15:13,526 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:15:13,532 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-11-29 22:15:13,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-11-29 22:15:13,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:15:13,596 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:15:13,597 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:15:13,597 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:15:13,597 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:15:13,598 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:15:13,598 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:15:13,598 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:15:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-11-29 22:15:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:15:13,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:13,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:13,646 INFO L429 AbstractCegarLoop]: === Iteration 1 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:13,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:13,653 INFO L82 PathProgramCache]: Analyzing trace with hash 306418195, now seen corresponding path program 1 times [2020-11-29 22:15:13,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:13,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979392397] [2020-11-29 22:15:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:13,780 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 22:15:13,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979392397] [2020-11-29 22:15:13,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:13,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:15:13,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336733070] [2020-11-29 22:15:13,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:15:13,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:13,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:15:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:15:13,805 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 2 states. [2020-11-29 22:15:13,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:13,847 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2020-11-29 22:15:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:15:13,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 22:15:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:13,859 INFO L225 Difference]: With dead ends: 139 [2020-11-29 22:15:13,859 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 22:15:13,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:15:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 22:15:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-29 22:15:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 22:15:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-11-29 22:15:13,914 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 7 [2020-11-29 22:15:13,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:13,915 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-11-29 22:15:13,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:15:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-11-29 22:15:13,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:15:13,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:13,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:13,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:15:13,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:13,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:13,919 INFO L82 PathProgramCache]: Analyzing trace with hash 306365340, now seen corresponding path program 1 times [2020-11-29 22:15:13,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:13,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336461694] [2020-11-29 22:15:13,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:13,979 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 22:15:13,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336461694] [2020-11-29 22:15:13,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:13,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:15:13,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467645446] [2020-11-29 22:15:13,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:15:13,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:13,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:15:13,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:15:13,982 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 4 states. [2020-11-29 22:15:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:14,078 INFO L93 Difference]: Finished difference Result 134 states and 153 transitions. [2020-11-29 22:15:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:15:14,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 22:15:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:14,080 INFO L225 Difference]: With dead ends: 134 [2020-11-29 22:15:14,080 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 22:15:14,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:15:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 22:15:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-29 22:15:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-29 22:15:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-11-29 22:15:14,094 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 7 [2020-11-29 22:15:14,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:14,094 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-11-29 22:15:14,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:15:14,094 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-11-29 22:15:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:15:14,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:14,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:14,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:15:14,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:14,098 INFO L82 PathProgramCache]: Analyzing trace with hash 154399188, now seen corresponding path program 1 times [2020-11-29 22:15:14,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:14,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415455041] [2020-11-29 22:15:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:14,163 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 22:15:14,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415455041] [2020-11-29 22:15:14,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:14,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:15:14,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264260301] [2020-11-29 22:15:14,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:15:14,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:15:14,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:15:14,166 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 4 states. [2020-11-29 22:15:14,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:14,334 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-11-29 22:15:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:15:14,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 22:15:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:14,338 INFO L225 Difference]: With dead ends: 198 [2020-11-29 22:15:14,338 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 22:15:14,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:15:14,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 22:15:14,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 72. [2020-11-29 22:15:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 22:15:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-11-29 22:15:14,373 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 10 [2020-11-29 22:15:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:14,374 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-11-29 22:15:14,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:15:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-11-29 22:15:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:15:14,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:14,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:14,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:15:14,377 INFO L429 AbstractCegarLoop]: === Iteration 4 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:14,378 INFO L82 PathProgramCache]: Analyzing trace with hash 133902980, now seen corresponding path program 1 times [2020-11-29 22:15:14,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:14,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846945657] [2020-11-29 22:15:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:14,483 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 22:15:14,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846945657] [2020-11-29 22:15:14,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:14,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:15:14,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309726736] [2020-11-29 22:15:14,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:15:14,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:14,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:15:14,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:15:14,486 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 6 states. [2020-11-29 22:15:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:14,932 INFO L93 Difference]: Finished difference Result 209 states and 250 transitions. [2020-11-29 22:15:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:15:14,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 22:15:14,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:14,937 INFO L225 Difference]: With dead ends: 209 [2020-11-29 22:15:14,937 INFO L226 Difference]: Without dead ends: 143 [2020-11-29 22:15:14,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-29 22:15:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-11-29 22:15:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-29 22:15:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2020-11-29 22:15:14,967 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 10 [2020-11-29 22:15:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:14,968 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2020-11-29 22:15:14,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:15:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2020-11-29 22:15:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 22:15:14,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:14,969 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:14,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:15:14,970 INFO L429 AbstractCegarLoop]: === Iteration 5 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:14,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:14,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2023579039, now seen corresponding path program 1 times [2020-11-29 22:15:14,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:14,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749278401] [2020-11-29 22:15:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 22:15:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:15:15,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749278401] [2020-11-29 22:15:15,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:15,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:15:15,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797445265] [2020-11-29 22:15:15,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:15:15,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:15,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:15:15,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:15:15,038 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 6 states. [2020-11-29 22:15:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:15,427 INFO L93 Difference]: Finished difference Result 286 states and 388 transitions. [2020-11-29 22:15:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:15:15,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 22:15:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:15,433 INFO L225 Difference]: With dead ends: 286 [2020-11-29 22:15:15,433 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 22:15:15,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 22:15:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 121. [2020-11-29 22:15:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-29 22:15:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2020-11-29 22:15:15,469 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 16 [2020-11-29 22:15:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:15,470 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2020-11-29 22:15:15,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:15:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2020-11-29 22:15:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:15:15,471 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:15,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:15,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:15:15,472 INFO L429 AbstractCegarLoop]: === Iteration 6 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:15,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:15,476 INFO L82 PathProgramCache]: Analyzing trace with hash -282699610, now seen corresponding path program 1 times [2020-11-29 22:15:15,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:15,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768332266] [2020-11-29 22:15:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 22:15:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 22:15:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 22:15:15,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768332266] [2020-11-29 22:15:15,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:15,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:15:15,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187625493] [2020-11-29 22:15:15,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:15:15,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:15,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:15:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:15:15,572 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand 5 states. [2020-11-29 22:15:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:15,776 INFO L93 Difference]: Finished difference Result 181 states and 207 transitions. [2020-11-29 22:15:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:15:15,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-29 22:15:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:15,782 INFO L225 Difference]: With dead ends: 181 [2020-11-29 22:15:15,782 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 22:15:15,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:15:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 22:15:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 123. [2020-11-29 22:15:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-29 22:15:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 159 transitions. [2020-11-29 22:15:15,818 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 159 transitions. Word has length 19 [2020-11-29 22:15:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:15,819 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 159 transitions. [2020-11-29 22:15:15,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:15:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 159 transitions. [2020-11-29 22:15:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:15:15,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:15,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:15,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:15:15,829 INFO L429 AbstractCegarLoop]: === Iteration 7 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:15,830 INFO L82 PathProgramCache]: Analyzing trace with hash -173753234, now seen corresponding path program 1 times [2020-11-29 22:15:15,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:15,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652917346] [2020-11-29 22:15:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 22:15:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 22:15:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 22:15:15,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652917346] [2020-11-29 22:15:15,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:15,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:15:15,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623370770] [2020-11-29 22:15:15,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:15:15,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:15,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:15:15,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:15:15,916 INFO L87 Difference]: Start difference. First operand 123 states and 159 transitions. Second operand 5 states. [2020-11-29 22:15:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:16,173 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2020-11-29 22:15:16,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:15:16,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 22:15:16,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:16,179 INFO L225 Difference]: With dead ends: 150 [2020-11-29 22:15:16,179 INFO L226 Difference]: Without dead ends: 148 [2020-11-29 22:15:16,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:15:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-29 22:15:16,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-11-29 22:15:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-29 22:15:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2020-11-29 22:15:16,196 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 20 [2020-11-29 22:15:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:16,197 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2020-11-29 22:15:16,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:15:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2020-11-29 22:15:16,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:15:16,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:16,207 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:16,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:15:16,208 INFO L429 AbstractCegarLoop]: === Iteration 8 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:16,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash -482951234, now seen corresponding path program 1 times [2020-11-29 22:15:16,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:16,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773138900] [2020-11-29 22:15:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:16,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 22:15:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 22:15:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 22:15:16,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773138900] [2020-11-29 22:15:16,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:16,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:15:16,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638620982] [2020-11-29 22:15:16,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:15:16,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:16,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:15:16,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:15:16,300 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand 7 states. [2020-11-29 22:15:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:18,679 INFO L93 Difference]: Finished difference Result 291 states and 363 transitions. [2020-11-29 22:15:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:15:18,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-29 22:15:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:18,683 INFO L225 Difference]: With dead ends: 291 [2020-11-29 22:15:18,683 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 22:15:18,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:15:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 22:15:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 127. [2020-11-29 22:15:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-29 22:15:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 161 transitions. [2020-11-29 22:15:18,722 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 161 transitions. Word has length 24 [2020-11-29 22:15:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:18,723 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 161 transitions. [2020-11-29 22:15:18,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:15:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 161 transitions. [2020-11-29 22:15:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 22:15:18,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:18,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:18,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 22:15:18,725 INFO L429 AbstractCegarLoop]: === Iteration 9 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:18,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:18,727 INFO L82 PathProgramCache]: Analyzing trace with hash 539716203, now seen corresponding path program 1 times [2020-11-29 22:15:18,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:18,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835802952] [2020-11-29 22:15:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:18,752 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:18,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574996671] [2020-11-29 22:15:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:18,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:15:18,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 22:15:18,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835802952] [2020-11-29 22:15:18,873 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:18,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574996671] [2020-11-29 22:15:18,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:18,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:15:18,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451403409] [2020-11-29 22:15:18,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:15:18,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:18,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:15:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:15:18,875 INFO L87 Difference]: Start difference. First operand 127 states and 161 transitions. Second operand 5 states. [2020-11-29 22:15:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:21,391 INFO L93 Difference]: Finished difference Result 203 states and 276 transitions. [2020-11-29 22:15:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:15:21,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-11-29 22:15:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:21,440 INFO L225 Difference]: With dead ends: 203 [2020-11-29 22:15:21,440 INFO L226 Difference]: Without dead ends: 199 [2020-11-29 22:15:21,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:15:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-11-29 22:15:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 157. [2020-11-29 22:15:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-29 22:15:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 216 transitions. [2020-11-29 22:15:21,459 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 216 transitions. Word has length 27 [2020-11-29 22:15:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:21,460 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 216 transitions. [2020-11-29 22:15:21,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:15:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 216 transitions. [2020-11-29 22:15:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:15:21,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:21,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:21,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 22:15:21,677 INFO L429 AbstractCegarLoop]: === Iteration 10 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:21,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:21,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1023768851, now seen corresponding path program 1 times [2020-11-29 22:15:21,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:21,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10554266] [2020-11-29 22:15:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:21,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:21,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811037196] [2020-11-29 22:15:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:21,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:15:21,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 22:15:21,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10554266] [2020-11-29 22:15:21,831 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:21,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811037196] [2020-11-29 22:15:21,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:21,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 22:15:21,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452139229] [2020-11-29 22:15:21,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:15:21,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:21,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:15:21,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:15:21,833 INFO L87 Difference]: Start difference. First operand 157 states and 216 transitions. Second operand 7 states. [2020-11-29 22:15:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:26,723 INFO L93 Difference]: Finished difference Result 267 states and 364 transitions. [2020-11-29 22:15:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:15:26,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-11-29 22:15:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:26,729 INFO L225 Difference]: With dead ends: 267 [2020-11-29 22:15:26,729 INFO L226 Difference]: Without dead ends: 263 [2020-11-29 22:15:26,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:15:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-29 22:15:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 196. [2020-11-29 22:15:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-11-29 22:15:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 272 transitions. [2020-11-29 22:15:26,764 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 272 transitions. Word has length 29 [2020-11-29 22:15:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:26,765 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 272 transitions. [2020-11-29 22:15:26,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:15:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 272 transitions. [2020-11-29 22:15:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:15:26,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:26,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:26,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 22:15:26,983 INFO L429 AbstractCegarLoop]: === Iteration 11 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:26,983 INFO L82 PathProgramCache]: Analyzing trace with hash 595557041, now seen corresponding path program 1 times [2020-11-29 22:15:26,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:26,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014590814] [2020-11-29 22:15:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:26,992 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:26,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427140824] [2020-11-29 22:15:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:27,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:15:27,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 22:15:27,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014590814] [2020-11-29 22:15:27,074 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:27,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427140824] [2020-11-29 22:15:27,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:27,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:15:27,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804197404] [2020-11-29 22:15:27,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:15:27,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:27,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:15:27,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:15:27,077 INFO L87 Difference]: Start difference. First operand 196 states and 272 transitions. Second operand 4 states. [2020-11-29 22:15:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:27,199 INFO L93 Difference]: Finished difference Result 264 states and 352 transitions. [2020-11-29 22:15:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:15:27,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-29 22:15:27,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:27,203 INFO L225 Difference]: With dead ends: 264 [2020-11-29 22:15:27,203 INFO L226 Difference]: Without dead ends: 263 [2020-11-29 22:15:27,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 22:15:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-29 22:15:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 250. [2020-11-29 22:15:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 22:15:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 346 transitions. [2020-11-29 22:15:27,227 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 346 transitions. Word has length 33 [2020-11-29 22:15:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:27,228 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 346 transitions. [2020-11-29 22:15:27,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:15:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 346 transitions. [2020-11-29 22:15:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:15:27,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:27,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:27,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-29 22:15:27,445 INFO L429 AbstractCegarLoop]: === Iteration 12 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:27,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:27,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1282399211, now seen corresponding path program 1 times [2020-11-29 22:15:27,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:27,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014261806] [2020-11-29 22:15:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:27,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:27,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952302920] [2020-11-29 22:15:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:27,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:15:27,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 22:15:27,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014261806] [2020-11-29 22:15:27,527 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:27,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952302920] [2020-11-29 22:15:27,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:27,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:15:27,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597358310] [2020-11-29 22:15:27,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:15:27,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:27,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:15:27,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:15:27,529 INFO L87 Difference]: Start difference. First operand 250 states and 346 transitions. Second operand 4 states. [2020-11-29 22:15:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:27,582 INFO L93 Difference]: Finished difference Result 250 states and 346 transitions. [2020-11-29 22:15:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:15:27,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-11-29 22:15:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:27,587 INFO L225 Difference]: With dead ends: 250 [2020-11-29 22:15:27,587 INFO L226 Difference]: Without dead ends: 249 [2020-11-29 22:15:27,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 22:15:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-11-29 22:15:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-11-29 22:15:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-11-29 22:15:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 344 transitions. [2020-11-29 22:15:27,624 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 344 transitions. Word has length 34 [2020-11-29 22:15:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:27,627 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 344 transitions. [2020-11-29 22:15:27,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:15:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 344 transitions. [2020-11-29 22:15:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 22:15:27,629 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:27,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:27,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:15:27,845 INFO L429 AbstractCegarLoop]: === Iteration 13 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:27,845 INFO L82 PathProgramCache]: Analyzing trace with hash 220869310, now seen corresponding path program 1 times [2020-11-29 22:15:27,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:27,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382460717] [2020-11-29 22:15:27,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:27,852 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:27,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898159990] [2020-11-29 22:15:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:27,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:15:27,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-29 22:15:27,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382460717] [2020-11-29 22:15:27,931 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:27,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898159990] [2020-11-29 22:15:27,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:27,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:15:27,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252345837] [2020-11-29 22:15:27,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:15:27,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:15:27,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:15:27,933 INFO L87 Difference]: Start difference. First operand 249 states and 344 transitions. Second operand 4 states. [2020-11-29 22:15:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:27,978 INFO L93 Difference]: Finished difference Result 265 states and 349 transitions. [2020-11-29 22:15:27,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:15:27,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-11-29 22:15:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:27,981 INFO L225 Difference]: With dead ends: 265 [2020-11-29 22:15:27,981 INFO L226 Difference]: Without dead ends: 264 [2020-11-29 22:15:27,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 22:15:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-11-29 22:15:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 251. [2020-11-29 22:15:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-11-29 22:15:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 346 transitions. [2020-11-29 22:15:28,002 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 346 transitions. Word has length 37 [2020-11-29 22:15:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:28,003 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 346 transitions. [2020-11-29 22:15:28,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:15:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 346 transitions. [2020-11-29 22:15:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 22:15:28,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:28,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:28,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 22:15:28,213 INFO L429 AbstractCegarLoop]: === Iteration 14 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:28,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1742985850, now seen corresponding path program 1 times [2020-11-29 22:15:28,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:28,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520950810] [2020-11-29 22:15:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:28,222 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:28,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052764908] [2020-11-29 22:15:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:28,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:15:28,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-29 22:15:28,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520950810] [2020-11-29 22:15:28,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:28,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052764908] [2020-11-29 22:15:28,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:28,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:15:28,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047138875] [2020-11-29 22:15:28,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:15:28,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:28,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:15:28,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:15:28,332 INFO L87 Difference]: Start difference. First operand 251 states and 346 transitions. Second operand 4 states. [2020-11-29 22:15:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:28,392 INFO L93 Difference]: Finished difference Result 251 states and 346 transitions. [2020-11-29 22:15:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:15:28,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-11-29 22:15:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:28,396 INFO L225 Difference]: With dead ends: 251 [2020-11-29 22:15:28,396 INFO L226 Difference]: Without dead ends: 250 [2020-11-29 22:15:28,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 22:15:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-29 22:15:28,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-11-29 22:15:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 22:15:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 345 transitions. [2020-11-29 22:15:28,423 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 345 transitions. Word has length 38 [2020-11-29 22:15:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:28,423 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 345 transitions. [2020-11-29 22:15:28,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:15:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 345 transitions. [2020-11-29 22:15:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 22:15:28,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:28,430 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:28,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:15:28,653 INFO L429 AbstractCegarLoop]: === Iteration 15 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:28,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:28,653 INFO L82 PathProgramCache]: Analyzing trace with hash 57775986, now seen corresponding path program 1 times [2020-11-29 22:15:28,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:28,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162140329] [2020-11-29 22:15:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:28,662 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:28,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129712] [2020-11-29 22:15:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:28,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:15:28,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 22:15:28,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162140329] [2020-11-29 22:15:28,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:28,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129712] [2020-11-29 22:15:28,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:28,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 22:15:28,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253426606] [2020-11-29 22:15:28,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:15:28,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:28,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:15:28,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:28,863 INFO L87 Difference]: Start difference. First operand 250 states and 345 transitions. Second operand 8 states. [2020-11-29 22:15:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:31,424 INFO L93 Difference]: Finished difference Result 450 states and 610 transitions. [2020-11-29 22:15:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:15:31,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-11-29 22:15:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:31,431 INFO L225 Difference]: With dead ends: 450 [2020-11-29 22:15:31,431 INFO L226 Difference]: Without dead ends: 449 [2020-11-29 22:15:31,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:15:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-11-29 22:15:31,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 270. [2020-11-29 22:15:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-11-29 22:15:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 377 transitions. [2020-11-29 22:15:31,486 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 377 transitions. Word has length 40 [2020-11-29 22:15:31,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:31,488 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 377 transitions. [2020-11-29 22:15:31,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:15:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 377 transitions. [2020-11-29 22:15:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 22:15:31,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:31,490 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:31,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 22:15:31,708 INFO L429 AbstractCegarLoop]: === Iteration 16 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:31,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1791055604, now seen corresponding path program 1 times [2020-11-29 22:15:31,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:31,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161591420] [2020-11-29 22:15:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:31,715 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:31,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092751090] [2020-11-29 22:15:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:31,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:15:31,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-29 22:15:31,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161591420] [2020-11-29 22:15:31,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:31,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092751090] [2020-11-29 22:15:31,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:31,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:15:31,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104166054] [2020-11-29 22:15:31,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:15:31,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:31,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:15:31,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:15:31,772 INFO L87 Difference]: Start difference. First operand 270 states and 377 transitions. Second operand 3 states. [2020-11-29 22:15:31,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:31,882 INFO L93 Difference]: Finished difference Result 270 states and 377 transitions. [2020-11-29 22:15:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:15:31,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-11-29 22:15:31,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:31,885 INFO L225 Difference]: With dead ends: 270 [2020-11-29 22:15:31,886 INFO L226 Difference]: Without dead ends: 269 [2020-11-29 22:15:31,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 22:15:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-11-29 22:15:31,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2020-11-29 22:15:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-11-29 22:15:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 375 transitions. [2020-11-29 22:15:31,907 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 375 transitions. Word has length 41 [2020-11-29 22:15:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:31,907 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 375 transitions. [2020-11-29 22:15:31,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:15:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 375 transitions. [2020-11-29 22:15:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 22:15:31,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:31,909 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:32,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 22:15:32,129 INFO L429 AbstractCegarLoop]: === Iteration 17 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash 724802482, now seen corresponding path program 1 times [2020-11-29 22:15:32,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:32,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643245169] [2020-11-29 22:15:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:32,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:32,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594966498] [2020-11-29 22:15:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:32,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:15:32,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 22:15:32,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643245169] [2020-11-29 22:15:32,371 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:32,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594966498] [2020-11-29 22:15:32,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:32,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 22:15:32,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457419859] [2020-11-29 22:15:32,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:15:32,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:32,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:15:32,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:15:32,375 INFO L87 Difference]: Start difference. First operand 269 states and 375 transitions. Second operand 9 states. [2020-11-29 22:15:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:32,756 INFO L93 Difference]: Finished difference Result 527 states and 708 transitions. [2020-11-29 22:15:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:15:32,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-11-29 22:15:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:32,761 INFO L225 Difference]: With dead ends: 527 [2020-11-29 22:15:32,761 INFO L226 Difference]: Without dead ends: 347 [2020-11-29 22:15:32,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:15:32,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-11-29 22:15:32,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 269. [2020-11-29 22:15:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-11-29 22:15:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 374 transitions. [2020-11-29 22:15:32,787 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 374 transitions. Word has length 45 [2020-11-29 22:15:32,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:32,788 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 374 transitions. [2020-11-29 22:15:32,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:15:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 374 transitions. [2020-11-29 22:15:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 22:15:32,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:32,791 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:33,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 22:15:33,005 INFO L429 AbstractCegarLoop]: === Iteration 18 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:33,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1157697575, now seen corresponding path program 1 times [2020-11-29 22:15:33,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:33,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034247409] [2020-11-29 22:15:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:33,012 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:33,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571865692] [2020-11-29 22:15:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:33,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:15:33,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-29 22:15:33,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034247409] [2020-11-29 22:15:33,164 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:33,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571865692] [2020-11-29 22:15:33,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:33,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 22:15:33,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834449615] [2020-11-29 22:15:33,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:15:33,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:33,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:15:33,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:33,166 INFO L87 Difference]: Start difference. First operand 269 states and 374 transitions. Second operand 8 states. [2020-11-29 22:15:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:33,741 INFO L93 Difference]: Finished difference Result 472 states and 641 transitions. [2020-11-29 22:15:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:15:33,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-11-29 22:15:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:33,744 INFO L225 Difference]: With dead ends: 472 [2020-11-29 22:15:33,744 INFO L226 Difference]: Without dead ends: 231 [2020-11-29 22:15:33,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:15:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-11-29 22:15:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 214. [2020-11-29 22:15:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-11-29 22:15:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 284 transitions. [2020-11-29 22:15:33,763 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 284 transitions. Word has length 46 [2020-11-29 22:15:33,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:33,763 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 284 transitions. [2020-11-29 22:15:33,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:15:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 284 transitions. [2020-11-29 22:15:33,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 22:15:33,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:33,765 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:33,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 22:15:33,979 INFO L429 AbstractCegarLoop]: === Iteration 19 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:33,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1962570407, now seen corresponding path program 1 times [2020-11-29 22:15:33,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:33,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637517272] [2020-11-29 22:15:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:33,986 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:33,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415706778] [2020-11-29 22:15:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:34,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:15:34,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 22:15:34,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637517272] [2020-11-29 22:15:34,201 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:34,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415706778] [2020-11-29 22:15:34,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:34,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 22:15:34,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950229102] [2020-11-29 22:15:34,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:15:34,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:34,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:15:34,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:15:34,203 INFO L87 Difference]: Start difference. First operand 214 states and 284 transitions. Second operand 11 states. [2020-11-29 22:15:35,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:35,209 INFO L93 Difference]: Finished difference Result 333 states and 425 transitions. [2020-11-29 22:15:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 22:15:35,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-11-29 22:15:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:35,216 INFO L225 Difference]: With dead ends: 333 [2020-11-29 22:15:35,217 INFO L226 Difference]: Without dead ends: 331 [2020-11-29 22:15:35,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2020-11-29 22:15:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-11-29 22:15:35,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 214. [2020-11-29 22:15:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-11-29 22:15:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 282 transitions. [2020-11-29 22:15:35,247 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 282 transitions. Word has length 48 [2020-11-29 22:15:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:35,247 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 282 transitions. [2020-11-29 22:15:35,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:15:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 282 transitions. [2020-11-29 22:15:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-29 22:15:35,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:35,249 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:35,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:15:35,476 INFO L429 AbstractCegarLoop]: === Iteration 20 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:35,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:35,477 INFO L82 PathProgramCache]: Analyzing trace with hash 448565911, now seen corresponding path program 1 times [2020-11-29 22:15:35,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:35,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564211740] [2020-11-29 22:15:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:35,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:35,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110920754] [2020-11-29 22:15:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:35,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:15:35,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-29 22:15:35,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564211740] [2020-11-29 22:15:35,583 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:35,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110920754] [2020-11-29 22:15:35,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:35,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:15:35,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774475785] [2020-11-29 22:15:35,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:15:35,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:35,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:15:35,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:15:35,585 INFO L87 Difference]: Start difference. First operand 214 states and 282 transitions. Second operand 6 states. [2020-11-29 22:15:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:36,015 INFO L93 Difference]: Finished difference Result 409 states and 534 transitions. [2020-11-29 22:15:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:15:36,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-11-29 22:15:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:36,019 INFO L225 Difference]: With dead ends: 409 [2020-11-29 22:15:36,019 INFO L226 Difference]: Without dead ends: 228 [2020-11-29 22:15:36,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:36,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-29 22:15:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 218. [2020-11-29 22:15:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-29 22:15:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 280 transitions. [2020-11-29 22:15:36,038 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 280 transitions. Word has length 56 [2020-11-29 22:15:36,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:36,039 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 280 transitions. [2020-11-29 22:15:36,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:15:36,039 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 280 transitions. [2020-11-29 22:15:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 22:15:36,040 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:36,040 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:36,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:15:36,268 INFO L429 AbstractCegarLoop]: === Iteration 21 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1583287798, now seen corresponding path program 1 times [2020-11-29 22:15:36,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:36,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564116432] [2020-11-29 22:15:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:36,281 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:36,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886385215] [2020-11-29 22:15:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:36,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:15:36,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-11-29 22:15:36,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564116432] [2020-11-29 22:15:36,432 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:36,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886385215] [2020-11-29 22:15:36,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:36,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 22:15:36,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742788552] [2020-11-29 22:15:36,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:15:36,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:36,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:15:36,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:15:36,436 INFO L87 Difference]: Start difference. First operand 218 states and 280 transitions. Second operand 7 states. [2020-11-29 22:15:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:36,646 INFO L93 Difference]: Finished difference Result 257 states and 318 transitions. [2020-11-29 22:15:36,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:15:36,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-11-29 22:15:36,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:36,649 INFO L225 Difference]: With dead ends: 257 [2020-11-29 22:15:36,649 INFO L226 Difference]: Without dead ends: 256 [2020-11-29 22:15:36,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:15:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-11-29 22:15:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 222. [2020-11-29 22:15:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-11-29 22:15:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 285 transitions. [2020-11-29 22:15:36,665 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 285 transitions. Word has length 59 [2020-11-29 22:15:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:36,666 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 285 transitions. [2020-11-29 22:15:36,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:15:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 285 transitions. [2020-11-29 22:15:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 22:15:36,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:36,667 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:36,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 22:15:36,880 INFO L429 AbstractCegarLoop]: === Iteration 22 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:36,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:36,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1646027842, now seen corresponding path program 1 times [2020-11-29 22:15:36,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:36,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121210439] [2020-11-29 22:15:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:36,887 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:36,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527924022] [2020-11-29 22:15:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:36,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:15:36,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-11-29 22:15:37,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121210439] [2020-11-29 22:15:37,057 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:37,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527924022] [2020-11-29 22:15:37,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:37,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 22:15:37,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057036887] [2020-11-29 22:15:37,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:15:37,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:15:37,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:15:37,058 INFO L87 Difference]: Start difference. First operand 222 states and 285 transitions. Second operand 9 states. [2020-11-29 22:15:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:37,483 INFO L93 Difference]: Finished difference Result 283 states and 346 transitions. [2020-11-29 22:15:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:15:37,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-11-29 22:15:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:37,490 INFO L225 Difference]: With dead ends: 283 [2020-11-29 22:15:37,492 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 22:15:37,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:15:37,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 22:15:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 248. [2020-11-29 22:15:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-29 22:15:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 317 transitions. [2020-11-29 22:15:37,538 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 317 transitions. Word has length 64 [2020-11-29 22:15:37,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:37,538 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 317 transitions. [2020-11-29 22:15:37,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:15:37,538 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 317 transitions. [2020-11-29 22:15:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-29 22:15:37,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:37,546 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:37,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:15:37,772 INFO L429 AbstractCegarLoop]: === Iteration 23 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1045826931, now seen corresponding path program 1 times [2020-11-29 22:15:37,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:37,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890303416] [2020-11-29 22:15:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:37,779 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:37,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709435620] [2020-11-29 22:15:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:37,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:15:37,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-11-29 22:15:37,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890303416] [2020-11-29 22:15:37,972 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:37,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709435620] [2020-11-29 22:15:37,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:37,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 22:15:37,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21136899] [2020-11-29 22:15:37,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:15:37,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:37,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:15:37,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:15:37,975 INFO L87 Difference]: Start difference. First operand 248 states and 317 transitions. Second operand 9 states. [2020-11-29 22:15:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:38,467 INFO L93 Difference]: Finished difference Result 436 states and 561 transitions. [2020-11-29 22:15:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:15:38,469 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-11-29 22:15:38,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:38,472 INFO L225 Difference]: With dead ends: 436 [2020-11-29 22:15:38,473 INFO L226 Difference]: Without dead ends: 255 [2020-11-29 22:15:38,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:15:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-29 22:15:38,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2020-11-29 22:15:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-11-29 22:15:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 312 transitions. [2020-11-29 22:15:38,492 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 312 transitions. Word has length 69 [2020-11-29 22:15:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:38,492 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 312 transitions. [2020-11-29 22:15:38,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:15:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 312 transitions. [2020-11-29 22:15:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-29 22:15:38,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:38,494 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:38,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 22:15:38,716 INFO L429 AbstractCegarLoop]: === Iteration 24 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:38,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:38,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1450932827, now seen corresponding path program 1 times [2020-11-29 22:15:38,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:38,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042167507] [2020-11-29 22:15:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:38,731 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:38,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055438397] [2020-11-29 22:15:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:38,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:15:38,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-11-29 22:15:39,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042167507] [2020-11-29 22:15:39,003 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:39,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055438397] [2020-11-29 22:15:39,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:39,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 22:15:39,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114237546] [2020-11-29 22:15:39,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:15:39,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:39,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:15:39,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:15:39,005 INFO L87 Difference]: Start difference. First operand 245 states and 312 transitions. Second operand 12 states. [2020-11-29 22:15:41,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:41,781 INFO L93 Difference]: Finished difference Result 276 states and 337 transitions. [2020-11-29 22:15:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 22:15:41,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-11-29 22:15:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:41,784 INFO L225 Difference]: With dead ends: 276 [2020-11-29 22:15:41,784 INFO L226 Difference]: Without dead ends: 274 [2020-11-29 22:15:41,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-11-29 22:15:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-11-29 22:15:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 245. [2020-11-29 22:15:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-11-29 22:15:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 310 transitions. [2020-11-29 22:15:41,805 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 310 transitions. Word has length 72 [2020-11-29 22:15:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:41,806 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 310 transitions. [2020-11-29 22:15:41,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:15:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 310 transitions. [2020-11-29 22:15:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-29 22:15:41,807 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:41,807 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:42,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:15:42,032 INFO L429 AbstractCegarLoop]: === Iteration 25 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:42,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1181156173, now seen corresponding path program 1 times [2020-11-29 22:15:42,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:42,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222436451] [2020-11-29 22:15:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:42,039 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:42,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238547009] [2020-11-29 22:15:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:42,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:15:42,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-29 22:15:42,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222436451] [2020-11-29 22:15:42,134 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:42,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238547009] [2020-11-29 22:15:42,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:42,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 22:15:42,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580619226] [2020-11-29 22:15:42,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:15:42,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:42,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:15:42,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:15:42,136 INFO L87 Difference]: Start difference. First operand 245 states and 310 transitions. Second operand 5 states. [2020-11-29 22:15:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:44,574 INFO L93 Difference]: Finished difference Result 265 states and 328 transitions. [2020-11-29 22:15:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:15:44,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-11-29 22:15:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:44,580 INFO L225 Difference]: With dead ends: 265 [2020-11-29 22:15:44,580 INFO L226 Difference]: Without dead ends: 263 [2020-11-29 22:15:44,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:15:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-29 22:15:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 249. [2020-11-29 22:15:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-11-29 22:15:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 311 transitions. [2020-11-29 22:15:44,599 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 311 transitions. Word has length 77 [2020-11-29 22:15:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:44,599 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 311 transitions. [2020-11-29 22:15:44,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:15:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 311 transitions. [2020-11-29 22:15:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-29 22:15:44,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:44,601 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:44,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-29 22:15:44,816 INFO L429 AbstractCegarLoop]: === Iteration 26 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2038864413, now seen corresponding path program 1 times [2020-11-29 22:15:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:44,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044544359] [2020-11-29 22:15:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:44,822 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:44,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678999314] [2020-11-29 22:15:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:44,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:15:44,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-11-29 22:15:44,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044544359] [2020-11-29 22:15:44,973 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:44,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678999314] [2020-11-29 22:15:44,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:44,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:15:44,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153967453] [2020-11-29 22:15:44,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:15:44,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:44,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:15:44,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:15:44,975 INFO L87 Difference]: Start difference. First operand 249 states and 311 transitions. Second operand 7 states. [2020-11-29 22:15:45,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:45,571 INFO L93 Difference]: Finished difference Result 249 states and 311 transitions. [2020-11-29 22:15:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:15:45,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-11-29 22:15:45,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:45,574 INFO L225 Difference]: With dead ends: 249 [2020-11-29 22:15:45,574 INFO L226 Difference]: Without dead ends: 246 [2020-11-29 22:15:45,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-11-29 22:15:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 234. [2020-11-29 22:15:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 22:15:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 293 transitions. [2020-11-29 22:15:45,589 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 293 transitions. Word has length 78 [2020-11-29 22:15:45,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:45,590 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 293 transitions. [2020-11-29 22:15:45,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:15:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 293 transitions. [2020-11-29 22:15:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-29 22:15:45,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:45,591 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:45,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-29 22:15:45,801 INFO L429 AbstractCegarLoop]: === Iteration 27 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:45,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:45,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1219712523, now seen corresponding path program 2 times [2020-11-29 22:15:45,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:45,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598048636] [2020-11-29 22:15:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:45,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:45,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227894819] [2020-11-29 22:15:45,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:45,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:15:45,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:15:45,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-29 22:15:45,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 38 proven. 30 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-29 22:15:46,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598048636] [2020-11-29 22:15:46,422 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:46,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227894819] [2020-11-29 22:15:46,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:46,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-11-29 22:15:46,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047208542] [2020-11-29 22:15:46,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 22:15:46,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:46,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 22:15:46,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:15:46,424 INFO L87 Difference]: Start difference. First operand 234 states and 293 transitions. Second operand 18 states. [2020-11-29 22:15:47,931 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2020-11-29 22:15:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:48,999 INFO L93 Difference]: Finished difference Result 293 states and 372 transitions. [2020-11-29 22:15:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 22:15:48,999 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-11-29 22:15:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:49,001 INFO L225 Difference]: With dead ends: 293 [2020-11-29 22:15:49,002 INFO L226 Difference]: Without dead ends: 291 [2020-11-29 22:15:49,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-11-29 22:15:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-11-29 22:15:49,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 250. [2020-11-29 22:15:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 22:15:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 312 transitions. [2020-11-29 22:15:49,024 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 312 transitions. Word has length 79 [2020-11-29 22:15:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:49,024 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 312 transitions. [2020-11-29 22:15:49,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 22:15:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 312 transitions. [2020-11-29 22:15:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 22:15:49,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:49,026 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:49,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-29 22:15:49,252 INFO L429 AbstractCegarLoop]: === Iteration 28 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:49,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1231403597, now seen corresponding path program 3 times [2020-11-29 22:15:49,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:49,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598398346] [2020-11-29 22:15:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:49,260 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:49,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261715091] [2020-11-29 22:15:49,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:49,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 22:15:49,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:15:49,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:15:49,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 111 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-11-29 22:15:49,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598398346] [2020-11-29 22:15:49,433 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:49,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261715091] [2020-11-29 22:15:49,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:49,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 22:15:49,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948294838] [2020-11-29 22:15:49,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:15:49,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:15:49,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:15:49,436 INFO L87 Difference]: Start difference. First operand 250 states and 312 transitions. Second operand 9 states. [2020-11-29 22:15:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:50,208 INFO L93 Difference]: Finished difference Result 536 states and 694 transitions. [2020-11-29 22:15:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:15:50,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-11-29 22:15:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:50,211 INFO L225 Difference]: With dead ends: 536 [2020-11-29 22:15:50,211 INFO L226 Difference]: Without dead ends: 341 [2020-11-29 22:15:50,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:15:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-11-29 22:15:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 239. [2020-11-29 22:15:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-11-29 22:15:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 296 transitions. [2020-11-29 22:15:50,234 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 296 transitions. Word has length 89 [2020-11-29 22:15:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:50,235 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 296 transitions. [2020-11-29 22:15:50,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:15:50,235 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 296 transitions. [2020-11-29 22:15:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 22:15:50,236 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:50,237 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:50,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-29 22:15:50,464 INFO L429 AbstractCegarLoop]: === Iteration 29 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1937560455, now seen corresponding path program 1 times [2020-11-29 22:15:50,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:50,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602751974] [2020-11-29 22:15:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:50,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:50,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189862431] [2020-11-29 22:15:50,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:50,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:15:50,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-29 22:15:50,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602751974] [2020-11-29 22:15:50,580 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:50,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189862431] [2020-11-29 22:15:50,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:50,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 22:15:50,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903139176] [2020-11-29 22:15:50,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:15:50,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:50,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:15:50,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:15:50,583 INFO L87 Difference]: Start difference. First operand 239 states and 296 transitions. Second operand 6 states. [2020-11-29 22:15:50,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:50,725 INFO L93 Difference]: Finished difference Result 303 states and 370 transitions. [2020-11-29 22:15:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:15:50,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-11-29 22:15:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:50,730 INFO L225 Difference]: With dead ends: 303 [2020-11-29 22:15:50,730 INFO L226 Difference]: Without dead ends: 302 [2020-11-29 22:15:50,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:50,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-11-29 22:15:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 281. [2020-11-29 22:15:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-11-29 22:15:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 361 transitions. [2020-11-29 22:15:50,759 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 361 transitions. Word has length 83 [2020-11-29 22:15:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:50,760 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 361 transitions. [2020-11-29 22:15:50,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:15:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 361 transitions. [2020-11-29 22:15:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-29 22:15:50,763 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:50,763 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:50,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-29 22:15:50,988 INFO L429 AbstractCegarLoop]: === Iteration 30 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:50,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:50,989 INFO L82 PathProgramCache]: Analyzing trace with hash -654322518, now seen corresponding path program 1 times [2020-11-29 22:15:50,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:50,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108430067] [2020-11-29 22:15:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:50,996 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:51,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444515979] [2020-11-29 22:15:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:51,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:15:51,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-29 22:15:51,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108430067] [2020-11-29 22:15:51,218 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:51,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444515979] [2020-11-29 22:15:51,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:51,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 22:15:51,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186628276] [2020-11-29 22:15:51,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:15:51,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:51,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:15:51,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:15:51,219 INFO L87 Difference]: Start difference. First operand 281 states and 361 transitions. Second operand 10 states. [2020-11-29 22:15:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:51,743 INFO L93 Difference]: Finished difference Result 430 states and 531 transitions. [2020-11-29 22:15:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 22:15:51,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-11-29 22:15:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:51,747 INFO L225 Difference]: With dead ends: 430 [2020-11-29 22:15:51,748 INFO L226 Difference]: Without dead ends: 429 [2020-11-29 22:15:51,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:15:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-29 22:15:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 301. [2020-11-29 22:15:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-11-29 22:15:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 388 transitions. [2020-11-29 22:15:51,775 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 388 transitions. Word has length 90 [2020-11-29 22:15:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:51,776 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 388 transitions. [2020-11-29 22:15:51,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:15:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 388 transitions. [2020-11-29 22:15:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-29 22:15:51,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:51,778 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:51,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:15:51,992 INFO L429 AbstractCegarLoop]: === Iteration 31 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:51,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash 361947514, now seen corresponding path program 1 times [2020-11-29 22:15:51,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:51,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655028717] [2020-11-29 22:15:51,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:52,000 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:52,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384800891] [2020-11-29 22:15:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:52,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:15:52,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-11-29 22:15:52,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655028717] [2020-11-29 22:15:52,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:52,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384800891] [2020-11-29 22:15:52,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:52,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 22:15:52,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114473771] [2020-11-29 22:15:52,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:15:52,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:52,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:15:52,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:52,176 INFO L87 Difference]: Start difference. First operand 301 states and 388 transitions. Second operand 8 states. [2020-11-29 22:15:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:52,537 INFO L93 Difference]: Finished difference Result 499 states and 662 transitions. [2020-11-29 22:15:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:15:52,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-11-29 22:15:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:52,543 INFO L225 Difference]: With dead ends: 499 [2020-11-29 22:15:52,543 INFO L226 Difference]: Without dead ends: 498 [2020-11-29 22:15:52,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:15:52,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-11-29 22:15:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 457. [2020-11-29 22:15:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-11-29 22:15:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 627 transitions. [2020-11-29 22:15:52,585 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 627 transitions. Word has length 95 [2020-11-29 22:15:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:52,585 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 627 transitions. [2020-11-29 22:15:52,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:15:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 627 transitions. [2020-11-29 22:15:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 22:15:52,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:52,588 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:52,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-29 22:15:52,811 INFO L429 AbstractCegarLoop]: === Iteration 32 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:52,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:52,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1342238063, now seen corresponding path program 1 times [2020-11-29 22:15:52,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:52,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912707154] [2020-11-29 22:15:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:52,820 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:52,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476187935] [2020-11-29 22:15:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:52,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:15:52,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 59 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-29 22:15:53,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912707154] [2020-11-29 22:15:53,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:53,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476187935] [2020-11-29 22:15:53,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:53,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-29 22:15:53,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043834114] [2020-11-29 22:15:53,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:15:53,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:53,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:15:53,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:15:53,067 INFO L87 Difference]: Start difference. First operand 457 states and 627 transitions. Second operand 12 states. [2020-11-29 22:15:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:54,035 INFO L93 Difference]: Finished difference Result 899 states and 1237 transitions. [2020-11-29 22:15:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 22:15:54,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-11-29 22:15:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:54,044 INFO L225 Difference]: With dead ends: 899 [2020-11-29 22:15:54,044 INFO L226 Difference]: Without dead ends: 521 [2020-11-29 22:15:54,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:15:54,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-11-29 22:15:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 487. [2020-11-29 22:15:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-11-29 22:15:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 661 transitions. [2020-11-29 22:15:54,110 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 661 transitions. Word has length 98 [2020-11-29 22:15:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:54,111 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 661 transitions. [2020-11-29 22:15:54,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:15:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 661 transitions. [2020-11-29 22:15:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 22:15:54,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:54,113 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 7, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:54,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:15:54,340 INFO L429 AbstractCegarLoop]: === Iteration 33 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash 363186361, now seen corresponding path program 2 times [2020-11-29 22:15:54,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:54,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955980248] [2020-11-29 22:15:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:54,346 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:54,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082515959] [2020-11-29 22:15:54,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:54,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:15:54,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:15:54,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 22:15:54,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 69 proven. 14 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-11-29 22:15:54,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955980248] [2020-11-29 22:15:54,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:54,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082515959] [2020-11-29 22:15:54,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:54,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-29 22:15:54,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40265884] [2020-11-29 22:15:54,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 22:15:54,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:54,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 22:15:54,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:15:54,594 INFO L87 Difference]: Start difference. First operand 487 states and 661 transitions. Second operand 15 states. [2020-11-29 22:15:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:55,351 INFO L93 Difference]: Finished difference Result 701 states and 920 transitions. [2020-11-29 22:15:55,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 22:15:55,351 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2020-11-29 22:15:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:55,359 INFO L225 Difference]: With dead ends: 701 [2020-11-29 22:15:55,359 INFO L226 Difference]: Without dead ends: 682 [2020-11-29 22:15:55,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2020-11-29 22:15:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-11-29 22:15:55,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 493. [2020-11-29 22:15:55,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-11-29 22:15:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 664 transitions. [2020-11-29 22:15:55,396 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 664 transitions. Word has length 103 [2020-11-29 22:15:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:55,397 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 664 transitions. [2020-11-29 22:15:55,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 22:15:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 664 transitions. [2020-11-29 22:15:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 22:15:55,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:55,399 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:55,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-29 22:15:55,620 INFO L429 AbstractCegarLoop]: === Iteration 34 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1449152353, now seen corresponding path program 1 times [2020-11-29 22:15:55,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:55,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075798484] [2020-11-29 22:15:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:55,626 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:55,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923789199] [2020-11-29 22:15:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:55,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:15:55,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-11-29 22:15:55,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075798484] [2020-11-29 22:15:55,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:55,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923789199] [2020-11-29 22:15:55,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:55,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 22:15:55,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467783361] [2020-11-29 22:15:55,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:15:55,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:55,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:15:55,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:15:55,831 INFO L87 Difference]: Start difference. First operand 493 states and 664 transitions. Second operand 11 states. [2020-11-29 22:15:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:56,211 INFO L93 Difference]: Finished difference Result 534 states and 698 transitions. [2020-11-29 22:15:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 22:15:56,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-11-29 22:15:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:56,216 INFO L225 Difference]: With dead ends: 534 [2020-11-29 22:15:56,216 INFO L226 Difference]: Without dead ends: 533 [2020-11-29 22:15:56,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:15:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-11-29 22:15:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 493. [2020-11-29 22:15:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-11-29 22:15:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 662 transitions. [2020-11-29 22:15:56,249 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 662 transitions. Word has length 103 [2020-11-29 22:15:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:56,249 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 662 transitions. [2020-11-29 22:15:56,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:15:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 662 transitions. [2020-11-29 22:15:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-29 22:15:56,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:56,251 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:56,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-29 22:15:56,476 INFO L429 AbstractCegarLoop]: === Iteration 35 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:56,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:56,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1990161636, now seen corresponding path program 1 times [2020-11-29 22:15:56,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:56,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602443654] [2020-11-29 22:15:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:56,481 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:56,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924345185] [2020-11-29 22:15:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:56,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:15:56,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-11-29 22:15:56,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602443654] [2020-11-29 22:15:56,603 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:56,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924345185] [2020-11-29 22:15:56,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:15:56,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:15:56,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166920948] [2020-11-29 22:15:56,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:15:56,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:56,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:15:56,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:15:56,604 INFO L87 Difference]: Start difference. First operand 493 states and 662 transitions. Second operand 6 states. [2020-11-29 22:15:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:56,705 INFO L93 Difference]: Finished difference Result 812 states and 1094 transitions. [2020-11-29 22:15:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:15:56,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-11-29 22:15:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:56,714 INFO L225 Difference]: With dead ends: 812 [2020-11-29 22:15:56,714 INFO L226 Difference]: Without dead ends: 450 [2020-11-29 22:15:56,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:56,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-11-29 22:15:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 443. [2020-11-29 22:15:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-11-29 22:15:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 586 transitions. [2020-11-29 22:15:56,743 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 586 transitions. Word has length 104 [2020-11-29 22:15:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:56,743 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 586 transitions. [2020-11-29 22:15:56,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:15:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 586 transitions. [2020-11-29 22:15:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-29 22:15:56,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:56,745 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:56,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-29 22:15:56,959 INFO L429 AbstractCegarLoop]: === Iteration 36 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:56,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:56,960 INFO L82 PathProgramCache]: Analyzing trace with hash -454746512, now seen corresponding path program 1 times [2020-11-29 22:15:56,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:56,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926353255] [2020-11-29 22:15:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:56,966 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:56,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434568645] [2020-11-29 22:15:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:15:57,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:15:57,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 70 proven. 1 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-11-29 22:15:57,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926353255] [2020-11-29 22:15:57,133 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:57,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434568645] [2020-11-29 22:15:57,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:57,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 22:15:57,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415064274] [2020-11-29 22:15:57,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:15:57,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:57,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:15:57,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:57,135 INFO L87 Difference]: Start difference. First operand 443 states and 586 transitions. Second operand 8 states. [2020-11-29 22:15:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:57,437 INFO L93 Difference]: Finished difference Result 752 states and 1008 transitions. [2020-11-29 22:15:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:15:57,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-11-29 22:15:57,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:57,443 INFO L225 Difference]: With dead ends: 752 [2020-11-29 22:15:57,443 INFO L226 Difference]: Without dead ends: 425 [2020-11-29 22:15:57,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:15:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-11-29 22:15:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 421. [2020-11-29 22:15:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-11-29 22:15:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 554 transitions. [2020-11-29 22:15:57,471 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 554 transitions. Word has length 104 [2020-11-29 22:15:57,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:57,471 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 554 transitions. [2020-11-29 22:15:57,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:15:57,471 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 554 transitions. [2020-11-29 22:15:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-29 22:15:57,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:57,473 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:57,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-29 22:15:57,692 INFO L429 AbstractCegarLoop]: === Iteration 37 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:57,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:57,693 INFO L82 PathProgramCache]: Analyzing trace with hash 820662419, now seen corresponding path program 3 times [2020-11-29 22:15:57,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:57,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777591014] [2020-11-29 22:15:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:57,697 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:57,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353587664] [2020-11-29 22:15:57,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:57,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 22:15:57,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:15:57,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 22:15:57,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:57,954 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:15:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 22:15:58,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777591014] [2020-11-29 22:15:58,111 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:58,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353587664] [2020-11-29 22:15:58,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:58,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-29 22:15:58,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696461224] [2020-11-29 22:15:58,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 22:15:58,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:58,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 22:15:58,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:15:58,114 INFO L87 Difference]: Start difference. First operand 421 states and 554 transitions. Second operand 17 states. [2020-11-29 22:15:59,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:59,301 INFO L93 Difference]: Finished difference Result 480 states and 649 transitions. [2020-11-29 22:15:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 22:15:59,302 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-11-29 22:15:59,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:59,306 INFO L225 Difference]: With dead ends: 480 [2020-11-29 22:15:59,306 INFO L226 Difference]: Without dead ends: 478 [2020-11-29 22:15:59,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2020-11-29 22:15:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-11-29 22:15:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 455. [2020-11-29 22:15:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-11-29 22:15:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 623 transitions. [2020-11-29 22:15:59,337 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 623 transitions. Word has length 108 [2020-11-29 22:15:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:59,337 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 623 transitions. [2020-11-29 22:15:59,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 22:15:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 623 transitions. [2020-11-29 22:15:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-11-29 22:15:59,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:59,341 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:15:59,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-29 22:15:59,556 INFO L429 AbstractCegarLoop]: === Iteration 38 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:15:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:15:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash 256525554, now seen corresponding path program 2 times [2020-11-29 22:15:59,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:15:59,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723858284] [2020-11-29 22:15:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:15:59,562 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:15:59,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188659893] [2020-11-29 22:15:59,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:15:59,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 22:15:59,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:15:59,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:15:59,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:15:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-11-29 22:15:59,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723858284] [2020-11-29 22:15:59,714 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:15:59,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188659893] [2020-11-29 22:15:59,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:15:59,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 22:15:59,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774118887] [2020-11-29 22:15:59,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:15:59,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:15:59,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:15:59,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:15:59,730 INFO L87 Difference]: Start difference. First operand 455 states and 623 transitions. Second operand 5 states. [2020-11-29 22:15:59,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:15:59,876 INFO L93 Difference]: Finished difference Result 465 states and 630 transitions. [2020-11-29 22:15:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:15:59,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-11-29 22:15:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:15:59,880 INFO L225 Difference]: With dead ends: 465 [2020-11-29 22:15:59,880 INFO L226 Difference]: Without dead ends: 464 [2020-11-29 22:15:59,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:15:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-11-29 22:15:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 455. [2020-11-29 22:15:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-11-29 22:15:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 621 transitions. [2020-11-29 22:15:59,923 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 621 transitions. Word has length 114 [2020-11-29 22:15:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:15:59,924 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 621 transitions. [2020-11-29 22:15:59,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:15:59,924 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 621 transitions. [2020-11-29 22:15:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-29 22:15:59,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:15:59,926 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:00,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:16:00,140 INFO L429 AbstractCegarLoop]: === Iteration 39 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:00,141 INFO L82 PathProgramCache]: Analyzing trace with hash 511956433, now seen corresponding path program 4 times [2020-11-29 22:16:00,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:00,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335158978] [2020-11-29 22:16:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:00,145 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:00,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080166442] [2020-11-29 22:16:00,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:00,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:16:00,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:16:00,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 22:16:00,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 107 proven. 79 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-11-29 22:16:00,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335158978] [2020-11-29 22:16:00,426 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:00,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080166442] [2020-11-29 22:16:00,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:00,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-29 22:16:00,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575351357] [2020-11-29 22:16:00,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 22:16:00,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 22:16:00,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:16:00,428 INFO L87 Difference]: Start difference. First operand 455 states and 621 transitions. Second operand 15 states. [2020-11-29 22:16:01,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:01,809 INFO L93 Difference]: Finished difference Result 1203 states and 1777 transitions. [2020-11-29 22:16:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 22:16:01,809 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 118 [2020-11-29 22:16:01,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:01,814 INFO L225 Difference]: With dead ends: 1203 [2020-11-29 22:16:01,814 INFO L226 Difference]: Without dead ends: 836 [2020-11-29 22:16:01,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2020-11-29 22:16:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-11-29 22:16:01,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 523. [2020-11-29 22:16:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-11-29 22:16:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 729 transitions. [2020-11-29 22:16:01,859 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 729 transitions. Word has length 118 [2020-11-29 22:16:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:01,859 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 729 transitions. [2020-11-29 22:16:01,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 22:16:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 729 transitions. [2020-11-29 22:16:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-11-29 22:16:01,861 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:01,861 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:02,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-29 22:16:02,088 INFO L429 AbstractCegarLoop]: === Iteration 40 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:02,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1705598222, now seen corresponding path program 2 times [2020-11-29 22:16:02,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:02,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640417754] [2020-11-29 22:16:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:02,095 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:02,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973783789] [2020-11-29 22:16:02,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:02,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:16:02,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:16:02,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:16:02,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-11-29 22:16:02,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640417754] [2020-11-29 22:16:02,286 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:02,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973783789] [2020-11-29 22:16:02,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:02,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 22:16:02,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301273917] [2020-11-29 22:16:02,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:16:02,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:02,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:16:02,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:16:02,287 INFO L87 Difference]: Start difference. First operand 523 states and 729 transitions. Second operand 9 states. [2020-11-29 22:16:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:02,609 INFO L93 Difference]: Finished difference Result 585 states and 778 transitions. [2020-11-29 22:16:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 22:16:02,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 119 [2020-11-29 22:16:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:02,614 INFO L225 Difference]: With dead ends: 585 [2020-11-29 22:16:02,615 INFO L226 Difference]: Without dead ends: 584 [2020-11-29 22:16:02,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:16:02,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-11-29 22:16:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 549. [2020-11-29 22:16:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-11-29 22:16:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 756 transitions. [2020-11-29 22:16:02,649 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 756 transitions. Word has length 119 [2020-11-29 22:16:02,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:02,650 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 756 transitions. [2020-11-29 22:16:02,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:16:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 756 transitions. [2020-11-29 22:16:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-11-29 22:16:02,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:02,651 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:02,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-29 22:16:02,876 INFO L429 AbstractCegarLoop]: === Iteration 41 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:02,877 INFO L82 PathProgramCache]: Analyzing trace with hash -248388996, now seen corresponding path program 1 times [2020-11-29 22:16:02,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:02,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289985359] [2020-11-29 22:16:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:02,882 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:02,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752148135] [2020-11-29 22:16:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:16:02,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:16:02,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-11-29 22:16:03,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289985359] [2020-11-29 22:16:03,042 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:03,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752148135] [2020-11-29 22:16:03,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:03,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 22:16:03,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312611166] [2020-11-29 22:16:03,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:16:03,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:03,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:16:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:16:03,044 INFO L87 Difference]: Start difference. First operand 549 states and 756 transitions. Second operand 9 states. [2020-11-29 22:16:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:03,298 INFO L93 Difference]: Finished difference Result 583 states and 790 transitions. [2020-11-29 22:16:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:16:03,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 119 [2020-11-29 22:16:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:03,302 INFO L225 Difference]: With dead ends: 583 [2020-11-29 22:16:03,302 INFO L226 Difference]: Without dead ends: 582 [2020-11-29 22:16:03,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:16:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-11-29 22:16:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 553. [2020-11-29 22:16:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-11-29 22:16:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 761 transitions. [2020-11-29 22:16:03,337 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 761 transitions. Word has length 119 [2020-11-29 22:16:03,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:03,338 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 761 transitions. [2020-11-29 22:16:03,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:16:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 761 transitions. [2020-11-29 22:16:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-29 22:16:03,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:03,339 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 8, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:03,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:16:03,564 INFO L429 AbstractCegarLoop]: === Iteration 42 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1503745288, now seen corresponding path program 2 times [2020-11-29 22:16:03,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:03,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668899666] [2020-11-29 22:16:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:03,573 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:03,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608168900] [2020-11-29 22:16:03,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:03,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:16:03,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:16:03,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:16:03,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-11-29 22:16:03,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668899666] [2020-11-29 22:16:03,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:03,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608168900] [2020-11-29 22:16:03,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:03,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 22:16:03,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212509794] [2020-11-29 22:16:03,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:16:03,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:03,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:16:03,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:16:03,808 INFO L87 Difference]: Start difference. First operand 553 states and 761 transitions. Second operand 11 states. [2020-11-29 22:16:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:04,165 INFO L93 Difference]: Finished difference Result 615 states and 823 transitions. [2020-11-29 22:16:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 22:16:04,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-11-29 22:16:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:04,168 INFO L225 Difference]: With dead ends: 615 [2020-11-29 22:16:04,169 INFO L226 Difference]: Without dead ends: 614 [2020-11-29 22:16:04,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:16:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-11-29 22:16:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 583. [2020-11-29 22:16:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-11-29 22:16:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 794 transitions. [2020-11-29 22:16:04,205 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 794 transitions. Word has length 124 [2020-11-29 22:16:04,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:04,206 INFO L481 AbstractCegarLoop]: Abstraction has 583 states and 794 transitions. [2020-11-29 22:16:04,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:16:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 794 transitions. [2020-11-29 22:16:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-29 22:16:04,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:04,207 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:04,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-11-29 22:16:04,420 INFO L429 AbstractCegarLoop]: === Iteration 43 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:04,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1544324153, now seen corresponding path program 1 times [2020-11-29 22:16:04,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:04,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184516337] [2020-11-29 22:16:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:04,427 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:04,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747059394] [2020-11-29 22:16:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:16:04,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:16:04,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 43 proven. 7 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-11-29 22:16:04,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184516337] [2020-11-29 22:16:04,611 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:04,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747059394] [2020-11-29 22:16:04,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:04,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 22:16:04,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054899208] [2020-11-29 22:16:04,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:16:04,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:04,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:16:04,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:16:04,613 INFO L87 Difference]: Start difference. First operand 583 states and 794 transitions. Second operand 9 states. [2020-11-29 22:16:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:05,023 INFO L93 Difference]: Finished difference Result 981 states and 1371 transitions. [2020-11-29 22:16:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:16:05,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-11-29 22:16:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:05,028 INFO L225 Difference]: With dead ends: 981 [2020-11-29 22:16:05,029 INFO L226 Difference]: Without dead ends: 596 [2020-11-29 22:16:05,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:16:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-11-29 22:16:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 583. [2020-11-29 22:16:05,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-11-29 22:16:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 792 transitions. [2020-11-29 22:16:05,065 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 792 transitions. Word has length 124 [2020-11-29 22:16:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:05,065 INFO L481 AbstractCegarLoop]: Abstraction has 583 states and 792 transitions. [2020-11-29 22:16:05,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:16:05,065 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 792 transitions. [2020-11-29 22:16:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-29 22:16:05,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:05,067 INFO L422 BasicCegarLoop]: trace histogram [15, 13, 9, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:05,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:16:05,280 INFO L429 AbstractCegarLoop]: === Iteration 44 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:05,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1496520051, now seen corresponding path program 2 times [2020-11-29 22:16:05,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:05,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390272956] [2020-11-29 22:16:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:05,286 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:05,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494197418] [2020-11-29 22:16:05,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:05,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:16:05,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:16:05,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:16:05,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 190 proven. 13 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-11-29 22:16:05,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390272956] [2020-11-29 22:16:05,529 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:05,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494197418] [2020-11-29 22:16:05,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:05,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 22:16:05,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138073583] [2020-11-29 22:16:05,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:16:05,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:05,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:16:05,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:16:05,531 INFO L87 Difference]: Start difference. First operand 583 states and 792 transitions. Second operand 11 states. [2020-11-29 22:16:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:06,047 INFO L93 Difference]: Finished difference Result 1032 states and 1416 transitions. [2020-11-29 22:16:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 22:16:06,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-11-29 22:16:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:06,052 INFO L225 Difference]: With dead ends: 1032 [2020-11-29 22:16:06,052 INFO L226 Difference]: Without dead ends: 611 [2020-11-29 22:16:06,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:16:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-11-29 22:16:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 585. [2020-11-29 22:16:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-11-29 22:16:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 789 transitions. [2020-11-29 22:16:06,093 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 789 transitions. Word has length 142 [2020-11-29 22:16:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:06,093 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 789 transitions. [2020-11-29 22:16:06,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:16:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 789 transitions. [2020-11-29 22:16:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-29 22:16:06,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:06,095 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:06,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-11-29 22:16:06,308 INFO L429 AbstractCegarLoop]: === Iteration 45 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:06,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1261637189, now seen corresponding path program 2 times [2020-11-29 22:16:06,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:06,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912889205] [2020-11-29 22:16:06,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:06,314 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:06,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422195632] [2020-11-29 22:16:06,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:06,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:16:06,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:16:06,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 22:16:06,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:06,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:16:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 115 proven. 32 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-11-29 22:16:06,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912889205] [2020-11-29 22:16:06,973 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:06,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422195632] [2020-11-29 22:16:06,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:06,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-29 22:16:06,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516631797] [2020-11-29 22:16:06,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 22:16:06,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:06,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 22:16:06,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:16:06,975 INFO L87 Difference]: Start difference. First operand 585 states and 789 transitions. Second operand 17 states. [2020-11-29 22:16:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:09,793 INFO L93 Difference]: Finished difference Result 611 states and 800 transitions. [2020-11-29 22:16:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 22:16:09,794 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2020-11-29 22:16:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:09,797 INFO L225 Difference]: With dead ends: 611 [2020-11-29 22:16:09,797 INFO L226 Difference]: Without dead ends: 607 [2020-11-29 22:16:09,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 22:16:09,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-11-29 22:16:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 585. [2020-11-29 22:16:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-11-29 22:16:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 785 transitions. [2020-11-29 22:16:09,832 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 785 transitions. Word has length 134 [2020-11-29 22:16:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:09,833 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 785 transitions. [2020-11-29 22:16:09,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 22:16:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 785 transitions. [2020-11-29 22:16:09,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-29 22:16:09,834 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:09,834 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 9, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:10,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-11-29 22:16:10,048 INFO L429 AbstractCegarLoop]: === Iteration 46 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:10,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1167495327, now seen corresponding path program 5 times [2020-11-29 22:16:10,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:10,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897016877] [2020-11-29 22:16:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:10,053 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:10,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516340632] [2020-11-29 22:16:10,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:10,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-29 22:16:10,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:16:10,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 22:16:10,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-11-29 22:16:10,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897016877] [2020-11-29 22:16:10,232 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:10,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516340632] [2020-11-29 22:16:10,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:10,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 22:16:10,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657821012] [2020-11-29 22:16:10,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:16:10,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:10,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:16:10,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:16:10,233 INFO L87 Difference]: Start difference. First operand 585 states and 785 transitions. Second operand 8 states. [2020-11-29 22:16:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:10,466 INFO L93 Difference]: Finished difference Result 616 states and 820 transitions. [2020-11-29 22:16:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:16:10,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-11-29 22:16:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:10,471 INFO L225 Difference]: With dead ends: 616 [2020-11-29 22:16:10,471 INFO L226 Difference]: Without dead ends: 615 [2020-11-29 22:16:10,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:16:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-11-29 22:16:10,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 594. [2020-11-29 22:16:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-11-29 22:16:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 794 transitions. [2020-11-29 22:16:10,505 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 794 transitions. Word has length 142 [2020-11-29 22:16:10,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:10,505 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 794 transitions. [2020-11-29 22:16:10,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:16:10,505 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 794 transitions. [2020-11-29 22:16:10,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-29 22:16:10,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:10,507 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:10,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-11-29 22:16:10,720 INFO L429 AbstractCegarLoop]: === Iteration 47 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1308364916, now seen corresponding path program 1 times [2020-11-29 22:16:10,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:10,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557953949] [2020-11-29 22:16:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:10,726 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:10,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903110213] [2020-11-29 22:16:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:16:10,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:16:10,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2020-11-29 22:16:10,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557953949] [2020-11-29 22:16:10,908 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:10,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903110213] [2020-11-29 22:16:10,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:10,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 22:16:10,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294042377] [2020-11-29 22:16:10,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:16:10,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:10,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:16:10,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:16:10,909 INFO L87 Difference]: Start difference. First operand 594 states and 794 transitions. Second operand 9 states. [2020-11-29 22:16:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:11,230 INFO L93 Difference]: Finished difference Result 844 states and 1126 transitions. [2020-11-29 22:16:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:16:11,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-11-29 22:16:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:11,234 INFO L225 Difference]: With dead ends: 844 [2020-11-29 22:16:11,235 INFO L226 Difference]: Without dead ends: 604 [2020-11-29 22:16:11,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:16:11,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-11-29 22:16:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-11-29 22:16:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-11-29 22:16:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 792 transitions. [2020-11-29 22:16:11,269 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 792 transitions. Word has length 142 [2020-11-29 22:16:11,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:11,269 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 792 transitions. [2020-11-29 22:16:11,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:16:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 792 transitions. [2020-11-29 22:16:11,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-29 22:16:11,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:11,271 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 9, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:11,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-11-29 22:16:11,496 INFO L429 AbstractCegarLoop]: === Iteration 48 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:11,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2053263103, now seen corresponding path program 2 times [2020-11-29 22:16:11,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:11,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012756724] [2020-11-29 22:16:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:11,502 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:11,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720723624] [2020-11-29 22:16:11,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:11,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:16:11,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:16:11,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:16:11,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-11-29 22:16:11,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012756724] [2020-11-29 22:16:11,647 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:11,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720723624] [2020-11-29 22:16:11,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:11,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 22:16:11,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414394330] [2020-11-29 22:16:11,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:16:11,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:11,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:16:11,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:16:11,649 INFO L87 Difference]: Start difference. First operand 594 states and 792 transitions. Second operand 8 states. [2020-11-29 22:16:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:16:11,807 INFO L93 Difference]: Finished difference Result 711 states and 951 transitions. [2020-11-29 22:16:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:16:11,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-11-29 22:16:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:16:11,813 INFO L225 Difference]: With dead ends: 711 [2020-11-29 22:16:11,813 INFO L226 Difference]: Without dead ends: 710 [2020-11-29 22:16:11,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:16:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-11-29 22:16:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 680. [2020-11-29 22:16:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-11-29 22:16:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 936 transitions. [2020-11-29 22:16:11,868 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 936 transitions. Word has length 143 [2020-11-29 22:16:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:16:11,869 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 936 transitions. [2020-11-29 22:16:11,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:16:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 936 transitions. [2020-11-29 22:16:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-11-29 22:16:11,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:16:11,870 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 9, 7, 7, 7, 7, 7, 7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:16:12,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:16:12,096 INFO L429 AbstractCegarLoop]: === Iteration 49 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:16:12,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:16:12,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1304605921, now seen corresponding path program 6 times [2020-11-29 22:16:12,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:16:12,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973764459] [2020-11-29 22:16:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:16:12,102 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:16:12,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14404835] [2020-11-29 22:16:12,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97534e5f-0654-4605-ac84-052759ac55b7/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 22:16:12,185 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-29 22:16:12,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:16:12,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 22:16:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:16:12,281 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:16:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 173 proven. 13 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-11-29 22:16:24,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973764459] [2020-11-29 22:16:24,982 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:16:24,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14404835] [2020-11-29 22:16:24,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:16:24,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 22:16:24,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134495156] [2020-11-29 22:16:24,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:16:24,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:16:24,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:16:24,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=59, Unknown=3, NotChecked=0, Total=90 [2020-11-29 22:16:24,984 INFO L87 Difference]: Start difference. First operand 680 states and 936 transitions. Second operand 10 states. [2020-11-29 22:16:33,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-29 22:16:33,543 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:759) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 31 more [2020-11-29 22:16:33,548 INFO L168 Benchmark]: Toolchain (without parser) took 81417.57 ms. Allocated memory was 102.8 MB in the beginning and 218.1 MB in the end (delta: 115.3 MB). Free memory was 72.8 MB in the beginning and 96.9 MB in the end (delta: -24.1 MB). Peak memory consumption was 90.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:16:33,548 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 73.4 MB. Free memory was 35.3 MB in the beginning and 35.2 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:16:33,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.06 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 80.7 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:16:33,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.61 ms. Allocated memory is still 102.8 MB. Free memory was 80.3 MB in the beginning and 78.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:16:33,549 INFO L168 Benchmark]: Boogie Preprocessor took 52.58 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 77.8 MB in the end (delta: 881.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:16:33,549 INFO L168 Benchmark]: RCFGBuilder took 878.01 ms. Allocated memory is still 102.8 MB. Free memory was 77.8 MB in the beginning and 59.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:16:33,550 INFO L168 Benchmark]: TraceAbstraction took 80053.81 ms. Allocated memory was 102.8 MB in the beginning and 218.1 MB in the end (delta: 115.3 MB). Free memory was 58.6 MB in the beginning and 96.9 MB in the end (delta: -38.3 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:16:33,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 73.4 MB. Free memory was 35.3 MB in the beginning and 35.2 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.06 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 80.7 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.61 ms. Allocated memory is still 102.8 MB. Free memory was 80.3 MB in the beginning and 78.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.58 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 77.8 MB in the end (delta: 881.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 878.01 ms. Allocated memory is still 102.8 MB. Free memory was 77.8 MB in the beginning and 59.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 80053.81 ms. Allocated memory was 102.8 MB in the beginning and 218.1 MB in the end (delta: 115.3 MB). Free memory was 58.6 MB in the beginning and 96.9 MB in the end (delta: -38.3 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...