./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.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_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:17:31,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:17:31,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:17:31,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:17:31,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:17:31,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:17:31,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:17:31,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:17:31,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:17:31,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:17:31,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:17:31,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:17:31,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:17:31,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:17:31,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:17:31,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:17:31,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:17:31,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:17:31,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:17:31,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:17:31,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:17:31,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:17:31,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:17:31,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:17:31,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:17:31,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:17:31,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:17:31,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:17:31,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:17:31,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:17:31,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:17:31,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:17:31,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:17:31,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:17:31,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:17:31,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:17:31,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:17:31,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:17:31,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:17:31,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:17:31,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:17:31,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 22:17:31,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:17:31,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:17:31,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:17:31,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:17:31,835 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:17:31,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:17:31,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:17:31,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:17:31,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:17:31,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:17:31,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:17:31,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:17:31,838 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 22:17:31,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:17:31,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:17:31,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:17:31,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:17:31,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:17:31,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:17:31,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:17:31,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:17:31,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:17:31,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:17:31,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:17:31,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:17:31,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:17:31,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:17:31,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:17:31,842 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_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2020-11-29 22:17:32,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:17:32,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:17:32,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:17:32,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:17:32,224 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:17:32,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-29 22:17:32,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/data/e90b2766a/6c369a5bee60454c8ed6a885f33f3b6a/FLAGc5f714b6c [2020-11-29 22:17:32,897 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:17:32,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-29 22:17:32,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/data/e90b2766a/6c369a5bee60454c8ed6a885f33f3b6a/FLAGc5f714b6c [2020-11-29 22:17:33,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/data/e90b2766a/6c369a5bee60454c8ed6a885f33f3b6a [2020-11-29 22:17:33,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:17:33,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:17:33,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:17:33,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:17:33,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:17:33,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d84314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33, skipping insertion in model container [2020-11-29 22:17:33,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:17:33,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:17:33,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:17:33,482 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:17:33,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:17:33,532 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:17:33,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33 WrapperNode [2020-11-29 22:17:33,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:17:33,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:17:33,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:17:33,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:17:33,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:17:33,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:17:33,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:17:33,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:17:33,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... [2020-11-29 22:17:33,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:17:33,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:17:33,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:17:33,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:17:33,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:17:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:17:34,197 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:17:34,198 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 22:17:34,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:17:34 BoogieIcfgContainer [2020-11-29 22:17:34,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:17:34,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:17:34,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:17:34,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:17:34,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:17:33" (1/3) ... [2020-11-29 22:17:34,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b1b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:17:34, skipping insertion in model container [2020-11-29 22:17:34,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:17:33" (2/3) ... [2020-11-29 22:17:34,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b1b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:17:34, skipping insertion in model container [2020-11-29 22:17:34,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:17:34" (3/3) ... [2020-11-29 22:17:34,213 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-29 22:17:34,224 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:17:34,229 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 22:17:34,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 22:17:34,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:17:34,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:17:34,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:17:34,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:17:34,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:17:34,279 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:17:34,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:17:34,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:17:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-29 22:17:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 22:17:34,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:34,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 22:17:34,307 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:34,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:34,315 INFO L82 PathProgramCache]: Analyzing trace with hash 29685899, now seen corresponding path program 1 times [2020-11-29 22:17:34,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:34,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985127555] [2020-11-29 22:17:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:34,469 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 22:17:34,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985127555] [2020-11-29 22:17:34,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:34,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:17:34,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238384478] [2020-11-29 22:17:34,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:17:34,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:34,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:17:34,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:17:34,495 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-11-29 22:17:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:34,517 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-11-29 22:17:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:17:34,518 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-29 22:17:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:34,528 INFO L225 Difference]: With dead ends: 50 [2020-11-29 22:17:34,528 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 22:17:34,534 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 22:17:34,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 22:17:34,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 22:17:34,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 22:17:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-29 22:17:34,579 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 5 [2020-11-29 22:17:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:34,579 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-29 22:17:34,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:17:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-29 22:17:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 22:17:34,580 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:34,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 22:17:34,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:17:34,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash 29685000, now seen corresponding path program 1 times [2020-11-29 22:17:34,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:34,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375912746] [2020-11-29 22:17:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:34,649 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 22:17:34,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375912746] [2020-11-29 22:17:34,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:34,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:17:34,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624034665] [2020-11-29 22:17:34,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:17:34,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:34,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:17:34,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:34,653 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2020-11-29 22:17:34,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:34,759 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-11-29 22:17:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:17:34,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 22:17:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:34,762 INFO L225 Difference]: With dead ends: 41 [2020-11-29 22:17:34,762 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 22:17:34,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 22:17:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2020-11-29 22:17:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 22:17:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-29 22:17:34,768 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2020-11-29 22:17:34,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:34,769 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-29 22:17:34,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:17:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-29 22:17:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 22:17:34,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:34,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 22:17:34,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:17:34,770 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:34,771 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-11-29 22:17:34,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:34,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901983236] [2020-11-29 22:17:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:34,839 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 22:17:34,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901983236] [2020-11-29 22:17:34,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:34,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:17:34,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827061417] [2020-11-29 22:17:34,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:17:34,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:34,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:17:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:34,842 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2020-11-29 22:17:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:34,899 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-11-29 22:17:34,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:17:34,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 22:17:34,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:34,902 INFO L225 Difference]: With dead ends: 34 [2020-11-29 22:17:34,902 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 22:17:34,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 22:17:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-11-29 22:17:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 22:17:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-11-29 22:17:34,909 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2020-11-29 22:17:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:34,909 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-11-29 22:17:34,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:17:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-11-29 22:17:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 22:17:34,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:34,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:17:34,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:17:34,916 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:34,917 INFO L82 PathProgramCache]: Analyzing trace with hash 920235084, now seen corresponding path program 1 times [2020-11-29 22:17:34,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:34,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921464155] [2020-11-29 22:17:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:34,979 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 22:17:34,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921464155] [2020-11-29 22:17:34,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:34,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:17:34,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973937906] [2020-11-29 22:17:34,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:17:34,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:34,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:17:34,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:34,982 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2020-11-29 22:17:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:35,028 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-11-29 22:17:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:17:35,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-29 22:17:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:35,031 INFO L225 Difference]: With dead ends: 45 [2020-11-29 22:17:35,031 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 22:17:35,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 22:17:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-11-29 22:17:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:17:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-11-29 22:17:35,045 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 6 [2020-11-29 22:17:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:35,045 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-11-29 22:17:35,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:17:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-11-29 22:17:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 22:17:35,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:35,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:17:35,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:17:35,047 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:35,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:35,047 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2020-11-29 22:17:35,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:35,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374274690] [2020-11-29 22:17:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:35,094 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 22:17:35,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374274690] [2020-11-29 22:17:35,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:35,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:17:35,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734215132] [2020-11-29 22:17:35,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:17:35,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:35,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:17:35,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:35,097 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 3 states. [2020-11-29 22:17:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:35,120 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-11-29 22:17:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:17:35,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-29 22:17:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:35,123 INFO L225 Difference]: With dead ends: 31 [2020-11-29 22:17:35,123 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 22:17:35,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 22:17:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-29 22:17:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 22:17:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-11-29 22:17:35,130 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 6 [2020-11-29 22:17:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:35,130 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-11-29 22:17:35,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:17:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-11-29 22:17:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:17:35,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:35,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:35,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:17:35,135 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:35,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1537451600, now seen corresponding path program 1 times [2020-11-29 22:17:35,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:35,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613989285] [2020-11-29 22:17:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:35,183 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 22:17:35,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613989285] [2020-11-29 22:17:35,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:35,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 22:17:35,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994822532] [2020-11-29 22:17:35,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:17:35,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:35,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:17:35,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:35,186 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2020-11-29 22:17:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:35,242 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-11-29 22:17:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:17:35,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-29 22:17:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:35,245 INFO L225 Difference]: With dead ends: 30 [2020-11-29 22:17:35,245 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 22:17:35,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 22:17:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 22:17:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 22:17:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 22:17:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-11-29 22:17:35,258 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2020-11-29 22:17:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:35,258 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-29 22:17:35,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:17:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-11-29 22:17:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:17:35,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:35,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:35,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:17:35,265 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:35,267 INFO L82 PathProgramCache]: Analyzing trace with hash -416359280, now seen corresponding path program 1 times [2020-11-29 22:17:35,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:35,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329202494] [2020-11-29 22:17:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:35,313 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 22:17:35,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329202494] [2020-11-29 22:17:35,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:35,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:17:35,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111623260] [2020-11-29 22:17:35,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:17:35,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:35,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:17:35,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:35,316 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 3 states. [2020-11-29 22:17:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:35,335 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-11-29 22:17:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:17:35,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 22:17:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:35,336 INFO L225 Difference]: With dead ends: 29 [2020-11-29 22:17:35,336 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 22:17:35,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:17:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 22:17:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 22:17:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 22:17:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-29 22:17:35,346 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 8 [2020-11-29 22:17:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:35,347 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-29 22:17:35,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:17:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-29 22:17:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:17:35,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:35,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-29 22:17:35,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:17:35,348 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:35,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:35,348 INFO L82 PathProgramCache]: Analyzing trace with hash -52819969, now seen corresponding path program 1 times [2020-11-29 22:17:35,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:35,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824772319] [2020-11-29 22:17:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:35,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824772319] [2020-11-29 22:17:35,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821073803] [2020-11-29 22:17:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:35,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:17:35,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:35,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:35,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-29 22:17:35,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272153556] [2020-11-29 22:17:35,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:17:35,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:35,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:17:35,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:35,507 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-29 22:17:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:35,595 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-11-29 22:17:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:17:35,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 22:17:35,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:35,597 INFO L225 Difference]: With dead ends: 54 [2020-11-29 22:17:35,597 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 22:17:35,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 22:17:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2020-11-29 22:17:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 22:17:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-11-29 22:17:35,608 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 9 [2020-11-29 22:17:35,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:35,608 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-11-29 22:17:35,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:17:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-11-29 22:17:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:17:35,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:35,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:35,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-29 22:17:35,831 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:35,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:35,831 INFO L82 PathProgramCache]: Analyzing trace with hash -689307342, now seen corresponding path program 1 times [2020-11-29 22:17:35,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:35,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068126676] [2020-11-29 22:17:35,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:35,902 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 22:17:35,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068126676] [2020-11-29 22:17:35,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:35,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:17:35,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262222099] [2020-11-29 22:17:35,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:17:35,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:35,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:17:35,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:35,904 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 4 states. [2020-11-29 22:17:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:36,032 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-11-29 22:17:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:17:36,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 22:17:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:36,034 INFO L225 Difference]: With dead ends: 64 [2020-11-29 22:17:36,034 INFO L226 Difference]: Without dead ends: 62 [2020-11-29 22:17:36,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:17:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-29 22:17:36,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2020-11-29 22:17:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 22:17:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-11-29 22:17:36,042 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 10 [2020-11-29 22:17:36,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:36,042 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-11-29 22:17:36,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:17:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-11-29 22:17:36,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:17:36,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:36,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:36,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 22:17:36,045 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:36,046 INFO L82 PathProgramCache]: Analyzing trace with hash 106308951, now seen corresponding path program 1 times [2020-11-29 22:17:36,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:36,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135206336] [2020-11-29 22:17:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:36,087 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 22:17:36,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135206336] [2020-11-29 22:17:36,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:36,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:17:36,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299000655] [2020-11-29 22:17:36,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:17:36,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:36,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:17:36,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:36,089 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2020-11-29 22:17:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:36,152 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-11-29 22:17:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:17:36,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 22:17:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:36,153 INFO L225 Difference]: With dead ends: 46 [2020-11-29 22:17:36,153 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 22:17:36,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:17:36,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 22:17:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-11-29 22:17:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 22:17:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-11-29 22:17:36,160 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 11 [2020-11-29 22:17:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:36,160 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-11-29 22:17:36,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:17:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-11-29 22:17:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:17:36,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:36,161 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:36,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 22:17:36,161 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:36,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:36,162 INFO L82 PathProgramCache]: Analyzing trace with hash -999444228, now seen corresponding path program 1 times [2020-11-29 22:17:36,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:36,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058670197] [2020-11-29 22:17:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:36,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058670197] [2020-11-29 22:17:36,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824585872] [2020-11-29 22:17:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:36,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:17:36,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:36,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:36,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-29 22:17:36,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977507162] [2020-11-29 22:17:36,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:17:36,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:36,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:17:36,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:36,264 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 4 states. [2020-11-29 22:17:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:36,310 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-11-29 22:17:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:17:36,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:17:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:36,311 INFO L225 Difference]: With dead ends: 66 [2020-11-29 22:17:36,311 INFO L226 Difference]: Without dead ends: 65 [2020-11-29 22:17:36,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-29 22:17:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2020-11-29 22:17:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 22:17:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-11-29 22:17:36,324 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 12 [2020-11-29 22:17:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:36,324 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-11-29 22:17:36,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:17:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-11-29 22:17:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:17:36,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:36,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-11-29 22:17:36,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:17:36,543 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:36,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:36,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1890502518, now seen corresponding path program 2 times [2020-11-29 22:17:36,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:36,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124457387] [2020-11-29 22:17:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 22:17:36,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124457387] [2020-11-29 22:17:36,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885631291] [2020-11-29 22:17:36,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:36,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 22:17:36,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:17:36,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:17:36,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 22:17:36,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:36,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-11-29 22:17:36,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193868756] [2020-11-29 22:17:36,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:17:36,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:36,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:17:36,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:36,628 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 4 states. [2020-11-29 22:17:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:36,682 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-11-29 22:17:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:17:36,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 22:17:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:36,685 INFO L225 Difference]: With dead ends: 56 [2020-11-29 22:17:36,685 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 22:17:36,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 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 22:17:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 22:17:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-11-29 22:17:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 22:17:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-11-29 22:17:36,691 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 13 [2020-11-29 22:17:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:36,691 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-11-29 22:17:36,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:17:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-11-29 22:17:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:17:36,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:36,696 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:36,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 22:17:36,904 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:36,904 INFO L82 PathProgramCache]: Analyzing trace with hash -575852389, now seen corresponding path program 1 times [2020-11-29 22:17:36,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:36,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115333672] [2020-11-29 22:17:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:17:36,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115333672] [2020-11-29 22:17:36,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:17:36,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:17:36,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937739302] [2020-11-29 22:17:36,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:17:36,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:36,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:17:36,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:36,937 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 4 states. [2020-11-29 22:17:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:36,991 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-11-29 22:17:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:17:36,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 22:17:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:36,992 INFO L225 Difference]: With dead ends: 48 [2020-11-29 22:17:36,992 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 22:17:36,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:17:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 22:17:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-29 22:17:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 22:17:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-11-29 22:17:37,009 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 14 [2020-11-29 22:17:37,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:37,009 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-11-29 22:17:37,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:17:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-11-29 22:17:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 22:17:37,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:37,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:37,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 22:17:37,013 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash 656583171, now seen corresponding path program 1 times [2020-11-29 22:17:37,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:37,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482273725] [2020-11-29 22:17:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:37,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482273725] [2020-11-29 22:17:37,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609589035] [2020-11-29 22:17:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 22:17:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:37,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:17:37,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:17:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:37,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:37,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 22:17:37,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642475292] [2020-11-29 22:17:37,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:17:37,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:37,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:17:37,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:17:37,125 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 6 states. [2020-11-29 22:17:37,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:37,190 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-11-29 22:17:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:17:37,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 22:17:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:37,191 INFO L225 Difference]: With dead ends: 78 [2020-11-29 22:17:37,191 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 22:17:37,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:17:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 22:17:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-29 22:17:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 22:17:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-11-29 22:17:37,198 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 16 [2020-11-29 22:17:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:37,203 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-11-29 22:17:37,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:17:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-11-29 22:17:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:17:37,208 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:37,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:37,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:17:37,427 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:37,427 INFO L82 PathProgramCache]: Analyzing trace with hash 471235363, now seen corresponding path program 1 times [2020-11-29 22:17:37,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:37,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458751755] [2020-11-29 22:17:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:37,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458751755] [2020-11-29 22:17:37,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268666290] [2020-11-29 22:17:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:37,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:17:37,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:37,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:37,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 22:17:37,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619439994] [2020-11-29 22:17:37,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:17:37,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:37,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:17:37,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:17:37,538 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-11-29 22:17:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:37,700 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2020-11-29 22:17:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:17:37,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-29 22:17:37,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:37,703 INFO L225 Difference]: With dead ends: 116 [2020-11-29 22:17:37,703 INFO L226 Difference]: Without dead ends: 115 [2020-11-29 22:17:37,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:17:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-29 22:17:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 68. [2020-11-29 22:17:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 22:17:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-11-29 22:17:37,720 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 17 [2020-11-29 22:17:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:37,723 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-11-29 22:17:37,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:17:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-11-29 22:17:37,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:17:37,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:37,723 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 22:17:37,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 22:17:37,930 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash -415013654, now seen corresponding path program 2 times [2020-11-29 22:17:37,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:37,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526772693] [2020-11-29 22:17:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 22:17:38,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526772693] [2020-11-29 22:17:38,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371066940] [2020-11-29 22:17:38,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 22:17:38,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 22:17:38,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:17:38,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:17:38,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:17:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 22:17:38,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:38,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-11-29 22:17:38,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33356693] [2020-11-29 22:17:38,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:17:38,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:38,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:17:38,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:17:38,060 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2020-11-29 22:17:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:38,092 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-11-29 22:17:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:17:38,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 22:17:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:38,095 INFO L225 Difference]: With dead ends: 68 [2020-11-29 22:17:38,095 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 22:17:38,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 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 22:17:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 22:17:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 39. [2020-11-29 22:17:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 22:17:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-11-29 22:17:38,112 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 19 [2020-11-29 22:17:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:38,113 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-11-29 22:17:38,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:17:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-11-29 22:17:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:17:38,114 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:38,114 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:38,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:17:38,319 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:38,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2095953530, now seen corresponding path program 2 times [2020-11-29 22:17:38,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:38,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959898301] [2020-11-29 22:17:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:38,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959898301] [2020-11-29 22:17:38,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37848071] [2020-11-29 22:17:38,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:38,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:17:38,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:17:38,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:17:38,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:38,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:38,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 22:17:38,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129565224] [2020-11-29 22:17:38,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:17:38,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:38,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:17:38,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:17:38,479 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-11-29 22:17:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:38,674 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2020-11-29 22:17:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:17:38,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-29 22:17:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:38,676 INFO L225 Difference]: With dead ends: 92 [2020-11-29 22:17:38,676 INFO L226 Difference]: Without dead ends: 91 [2020-11-29 22:17:38,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:17:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-29 22:17:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 44. [2020-11-29 22:17:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 22:17:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-11-29 22:17:38,684 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 22 [2020-11-29 22:17:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:38,684 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-11-29 22:17:38,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:17:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-11-29 22:17:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 22:17:38,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:38,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:38,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 22:17:38,897 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:38,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:38,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1289288067, now seen corresponding path program 3 times [2020-11-29 22:17:38,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:38,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728117643] [2020-11-29 22:17:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:17:38,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728117643] [2020-11-29 22:17:38,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246832161] [2020-11-29 22:17:38,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:39,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 22:17:39,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:17:39,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:17:39,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 22:17:39,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:39,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2020-11-29 22:17:39,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052953861] [2020-11-29 22:17:39,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:17:39,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:39,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:17:39,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:17:39,093 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-11-29 22:17:39,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:39,809 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2020-11-29 22:17:39,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-29 22:17:39,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-11-29 22:17:39,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:39,811 INFO L225 Difference]: With dead ends: 143 [2020-11-29 22:17:39,811 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 22:17:39,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 22:17:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 22:17:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 60. [2020-11-29 22:17:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 22:17:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-11-29 22:17:39,830 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 27 [2020-11-29 22:17:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:39,830 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-11-29 22:17:39,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:17:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-11-29 22:17:39,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 22:17:39,833 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:39,835 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:40,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 22:17:40,036 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:40,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1685598945, now seen corresponding path program 1 times [2020-11-29 22:17:40,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:40,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032858781] [2020-11-29 22:17:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 22:17:40,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032858781] [2020-11-29 22:17:40,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947490047] [2020-11-29 22:17:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:40,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:17:40,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 22:17:40,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:17:40,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-11-29 22:17:40,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757237794] [2020-11-29 22:17:40,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:17:40,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:40,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:17:40,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:17:40,253 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 6 states. [2020-11-29 22:17:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:40,395 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2020-11-29 22:17:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:17:40,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-11-29 22:17:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:40,396 INFO L225 Difference]: With dead ends: 147 [2020-11-29 22:17:40,396 INFO L226 Difference]: Without dead ends: 102 [2020-11-29 22:17:40,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:17:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-29 22:17:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71. [2020-11-29 22:17:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 22:17:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2020-11-29 22:17:40,406 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 39 [2020-11-29 22:17:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:40,406 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2020-11-29 22:17:40,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:17:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2020-11-29 22:17:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 22:17:40,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:40,407 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 22:17:40,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:17:40,627 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:40,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:40,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1243466243, now seen corresponding path program 2 times [2020-11-29 22:17:40,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:40,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194994260] [2020-11-29 22:17:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:17:40,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194994260] [2020-11-29 22:17:40,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732067707] [2020-11-29 22:17:40,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:40,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:17:40,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:17:40,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:17:40,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:17:40,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:40,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-11-29 22:17:40,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223106922] [2020-11-29 22:17:40,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:17:40,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:40,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:17:40,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:17:40,808 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 10 states. [2020-11-29 22:17:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:41,092 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2020-11-29 22:17:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 22:17:41,092 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-11-29 22:17:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:41,093 INFO L225 Difference]: With dead ends: 142 [2020-11-29 22:17:41,093 INFO L226 Difference]: Without dead ends: 141 [2020-11-29 22:17:41,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:17:41,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-29 22:17:41,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 82. [2020-11-29 22:17:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-29 22:17:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-11-29 22:17:41,106 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 39 [2020-11-29 22:17:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:41,108 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-11-29 22:17:41,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:17:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-11-29 22:17:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 22:17:41,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:17:41,109 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 22:17:41,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:17:41,331 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 22:17:41,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:17:41,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1165798321, now seen corresponding path program 3 times [2020-11-29 22:17:41,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:17:41,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722045965] [2020-11-29 22:17:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:17:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:17:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:17:41,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722045965] [2020-11-29 22:17:41,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528147060] [2020-11-29 22:17:41,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/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 22:17:41,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 22:17:41,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:17:41,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:17:41,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:17:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-29 22:17:41,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:17:41,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3] total 13 [2020-11-29 22:17:41,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753712191] [2020-11-29 22:17:41,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:17:41,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:17:41,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:17:41,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:17:41,565 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 14 states. [2020-11-29 22:17:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:17:42,302 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2020-11-29 22:17:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-29 22:17:42,302 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-11-29 22:17:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:17:42,303 INFO L225 Difference]: With dead ends: 198 [2020-11-29 22:17:42,303 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:17:42,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=430, Invalid=830, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 22:17:42,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:17:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:17:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:17:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:17:42,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-11-29 22:17:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:17:42,306 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:17:42,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:17:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:17:42,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:17:42,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 22:17:42,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:17:42,677 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2020-11-29 22:17:42,869 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 122 [2020-11-29 22:17:43,086 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 112 [2020-11-29 22:17:43,595 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 26 [2020-11-29 22:17:44,422 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-11-29 22:17:44,922 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 28 [2020-11-29 22:17:44,925 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-29 22:17:44,926 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 34) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse5 (<= ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~j~0)) (.cse6 (<= 0 ULTIMATE.start_main_~j~0)) (.cse1 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse2 (<= 0 ULTIMATE.start_main_~N~0)) (.cse3 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse4 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse2 .cse3 (<= ULTIMATE.start_main_~j~0 0) .cse4) (and .cse5 (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse6 .cse1 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse2 .cse3 .cse4))) [2020-11-29 22:17:44,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2020-11-29 22:17:44,926 INFO L277 CegarLoopResult]: At program point L36(lines 13 37) the Hoare annotation is: true [2020-11-29 22:17:44,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-29 22:17:44,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:17:44,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-11-29 22:17:44,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:17:44,926 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-29 22:17:44,926 INFO L274 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-11-29 22:17:44,927 INFO L270 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse3 (<= 0 ULTIMATE.start_main_~N~0)) (.cse4 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse5 (< ULTIMATE.start_main_~k~0 2147483647)) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse7 (<= 0 ULTIMATE.start_main_~k~0))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse3 .cse4 .cse5 .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) .cse7) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2020-11-29 22:17:44,927 INFO L274 CegarLoopResult]: For program point L28-5(lines 28 30) no Hoare annotation was computed. [2020-11-29 22:17:44,927 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-29 22:17:44,927 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-29 22:17:44,927 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:17:44,927 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-29 22:17:44,927 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-11-29 22:17:44,927 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-11-29 22:17:44,927 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 32) the Hoare annotation is: (let ((.cse4 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse7 (<= ULTIMATE.start_main_~i~0 2147483646)) (.cse2 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse8 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1))) (.cse3 (<= 0 ULTIMATE.start_main_~N~0)) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse5 (<= ULTIMATE.start_main_~j~0 0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse7 (<= ULTIMATE.start_main_~m~0 0) .cse3 .cse4 .cse6 .cse5) (and .cse0 .cse1 (< ULTIMATE.start_main_~i~0 2147483647) .cse2 .cse8 .cse3 (< ULTIMATE.start_main_~k~0 2147483647) .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) (<= 0 ULTIMATE.start_main_~k~0)) (and (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse1 .cse7 .cse2 .cse8 .cse3 .cse6 .cse5))) [2020-11-29 22:17:44,927 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 32) no Hoare annotation was computed. [2020-11-29 22:17:44,928 INFO L274 CegarLoopResult]: For program point L21(lines 21 35) no Hoare annotation was computed. [2020-11-29 22:17:44,928 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 35) no Hoare annotation was computed. [2020-11-29 22:17:44,928 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-29 22:17:44,928 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-29 22:17:44,928 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-29 22:17:44,928 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2020-11-29 22:17:44,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:17:44 BoogieIcfgContainer [2020-11-29 22:17:44,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:17:44,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:17:44,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:17:44,951 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:17:44,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:17:34" (3/4) ... [2020-11-29 22:17:44,955 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:17:44,965 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-29 22:17:44,966 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 22:17:45,004 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5f6053ae-0d11-4aeb-9e43-9187df6a26d0/bin/uautomizer/witness.graphml [2020-11-29 22:17:45,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:17:45,005 INFO L168 Benchmark]: Toolchain (without parser) took 11745.12 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 62.6 MB in the beginning and 87.6 MB in the end (delta: -25.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:17:45,006 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 92.3 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 40.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:17:45,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.70 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 71.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:17:45,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.32 ms. Allocated memory is still 92.3 MB. Free memory was 71.1 MB in the beginning and 69.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:17:45,007 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 ms. Allocated memory is still 92.3 MB. Free memory was 69.8 MB in the beginning and 69.0 MB in the end (delta: 787.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:17:45,008 INFO L168 Benchmark]: RCFGBuilder took 592.74 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 56.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:17:45,008 INFO L168 Benchmark]: TraceAbstraction took 10746.09 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 56.4 MB in the beginning and 90.7 MB in the end (delta: -34.3 MB). Peak memory consumption was 65.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:17:45,009 INFO L168 Benchmark]: Witness Printer took 53.72 ms. Allocated memory is still 134.2 MB. Free memory was 90.7 MB in the beginning and 87.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:17:45,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 92.3 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 40.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.70 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 71.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.32 ms. Allocated memory is still 92.3 MB. Free memory was 71.1 MB in the beginning and 69.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.99 ms. Allocated memory is still 92.3 MB. Free memory was 69.8 MB in the beginning and 69.0 MB in the end (delta: 787.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 592.74 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 56.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10746.09 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 56.4 MB in the beginning and 90.7 MB in the end (delta: -34.3 MB). Peak memory consumption was 65.5 MB. Max. memory is 16.1 GB. * Witness Printer took 53.72 ms. Allocated memory is still 134.2 MB. Free memory was 90.7 MB in the beginning and 87.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((0 <= i && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && n <= 2147483647) || ((((((m <= j && 0 <= i) && 0 <= j) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647)) || (((((((m <= j && N <= i) && 0 <= j) && m <= 2147483647) && N <= k + 1) && 0 <= N) && N <= 2147483647) && n <= 2147483647) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647) || (((((((0 <= i && 0 <= j) && i <= 2147483646) && m <= 0) && 0 <= N) && N <= 2147483647) && n <= 2147483647) && j <= 0)) || (((((((((0 <= i && 0 <= j) && i < 2147483647) && m <= 2147483647) && N <= k + 1) && 0 <= N) && k < 2147483647) && n <= 2147483647) && N <= i + 1) && 0 <= k)) || (((((((N <= i && 0 <= j) && i <= 2147483646) && m <= 2147483647) && N <= k + 1) && 0 <= N) && n <= 2147483647) && j <= 0) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((0 <= i && 0 <= j) && m <= 2147483647) && N <= k + 1) && 0 <= N) && N <= 2147483647) && k < 2147483647) && n <= 2147483647) && N <= i + 1) && 0 <= k) || ((((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && k < 2147483647) && n <= 2147483647) && 0 <= k) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 21, TraceHistogramMax: 6, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 948 SDslu, 455 SDs, 0 SdLazy, 723 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 400 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 63 NumberOfFragments, 247 HoareAnnotationTreeSize, 4 FomulaSimplifications, 507289 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 4 FomulaSimplificationsInter, 68216 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 589 NumberOfCodeBlocks, 530 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 557 ConstructedInterpolants, 0 QuantifiedInterpolants, 39851 SizeOfPredicates, 24 NumberOfNonLiveVariables, 638 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 32 InterpolantComputations, 11 PerfectInterpolantSequences, 156/478 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...