./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd739f3c976da5c6062c1519d0aaa67305b41477 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:12:32,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:12:32,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:12:32,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:12:32,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:12:32,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:12:32,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:12:32,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:12:32,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:12:32,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:12:32,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:12:32,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:12:32,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:12:32,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:12:32,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:12:32,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:12:32,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:12:32,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:12:32,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:12:32,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:12:32,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:12:32,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:12:32,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:12:32,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:12:32,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:12:32,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:12:32,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:12:32,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:12:32,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:12:32,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:12:32,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:12:32,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:12:32,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:12:32,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:12:32,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:12:32,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:12:32,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:12:32,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:12:32,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:12:32,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:12:32,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:12:32,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:12:32,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:12:32,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:12:32,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:12:32,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:12:32,417 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:12:32,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:12:32,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:12:32,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:12:32,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:12:32,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:12:32,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:12:32,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:12:32,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:12:32,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:12:32,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:12:32,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:12:32,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:12:32,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:12:32,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:12:32,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:12:32,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:12:32,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:12:32,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:12:32,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:12:32,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:12:32,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:12:32,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:12:32,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:12:32,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:12:32,427 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_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd739f3c976da5c6062c1519d0aaa67305b41477 [2020-11-29 20:12:32,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:12:32,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:12:32,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:12:32,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:12:32,773 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:12:32,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2020-11-29 20:12:32,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/data/10db6df8b/3c4aa48d430449d7ae50e7005d810873/FLAG56b68a354 [2020-11-29 20:12:33,357 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:12:33,358 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2020-11-29 20:12:33,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/data/10db6df8b/3c4aa48d430449d7ae50e7005d810873/FLAG56b68a354 [2020-11-29 20:12:33,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/data/10db6df8b/3c4aa48d430449d7ae50e7005d810873 [2020-11-29 20:12:33,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:12:33,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:12:33,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:12:33,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:12:33,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:12:33,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:12:33" (1/1) ... [2020-11-29 20:12:33,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef669db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:33, skipping insertion in model container [2020-11-29 20:12:33,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:12:33" (1/1) ... [2020-11-29 20:12:33,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:12:33,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:12:33,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:12:34,004 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:12:34,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:12:34,040 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:12:34,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34 WrapperNode [2020-11-29 20:12:34,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:12:34,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:12:34,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:12:34,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:12:34,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:12:34,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:12:34,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:12:34,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:12:34,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... [2020-11-29 20:12:34,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:12:34,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:12:34,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:12:34,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:12:34,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:12:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:12:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:12:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:12:34,740 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:12:34,741 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-29 20:12:34,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:34 BoogieIcfgContainer [2020-11-29 20:12:34,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:12:34,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:12:34,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:12:34,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:12:34,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:12:33" (1/3) ... [2020-11-29 20:12:34,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9937fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:12:34, skipping insertion in model container [2020-11-29 20:12:34,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:34" (2/3) ... [2020-11-29 20:12:34,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9937fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:12:34, skipping insertion in model container [2020-11-29 20:12:34,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:34" (3/3) ... [2020-11-29 20:12:34,752 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.c [2020-11-29 20:12:34,764 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:12:34,771 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 20:12:34,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 20:12:34,827 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:12:34,827 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:12:34,827 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:12:34,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:12:34,828 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:12:34,828 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:12:34,828 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:12:34,828 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:12:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-29 20:12:34,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:12:34,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:34,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:34,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:34,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-29 20:12:34,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:34,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037367764] [2020-11-29 20:12:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:35,036 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 20:12:35,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037367764] [2020-11-29 20:12:35,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:35,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:12:35,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401859846] [2020-11-29 20:12:35,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:12:35,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:35,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:12:35,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:12:35,069 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-29 20:12:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:35,100 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-11-29 20:12:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:12:35,101 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 20:12:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:35,112 INFO L225 Difference]: With dead ends: 75 [2020-11-29 20:12:35,113 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 20:12:35,128 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 20:12:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 20:12:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 20:12:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 20:12:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-29 20:12:35,187 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-11-29 20:12:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:35,187 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-29 20:12:35,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:12:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-29 20:12:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:12:35,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:35,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:35,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:12:35,193 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:35,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-29 20:12:35,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:35,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799434316] [2020-11-29 20:12:35,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:35,406 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 20:12:35,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799434316] [2020-11-29 20:12:35,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:35,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:12:35,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194417521] [2020-11-29 20:12:35,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:12:35,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:35,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:12:35,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:12:35,410 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-11-29 20:12:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:35,521 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-11-29 20:12:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:12:35,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 20:12:35,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:35,524 INFO L225 Difference]: With dead ends: 54 [2020-11-29 20:12:35,524 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 20:12:35,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:12:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 20:12:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-11-29 20:12:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 20:12:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-29 20:12:35,533 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-11-29 20:12:35,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:35,534 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-29 20:12:35,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:12:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-29 20:12:35,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:12:35,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:35,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:35,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:12:35,539 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:35,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-29 20:12:35,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:35,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573985958] [2020-11-29 20:12:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:35,659 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 20:12:35,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573985958] [2020-11-29 20:12:35,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:35,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:12:35,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23046464] [2020-11-29 20:12:35,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:12:35,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:35,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:12:35,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:12:35,662 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2020-11-29 20:12:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:35,792 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-11-29 20:12:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:12:35,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 20:12:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:35,795 INFO L225 Difference]: With dead ends: 52 [2020-11-29 20:12:35,795 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 20:12:35,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:12:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 20:12:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2020-11-29 20:12:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:12:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-29 20:12:35,807 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-11-29 20:12:35,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:35,807 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-29 20:12:35,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:12:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-29 20:12:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:12:35,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:35,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:35,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:12:35,809 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:35,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-29 20:12:35,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:35,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634889083] [2020-11-29 20:12:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:35,825 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:35,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686313485] [2020-11-29 20:12:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:35,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:12:35,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:35,973 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 20:12:35,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634889083] [2020-11-29 20:12:35,974 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:35,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686313485] [2020-11-29 20:12:35,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:35,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:12:35,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128812904] [2020-11-29 20:12:35,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:12:35,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:35,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:12:35,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:12:35,977 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-11-29 20:12:36,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:36,156 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-11-29 20:12:36,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:12:36,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 20:12:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:36,158 INFO L225 Difference]: With dead ends: 72 [2020-11-29 20:12:36,158 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 20:12:36,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 20:12:36,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 20:12:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-29 20:12:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 20:12:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-11-29 20:12:36,170 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2020-11-29 20:12:36,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:36,170 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-11-29 20:12:36,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:12:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-11-29 20:12:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:12:36,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:36,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:36,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:36,400 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash -13373041, now seen corresponding path program 1 times [2020-11-29 20:12:36,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:36,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578276040] [2020-11-29 20:12:36,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:36,417 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:36,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969748396] [2020-11-29 20:12:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:36,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:12:36,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:36,553 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 20:12:36,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578276040] [2020-11-29 20:12:36,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:36,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969748396] [2020-11-29 20:12:36,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:36,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:12:36,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845418247] [2020-11-29 20:12:36,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:12:36,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:36,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:12:36,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:12:36,557 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2020-11-29 20:12:36,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:36,678 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-11-29 20:12:36,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:12:36,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 20:12:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:36,681 INFO L225 Difference]: With dead ends: 63 [2020-11-29 20:12:36,681 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 20:12:36,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 20:12:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 20:12:36,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-11-29 20:12:36,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 20:12:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-29 20:12:36,689 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-11-29 20:12:36,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:36,690 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-29 20:12:36,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:12:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-29 20:12:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:12:36,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:36,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:36,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:36,910 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:36,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:36,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-29 20:12:36,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:36,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743629657] [2020-11-29 20:12:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:36,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:36,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562686438] [2020-11-29 20:12:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:36,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 20:12:36,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:12:37,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743629657] [2020-11-29 20:12:37,069 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:37,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562686438] [2020-11-29 20:12:37,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:37,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:12:37,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396449595] [2020-11-29 20:12:37,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:12:37,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:37,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:12:37,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:12:37,072 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-29 20:12:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:37,279 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2020-11-29 20:12:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:12:37,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 20:12:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:37,280 INFO L225 Difference]: With dead ends: 108 [2020-11-29 20:12:37,280 INFO L226 Difference]: Without dead ends: 71 [2020-11-29 20:12:37,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:12:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-29 20:12:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-11-29 20:12:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 20:12:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-11-29 20:12:37,291 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 18 [2020-11-29 20:12:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:37,292 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-11-29 20:12:37,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:12:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-11-29 20:12:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:12:37,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:37,293 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:37,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:37,512 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:37,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:37,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 2 times [2020-11-29 20:12:37,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:37,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555889388] [2020-11-29 20:12:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:37,523 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:37,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276679636] [2020-11-29 20:12:37,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:37,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:12:37,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:12:37,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 20:12:37,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:12:37,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555889388] [2020-11-29 20:12:37,692 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:37,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276679636] [2020-11-29 20:12:37,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:37,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 20:12:37,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039870726] [2020-11-29 20:12:37,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:12:37,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:37,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:12:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:12:37,694 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-11-29 20:12:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:38,006 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2020-11-29 20:12:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:12:38,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-29 20:12:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:38,008 INFO L225 Difference]: With dead ends: 142 [2020-11-29 20:12:38,008 INFO L226 Difference]: Without dead ends: 105 [2020-11-29 20:12:38,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:12:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-29 20:12:38,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2020-11-29 20:12:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-29 20:12:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-11-29 20:12:38,024 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 25 [2020-11-29 20:12:38,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:38,025 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-11-29 20:12:38,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:12:38,025 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-11-29 20:12:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 20:12:38,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:38,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:38,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:38,228 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:38,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1085203663, now seen corresponding path program 1 times [2020-11-29 20:12:38,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:38,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999515530] [2020-11-29 20:12:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:38,245 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:38,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410624685] [2020-11-29 20:12:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:38,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 20:12:38,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:12:38,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999515530] [2020-11-29 20:12:38,446 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:38,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410624685] [2020-11-29 20:12:38,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:38,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 20:12:38,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863250439] [2020-11-29 20:12:38,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:12:38,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:38,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:12:38,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:12:38,448 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 6 states. [2020-11-29 20:12:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:38,721 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2020-11-29 20:12:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:12:38,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 20:12:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:38,723 INFO L225 Difference]: With dead ends: 102 [2020-11-29 20:12:38,723 INFO L226 Difference]: Without dead ends: 100 [2020-11-29 20:12:38,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:12:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-29 20:12:38,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2020-11-29 20:12:38,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 20:12:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2020-11-29 20:12:38,751 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 27 [2020-11-29 20:12:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:38,753 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2020-11-29 20:12:38,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:12:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2020-11-29 20:12:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 20:12:38,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:38,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:38,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:38,972 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1129109896, now seen corresponding path program 1 times [2020-11-29 20:12:38,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:38,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241648798] [2020-11-29 20:12:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:38,985 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:38,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671913878] [2020-11-29 20:12:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:39,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 20:12:39,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:39,168 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 20:12:39,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241648798] [2020-11-29 20:12:39,170 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:39,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671913878] [2020-11-29 20:12:39,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:39,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:12:39,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681258410] [2020-11-29 20:12:39,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:12:39,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:39,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:12:39,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:12:39,180 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 7 states. [2020-11-29 20:12:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:39,468 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-11-29 20:12:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:12:39,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-11-29 20:12:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:39,470 INFO L225 Difference]: With dead ends: 100 [2020-11-29 20:12:39,471 INFO L226 Difference]: Without dead ends: 85 [2020-11-29 20:12:39,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:12:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-29 20:12:39,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-29 20:12:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-29 20:12:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-11-29 20:12:39,498 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 32 [2020-11-29 20:12:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:39,499 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-11-29 20:12:39,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:12:39,499 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-11-29 20:12:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 20:12:39,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:39,504 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:39,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:39,714 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:39,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1575226400, now seen corresponding path program 3 times [2020-11-29 20:12:39,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:39,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303506889] [2020-11-29 20:12:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:39,724 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:39,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625748486] [2020-11-29 20:12:39,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:39,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:12:39,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:12:39,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 20:12:39,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:39,816 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:12:39,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:12:39,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303506889] [2020-11-29 20:12:39,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:39,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625748486] [2020-11-29 20:12:39,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:39,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:12:39,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315120455] [2020-11-29 20:12:39,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:12:39,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:39,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:12:39,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:12:39,922 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 7 states. [2020-11-29 20:12:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:40,199 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2020-11-29 20:12:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:12:40,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-11-29 20:12:40,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:40,201 INFO L225 Difference]: With dead ends: 96 [2020-11-29 20:12:40,201 INFO L226 Difference]: Without dead ends: 86 [2020-11-29 20:12:40,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:12:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-29 20:12:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-29 20:12:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-29 20:12:40,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-11-29 20:12:40,217 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 32 [2020-11-29 20:12:40,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:40,218 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-11-29 20:12:40,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:12:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-11-29 20:12:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 20:12:40,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:40,219 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:40,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 20:12:40,447 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:40,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:40,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1042348646, now seen corresponding path program 2 times [2020-11-29 20:12:40,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:40,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524197509] [2020-11-29 20:12:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:40,457 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:40,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330699956] [2020-11-29 20:12:40,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:40,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:12:40,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:12:40,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 20:12:40,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:12:40,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524197509] [2020-11-29 20:12:40,677 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:40,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330699956] [2020-11-29 20:12:40,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:40,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:12:40,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342552823] [2020-11-29 20:12:40,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:12:40,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:40,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:12:40,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:12:40,679 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 7 states. [2020-11-29 20:12:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:41,053 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-11-29 20:12:41,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:12:41,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-29 20:12:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:41,055 INFO L225 Difference]: With dead ends: 99 [2020-11-29 20:12:41,055 INFO L226 Difference]: Without dead ends: 97 [2020-11-29 20:12:41,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:12:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-29 20:12:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-11-29 20:12:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 20:12:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-11-29 20:12:41,088 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 34 [2020-11-29 20:12:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:41,091 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-11-29 20:12:41,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:12:41,092 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-11-29 20:12:41,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 20:12:41,097 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:41,098 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:41,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-29 20:12:41,319 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1894983429, now seen corresponding path program 3 times [2020-11-29 20:12:41,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:41,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233629294] [2020-11-29 20:12:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:41,327 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:41,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564374865] [2020-11-29 20:12:41,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:41,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 20:12:41,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:12:41,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-29 20:12:41,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:41,591 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:12:41,608 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 20:12:41,710 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 20:12:42,084 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 31 [2020-11-29 20:12:42,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:12:42,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,210 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,231 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,248 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:12:42,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233629294] [2020-11-29 20:12:42,374 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:42,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564374865] [2020-11-29 20:12:42,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:42,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 20:12:42,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937288499] [2020-11-29 20:12:42,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:12:42,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:42,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:12:42,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:12:42,377 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 11 states. [2020-11-29 20:12:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:43,114 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-11-29 20:12:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 20:12:43,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-11-29 20:12:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:43,116 INFO L225 Difference]: With dead ends: 107 [2020-11-29 20:12:43,117 INFO L226 Difference]: Without dead ends: 105 [2020-11-29 20:12:43,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-11-29 20:12:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-29 20:12:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-11-29 20:12:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 20:12:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-11-29 20:12:43,131 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 40 [2020-11-29 20:12:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:43,132 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-11-29 20:12:43,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:12:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-11-29 20:12:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 20:12:43,133 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:43,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:43,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:43,360 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:43,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:43,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1501956419, now seen corresponding path program 1 times [2020-11-29 20:12:43,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:43,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937114263] [2020-11-29 20:12:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:43,378 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:43,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924615201] [2020-11-29 20:12:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:43,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:12:43,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:12:43,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937114263] [2020-11-29 20:12:43,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:43,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924615201] [2020-11-29 20:12:43,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:43,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:12:43,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860712479] [2020-11-29 20:12:43,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:12:43,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:43,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:12:43,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:12:43,604 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 6 states. [2020-11-29 20:12:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:43,806 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-11-29 20:12:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:12:43,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-11-29 20:12:43,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:43,808 INFO L225 Difference]: With dead ends: 141 [2020-11-29 20:12:43,808 INFO L226 Difference]: Without dead ends: 104 [2020-11-29 20:12:43,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:12:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-29 20:12:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2020-11-29 20:12:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 20:12:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-11-29 20:12:43,828 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 40 [2020-11-29 20:12:43,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:43,829 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-11-29 20:12:43,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:12:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-11-29 20:12:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 20:12:43,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:43,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:44,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:44,060 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:44,061 INFO L82 PathProgramCache]: Analyzing trace with hash 265910895, now seen corresponding path program 4 times [2020-11-29 20:12:44,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:44,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170010816] [2020-11-29 20:12:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:44,069 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:44,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42760009] [2020-11-29 20:12:44,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/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 20:12:44,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 20:12:44,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:12:44,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-29 20:12:44,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:12:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170010816] [2020-11-29 20:12:44,333 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42760009] [2020-11-29 20:12:44,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:44,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 20:12:44,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009821810] [2020-11-29 20:12:44,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:12:44,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:44,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:12:44,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:12:44,335 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 8 states. [2020-11-29 20:12:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:44,863 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-11-29 20:12:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:12:44,863 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-11-29 20:12:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:44,866 INFO L225 Difference]: With dead ends: 104 [2020-11-29 20:12:44,866 INFO L226 Difference]: Without dead ends: 102 [2020-11-29 20:12:44,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:12:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-29 20:12:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-11-29 20:12:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-29 20:12:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-11-29 20:12:44,885 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 41 [2020-11-29 20:12:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:44,886 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-11-29 20:12:44,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:12:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-11-29 20:12:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 20:12:44,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:44,894 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:45,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 20:12:45,116 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 317576706, now seen corresponding path program 2 times [2020-11-29 20:12:45,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:45,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472432784] [2020-11-29 20:12:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:45,126 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:12:45,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224171759] [2020-11-29 20:12:45,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:45,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 20:12:45,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:12:45,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 20:12:45,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:45,211 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:12:45,211 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:45,258 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:12:45,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:12:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-29 20:12:45,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472432784] [2020-11-29 20:12:45,321 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:12:45,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224171759] [2020-11-29 20:12:45,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:45,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 20:12:45,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863405066] [2020-11-29 20:12:45,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:12:45,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:45,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:12:45,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:12:45,323 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 9 states. [2020-11-29 20:12:45,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:45,665 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-11-29 20:12:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:12:45,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-11-29 20:12:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:45,666 INFO L225 Difference]: With dead ends: 92 [2020-11-29 20:12:45,666 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:12:45,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:12:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:12:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:12:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:12:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:12:45,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-11-29 20:12:45,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:45,668 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:12:45,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:12:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:12:45,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:12:45,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 20:12:45,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:12:46,381 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-11-29 20:12:46,553 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2020-11-29 20:12:46,740 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 34 [2020-11-29 20:12:46,942 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-11-29 20:12:47,199 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 36 [2020-11-29 20:12:47,397 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-11-29 20:12:47,418 INFO L277 CegarLoopResult]: At program point L60(lines 22 61) the Hoare annotation is: true [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:12:47,419 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:12:47,420 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:12:47,420 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:12:47,420 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 (= ULTIMATE.start_main_~p~0 2) .cse1 .cse2 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 (* (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0) 2)) .cse0 .cse1 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse3 2)) .cse2 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 1)))) [2020-11-29 20:12:47,420 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:12:47,420 INFO L270 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 (= ULTIMATE.start_main_~p~0 2) .cse1 .cse2 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 (* (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0) 2)) .cse0 .cse1 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse3 2)) .cse2 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 1)))) [2020-11-29 20:12:47,420 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:12:47,421 INFO L270 CegarLoopResult]: At program point L15-5(line 38) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and (= ULTIMATE.start_main_~B~0 1) .cse0 .cse1 .cse2 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse3 2)) .cse4 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse4))) [2020-11-29 20:12:47,421 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:12:47,421 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse3 (= ULTIMATE.start_main_~B~0 1))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 (= ULTIMATE.start_main_~p~0 2) .cse1 .cse2 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (and .cse3 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) .cse4 .cse5 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (and .cse3 .cse0 .cse4 .cse5 .cse1 .cse2) (and .cse3 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0))))) [2020-11-29 20:12:47,421 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:12:47,421 INFO L270 CegarLoopResult]: At program point L15-9(line 48) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~B~0 1))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 (= ULTIMATE.start_main_~p~0 2) .cse1 .cse2 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (and .cse3 .cse0 .cse4 .cse5 .cse1 .cse2) (and (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) .cse0 .cse4 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) .cse5 (= ULTIMATE.start_main_~d~0 1)) (and .cse3 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0))))) [2020-11-29 20:12:47,421 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:12:47,422 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1)) [2020-11-29 20:12:47,422 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:12:47,422 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-29 20:12:47,422 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:12:47,422 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:12:47,422 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:12:47,422 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:12:47,422 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:12:47,422 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:12:47,422 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:12:47,423 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:12:47,423 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:12:47,423 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:12:47,423 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (= ULTIMATE.start_main_~q~0 0)) (.cse1 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~d~0 1)) (let ((.cse4 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and (= ULTIMATE.start_main_~B~0 1) .cse2 .cse3 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) .cse0 (<= 1 (div .cse4 2)) .cse1 (<= .cse4 ULTIMATE.start_main_~r~0))) (and .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 (= ULTIMATE.start_main_~p~0 2) .cse0 .cse1))) [2020-11-29 20:12:47,423 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:12:47,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:12:47 BoogieIcfgContainer [2020-11-29 20:12:47,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:12:47,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:12:47,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:12:47,454 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:12:47,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:34" (3/4) ... [2020-11-29 20:12:47,458 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:12:47,470 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 20:12:47,471 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:12:47,471 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:12:47,471 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:12:47,520 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ef73b581-46fd-4ba0-9c59-0d3fa451c7bf/bin/uautomizer/witness.graphml [2020-11-29 20:12:47,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:12:47,522 INFO L168 Benchmark]: Toolchain (without parser) took 13804.51 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 43.4 MB in the beginning and 75.5 MB in the end (delta: -32.1 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:47,522 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 59.5 MB in the beginning and 59.5 MB in the end (delta: 81.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:47,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.08 ms. Allocated memory is still 96.5 MB. Free memory was 43.3 MB in the beginning and 74.4 MB in the end (delta: -31.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:47,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.24 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 72.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:47,524 INFO L168 Benchmark]: Boogie Preprocessor took 52.49 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 71.8 MB in the end (delta: 885.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:47,524 INFO L168 Benchmark]: RCFGBuilder took 605.64 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 55.5 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:47,525 INFO L168 Benchmark]: TraceAbstraction took 12708.48 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 55.1 MB in the beginning and 78.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 82.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:47,525 INFO L168 Benchmark]: Witness Printer took 67.54 ms. Allocated memory is still 172.0 MB. Free memory was 78.7 MB in the beginning and 75.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:47,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 59.5 MB in the beginning and 59.5 MB in the end (delta: 81.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.08 ms. Allocated memory is still 96.5 MB. Free memory was 43.3 MB in the beginning and 74.4 MB in the end (delta: -31.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.24 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 72.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.49 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 71.8 MB in the end (delta: 885.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.64 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 55.5 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12708.48 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 55.1 MB in the beginning and 78.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 82.9 MB. Max. memory is 16.1 GB. * Witness Printer took 67.54 ms. Allocated memory is still 172.0 MB. Free memory was 78.7 MB in the beginning and 75.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * B) && 1 == cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1)) || (((((d == p * B && d == 2) && 1 == cond) && p == 2) && q == 0) && A == r) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((B == d && p == 1) && q == 0) && A == r) && d == 1) || (((((((B == 1 && d == p * B) && 1 == cond) && p % -2 == 0) && q == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r)) || (((((d == p * B && d == 2) && 1 == cond) && p == 2) && q == 0) && A == r) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((d == 2 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((B == 1 && 1 <= cond) && B == d) && p == 1) && q == 0) && A == r)) || (((((A == d + r && 1 <= cond) && B == d) && q == p) && p == 1) && d == 1)) || (((B == 1 && d == p * B) && 1 == cond) && A == q + r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((d == 2 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((((B == 1 && d == p * -1 / -2 * B * 2) && 1 <= cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r)) || (((((1 <= cond && B == d) && p == 1) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((d == 2 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((B == 1 && !(0 == cond)) && A == d + r) && B == d) && p == 1) && q == p)) || (((((B == 1 && 1 <= cond) && B == d) && p == 1) && q == 0) && A == r)) || (((B == 1 && d == p * B) && 1 == cond) && A == q + r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((d == 2 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((((B == 1 && d == p * -1 / -2 * B * 2) && 1 <= cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r)) || (((((1 <= cond && B == d) && p == 1) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && !(0 == cond)) && B == d) && p == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.0s, OverallIterations: 15, TraceHistogramMax: 4, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 354 SDtfs, 459 SDslu, 775 SDs, 0 SdLazy, 1713 SolverSat, 261 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 396 GetRequests, 294 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=8, 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, 15 MinimizatonAttempts, 148 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 54 NumberOfFragments, 506 HoareAnnotationTreeSize, 9 FomulaSimplifications, 9176 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1057 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 382 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 367 ConstructedInterpolants, 2 QuantifiedInterpolants, 124641 SizeOfPredicates, 81 NumberOfNonLiveVariables, 1295 ConjunctsInSsa, 231 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 100/251 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...