./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.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_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/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 ae3408cd4ee618a2b4029fb36ac233f268b706d6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:34:56,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:34:56,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:34:56,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:34:56,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:34:56,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:34:56,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:34:56,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:34:56,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:34:56,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:34:56,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:34:56,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:34:56,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:34:56,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:34:56,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:34:56,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:34:56,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:34:56,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:34:56,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:34:56,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:34:56,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:34:56,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:34:56,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:34:56,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:34:56,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:34:56,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:34:56,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:34:56,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:34:56,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:34:56,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:34:56,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:34:56,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:34:56,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:34:56,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:34:56,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:34:56,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:34:56,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:34:56,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:34:56,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:34:56,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:34:56,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:34:56,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:34:56,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:34:56,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:34:56,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:34:56,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:34:56,770 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:34:56,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:34:56,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:34:56,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:34:56,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:34:56,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:34:56,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:34:56,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:34:56,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:34:56,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:34:56,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:34:56,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:34:56,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:34:56,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:34:56,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:34:56,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:34:56,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:34:56,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:34:56,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:34:56,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:34:56,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:34:56,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:34:56,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:34:56,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:34:56,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:34:56,781 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_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae3408cd4ee618a2b4029fb36ac233f268b706d6 [2020-11-29 22:34:57,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:34:57,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:34:57,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:34:57,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:34:57,157 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:34:57,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2020-11-29 22:34:57,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/data/097eac3b8/2b1eee9b6bdb4d29aeb57035dd5eb423/FLAGfa67306c4 [2020-11-29 22:34:57,759 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:34:57,759 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2020-11-29 22:34:57,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/data/097eac3b8/2b1eee9b6bdb4d29aeb57035dd5eb423/FLAGfa67306c4 [2020-11-29 22:34:58,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/data/097eac3b8/2b1eee9b6bdb4d29aeb57035dd5eb423 [2020-11-29 22:34:58,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:34:58,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:34:58,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:34:58,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:34:58,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:34:58,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ed4b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58, skipping insertion in model container [2020-11-29 22:34:58,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:34:58,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:34:58,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:34:58,361 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:34:58,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:34:58,395 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:34:58,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58 WrapperNode [2020-11-29 22:34:58,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:34:58,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:34:58,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:34:58,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:34:58,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:34:58,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:34:58,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:34:58,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:34:58,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... [2020-11-29 22:34:58,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:34:58,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:34:58,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:34:58,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:34:58,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:34:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:34:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:34:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:34:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:34:58,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:34:58,913 INFO L298 CfgBuilder]: Removed 49 assume(true) statements. [2020-11-29 22:34:58,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:34:58 BoogieIcfgContainer [2020-11-29 22:34:58,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:34:58,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:34:58,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:34:58,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:34:58,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:34:58" (1/3) ... [2020-11-29 22:34:58,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395532a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:34:58, skipping insertion in model container [2020-11-29 22:34:58,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:58" (2/3) ... [2020-11-29 22:34:58,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395532a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:34:58, skipping insertion in model container [2020-11-29 22:34:58,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:34:58" (3/3) ... [2020-11-29 22:34:58,946 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound2.c [2020-11-29 22:34:58,965 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:34:58,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-29 22:34:58,987 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-29 22:34:59,011 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:34:59,011 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:34:59,011 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:34:59,012 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:34:59,012 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:34:59,012 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:34:59,012 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:34:59,012 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:34:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-29 22:34:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 22:34:59,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:34:59,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:34:59,038 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:34:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:34:59,044 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 22:34:59,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:34:59,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112945869] [2020-11-29 22:34:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:34:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:59,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112945869] [2020-11-29 22:34:59,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:34:59,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:34:59,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745409822] [2020-11-29 22:34:59,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:34:59,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:34:59,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:34:59,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:34:59,295 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-11-29 22:34:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:34:59,554 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-11-29 22:34:59,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:34:59,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 22:34:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:34:59,566 INFO L225 Difference]: With dead ends: 101 [2020-11-29 22:34:59,566 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 22:34:59,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:34:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 22:34:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-11-29 22:34:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 22:34:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-29 22:34:59,609 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2020-11-29 22:34:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:34:59,610 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-29 22:34:59,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:34:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-29 22:34:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:34:59,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:34:59,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:34:59,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:34:59,612 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:34:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:34:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 22:34:59,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:34:59,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048546] [2020-11-29 22:34:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:34:59,630 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:34:59,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151118631] [2020-11-29 22:34:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:34:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:59,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:34:59,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:34:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:59,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048546] [2020-11-29 22:34:59,815 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:34:59,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151118631] [2020-11-29 22:34:59,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:34:59,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:34:59,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460344907] [2020-11-29 22:34:59,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:34:59,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:34:59,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:34:59,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:34:59,819 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 4 states. [2020-11-29 22:35:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:00,017 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-11-29 22:35:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:35:00,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 22:35:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:00,020 INFO L225 Difference]: With dead ends: 86 [2020-11-29 22:35:00,020 INFO L226 Difference]: Without dead ends: 84 [2020-11-29 22:35:00,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:35:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-29 22:35:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2020-11-29 22:35:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 22:35:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-11-29 22:35:00,042 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2020-11-29 22:35:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:00,043 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-11-29 22:35:00,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:35:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-11-29 22:35:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:35:00,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:00,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:00,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 22:35:00,259 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1274614383, now seen corresponding path program 1 times [2020-11-29 22:35:00,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:00,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797123477] [2020-11-29 22:35:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:00,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797123477] [2020-11-29 22:35:00,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:35:00,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:35:00,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770924711] [2020-11-29 22:35:00,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:35:00,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:00,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:35:00,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:35:00,315 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 4 states. [2020-11-29 22:35:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:00,360 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-11-29 22:35:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:35:00,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 22:35:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:00,364 INFO L225 Difference]: With dead ends: 71 [2020-11-29 22:35:00,364 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 22:35:00,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:35:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 22:35:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-29 22:35:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 22:35:00,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-11-29 22:35:00,391 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2020-11-29 22:35:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:00,392 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-11-29 22:35:00,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:35:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-11-29 22:35:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:35:00,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:00,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:00,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:35:00,394 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 22:35:00,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:00,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690979036] [2020-11-29 22:35:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:00,428 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:00,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030150947] [2020-11-29 22:35:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:00,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:35:00,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:00,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690979036] [2020-11-29 22:35:00,516 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:00,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030150947] [2020-11-29 22:35:00,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:35:00,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:35:00,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440739594] [2020-11-29 22:35:00,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:35:00,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:35:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:35:00,519 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 4 states. [2020-11-29 22:35:00,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:00,659 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-11-29 22:35:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:35:00,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 22:35:00,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:00,661 INFO L225 Difference]: With dead ends: 84 [2020-11-29 22:35:00,661 INFO L226 Difference]: Without dead ends: 80 [2020-11-29 22:35:00,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:35:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-29 22:35:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-11-29 22:35:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 22:35:00,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-11-29 22:35:00,674 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2020-11-29 22:35:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:00,675 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-11-29 22:35:00,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:35:00,675 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-11-29 22:35:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:35:00,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:00,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:00,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:00,899 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:00,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:00,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1861377587, now seen corresponding path program 1 times [2020-11-29 22:35:00,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:00,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896377997] [2020-11-29 22:35:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:00,916 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:00,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772588274] [2020-11-29 22:35:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:00,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:35:00,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:01,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896377997] [2020-11-29 22:35:01,005 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:01,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772588274] [2020-11-29 22:35:01,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:35:01,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:35:01,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311126382] [2020-11-29 22:35:01,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:35:01,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:01,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:35:01,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:35:01,006 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states. [2020-11-29 22:35:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:01,185 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-11-29 22:35:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:35:01,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:35:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:01,187 INFO L225 Difference]: With dead ends: 83 [2020-11-29 22:35:01,187 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 22:35:01,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:35:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 22:35:01,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-11-29 22:35:01,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 22:35:01,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-11-29 22:35:01,204 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2020-11-29 22:35:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:01,204 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-11-29 22:35:01,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:35:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-11-29 22:35:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:35:01,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:01,205 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:01,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:01,430 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1885484539, now seen corresponding path program 1 times [2020-11-29 22:35:01,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:01,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175429853] [2020-11-29 22:35:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:01,450 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:01,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237308309] [2020-11-29 22:35:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:01,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:35:01,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:01,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175429853] [2020-11-29 22:35:01,572 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:01,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237308309] [2020-11-29 22:35:01,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:35:01,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 22:35:01,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248413820] [2020-11-29 22:35:01,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:35:01,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:35:01,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:35:01,575 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 5 states. [2020-11-29 22:35:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:01,781 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2020-11-29 22:35:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:35:01,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 22:35:01,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:01,784 INFO L225 Difference]: With dead ends: 99 [2020-11-29 22:35:01,784 INFO L226 Difference]: Without dead ends: 97 [2020-11-29 22:35:01,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 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 22:35:01,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-29 22:35:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2020-11-29 22:35:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 22:35:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-11-29 22:35:01,795 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 20 [2020-11-29 22:35:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:01,796 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-11-29 22:35:01,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:35:01,796 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-11-29 22:35:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:35:01,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:01,800 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:02,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:02,001 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:02,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:02,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1678751895, now seen corresponding path program 1 times [2020-11-29 22:35:02,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:02,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259986038] [2020-11-29 22:35:02,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:02,023 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:02,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868180745] [2020-11-29 22:35:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:02,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:35:02,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:02,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259986038] [2020-11-29 22:35:02,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:02,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868180745] [2020-11-29 22:35:02,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:35:02,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 22:35:02,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827393662] [2020-11-29 22:35:02,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:35:02,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:02,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:35:02,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:35:02,131 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 5 states. [2020-11-29 22:35:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:02,174 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-11-29 22:35:02,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:35:02,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-29 22:35:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:02,175 INFO L225 Difference]: With dead ends: 83 [2020-11-29 22:35:02,175 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 22:35:02,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:35:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 22:35:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-29 22:35:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 22:35:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-11-29 22:35:02,191 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 21 [2020-11-29 22:35:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:02,192 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-11-29 22:35:02,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:35:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-11-29 22:35:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:35:02,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:02,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:02,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 22:35:02,416 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:02,416 INFO L82 PathProgramCache]: Analyzing trace with hash 525743656, now seen corresponding path program 1 times [2020-11-29 22:35:02,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:02,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888134895] [2020-11-29 22:35:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:02,427 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:02,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523524329] [2020-11-29 22:35:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:02,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:35:02,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:02,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888134895] [2020-11-29 22:35:02,559 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:02,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523524329] [2020-11-29 22:35:02,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:35:02,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 22:35:02,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770554925] [2020-11-29 22:35:02,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:35:02,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:02,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:35:02,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:35:02,561 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 5 states. [2020-11-29 22:35:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:02,748 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2020-11-29 22:35:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:35:02,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-29 22:35:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:02,750 INFO L225 Difference]: With dead ends: 96 [2020-11-29 22:35:02,750 INFO L226 Difference]: Without dead ends: 94 [2020-11-29 22:35:02,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 22:35:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-29 22:35:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63. [2020-11-29 22:35:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 22:35:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-11-29 22:35:02,772 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 22 [2020-11-29 22:35:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:02,773 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-11-29 22:35:02,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:35:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-11-29 22:35:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:35:02,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:02,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:02,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:02,996 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:02,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:02,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1566300405, now seen corresponding path program 1 times [2020-11-29 22:35:02,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:02,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58742925] [2020-11-29 22:35:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:03,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:03,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339048156] [2020-11-29 22:35:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:03,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 22:35:03,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:03,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58742925] [2020-11-29 22:35:03,121 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:03,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339048156] [2020-11-29 22:35:03,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:35:03,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 22:35:03,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898463695] [2020-11-29 22:35:03,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:35:03,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:03,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:35:03,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:35:03,123 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 5 states. [2020-11-29 22:35:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:03,366 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2020-11-29 22:35:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:35:03,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-29 22:35:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:03,367 INFO L225 Difference]: With dead ends: 97 [2020-11-29 22:35:03,367 INFO L226 Difference]: Without dead ends: 81 [2020-11-29 22:35:03,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 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 22:35:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-29 22:35:03,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-11-29 22:35:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 22:35:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-11-29 22:35:03,379 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 24 [2020-11-29 22:35:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:03,379 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-11-29 22:35:03,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:35:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-11-29 22:35:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:35:03,381 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:03,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:03,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:03,600 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1224244284, now seen corresponding path program 1 times [2020-11-29 22:35:03,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:03,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973981428] [2020-11-29 22:35:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:03,610 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:03,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798426259] [2020-11-29 22:35:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:03,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 22:35:03,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:03,840 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-11-29 22:35:04,027 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:35:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:04,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973981428] [2020-11-29 22:35:04,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:04,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798426259] [2020-11-29 22:35:04,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:35:04,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 22:35:04,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546008928] [2020-11-29 22:35:04,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:35:04,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:04,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:35:04,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:35:04,084 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 6 states. [2020-11-29 22:35:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:04,518 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2020-11-29 22:35:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:35:04,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-29 22:35:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:04,520 INFO L225 Difference]: With dead ends: 78 [2020-11-29 22:35:04,520 INFO L226 Difference]: Without dead ends: 76 [2020-11-29 22:35:04,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:35:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-29 22:35:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-11-29 22:35:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 22:35:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-11-29 22:35:04,534 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 31 [2020-11-29 22:35:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:04,534 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-11-29 22:35:04,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:35:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-11-29 22:35:04,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:35:04,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:04,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 22:35:04,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 22:35:04,742 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:04,742 INFO L82 PathProgramCache]: Analyzing trace with hash 314915549, now seen corresponding path program 2 times [2020-11-29 22:35:04,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:04,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030069314] [2020-11-29 22:35:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:04,755 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:04,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358551563] [2020-11-29 22:35:04,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:04,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:35:04,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:35:04,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:35:04,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:04,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030069314] [2020-11-29 22:35:04,881 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:04,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358551563] [2020-11-29 22:35:04,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:35:04,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 22:35:04,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227657395] [2020-11-29 22:35:04,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:35:04,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:04,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:35:04,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:35:04,883 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 6 states. [2020-11-29 22:35:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:04,926 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2020-11-29 22:35:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:35:04,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-29 22:35:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:04,927 INFO L225 Difference]: With dead ends: 98 [2020-11-29 22:35:04,927 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 22:35:04,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:35:04,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 22:35:04,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 22:35:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 22:35:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-11-29 22:35:04,937 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 32 [2020-11-29 22:35:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:04,937 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-11-29 22:35:04,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:35:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-11-29 22:35:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:35:04,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:04,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:05,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:05,139 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:05,139 INFO L82 PathProgramCache]: Analyzing trace with hash 322471079, now seen corresponding path program 1 times [2020-11-29 22:35:05,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:05,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486602189] [2020-11-29 22:35:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:05,148 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:05,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880065432] [2020-11-29 22:35:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:05,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 22:35:05,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:35:05,319 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:35:05,322 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:35:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:05,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486602189] [2020-11-29 22:35:05,378 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:35:05,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880065432] [2020-11-29 22:35:05,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:35:05,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 22:35:05,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840967457] [2020-11-29 22:35:05,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:35:05,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:35:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:35:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:35:05,380 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 6 states. [2020-11-29 22:35:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:35:05,649 INFO L93 Difference]: Finished difference Result 58 states and 57 transitions. [2020-11-29 22:35:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:35:05,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-11-29 22:35:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:35:05,650 INFO L225 Difference]: With dead ends: 58 [2020-11-29 22:35:05,650 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 22:35:05,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:35:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 22:35:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 22:35:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 22:35:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2020-11-29 22:35:05,659 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 33 [2020-11-29 22:35:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:35:05,664 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2020-11-29 22:35:05,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:35:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2020-11-29 22:35:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:35:05,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:35:05,668 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:35:05,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:05,869 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:35:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:35:05,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1171677887, now seen corresponding path program 2 times [2020-11-29 22:35:05,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:35:05,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884813349] [2020-11-29 22:35:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:35:05,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:35:05,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079058931] [2020-11-29 22:35:05,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:35:05,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:35:05,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-29 22:35:05,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:35:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:35:05,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:35:06,036 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:35:06,036 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:35:06,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 22:35:06,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:35:06 BoogieIcfgContainer [2020-11-29 22:35:06,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:35:06,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:35:06,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:35:06,312 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:35:06,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:34:58" (3/4) ... [2020-11-29 22:35:06,315 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:35:06,363 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e5b79309-21d0-4b2b-b4a1-9fd9d92bd1a4/bin/uautomizer/witness.graphml [2020-11-29 22:35:06,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:35:06,365 INFO L168 Benchmark]: Toolchain (without parser) took 8260.15 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 81.7 MB in the beginning and 113.8 MB in the end (delta: -32.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:35:06,365 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory was 87.9 MB in the beginning and 87.8 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:35:06,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.99 ms. Allocated memory is still 117.4 MB. Free memory was 81.7 MB in the beginning and 92.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:35:06,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.07 ms. Allocated memory is still 117.4 MB. Free memory was 92.0 MB in the beginning and 90.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:35:06,367 INFO L168 Benchmark]: Boogie Preprocessor took 27.35 ms. Allocated memory is still 117.4 MB. Free memory was 90.0 MB in the beginning and 89.2 MB in the end (delta: 786.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:35:06,367 INFO L168 Benchmark]: RCFGBuilder took 452.54 ms. Allocated memory is still 117.4 MB. Free memory was 89.2 MB in the beginning and 71.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:35:06,368 INFO L168 Benchmark]: TraceAbstraction took 7377.46 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 71.1 MB in the beginning and 117.0 MB in the end (delta: -45.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:35:06,368 INFO L168 Benchmark]: Witness Printer took 51.68 ms. Allocated memory is still 161.5 MB. Free memory was 117.0 MB in the beginning and 113.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:35:06,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory was 87.9 MB in the beginning and 87.8 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.99 ms. Allocated memory is still 117.4 MB. Free memory was 81.7 MB in the beginning and 92.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.07 ms. Allocated memory is still 117.4 MB. Free memory was 92.0 MB in the beginning and 90.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.35 ms. Allocated memory is still 117.4 MB. Free memory was 90.0 MB in the beginning and 89.2 MB in the end (delta: 786.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 452.54 ms. Allocated memory is still 117.4 MB. Free memory was 89.2 MB in the beginning and 71.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7377.46 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 71.1 MB in the beginning and 117.0 MB in the end (delta: -45.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Witness Printer took 51.68 ms. Allocated memory is still 161.5 MB. Free memory was 117.0 MB in the beginning and 113.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L8] __assert_fail("0", "cohencu-ll.c", 8, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.2s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 434 SDtfs, 338 SDslu, 785 SDs, 0 SdLazy, 724 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 137 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 64613 SizeOfPredicates, 41 NumberOfNonLiveVariables, 999 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 20/69 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 incorrect! Received shutdown request...