./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.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_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/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 91f380cc586fc37a21f02c3c45ccd402d5300ed9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:16:44,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:16:44,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:16:44,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:16:44,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:16:44,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:16:44,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:16:44,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:16:44,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:16:44,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:16:44,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:16:44,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:16:44,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:16:44,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:16:44,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:16:44,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:16:44,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:16:44,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:16:44,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:16:44,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:16:44,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:16:44,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:16:44,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:16:44,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:16:44,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:16:44,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:16:44,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:16:44,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:16:44,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:16:44,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:16:44,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:16:44,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:16:44,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:16:44,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:16:44,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:16:44,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:16:44,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:16:44,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:16:44,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:16:44,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:16:44,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:16:44,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:16:44,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:16:44,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:16:44,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:16:44,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:16:44,488 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:16:44,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:16:44,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:16:44,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:16:44,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:16:44,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:16:44,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:16:44,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:16:44,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:16:44,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:16:44,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:16:44,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:16:44,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:16:44,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:16:44,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:16:44,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:16:44,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:16:44,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:16:44,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:16:44,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:16:44,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:16:44,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:16:44,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:16:44,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:16:44,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:16:44,494 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_5093db57-ef90-4b87-b795-95e883a84803/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f380cc586fc37a21f02c3c45ccd402d5300ed9 [2020-11-29 23:16:44,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:16:44,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:16:44,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:16:44,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:16:44,769 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:16:44,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2020-11-29 23:16:44,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/data/016930205/78b739b245b74b6da1d5caeb218e9191/FLAG406c06c90 [2020-11-29 23:16:45,340 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:16:45,340 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2020-11-29 23:16:45,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/data/016930205/78b739b245b74b6da1d5caeb218e9191/FLAG406c06c90 [2020-11-29 23:16:45,722 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/data/016930205/78b739b245b74b6da1d5caeb218e9191 [2020-11-29 23:16:45,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:16:45,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:16:45,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:16:45,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:16:45,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:16:45,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:16:45" (1/1) ... [2020-11-29 23:16:45,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf5fdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:45, skipping insertion in model container [2020-11-29 23:16:45,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:16:45" (1/1) ... [2020-11-29 23:16:45,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:16:45,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:16:45,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:16:45,977 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:16:46,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:16:46,032 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:16:46,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46 WrapperNode [2020-11-29 23:16:46,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:16:46,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:16:46,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:16:46,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:16:46,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:16:46,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:16:46,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:16:46,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:16:46,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... [2020-11-29 23:16:46,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:16:46,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:16:46,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:16:46,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:16:46,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/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 23:16:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:16:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:16:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:16:46,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:16:46,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:16:46,478 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-29 23:16:46,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:16:46 BoogieIcfgContainer [2020-11-29 23:16:46,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:16:46,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:16:46,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:16:46,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:16:46,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:16:45" (1/3) ... [2020-11-29 23:16:46,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb724ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:16:46, skipping insertion in model container [2020-11-29 23:16:46,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:16:46" (2/3) ... [2020-11-29 23:16:46,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb724ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:16:46, skipping insertion in model container [2020-11-29 23:16:46,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:16:46" (3/3) ... [2020-11-29 23:16:46,502 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound1.c [2020-11-29 23:16:46,513 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:16:46,516 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 23:16:46,527 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 23:16:46,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:16:46,548 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:16:46,548 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:16:46,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:16:46,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:16:46,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:16:46,549 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:16:46,549 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:16:46,562 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-29 23:16:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:16:46,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:46,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:46,568 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:46,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:46,574 INFO L82 PathProgramCache]: Analyzing trace with hash 120151435, now seen corresponding path program 1 times [2020-11-29 23:16:46,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:46,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368528281] [2020-11-29 23:16:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:46,705 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 23:16:46,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368528281] [2020-11-29 23:16:46,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:16:46,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:16:46,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878414602] [2020-11-29 23:16:46,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:16:46,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:46,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:16:46,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:16:46,730 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-29 23:16:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:16:46,755 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-29 23:16:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:16:46,757 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 23:16:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:16:46,765 INFO L225 Difference]: With dead ends: 41 [2020-11-29 23:16:46,765 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 23:16:46,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:16:46,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 23:16:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 23:16:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 23:16:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-29 23:16:46,818 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-11-29 23:16:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:16:46,819 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-29 23:16:46,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:16:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-29 23:16:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:16:46,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:46,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:46,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:16:46,821 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:46,825 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-29 23:16:46,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:46,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815807981] [2020-11-29 23:16:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:46,852 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:16:46,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420841214] [2020-11-29 23:16:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/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 23:16:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:46,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:16:46,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:16:47,040 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 23:16:47,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815807981] [2020-11-29 23:16:47,040 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:16:47,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420841214] [2020-11-29 23:16:47,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:16:47,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:16:47,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170793695] [2020-11-29 23:16:47,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:16:47,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:47,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:16:47,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:16:47,044 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-11-29 23:16:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:16:47,347 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-11-29 23:16:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:16:47,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 23:16:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:16:47,349 INFO L225 Difference]: With dead ends: 36 [2020-11-29 23:16:47,349 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 23:16:47,350 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 23:16:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 23:16:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-11-29 23:16:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 23:16:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-29 23:16:47,355 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2020-11-29 23:16:47,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:16:47,356 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-29 23:16:47,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:16:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-29 23:16:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:16:47,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:47,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:47,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 23:16:47,577 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:47,577 INFO L82 PathProgramCache]: Analyzing trace with hash -908536776, now seen corresponding path program 1 times [2020-11-29 23:16:47,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:47,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304473074] [2020-11-29 23:16:47,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:47,594 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:16:47,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033883866] [2020-11-29 23:16:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/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 23:16:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:47,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:16:47,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:16:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:16:47,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304473074] [2020-11-29 23:16:47,715 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:16:47,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033883866] [2020-11-29 23:16:47,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:16:47,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 23:16:47,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257838629] [2020-11-29 23:16:47,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:16:47,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:47,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:16:47,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:16:47,717 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2020-11-29 23:16:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:16:47,756 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-11-29 23:16:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:16:47,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 23:16:47,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:16:47,758 INFO L225 Difference]: With dead ends: 32 [2020-11-29 23:16:47,758 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 23:16:47,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:16:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 23:16:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 23:16:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 23:16:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-29 23:16:47,762 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 12 [2020-11-29 23:16:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:16:47,762 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-29 23:16:47,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:16:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-29 23:16:47,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:16:47,763 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:47,763 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:47,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:16:47,980 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:47,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:47,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1900088373, now seen corresponding path program 1 times [2020-11-29 23:16:47,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:47,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955697307] [2020-11-29 23:16:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:48,004 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:16:48,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019106841] [2020-11-29 23:16:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/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 23:16:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:48,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:16:48,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:16:48,153 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 23:16:48,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955697307] [2020-11-29 23:16:48,153 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:16:48,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019106841] [2020-11-29 23:16:48,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:16:48,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:16:48,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781966320] [2020-11-29 23:16:48,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:16:48,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:48,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:16:48,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:16:48,155 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 5 states. [2020-11-29 23:16:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:16:48,252 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-29 23:16:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:16:48,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 23:16:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:16:48,254 INFO L225 Difference]: With dead ends: 18 [2020-11-29 23:16:48,254 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 23:16:48,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 23:16:48,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 23:16:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 23:16:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 23:16:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-29 23:16:48,258 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 13 [2020-11-29 23:16:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:16:48,258 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-29 23:16:48,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:16:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-29 23:16:48,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:16:48,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:48,259 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:48,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:16:48,481 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:48,481 INFO L82 PathProgramCache]: Analyzing trace with hash 624012856, now seen corresponding path program 1 times [2020-11-29 23:16:48,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:48,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693029194] [2020-11-29 23:16:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:48,496 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:16:48,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608747433] [2020-11-29 23:16:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/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 23:16:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:16:48,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:16:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:16:48,568 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:16:48,602 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:16:48,602 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:16:48,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:16:48,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:16:48 BoogieIcfgContainer [2020-11-29 23:16:48,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:16:48,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:16:48,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:16:48,832 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:16:48,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:16:46" (3/4) ... [2020-11-29 23:16:48,835 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:16:48,879 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5093db57-ef90-4b87-b795-95e883a84803/bin/uautomizer/witness.graphml [2020-11-29 23:16:48,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:16:48,882 INFO L168 Benchmark]: Toolchain (without parser) took 3155.25 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 78.7 MB in the beginning and 86.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:16:48,882 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:16:48,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.27 ms. Allocated memory is still 107.0 MB. Free memory was 78.5 MB in the beginning and 81.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:16:48,884 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.74 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 80.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:16:48,884 INFO L168 Benchmark]: Boogie Preprocessor took 21.06 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 79.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:16:48,885 INFO L168 Benchmark]: RCFGBuilder took 390.80 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 66.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:16:48,886 INFO L168 Benchmark]: TraceAbstraction took 2338.63 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 65.6 MB in the beginning and 90.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:16:48,886 INFO L168 Benchmark]: Witness Printer took 48.02 ms. Allocated memory is still 134.2 MB. Free memory was 90.0 MB in the beginning and 86.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:16:48,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.27 ms. Allocated memory is still 107.0 MB. Free memory was 78.5 MB in the beginning and 81.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.74 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 80.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.06 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 79.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 390.80 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 66.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2338.63 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 65.6 MB in the beginning and 90.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. * Witness Printer took 48.02 ms. Allocated memory is still 134.2 MB. Free memory was 90.0 MB in the beginning and 86.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) VAL [counter=0] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND FALSE !(counter++<1) [L10] COND FALSE !(!(cond)) VAL [counter=2] [L10] COND TRUE !(cond) VAL [counter=2] [L3] __assert_fail("0", "ps6-ll.c", 3, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 28 SDslu, 54 SDs, 0 SdLazy, 45 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1367 SizeOfPredicates, 9 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/5 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...