./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-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_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/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 e8dca45da3558d3dd2c7a13c991bbb3b579db8dd ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:45:49,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:45:49,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:45:49,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:45:49,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:45:49,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:45:49,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:45:49,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:45:49,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:45:49,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:45:49,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:45:49,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:45:49,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:45:49,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:45:49,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:45:49,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:45:49,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:45:49,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:45:49,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:45:49,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:45:49,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:45:49,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:45:49,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:45:49,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:45:49,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:45:49,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:45:49,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:45:49,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:45:49,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:45:49,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:45:49,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:45:49,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:45:49,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:45:49,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:45:49,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:45:49,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:45:49,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:45:49,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:45:49,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:45:49,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:45:49,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:45:49,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:45:50,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:45:50,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:45:50,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:45:50,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:45:50,033 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:45:50,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:45:50,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:45:50,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:45:50,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:45:50,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:45:50,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:45:50,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:45:50,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:45:50,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:45:50,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:45:50,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:45:50,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:45:50,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:45:50,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:45:50,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:45:50,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:45:50,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:45:50,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:45:50,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:45:50,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:45:50,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:45:50,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:45:50,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:45:50,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:45:50,041 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_fdb408b0-edcf-46df-93d1-036987604132/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8dca45da3558d3dd2c7a13c991bbb3b579db8dd [2020-11-29 18:45:50,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:45:50,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:45:50,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:45:50,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:45:50,345 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:45:50,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2020-11-29 18:45:50,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/data/8cc239565/99ac9147f2b241759f8373fa5c4ee732/FLAGdd189e125 [2020-11-29 18:45:50,850 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:45:50,851 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2020-11-29 18:45:50,863 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/data/8cc239565/99ac9147f2b241759f8373fa5c4ee732/FLAGdd189e125 [2020-11-29 18:45:51,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/data/8cc239565/99ac9147f2b241759f8373fa5c4ee732 [2020-11-29 18:45:51,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:45:51,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:45:51,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:45:51,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:45:51,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:45:51,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d94ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51, skipping insertion in model container [2020-11-29 18:45:51,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:45:51,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:45:51,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:45:51,573 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:45:51,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:45:51,634 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:45:51,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51 WrapperNode [2020-11-29 18:45:51,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:45:51,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:45:51,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:45:51,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:45:51,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:45:51,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:45:51,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:45:51,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:45:51,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... [2020-11-29 18:45:51,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:45:51,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:45:51,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:45:51,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:45:51,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/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 18:45:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:45:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:45:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:45:51,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:45:52,287 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:45:52,287 INFO L298 CfgBuilder]: Removed 49 assume(true) statements. [2020-11-29 18:45:52,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:45:52 BoogieIcfgContainer [2020-11-29 18:45:52,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:45:52,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:45:52,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:45:52,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:45:52,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:45:51" (1/3) ... [2020-11-29 18:45:52,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50687d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:45:52, skipping insertion in model container [2020-11-29 18:45:52,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:45:51" (2/3) ... [2020-11-29 18:45:52,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50687d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:45:52, skipping insertion in model container [2020-11-29 18:45:52,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:45:52" (3/3) ... [2020-11-29 18:45:52,299 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound1.c [2020-11-29 18:45:52,316 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:45:52,320 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-29 18:45:52,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-29 18:45:52,358 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:45:52,358 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:45:52,358 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:45:52,358 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:45:52,358 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:45:52,358 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:45:52,359 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:45:52,359 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:45:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-29 18:45:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 18:45:52,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:45:52,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:45:52,388 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 18:45:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:45:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 18:45:52,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:45:52,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493093100] [2020-11-29 18:45:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:45:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:45:52,672 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 18:45:52,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493093100] [2020-11-29 18:45:52,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:45:52,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:45:52,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704222068] [2020-11-29 18:45:52,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:45:52,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:45:52,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:45:52,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:45:52,705 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-11-29 18:45:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:45:54,992 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-11-29 18:45:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:45:54,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 18:45:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:45:55,005 INFO L225 Difference]: With dead ends: 101 [2020-11-29 18:45:55,009 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 18:45:55,016 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 18:45:55,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 18:45:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-11-29 18:45:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 18:45:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-29 18:45:55,065 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2020-11-29 18:45:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:45:55,065 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-29 18:45:55,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:45:55,066 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-29 18:45:55,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:45:55,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:45:55,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:45:55,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:45:55,070 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 18:45:55,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:45:55,073 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 18:45:55,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:45:55,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59901685] [2020-11-29 18:45:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:45:55,095 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:45:55,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714775326] [2020-11-29 18:45:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/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 18:45:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:45:55,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:45:55,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:45:55,252 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 18:45:55,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59901685] [2020-11-29 18:45:55,253 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:45:55,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714775326] [2020-11-29 18:45:55,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:45:55,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:45:55,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741783601] [2020-11-29 18:45:55,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:45:55,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:45:55,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:45:55,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:45:55,256 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 4 states. [2020-11-29 18:45:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:45:55,441 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-11-29 18:45:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:45:55,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 18:45:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:45:55,445 INFO L225 Difference]: With dead ends: 86 [2020-11-29 18:45:55,445 INFO L226 Difference]: Without dead ends: 84 [2020-11-29 18:45:55,446 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 18:45:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-29 18:45:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2020-11-29 18:45:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 18:45:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-11-29 18:45:55,463 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2020-11-29 18:45:55,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:45:55,464 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-11-29 18:45:55,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:45:55,464 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-11-29 18:45:55,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 18:45:55,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:45:55,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:45:55,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 18:45:55,680 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 18:45:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:45:55,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1274614383, now seen corresponding path program 1 times [2020-11-29 18:45:55,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:45:55,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331827377] [2020-11-29 18:45:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:45:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:45:55,734 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 18:45:55,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331827377] [2020-11-29 18:45:55,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:45:55,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:45:55,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518435143] [2020-11-29 18:45:55,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:45:55,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:45:55,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:45:55,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:45:55,737 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 4 states. [2020-11-29 18:45:55,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:45:55,775 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-11-29 18:45:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:45:55,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 18:45:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:45:55,780 INFO L225 Difference]: With dead ends: 71 [2020-11-29 18:45:55,781 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 18:45:55,781 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 18:45:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 18:45:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-29 18:45:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 18:45:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-11-29 18:45:55,791 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2020-11-29 18:45:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:45:55,791 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-11-29 18:45:55,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:45:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-11-29 18:45:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:45:55,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:45:55,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:45:55,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:45:55,793 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 18:45:55,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:45:55,794 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 18:45:55,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:45:55,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537564265] [2020-11-29 18:45:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:45:55,807 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:45:55,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384095365] [2020-11-29 18:45:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/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 18:45:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:45:55,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:45:55,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:45:55,889 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 18:45:55,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537564265] [2020-11-29 18:45:55,889 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:45:55,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384095365] [2020-11-29 18:45:55,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:45:55,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:45:55,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199965924] [2020-11-29 18:45:55,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:45:55,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:45:55,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:45:55,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:45:55,892 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 4 states. [2020-11-29 18:45:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:45:56,054 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-11-29 18:45:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:45:56,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 18:45:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:45:56,056 INFO L225 Difference]: With dead ends: 84 [2020-11-29 18:45:56,056 INFO L226 Difference]: Without dead ends: 80 [2020-11-29 18:45:56,057 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 18:45:56,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-29 18:45:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-11-29 18:45:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 18:45:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-11-29 18:45:56,069 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2020-11-29 18:45:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:45:56,070 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-11-29 18:45:56,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:45:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-11-29 18:45:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 18:45:56,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:45:56,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:45:56,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:45:56,284 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 18:45:56,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:45:56,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1861377587, now seen corresponding path program 1 times [2020-11-29 18:45:56,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:45:56,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723160877] [2020-11-29 18:45:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:45:56,299 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:45:56,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840569987] [2020-11-29 18:45:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/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 18:45:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:45:56,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 18:45:56,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:45:56,512 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-29 18:45:56,535 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 18:45:56,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723160877] [2020-11-29 18:45:56,535 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:45:56,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840569987] [2020-11-29 18:45:56,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:45:56,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:45:56,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968518521] [2020-11-29 18:45:56,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:45:56,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:45:56,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:45:56,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:45:56,538 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states. [2020-11-29 18:45:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:45:56,733 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-11-29 18:45:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:45:56,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 18:45:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:45:56,735 INFO L225 Difference]: With dead ends: 83 [2020-11-29 18:45:56,735 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 18:45:56,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:45:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 18:45:56,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-11-29 18:45:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 18:45:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-11-29 18:45:56,745 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2020-11-29 18:45:56,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:45:56,746 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-11-29 18:45:56,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:45:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-11-29 18:45:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 18:45:56,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:45:56,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:45:56,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:45:56,977 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 18:45:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:45:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1885484539, now seen corresponding path program 1 times [2020-11-29 18:45:56,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:45:56,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153396008] [2020-11-29 18:45:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:45:56,989 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:45:56,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626534245] [2020-11-29 18:45:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/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 18:45:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:45:57,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 18:45:57,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:45:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:45:57,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153396008] [2020-11-29 18:45:57,097 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:45:57,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626534245] [2020-11-29 18:45:57,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:45:57,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 18:45:57,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630089443] [2020-11-29 18:45:57,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:45:57,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:45:57,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:45:57,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:45:57,099 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 5 states. [2020-11-29 18:45:57,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:45:57,130 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2020-11-29 18:45:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:45:57,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 18:45:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:45:57,134 INFO L225 Difference]: With dead ends: 80 [2020-11-29 18:45:57,134 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 18:45:57,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 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 18:45:57,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 18:45:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-29 18:45:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 18:45:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2020-11-29 18:45:57,149 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 20 [2020-11-29 18:45:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:45:57,150 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2020-11-29 18:45:57,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:45:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-11-29 18:45:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 18:45:57,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:45:57,152 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 18:45:57,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:45:57,368 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 18:45:57,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:45:57,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1678751895, now seen corresponding path program 1 times [2020-11-29 18:45:57,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:45:57,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880992472] [2020-11-29 18:45:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:45:57,380 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:45:57,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033229540] [2020-11-29 18:45:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/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 18:45:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:45:57,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:45:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:45:57,448 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:45:57,494 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:45:57,494 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:45:57,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 18:45:57,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:45:57 BoogieIcfgContainer [2020-11-29 18:45:57,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:45:57,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:45:57,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:45:57,772 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:45:57,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:45:52" (3/4) ... [2020-11-29 18:45:57,774 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:45:57,820 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fdb408b0-edcf-46df-93d1-036987604132/bin/uautomizer/witness.graphml [2020-11-29 18:45:57,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:45:57,822 INFO L168 Benchmark]: Toolchain (without parser) took 6568.29 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 75.6 MB in the beginning and 74.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:45:57,822 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 36.4 MB in the beginning and 36.3 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:45:57,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.41 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 81.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:45:57,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.90 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 80.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:45:57,824 INFO L168 Benchmark]: Boogie Preprocessor took 48.55 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:45:57,825 INFO L168 Benchmark]: RCFGBuilder took 536.40 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 61.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:45:57,826 INFO L168 Benchmark]: TraceAbstraction took 5480.00 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 60.9 MB in the beginning and 77.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:45:57,827 INFO L168 Benchmark]: Witness Printer took 49.13 ms. Allocated memory is still 134.2 MB. Free memory was 77.6 MB in the beginning and 74.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:45:57,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 36.4 MB in the beginning and 36.3 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.41 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 81.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.90 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 80.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.55 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 536.40 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 61.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5480.00 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 60.9 MB in the beginning and 77.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Witness Printer took 49.13 ms. Allocated memory is still 134.2 MB. Free memory was 77.6 MB in the beginning and 74.5 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++<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] [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 FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND TRUE !(cond) VAL [counter=2] [L8] __assert_fail("0", "cohencu-ll.c", 8, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 207 SDtfs, 157 SDslu, 274 SDs, 0 SdLazy, 221 SolverSat, 45 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, 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, 6 MinimizatonAttempts, 61 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 2732 SizeOfPredicates, 14 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 4/5 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...