./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs2f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73252317e8e8ddde1fed282fcf12f7cfbb9f94a9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-11-15 20:13:24,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:13:24,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:13:24,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:13:24,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:13:24,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:13:24,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:13:24,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:13:24,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:13:24,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:13:24,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:13:24,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:13:24,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:13:24,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:13:24,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:13:24,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:13:24,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:13:24,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:13:24,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:13:24,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:13:24,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:13:24,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:13:24,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:13:24,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:13:24,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:13:24,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:13:24,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:13:24,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:13:24,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:13:24,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:13:24,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:13:24,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:13:24,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:13:24,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:13:24,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:13:24,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:13:24,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:13:24,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:13:24,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:13:24,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:13:24,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:13:24,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:13:24,850 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:13:24,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:13:24,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:13:24,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:13:24,852 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:13:24,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:13:24,853 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:13:24,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:13:24,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:13:24,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:13:24,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:13:24,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:13:24,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:13:24,855 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:13:24,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:13:24,856 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:13:24,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:13:24,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:13:24,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:13:24,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:13:24,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:13:24,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:13:24,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:13:24,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:13:24,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:13:24,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:13:24,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:13:24,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:13:24,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5e679754-8319-495d-8666-0926129c1a9b/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(__VERIFIER_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 -> 73252317e8e8ddde1fed282fcf12f7cfbb9f94a9 [2019-11-15 20:13:24,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:13:24,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:13:24,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:13:24,921 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:13:24,922 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:13:24,923 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/../../sv-benchmarks/c/array-fpi/brs2f.c [2019-11-15 20:13:24,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/data/cdf9935f4/2c8fee361110415e8c6d50254022c34a/FLAG6e8a48766 [2019-11-15 20:13:25,368 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:13:25,369 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/sv-benchmarks/c/array-fpi/brs2f.c [2019-11-15 20:13:25,375 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/data/cdf9935f4/2c8fee361110415e8c6d50254022c34a/FLAG6e8a48766 [2019-11-15 20:13:25,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/data/cdf9935f4/2c8fee361110415e8c6d50254022c34a [2019-11-15 20:13:25,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:13:25,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:13:25,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:13:25,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:13:25,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:13:25,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:13:25" (1/1) ... [2019-11-15 20:13:25,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2b7627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:25, skipping insertion in model container [2019-11-15 20:13:25,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:13:25" (1/1) ... [2019-11-15 20:13:25,810 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:13:25,825 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:13:26,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:13:26,116 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:13:26,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:13:26,168 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:13:26,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26 WrapperNode [2019-11-15 20:13:26,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:13:26,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:13:26,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:13:26,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:13:26,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:13:26,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:13:26,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:13:26,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:13:26,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... [2019-11-15 20:13:26,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:13:26,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:13:26,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:13:26,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:13:26,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/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 [2019-11-15 20:13:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:13:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:13:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 20:13:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:13:26,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:13:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 20:13:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:13:26,664 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:13:26,665 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-15 20:13:26,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:13:26 BoogieIcfgContainer [2019-11-15 20:13:26,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:13:26,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:13:26,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:13:26,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:13:26,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:13:25" (1/3) ... [2019-11-15 20:13:26,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a1c065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:13:26, skipping insertion in model container [2019-11-15 20:13:26,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:13:26" (2/3) ... [2019-11-15 20:13:26,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a1c065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:13:26, skipping insertion in model container [2019-11-15 20:13:26,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:13:26" (3/3) ... [2019-11-15 20:13:26,674 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2019-11-15 20:13:26,685 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:13:26,692 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 20:13:26,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 20:13:26,731 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:13:26,731 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:13:26,732 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:13:26,732 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:13:26,732 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:13:26,732 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:13:26,733 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:13:26,733 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:13:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-15 20:13:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 20:13:26,757 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:13:26,758 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:13:26,759 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:13:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:13:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1623807605, now seen corresponding path program 1 times [2019-11-15 20:13:26,774 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:13:26,775 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455048585] [2019-11-15 20:13:26,775 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:26,775 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:26,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:13:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:13:26,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455048585] [2019-11-15 20:13:26,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:13:26,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:13:26,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640489221] [2019-11-15 20:13:26,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 20:13:26,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:13:26,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 20:13:26,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:13:26,901 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-15 20:13:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:13:26,917 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-11-15 20:13:26,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 20:13:26,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-15 20:13:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:13:26,926 INFO L225 Difference]: With dead ends: 30 [2019-11-15 20:13:26,927 INFO L226 Difference]: Without dead ends: 14 [2019-11-15 20:13:26,929 INFO L600 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 [2019-11-15 20:13:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-15 20:13:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-15 20:13:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 20:13:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-15 20:13:26,958 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2019-11-15 20:13:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:13:26,958 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-15 20:13:26,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 20:13:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-15 20:13:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 20:13:26,959 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:13:26,959 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:13:26,960 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:13:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:13:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1308886944, now seen corresponding path program 1 times [2019-11-15 20:13:26,960 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:13:26,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350033682] [2019-11-15 20:13:26,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:26,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:26,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:13:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:13:27,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350033682] [2019-11-15 20:13:27,025 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:13:27,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:13:27,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381090642] [2019-11-15 20:13:27,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:13:27,027 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:13:27,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:13:27,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:13:27,028 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-11-15 20:13:27,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:13:27,078 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2019-11-15 20:13:27,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:13:27,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-15 20:13:27,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:13:27,079 INFO L225 Difference]: With dead ends: 28 [2019-11-15 20:13:27,079 INFO L226 Difference]: Without dead ends: 17 [2019-11-15 20:13:27,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:13:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-15 20:13:27,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-15 20:13:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 20:13:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-15 20:13:27,085 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2019-11-15 20:13:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:13:27,085 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-15 20:13:27,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:13:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-15 20:13:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 20:13:27,086 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:13:27,086 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:13:27,086 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:13:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:13:27,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1738269227, now seen corresponding path program 1 times [2019-11-15 20:13:27,087 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:13:27,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297305430] [2019-11-15 20:13:27,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:27,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:27,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:13:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:13:27,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297305430] [2019-11-15 20:13:27,165 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:13:27,166 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:13:27,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842828] [2019-11-15 20:13:27,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:13:27,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:13:27,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:13:27,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:13:27,167 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-11-15 20:13:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:13:27,227 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-15 20:13:27,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:13:27,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-15 20:13:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:13:27,229 INFO L225 Difference]: With dead ends: 27 [2019-11-15 20:13:27,229 INFO L226 Difference]: Without dead ends: 20 [2019-11-15 20:13:27,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:13:27,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-15 20:13:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-15 20:13:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 20:13:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-15 20:13:27,233 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-15 20:13:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:13:27,233 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-15 20:13:27,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:13:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-15 20:13:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 20:13:27,234 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:13:27,234 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:13:27,234 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:13:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:13:27,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1896871737, now seen corresponding path program 1 times [2019-11-15 20:13:27,235 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:13:27,235 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789147291] [2019-11-15 20:13:27,235 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:27,235 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:27,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:13:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:13:27,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789147291] [2019-11-15 20:13:27,348 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:13:27,348 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:13:27,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700865654] [2019-11-15 20:13:27,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:13:27,349 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:13:27,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:13:27,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:13:27,349 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2019-11-15 20:13:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:13:27,408 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-11-15 20:13:27,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:13:27,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-15 20:13:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:13:27,409 INFO L225 Difference]: With dead ends: 25 [2019-11-15 20:13:27,409 INFO L226 Difference]: Without dead ends: 21 [2019-11-15 20:13:27,410 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:13:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-15 20:13:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-15 20:13:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 20:13:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-15 20:13:27,414 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2019-11-15 20:13:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:13:27,414 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-15 20:13:27,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:13:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-15 20:13:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 20:13:27,415 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:13:27,415 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:13:27,415 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:13:27,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:13:27,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1877487447, now seen corresponding path program 1 times [2019-11-15 20:13:27,416 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:13:27,416 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669631176] [2019-11-15 20:13:27,416 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:27,416 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:27,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:13:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:13:27,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669631176] [2019-11-15 20:13:27,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891545353] [2019-11-15 20:13:27,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/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 [2019-11-15 20:13:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:27,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:13:27,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:13:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:13:27,705 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:13:27,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-15 20:13:27,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292605556] [2019-11-15 20:13:27,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 20:13:27,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:13:27,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 20:13:27,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:13:27,706 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 10 states. [2019-11-15 20:13:27,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:13:27,905 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2019-11-15 20:13:27,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 20:13:27,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-15 20:13:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:13:27,906 INFO L225 Difference]: With dead ends: 41 [2019-11-15 20:13:27,906 INFO L226 Difference]: Without dead ends: 27 [2019-11-15 20:13:27,907 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:13:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-15 20:13:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-15 20:13:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-15 20:13:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-15 20:13:27,911 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2019-11-15 20:13:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:13:27,911 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-15 20:13:27,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 20:13:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-15 20:13:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 20:13:27,912 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:13:27,912 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:13:28,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:13:28,116 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:13:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:13:28,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1112618428, now seen corresponding path program 1 times [2019-11-15 20:13:28,117 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:13:28,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352169751] [2019-11-15 20:13:28,117 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:28,117 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:28,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:13:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:13:28,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352169751] [2019-11-15 20:13:28,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780502628] [2019-11-15 20:13:28,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/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 [2019-11-15 20:13:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:28,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-15 20:13:28,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:13:28,824 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-15 20:13:28,825 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:13:28,836 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:13:28,837 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:13:28,837 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-11-15 20:13:28,929 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 20:13:28,932 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-15 20:13:28,933 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:13:28,952 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:13:28,953 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:13:28,953 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-11-15 20:13:29,064 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 20:13:29,066 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2019-11-15 20:13:29,067 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:13:29,086 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:13:29,088 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 20:13:29,088 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:28 [2019-11-15 20:13:29,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:13:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:13:29,201 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:13:29,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2019-11-15 20:13:29,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850065096] [2019-11-15 20:13:29,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-15 20:13:29,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:13:29,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-15 20:13:29,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2019-11-15 20:13:29,205 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 23 states. [2019-11-15 20:13:29,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:13:29,990 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-11-15 20:13:29,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 20:13:29,991 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2019-11-15 20:13:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:13:29,992 INFO L225 Difference]: With dead ends: 49 [2019-11-15 20:13:29,992 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 20:13:29,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2019-11-15 20:13:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 20:13:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-15 20:13:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 20:13:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-11-15 20:13:29,998 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2019-11-15 20:13:29,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:13:29,999 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-15 20:13:29,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-15 20:13:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-11-15 20:13:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 20:13:30,000 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:13:30,000 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:13:30,211 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:13:30,212 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:13:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:13:30,212 INFO L82 PathProgramCache]: Analyzing trace with hash -945725626, now seen corresponding path program 2 times [2019-11-15 20:13:30,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:13:30,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350597190] [2019-11-15 20:13:30,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:30,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:30,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:13:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:13:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:13:30,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350597190] [2019-11-15 20:13:30,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053848371] [2019-11-15 20:13:30,404 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/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 [2019-11-15 20:13:30,465 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:13:30,465 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:13:30,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 20:13:30,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:13:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:13:30,587 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:13:30,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2019-11-15 20:13:30,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867747293] [2019-11-15 20:13:30,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-15 20:13:30,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:13:30,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-15 20:13:30,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2019-11-15 20:13:30,588 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 19 states. [2019-11-15 20:13:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:13:30,845 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-11-15 20:13:30,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 20:13:30,846 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2019-11-15 20:13:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:13:30,846 INFO L225 Difference]: With dead ends: 48 [2019-11-15 20:13:30,846 INFO L226 Difference]: Without dead ends: 33 [2019-11-15 20:13:30,847 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2019-11-15 20:13:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-15 20:13:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2019-11-15 20:13:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 20:13:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-11-15 20:13:30,855 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2019-11-15 20:13:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:13:30,855 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-11-15 20:13:30,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-15 20:13:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-11-15 20:13:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 20:13:30,857 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:13:30,857 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:13:31,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:13:31,058 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:13:31,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:13:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1279110679, now seen corresponding path program 3 times [2019-11-15 20:13:31,059 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:13:31,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301603824] [2019-11-15 20:13:31,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:31,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:13:31,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:13:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:13:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:13:31,160 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:13:31,160 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:13:31,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:13:31 BoogieIcfgContainer [2019-11-15 20:13:31,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:13:31,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:13:31,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:13:31,227 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:13:31,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:13:26" (3/4) ... [2019-11-15 20:13:31,229 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 20:13:31,310 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5e679754-8319-495d-8666-0926129c1a9b/bin/uautomizer/witness.graphml [2019-11-15 20:13:31,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:13:31,312 INFO L168 Benchmark]: Toolchain (without parser) took 5516.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:13:31,312 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:13:31,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:13:31,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:13:31,316 INFO L168 Benchmark]: Boogie Preprocessor took 51.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:13:31,317 INFO L168 Benchmark]: RCFGBuilder took 392.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:13:31,317 INFO L168 Benchmark]: TraceAbstraction took 4559.40 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -8.5 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:13:31,317 INFO L168 Benchmark]: Witness Printer took 84.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:13:31,322 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 373.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 392.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4559.40 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -8.5 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. * Witness Printer took 84.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=3] [L26] COND TRUE i