./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 8826306ae53b4154d29530d9da06b16418244e52 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 14:30:36,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 14:30:36,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 14:30:36,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 14:30:36,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 14:30:36,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 14:30:36,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 14:30:36,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 14:30:36,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 14:30:36,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 14:30:36,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 14:30:36,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 14:30:36,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 14:30:36,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 14:30:36,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 14:30:36,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 14:30:36,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 14:30:36,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 14:30:36,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 14:30:36,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 14:30:36,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 14:30:36,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 14:30:36,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 14:30:36,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 14:30:36,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 14:30:36,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 14:30:36,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 14:30:36,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 14:30:36,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 14:30:36,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 14:30:36,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 14:30:36,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 14:30:36,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 14:30:36,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 14:30:36,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 14:30:36,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 14:30:36,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 14:30:36,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 14:30:36,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 14:30:36,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 14:30:36,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 14:30:36,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 14:30:36,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 14:30:36,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 14:30:36,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 14:30:36,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 14:30:36,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 14:30:36,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 14:30:36,933 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 14:30:36,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 14:30:36,933 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 14:30:36,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 14:30:36,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 14:30:36,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 14:30:36,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 14:30:36,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 14:30:36,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 14:30:36,934 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 14:30:36,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 14:30:36,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 14:30:36,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 14:30:36,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 14:30:36,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 14:30:36,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 14:30:36,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 14:30:36,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 14:30:36,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 14:30:36,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 14:30:36,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 14:30:36,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 14:30:36,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 14:30:36,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 14:30:36,936 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8826306ae53b4154d29530d9da06b16418244e52 [2021-08-29 14:30:37,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 14:30:37,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 14:30:37,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 14:30:37,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 14:30:37,180 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 14:30:37,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-08-29 14:30:37,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b58b6bb6/2228e64c587a4624ba3d44fac580f0c3/FLAGd25d0c13e [2021-08-29 14:30:37,554 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 14:30:37,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-08-29 14:30:37,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b58b6bb6/2228e64c587a4624ba3d44fac580f0c3/FLAGd25d0c13e [2021-08-29 14:30:37,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b58b6bb6/2228e64c587a4624ba3d44fac580f0c3 [2021-08-29 14:30:37,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 14:30:37,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 14:30:37,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 14:30:37,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 14:30:37,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 14:30:37,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316ddf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37, skipping insertion in model container [2021-08-29 14:30:37,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 14:30:37,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 14:30:37,706 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2021-08-29 14:30:37,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 14:30:37,727 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 14:30:37,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2021-08-29 14:30:37,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 14:30:37,761 INFO L208 MainTranslator]: Completed translation [2021-08-29 14:30:37,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37 WrapperNode [2021-08-29 14:30:37,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 14:30:37,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 14:30:37,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 14:30:37,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 14:30:37,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 14:30:37,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 14:30:37,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 14:30:37,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 14:30:37,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 14:30:37,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 14:30:37,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 14:30:37,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 14:30:37,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (1/1) ... [2021-08-29 14:30:37,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 14:30:37,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 14:30:37,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 14:30:37,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 14:30:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 14:30:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 14:30:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 14:30:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 14:30:38,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 14:30:38,030 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-29 14:30:38,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:30:38 BoogieIcfgContainer [2021-08-29 14:30:38,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 14:30:38,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 14:30:38,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 14:30:38,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 14:30:38,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:30:37" (1/3) ... [2021-08-29 14:30:38,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa4bd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:30:38, skipping insertion in model container [2021-08-29 14:30:38,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:30:37" (2/3) ... [2021-08-29 14:30:38,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa4bd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:30:38, skipping insertion in model container [2021-08-29 14:30:38,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:30:38" (3/3) ... [2021-08-29 14:30:38,036 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2021-08-29 14:30:38,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 14:30:38,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 14:30:38,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 14:30:38,072 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 14:30:38,072 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 14:30:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 14:30:38,088 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 14:30:38,089 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 14:30:38,089 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 14:30:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 14:30:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2021-08-29 14:30:38,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 14:30:38,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396089235] [2021-08-29 14:30:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:38,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 14:30:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 14:30:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 14:30:38,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 14:30:38,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396089235] [2021-08-29 14:30:38,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396089235] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 14:30:38,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 14:30:38,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 14:30:38,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029783525] [2021-08-29 14:30:38,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 14:30:38,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 14:30:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 14:30:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 14:30:38,273 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 14:30:38,330 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-08-29 14:30:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 14:30:38,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 14:30:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 14:30:38,336 INFO L225 Difference]: With dead ends: 39 [2021-08-29 14:30:38,337 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 14:30:38,338 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 14:30:38,341 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.12ms IncrementalHoareTripleChecker+Time [2021-08-29 14:30:38,342 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 45.12ms Time] [2021-08-29 14:30:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 14:30:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-29 14:30:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-08-29 14:30:38,365 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2021-08-29 14:30:38,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 14:30:38,365 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-08-29 14:30:38,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-08-29 14:30:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 14:30:38,366 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 14:30:38,366 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 14:30:38,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 14:30:38,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 14:30:38,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 14:30:38,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-08-29 14:30:38,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 14:30:38,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084393275] [2021-08-29 14:30:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:38,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 14:30:38,401 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 14:30:38,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025185706] [2021-08-29 14:30:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:38,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 14:30:38,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 14:30:38,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 14:30:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 14:30:38,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-29 14:30:38,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 14:30:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 14:30:38,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 14:30:38,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 14:30:38,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084393275] [2021-08-29 14:30:38,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 14:30:38,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025185706] [2021-08-29 14:30:38,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025185706] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 14:30:38,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 14:30:38,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 14:30:38,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133349539] [2021-08-29 14:30:38,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 14:30:38,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 14:30:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 14:30:38,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 14:30:38,670 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 14:30:38,817 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-08-29 14:30:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 14:30:38,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 14:30:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 14:30:38,818 INFO L225 Difference]: With dead ends: 32 [2021-08-29 14:30:38,818 INFO L226 Difference]: Without dead ends: 30 [2021-08-29 14:30:38,820 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 93.64ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-08-29 14:30:38,820 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.26ms IncrementalHoareTripleChecker+Time [2021-08-29 14:30:38,824 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 70.26ms Time] [2021-08-29 14:30:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-29 14:30:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-08-29 14:30:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-08-29 14:30:38,827 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-08-29 14:30:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 14:30:38,827 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-08-29 14:30:38,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-08-29 14:30:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 14:30:38,828 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 14:30:38,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 14:30:38,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 14:30:39,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:39,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 14:30:39,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 14:30:39,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2021-08-29 14:30:39,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 14:30:39,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262285917] [2021-08-29 14:30:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:39,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 14:30:39,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 14:30:39,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915934547] [2021-08-29 14:30:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:39,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:39,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 14:30:39,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 14:30:39,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 14:30:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 14:30:39,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 14:30:39,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 14:30:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 14:30:39,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 14:30:39,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 14:30:39,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262285917] [2021-08-29 14:30:39,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 14:30:39,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915934547] [2021-08-29 14:30:39,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915934547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 14:30:39,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 14:30:39,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 14:30:39,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859210101] [2021-08-29 14:30:39,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 14:30:39,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 14:30:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 14:30:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 14:30:39,107 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:39,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 14:30:39,130 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-08-29 14:30:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 14:30:39,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 14:30:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 14:30:39,131 INFO L225 Difference]: With dead ends: 24 [2021-08-29 14:30:39,131 INFO L226 Difference]: Without dead ends: 20 [2021-08-29 14:30:39,131 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.13ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 14:30:39,132 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.62ms IncrementalHoareTripleChecker+Time [2021-08-29 14:30:39,132 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 20.62ms Time] [2021-08-29 14:30:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-29 14:30:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-29 14:30:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-08-29 14:30:39,135 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2021-08-29 14:30:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 14:30:39,135 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-08-29 14:30:39,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-08-29 14:30:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 14:30:39,135 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 14:30:39,135 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 14:30:39,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 14:30:39,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 14:30:39,349 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 14:30:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 14:30:39,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2021-08-29 14:30:39,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 14:30:39,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825704430] [2021-08-29 14:30:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:39,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 14:30:39,358 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 14:30:39,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938208442] [2021-08-29 14:30:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:39,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 14:30:39,359 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 14:30:39,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 14:30:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 14:30:39,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 14:30:39,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 14:30:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 14:30:39,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 14:30:39,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 14:30:39,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825704430] [2021-08-29 14:30:39,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 14:30:39,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938208442] [2021-08-29 14:30:39,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938208442] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 14:30:39,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 14:30:39,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 14:30:39,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119598675] [2021-08-29 14:30:39,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 14:30:39,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 14:30:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 14:30:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 14:30:39,483 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 14:30:39,550 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-08-29 14:30:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 14:30:39,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-29 14:30:39,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 14:30:39,551 INFO L225 Difference]: With dead ends: 24 [2021-08-29 14:30:39,552 INFO L226 Difference]: Without dead ends: 18 [2021-08-29 14:30:39,552 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.02ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 14:30:39,552 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.34ms IncrementalHoareTripleChecker+Time [2021-08-29 14:30:39,557 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 38.34ms Time] [2021-08-29 14:30:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-29 14:30:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-08-29 14:30:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-29 14:30:39,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-08-29 14:30:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 14:30:39,565 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-29 14:30:39,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-29 14:30:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 14:30:39,566 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 14:30:39,567 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 14:30:39,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 14:30:39,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:39,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 14:30:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 14:30:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash -132612007, now seen corresponding path program 1 times [2021-08-29 14:30:39,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 14:30:39,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999570056] [2021-08-29 14:30:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:39,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 14:30:39,791 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 14:30:39,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660205483] [2021-08-29 14:30:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:39,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 14:30:39,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 14:30:39,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 14:30:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 14:30:39,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 14:30:39,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 14:30:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 14:30:39,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 14:30:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 14:30:39,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 14:30:39,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999570056] [2021-08-29 14:30:39,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 14:30:39,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660205483] [2021-08-29 14:30:39,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660205483] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 14:30:39,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 14:30:39,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-08-29 14:30:39,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165925174] [2021-08-29 14:30:39,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 14:30:39,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 14:30:39,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 14:30:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-29 14:30:39,945 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 14:30:40,021 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2021-08-29 14:30:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 14:30:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-29 14:30:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 14:30:40,022 INFO L225 Difference]: With dead ends: 36 [2021-08-29 14:30:40,022 INFO L226 Difference]: Without dead ends: 32 [2021-08-29 14:30:40,023 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 27.22ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-29 14:30:40,023 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.73ms IncrementalHoareTripleChecker+Time [2021-08-29 14:30:40,023 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 67 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 56.73ms Time] [2021-08-29 14:30:40,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-29 14:30:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-29 14:30:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-08-29 14:30:40,032 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2021-08-29 14:30:40,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 14:30:40,032 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-08-29 14:30:40,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-08-29 14:30:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-29 14:30:40,033 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 14:30:40,033 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 14:30:40,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 14:30:40,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:40,234 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 14:30:40,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 14:30:40,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1955278293, now seen corresponding path program 2 times [2021-08-29 14:30:40,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 14:30:40,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48581289] [2021-08-29 14:30:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:40,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 14:30:40,242 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 14:30:40,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091797257] [2021-08-29 14:30:40,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 14:30:40,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:40,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 14:30:40,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 14:30:40,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 14:30:40,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 14:30:40,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 14:30:40,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 14:30:40,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 14:30:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 14:30:40,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 14:30:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 14:30:40,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 14:30:40,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48581289] [2021-08-29 14:30:40,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 14:30:40,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091797257] [2021-08-29 14:30:40,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091797257] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 14:30:40,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 14:30:40,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-08-29 14:30:40,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002637808] [2021-08-29 14:30:40,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-29 14:30:40,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 14:30:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-29 14:30:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-29 14:30:40,518 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 14:30:40,676 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2021-08-29 14:30:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-29 14:30:40,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-29 14:30:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 14:30:40,678 INFO L225 Difference]: With dead ends: 66 [2021-08-29 14:30:40,678 INFO L226 Difference]: Without dead ends: 62 [2021-08-29 14:30:40,678 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 104.66ms TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2021-08-29 14:30:40,679 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.45ms IncrementalHoareTripleChecker+Time [2021-08-29 14:30:40,679 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 134 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [14 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 88.45ms Time] [2021-08-29 14:30:40,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-29 14:30:40,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-08-29 14:30:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-08-29 14:30:40,685 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 31 [2021-08-29 14:30:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 14:30:40,685 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-08-29 14:30:40,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 14:30:40,686 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-08-29 14:30:40,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-29 14:30:40,687 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 14:30:40,687 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 14:30:40,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 14:30:40,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:40,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 14:30:40,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 14:30:40,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1641990037, now seen corresponding path program 3 times [2021-08-29 14:30:40,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 14:30:40,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980845100] [2021-08-29 14:30:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 14:30:40,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 14:30:40,914 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 14:30:40,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966906060] [2021-08-29 14:30:40,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 14:30:40,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 14:30:40,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 14:30:40,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 14:30:40,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-08-29 14:30:40,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-08-29 14:30:40,981 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 14:30:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 14:30:41,030 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 14:30:41,031 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 14:30:41,031 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 14:30:41,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 14:30:41,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 14:30:41,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 14:30:41,262 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 14:30:41,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 02:30:41 BoogieIcfgContainer [2021-08-29 14:30:41,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 14:30:41,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 14:30:41,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 14:30:41,306 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 14:30:41,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:30:38" (3/4) ... [2021-08-29 14:30:41,308 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 14:30:41,349 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 14:30:41,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 14:30:41,350 INFO L158 Benchmark]: Toolchain (without parser) took 3780.45ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 29.0MB in the beginning and 48.9MB in the end (delta: -19.9MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-08-29 14:30:41,350 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 34.0MB in the end (delta: 39.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 14:30:41,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.67ms. Allocated memory is still 52.4MB. Free memory was 28.9MB in the beginning and 35.8MB in the end (delta: -6.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 14:30:41,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.32ms. Allocated memory is still 52.4MB. Free memory was 35.7MB in the beginning and 34.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 14:30:41,350 INFO L158 Benchmark]: Boogie Preprocessor took 31.25ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 33.2MB in the end (delta: 953.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 14:30:41,351 INFO L158 Benchmark]: RCFGBuilder took 197.72ms. Allocated memory is still 52.4MB. Free memory was 33.0MB in the beginning and 24.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 14:30:41,351 INFO L158 Benchmark]: TraceAbstraction took 3273.59ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 24.1MB in the beginning and 54.6MB in the end (delta: -30.5MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2021-08-29 14:30:41,351 INFO L158 Benchmark]: Witness Printer took 43.55ms. Allocated memory is still 75.5MB. Free memory was 54.6MB in the beginning and 48.9MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 14:30:41,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 34.0MB in the end (delta: 39.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.67ms. Allocated memory is still 52.4MB. Free memory was 28.9MB in the beginning and 35.8MB in the end (delta: -6.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.32ms. Allocated memory is still 52.4MB. Free memory was 35.7MB in the beginning and 34.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.25ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 33.2MB in the end (delta: 953.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 197.72ms. Allocated memory is still 52.4MB. Free memory was 33.0MB in the beginning and 24.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3273.59ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 24.1MB in the beginning and 54.6MB in the end (delta: -30.5MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * Witness Printer took 43.55ms. Allocated memory is still 75.5MB. Free memory was 54.6MB in the beginning and 48.9MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) VAL [counter=0] [L13] COND FALSE !(!cond) VAL [counter=0] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND FALSE !(counter++<10) [L16] COND TRUE !(cond) VAL [counter=11] [L18] reach_error() VAL [counter=11] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3193.66ms, OverallIterations: 7, TraceHistogramMax: 11, EmptinessCheckTime: 13.22ms, AutomataDifference: 610.39ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 5.65ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 153 SdHoareTripleChecker+Valid, 319.51ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 228.61ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 385 IncrementalHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 0 mSDtfsCounter, 385 mSolverCounterSat, 4.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 269.70ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=6, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 36.81ms AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.04ms SsaConstructionTime, 133.91ms SatisfiabilityAnalysisTime, 697.22ms InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 SizeOfPredicates, 21 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 0/80 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! [2021-08-29 14:30:41,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...