./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/cohendiv-ll_unwindbound1.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 a3e843bfc822d054ad9b10c58d6f83fcd4aca808 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 05:10:23,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:10:23,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:10:23,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:10:23,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:10:23,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:10:23,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:10:23,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:10:23,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:10:23,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:10:23,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:10:23,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:10:23,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:10:23,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:10:23,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:10:23,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:10:23,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:10:23,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:10:23,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:10:23,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:10:23,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:10:23,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:10:23,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:10:23,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:10:23,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:10:23,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:10:23,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:10:23,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:10:23,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:10:23,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:10:23,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:10:23,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:10:23,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:10:23,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:10:23,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:10:23,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:10:23,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:10:23,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:10:23,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:10:23,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:10:23,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:10:23,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:10:23,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:10:23,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:10:23,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:10:23,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:10:23,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:10:23,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:10:23,115 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:10:23,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:10:23,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:10:23,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:10:23,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:10:23,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:10:23,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:10:23,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:10:23,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:10:23,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:10:23,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:10:23,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:10:23,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:10:23,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:10:23,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:10:23,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3e843bfc822d054ad9b10c58d6f83fcd4aca808 [2021-08-26 05:10:23,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:10:23,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:10:23,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:10:23,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:10:23,349 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:10:23,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-08-26 05:10:23,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f94dea2b6/e8c33ecae86a4880b93fe104eeef32f9/FLAGabbda738c [2021-08-26 05:10:23,764 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:10:23,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-08-26 05:10:23,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f94dea2b6/e8c33ecae86a4880b93fe104eeef32f9/FLAGabbda738c [2021-08-26 05:10:23,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f94dea2b6/e8c33ecae86a4880b93fe104eeef32f9 [2021-08-26 05:10:23,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:10:23,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:10:23,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:10:23,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:10:23,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:10:23,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dae830a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23, skipping insertion in model container [2021-08-26 05:10:23,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:10:23,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:10:23,894 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/cohendiv-ll_unwindbound1.c[576,589] [2021-08-26 05:10:23,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:10:23,908 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:10:23,917 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/cohendiv-ll_unwindbound1.c[576,589] [2021-08-26 05:10:23,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:10:23,929 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:10:23,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23 WrapperNode [2021-08-26 05:10:23,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:10:23,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:10:23,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:10:23,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:10:23,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:10:23,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:10:23,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:10:23,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:10:23,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:23,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:10:23,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:10:23,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:10:23,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:10:23,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (1/1) ... [2021-08-26 05:10:24,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:10:24,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:10:24,021 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) [2021-08-26 05:10:24,041 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 [2021-08-26 05:10:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:10:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:10:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:10:24,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:10:24,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:10:24,311 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-26 05:10:24,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:10:24 BoogieIcfgContainer [2021-08-26 05:10:24,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:10:24,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:10:24,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:10:24,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:10:24,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:10:23" (1/3) ... [2021-08-26 05:10:24,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68eaed07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:10:24, skipping insertion in model container [2021-08-26 05:10:24,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:10:23" (2/3) ... [2021-08-26 05:10:24,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68eaed07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:10:24, skipping insertion in model container [2021-08-26 05:10:24,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:10:24" (3/3) ... [2021-08-26 05:10:24,317 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound1.c [2021-08-26 05:10:24,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:10:24,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-26 05:10:24,375 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:10:24,382 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 [2021-08-26 05:10:24,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-26 05:10:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 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) [2021-08-26 05:10:24,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 05:10:24,404 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:10:24,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:10:24,405 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:10:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:10:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash 122367883, now seen corresponding path program 1 times [2021-08-26 05:10:24,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:10:24,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65924419] [2021-08-26 05:10:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:24,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:10:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:10:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:10:24,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:10:24,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65924419] [2021-08-26 05:10:24,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65924419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:10:24,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:10:24,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:10:24,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980011771] [2021-08-26 05:10:24,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:10:24,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:10:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:10:24,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:10:24,551 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-08-26 05:10:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:10:24,567 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-08-26 05:10:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:10:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-08-26 05:10:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:10:24,572 INFO L225 Difference]: With dead ends: 79 [2021-08-26 05:10:24,572 INFO L226 Difference]: Without dead ends: 37 [2021-08-26 05:10:24,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:10:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-26 05:10:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-26 05:10:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 36 states have internal predecessors, (40), 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) [2021-08-26 05:10:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-08-26 05:10:24,601 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-08-26 05:10:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:10:24,603 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-08-26 05:10:24,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-08-26 05:10:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-08-26 05:10:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 05:10:24,604 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:10:24,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:10:24,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:10:24,605 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:10:24,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:10:24,607 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-08-26 05:10:24,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:10:24,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449564221] [2021-08-26 05:10:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:24,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:10:24,641 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:10:24,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701006648] [2021-08-26 05:10:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:24,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:10:24,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:10:24,644 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) [2021-08-26 05:10:24,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 05:10:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:10:24,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 05:10:24,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:10:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:10:24,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:10:24,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449564221] [2021-08-26 05:10:24,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:10:24,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701006648] [2021-08-26 05:10:24,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701006648] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:10:24,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:10:24,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 05:10:24,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014896495] [2021-08-26 05:10:24,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:10:24,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:10:24,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:10:24,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:10:24,891 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-08-26 05:10:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:10:25,044 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-08-26 05:10:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:10:25,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2021-08-26 05:10:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:10:25,045 INFO L225 Difference]: With dead ends: 51 [2021-08-26 05:10:25,045 INFO L226 Difference]: Without dead ends: 49 [2021-08-26 05:10:25,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:10:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-26 05:10:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-08-26 05:10:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 39 states have internal predecessors, (44), 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) [2021-08-26 05:10:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-08-26 05:10:25,050 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2021-08-26 05:10:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:10:25,050 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-08-26 05:10:25,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-08-26 05:10:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-08-26 05:10:25,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 05:10:25,050 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:10:25,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:10:25,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 05:10:25,264 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 [2021-08-26 05:10:25,265 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:10:25,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:10:25,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1182906761, now seen corresponding path program 1 times [2021-08-26 05:10:25,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:10:25,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849545647] [2021-08-26 05:10:25,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:25,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:10:25,273 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:10:25,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85551077] [2021-08-26 05:10:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:25,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:10:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:10:25,274 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) [2021-08-26 05:10:25,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 05:10:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:10:25,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 05:10:25,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:10:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:10:25,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:10:25,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849545647] [2021-08-26 05:10:25,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:10:25,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85551077] [2021-08-26 05:10:25,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85551077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:10:25,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:10:25,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 05:10:25,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865684327] [2021-08-26 05:10:25,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:10:25,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:10:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:10:25,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:10:25,345 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-08-26 05:10:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:10:25,355 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-08-26 05:10:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:10:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-08-26 05:10:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:10:25,356 INFO L225 Difference]: With dead ends: 44 [2021-08-26 05:10:25,356 INFO L226 Difference]: Without dead ends: 40 [2021-08-26 05:10:25,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:10:25,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-26 05:10:25,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-26 05:10:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 39 states have internal predecessors, (43), 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) [2021-08-26 05:10:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-08-26 05:10:25,359 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2021-08-26 05:10:25,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:10:25,359 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-08-26 05:10:25,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-08-26 05:10:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-08-26 05:10:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 05:10:25,360 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:10:25,360 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:10:25,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 05:10:25,576 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 [2021-08-26 05:10:25,577 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:10:25,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:10:25,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-08-26 05:10:25,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:10:25,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762089442] [2021-08-26 05:10:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:25,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:10:25,584 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:10:25,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543499814] [2021-08-26 05:10:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:25,584 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:10:25,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:10:25,585 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) [2021-08-26 05:10:25,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 05:10:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:10:25,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 05:10:25,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:10:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:10:25,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:10:25,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762089442] [2021-08-26 05:10:25,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:10:25,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543499814] [2021-08-26 05:10:25,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543499814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:10:25,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:10:25,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 05:10:25,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655236634] [2021-08-26 05:10:25,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:10:25,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:10:25,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:10:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:10:25,749 INFO L87 Difference]: Start difference. First operand 40 states and 43 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) [2021-08-26 05:10:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:10:25,871 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-08-26 05:10:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:10:25,871 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 [2021-08-26 05:10:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:10:25,872 INFO L225 Difference]: With dead ends: 74 [2021-08-26 05:10:25,872 INFO L226 Difference]: Without dead ends: 66 [2021-08-26 05:10:25,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:10:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-26 05:10:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-08-26 05:10:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.326086956521739) internal successors, (61), 52 states have internal predecessors, (61), 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) [2021-08-26 05:10:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-08-26 05:10:25,889 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2021-08-26 05:10:25,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:10:25,889 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-08-26 05:10:25,889 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) [2021-08-26 05:10:25,889 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-08-26 05:10:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 05:10:25,890 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:10:25,890 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:10:25,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 05:10:26,104 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 [2021-08-26 05:10:26,105 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:10:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:10:26,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1896102171, now seen corresponding path program 1 times [2021-08-26 05:10:26,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:10:26,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752213180] [2021-08-26 05:10:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:26,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:10:26,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:10:26,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655011746] [2021-08-26 05:10:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:26,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:10:26,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:10:26,116 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) [2021-08-26 05:10:26,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 05:10:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:10:26,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 05:10:26,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:10:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:10:26,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:10:26,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752213180] [2021-08-26 05:10:26,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:10:26,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655011746] [2021-08-26 05:10:26,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655011746] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:10:26,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:10:26,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:10:26,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933354686] [2021-08-26 05:10:26,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:10:26,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:10:26,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:10:26,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:10:26,213 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-26 05:10:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:10:26,228 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2021-08-26 05:10:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 05:10:26,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-08-26 05:10:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:10:26,229 INFO L225 Difference]: With dead ends: 72 [2021-08-26 05:10:26,229 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 05:10:26,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:10:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 05:10:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-08-26 05:10:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 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) [2021-08-26 05:10:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-08-26 05:10:26,231 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14 [2021-08-26 05:10:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:10:26,231 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-08-26 05:10:26,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-26 05:10:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-08-26 05:10:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 05:10:26,232 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:10:26,232 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:10:26,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 05:10:26,444 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 [2021-08-26 05:10:26,445 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:10:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:10:26,445 INFO L82 PathProgramCache]: Analyzing trace with hash -643457925, now seen corresponding path program 1 times [2021-08-26 05:10:26,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:10:26,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475941874] [2021-08-26 05:10:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:26,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:10:26,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:10:26,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118010392] [2021-08-26 05:10:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:26,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:10:26,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:10:26,453 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) [2021-08-26 05:10:26,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 05:10:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:10:26,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 05:10:26,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:10:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:10:26,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:10:26,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475941874] [2021-08-26 05:10:26,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:10:26,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118010392] [2021-08-26 05:10:26,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118010392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:10:26,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:10:26,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 05:10:26,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865445574] [2021-08-26 05:10:26,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:10:26,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:10:26,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:10:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:10:26,556 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-08-26 05:10:26,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:10:26,572 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-08-26 05:10:26,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 05:10:26,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-08-26 05:10:26,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:10:26,573 INFO L225 Difference]: With dead ends: 36 [2021-08-26 05:10:26,573 INFO L226 Difference]: Without dead ends: 19 [2021-08-26 05:10:26,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:10:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-26 05:10:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-26 05:10:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 18 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) [2021-08-26 05:10:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-08-26 05:10:26,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 17 [2021-08-26 05:10:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:10:26,576 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-08-26 05:10:26,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-08-26 05:10:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-08-26 05:10:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 05:10:26,576 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:10:26,576 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:10:26,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 05:10:26,786 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 [2021-08-26 05:10:26,787 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:10:26,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:10:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1527669658, now seen corresponding path program 1 times [2021-08-26 05:10:26,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:10:26,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531255182] [2021-08-26 05:10:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:26,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:10:26,795 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:10:26,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613813881] [2021-08-26 05:10:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:10:26,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:10:26,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:10:26,796 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) [2021-08-26 05:10:26,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 05:10:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:10:26,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 05:10:26,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:10:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:10:27,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:10:27,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531255182] [2021-08-26 05:10:27,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:10:27,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613813881] [2021-08-26 05:10:27,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613813881] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:10:27,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:10:27,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:10:27,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625961093] [2021-08-26 05:10:27,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:10:27,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:10:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:10:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:10:27,016 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-08-26 05:10:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:10:27,050 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-08-26 05:10:27,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:10:27,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) Word has length 18 [2021-08-26 05:10:27,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:10:27,051 INFO L225 Difference]: With dead ends: 19 [2021-08-26 05:10:27,051 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:10:27,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:10:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:10:27,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:10:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-26 05:10:27,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:10:27,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-08-26 05:10:27,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:10:27,051 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:10:27,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-08-26 05:10:27,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:10:27,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:10:27,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:10:27,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:10:27,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:10:27,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:10:27,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:10:27,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:10:27,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:10:27,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 05:10:27,260 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 [2021-08-26 05:10:27,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:10:27,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:10:27,361 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:27,361 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-26 05:10:27,361 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L853 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~a~0 0) .cse0 (= ULTIMATE.start_main_~b~0 0) (<= 0 ~counter~0) (<= ~counter~0 0) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and (<= 2 ~counter~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (= ULTIMATE.start_main_~q~0 1)))) [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L853 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L860 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:27,362 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 41 42) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: false [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: false [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 51 52) the Hoare annotation is: false [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: false [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:27,363 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:27,364 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:27,364 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:10:27,364 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:27,366 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:10:27,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:10:27 BoogieIcfgContainer [2021-08-26 05:10:27,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:10:27,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:10:27,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:10:27,376 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:10:27,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:10:24" (3/4) ... [2021-08-26 05:10:27,378 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:10:27,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-08-26 05:10:27,385 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:10:27,385 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:10:27,385 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:10:27,409 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:10:27,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:10:27,410 INFO L168 Benchmark]: Toolchain (without parser) took 3625.54 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 37.7 MB in the beginning and 64.0 MB in the end (delta: -26.3 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:27,411 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:10:27,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.62 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 27.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:27,411 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.14 ms. Allocated memory is still 58.7 MB. Free memory was 27.6 MB in the beginning and 41.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:27,411 INFO L168 Benchmark]: Boogie Preprocessor took 12.74 ms. Allocated memory is still 58.7 MB. Free memory was 41.8 MB in the beginning and 40.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:27,411 INFO L168 Benchmark]: RCFGBuilder took 319.15 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 40.7 MB in the beginning and 53.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:27,412 INFO L168 Benchmark]: TraceAbstraction took 3062.49 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 53.5 MB in the beginning and 67.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:27,412 INFO L168 Benchmark]: Witness Printer took 33.40 ms. Allocated memory is still 88.1 MB. Free memory was 67.4 MB in the beginning and 64.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:27,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 144.62 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 27.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.14 ms. Allocated memory is still 58.7 MB. Free memory was 27.6 MB in the beginning and 41.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.74 ms. Allocated memory is still 58.7 MB. Free memory was 41.8 MB in the beginning and 40.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 319.15 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 40.7 MB in the beginning and 53.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3062.49 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 53.5 MB in the beginning and 67.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * Witness Printer took 33.40 ms. Allocated memory is still 88.1 MB. Free memory was 67.4 MB in the beginning and 64.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2992.4ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 15.7ms, AutomataDifference: 395.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 100.1ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 184 SDtfs, 261 SDslu, 228 SDs, 0 SdLazy, 157 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 248.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=4, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 113 HoareAnnotationTreeSize, 10 FomulaSimplifications, 93 FormulaSimplificationTreeSizeReduction, 22.1ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 73.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 46.4ms SsaConstructionTime, 97.4ms SatisfiabilityAnalysisTime, 612.8ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 307 SizeOfPredicates, 21 NumberOfNonLiveVariables, 479 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 3/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 <= cond) && 1 <= counter) && 1 <= y) && q == 0) && a == 1) && r == x) && b == y - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((cond == 1 && 1 <= cond) && 1 <= counter) && 1 <= y) && q == 0) && r == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((a == 0 && cond == 1) && b == 0) && 0 <= counter) && counter <= 0) && 1 <= y) && q == 0) && r == x) || (((((2 <= counter && x == r + y) && cond == 1) && 1 <= cond) && 1 <= y) && q == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((cond == 1 && 1 <= counter) && 1 <= y) && q == 0) && r == x RESULT: Ultimate proved your program to be correct! [2021-08-26 05:10:27,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...