./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.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 d888eae6e4d26e62ec30684193123aec1b361ab6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 12:44:39,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:44:39,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:44:39,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:44:39,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:44:39,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:44:39,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:44:39,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:44:39,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:44:39,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:44:39,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:44:39,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:44:39,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:44:39,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:44:39,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:44:39,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:44:39,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:44:39,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:44:39,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:44:39,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:44:39,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:44:39,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:44:39,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:44:39,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:44:39,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:44:39,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:44:39,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:44:39,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:44:39,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:44:39,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:44:39,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:44:39,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:44:39,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:44:39,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:44:39,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:44:39,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:44:39,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:44:39,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:44:39,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:44:39,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:44:39,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:44:39,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:44:39,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:44:39,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:44:39,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:44:39,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:44:39,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:44:39,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:44:39,150 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:44:39,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:44:39,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:44:39,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:44:39,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:44:39,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:44:39,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:44:39,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:44:39,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:44:39,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:44:39,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:44:39,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:44:39,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:44:39,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:44:39,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:44:39,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:44:39,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:44:39,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:44:39,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:44:39,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:44:39,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:44:39,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:44:39,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:44:39,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:44:39,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d888eae6e4d26e62ec30684193123aec1b361ab6 [2021-08-29 12:44:39,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:44:39,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:44:39,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:44:39,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:44:39,554 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:44:39,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2021-08-29 12:44:39,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c5b30b98/a1f18f5b0add4e62add12197a850f850/FLAGd54f84301 [2021-08-29 12:44:40,109 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:44:40,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2021-08-29 12:44:40,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c5b30b98/a1f18f5b0add4e62add12197a850f850/FLAGd54f84301 [2021-08-29 12:44:40,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c5b30b98/a1f18f5b0add4e62add12197a850f850 [2021-08-29 12:44:40,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:44:40,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:44:40,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:44:40,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:44:40,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:44:40,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae4f2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40, skipping insertion in model container [2021-08-29 12:44:40,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:44:40,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:44:40,737 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/egcd-ll_valuebound5.c[489,502] [2021-08-29 12:44:40,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:44:40,761 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:44:40,776 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/egcd-ll_valuebound5.c[489,502] [2021-08-29 12:44:40,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:44:40,813 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:44:40,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40 WrapperNode [2021-08-29 12:44:40,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:44:40,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:44:40,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:44:40,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:44:40,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:44:40,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:44:40,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:44:40,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:44:40,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:44:40,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:44:40,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:44:40,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:44:40,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (1/1) ... [2021-08-29 12:44:40,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:44:40,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:40,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 12:44:40,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 12:44:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:44:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:44:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:44:40,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:44:41,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:44:41,140 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-08-29 12:44:41,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:44:41 BoogieIcfgContainer [2021-08-29 12:44:41,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:44:41,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:44:41,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:44:41,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:44:41,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:44:40" (1/3) ... [2021-08-29 12:44:41,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e5931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:44:41, skipping insertion in model container [2021-08-29 12:44:41,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:44:40" (2/3) ... [2021-08-29 12:44:41,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e5931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:44:41, skipping insertion in model container [2021-08-29 12:44:41,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:44:41" (3/3) ... [2021-08-29 12:44:41,152 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2021-08-29 12:44:41,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:44:41,157 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-29 12:44:41,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:44:41,218 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 12:44:41,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-29 12:44:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 12:44:41,242 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:41,243 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:41,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:44:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:41,249 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-08-29 12:44:41,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:41,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186285858] [2021-08-29 12:44:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:41,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:41,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:41,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186285858] [2021-08-29 12:44:41,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186285858] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:44:41,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:44:41,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 12:44:41,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679330320] [2021-08-29 12:44:41,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 12:44:41,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 12:44:41,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:44:41,488 INFO L87 Difference]: Start difference. First operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:41,626 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-08-29 12:44:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 12:44:41,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-29 12:44:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:41,644 INFO L225 Difference]: With dead ends: 85 [2021-08-29 12:44:41,644 INFO L226 Difference]: Without dead ends: 40 [2021-08-29 12:44:41,647 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:44:41,650 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.71ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:41,650 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 117.71ms Time] [2021-08-29 12:44:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-29 12:44:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-29 12:44:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-08-29 12:44:41,703 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2021-08-29 12:44:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:41,704 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-08-29 12:44:41,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:41,704 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-08-29 12:44:41,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 12:44:41,705 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:41,705 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:41,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:44:41,707 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)] === [2021-08-29 12:44:41,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:41,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-08-29 12:44:41,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:41,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428230879] [2021-08-29 12:44:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:41,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:41,737 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:41,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709214062] [2021-08-29 12:44:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:41,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:41,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:41,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:41,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 12:44:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:41,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 12:44:41,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:41,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:44:41,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:41,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428230879] [2021-08-29 12:44:41,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:41,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709214062] [2021-08-29 12:44:41,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709214062] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:44:41,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:44:41,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:44:41,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452908752] [2021-08-29 12:44:41,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:44:41,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:41,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:44:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:44:41,989 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:42,110 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-08-29 12:44:42,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:44:42,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-29 12:44:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:42,112 INFO L225 Difference]: With dead ends: 70 [2021-08-29 12:44:42,112 INFO L226 Difference]: Without dead ends: 66 [2021-08-29 12:44:42,124 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:44:42,125 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.20ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:42,126 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 127 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 96.20ms Time] [2021-08-29 12:44:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-29 12:44:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2021-08-29 12:44:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.297872340425532) internal successors, (61), 53 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) [2021-08-29 12:44:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-08-29 12:44:42,134 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2021-08-29 12:44:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:42,134 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-08-29 12:44:42,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-08-29 12:44:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 12:44:42,135 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:42,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:42,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:42,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:42,362 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:44:42,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:42,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-08-29 12:44:42,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:42,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79125768] [2021-08-29 12:44:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:42,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:42,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:42,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421356738] [2021-08-29 12:44:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:42,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:42,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:42,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:42,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 12:44:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:42,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-29 12:44:42,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:42,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:44:42,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:42,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79125768] [2021-08-29 12:44:42,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:42,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421356738] [2021-08-29 12:44:42,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421356738] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:44:42,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:44:42,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-29 12:44:42,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291971523] [2021-08-29 12:44:42,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 12:44:42,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 12:44:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:44:42,715 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:42,982 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-08-29 12:44:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 12:44:42,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2021-08-29 12:44:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:42,984 INFO L225 Difference]: With dead ends: 66 [2021-08-29 12:44:42,984 INFO L226 Difference]: Without dead ends: 64 [2021-08-29 12:44:42,985 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 163.18ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-29 12:44:42,986 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 190 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.73ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:42,986 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 0 Invalid, 147 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 118.73ms Time] [2021-08-29 12:44:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-29 12:44:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-08-29 12:44:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2021-08-29 12:44:42,994 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 15 [2021-08-29 12:44:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:42,994 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2021-08-29 12:44:42,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2021-08-29 12:44:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 12:44:42,995 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:42,995 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:43,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:43,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 12:44:43,213 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:44:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:43,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-08-29 12:44:43,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:43,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752111619] [2021-08-29 12:44:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:43,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:43,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:43,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030200460] [2021-08-29 12:44:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:43,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:43,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:43,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:43,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:44:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:43,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-29 12:44:43,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:43,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:44:43,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:43,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752111619] [2021-08-29 12:44:43,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:43,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030200460] [2021-08-29 12:44:43,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030200460] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:44:43,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:44:43,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-29 12:44:43,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632993557] [2021-08-29 12:44:43,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 12:44:43,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:43,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 12:44:43,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:44:43,563 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-08-29 12:44:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:43,758 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-08-29 12:44:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 12:44:43,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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 [2021-08-29 12:44:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:43,764 INFO L225 Difference]: With dead ends: 100 [2021-08-29 12:44:43,764 INFO L226 Difference]: Without dead ends: 92 [2021-08-29 12:44:43,765 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 110.33ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-29 12:44:43,768 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.85ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:43,769 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 214 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 123.85ms Time] [2021-08-29 12:44:43,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-29 12:44:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2021-08-29 12:44:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 79 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2021-08-29 12:44:43,791 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 17 [2021-08-29 12:44:43,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:43,792 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2021-08-29 12:44:43,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-08-29 12:44:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2021-08-29 12:44:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 12:44:43,793 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:43,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:43,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:44,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:44,001 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:44:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:44,002 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2021-08-29 12:44:44,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:44,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160453285] [2021-08-29 12:44:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:44,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:44,013 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:44,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790452866] [2021-08-29 12:44:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:44,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:44,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:44,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:44,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 12:44:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:44,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 12:44:44,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:44,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:44:44,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:44,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160453285] [2021-08-29 12:44:44,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:44,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790452866] [2021-08-29 12:44:44,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790452866] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:44:44,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:44:44,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:44:44,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825559655] [2021-08-29 12:44:44,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:44:44,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:44:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:44:44,100 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:44,177 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-08-29 12:44:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:44:44,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-08-29 12:44:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:44,179 INFO L225 Difference]: With dead ends: 80 [2021-08-29 12:44:44,179 INFO L226 Difference]: Without dead ends: 78 [2021-08-29 12:44:44,180 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:44:44,180 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.46ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:44,180 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 65.46ms Time] [2021-08-29 12:44:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-29 12:44:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-29 12:44:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.25) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-08-29 12:44:44,199 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 20 [2021-08-29 12:44:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:44,199 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-08-29 12:44:44,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-08-29 12:44:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 12:44:44,200 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:44,200 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:44,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:44,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:44,423 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)] === [2021-08-29 12:44:44,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:44,424 INFO L82 PathProgramCache]: Analyzing trace with hash 598788611, now seen corresponding path program 1 times [2021-08-29 12:44:44,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:44,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671287416] [2021-08-29 12:44:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:44,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:44,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:44,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437386845] [2021-08-29 12:44:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:44,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:44,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:44,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:44,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 12:44:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:44,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 12:44:44,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 12:44:44,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:44:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 12:44:44,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:44,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671287416] [2021-08-29 12:44:44,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:44,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437386845] [2021-08-29 12:44:44,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437386845] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:44:44,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:44:44,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-08-29 12:44:44,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727773716] [2021-08-29 12:44:44,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 12:44:44,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 12:44:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:44:44,913 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:45,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:45,014 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-08-29 12:44:45,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:44:45,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 21 [2021-08-29 12:44:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:45,015 INFO L225 Difference]: With dead ends: 86 [2021-08-29 12:44:45,016 INFO L226 Difference]: Without dead ends: 80 [2021-08-29 12:44:45,016 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.74ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:44:45,017 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 83.16ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:45,017 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 159 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 38 Unchecked, 83.16ms Time] [2021-08-29 12:44:45,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-29 12:44:45,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2021-08-29 12:44:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-08-29 12:44:45,041 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2021-08-29 12:44:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:45,042 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-08-29 12:44:45,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-08-29 12:44:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 12:44:45,043 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:45,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:45,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:45,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:45,265 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:44:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2021-08-29 12:44:45,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:45,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659146742] [2021-08-29 12:44:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:45,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:45,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:45,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781321989] [2021-08-29 12:44:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:45,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:45,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:45,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:45,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 12:44:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:45,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 12:44:45,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:45,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:44:45,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:45,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659146742] [2021-08-29 12:44:45,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:45,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781321989] [2021-08-29 12:44:45,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781321989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:44:45,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:44:45,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 12:44:45,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777832257] [2021-08-29 12:44:45,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 12:44:45,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:45,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 12:44:45,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:44:45,428 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:45,568 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-08-29 12:44:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 12:44:45,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-29 12:44:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:45,569 INFO L225 Difference]: With dead ends: 80 [2021-08-29 12:44:45,569 INFO L226 Difference]: Without dead ends: 72 [2021-08-29 12:44:45,569 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 55.28ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:44:45,570 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.82ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:45,570 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 159 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [11 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 91.82ms Time] [2021-08-29 12:44:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-29 12:44:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-08-29 12:44:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2) internal successors, (78), 69 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-08-29 12:44:45,577 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2021-08-29 12:44:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:45,578 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-08-29 12:44:45,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-08-29 12:44:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-29 12:44:45,579 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:45,579 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:45,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:45,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:45,797 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:44:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2021-08-29 12:44:45,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:45,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483018099] [2021-08-29 12:44:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:45,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:45,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:45,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297500127] [2021-08-29 12:44:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:45,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:45,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:45,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:45,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-29 12:44:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:45,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-29 12:44:45,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:46,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:44:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:46,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:46,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483018099] [2021-08-29 12:44:46,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:46,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297500127] [2021-08-29 12:44:46,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297500127] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:44:46,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:44:46,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:44:46,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934459407] [2021-08-29 12:44:46,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:44:46,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:44:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:44:46,151 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:46,638 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2021-08-29 12:44:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:44:46,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 23 [2021-08-29 12:44:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:46,639 INFO L225 Difference]: With dead ends: 98 [2021-08-29 12:44:46,639 INFO L226 Difference]: Without dead ends: 82 [2021-08-29 12:44:46,640 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 81.58ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-29 12:44:46,640 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 387.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.37ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 417.08ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:46,640 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 214 Unknown, 0 Unchecked, 1.37ms Time], IncrementalHoareTripleChecker [25 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 417.08ms Time] [2021-08-29 12:44:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-29 12:44:46,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 52. [2021-08-29 12:44:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-08-29 12:44:46,647 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 23 [2021-08-29 12:44:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:46,647 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-08-29 12:44:46,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:44:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-08-29 12:44:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-29 12:44:46,648 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:44:46,648 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:44:46,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:46,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:46,861 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 12:44:46,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:44:46,861 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2021-08-29 12:44:46,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:44:46,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132287445] [2021-08-29 12:44:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:46,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:44:46,870 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:44:46,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950686299] [2021-08-29 12:44:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:44:46,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:44:46,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:44:46,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:44:46,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-29 12:44:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:44:46,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-29 12:44:46,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:44:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:44:47,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:44:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-29 12:44:47,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:44:47,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132287445] [2021-08-29 12:44:47,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:44:47,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950686299] [2021-08-29 12:44:47,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950686299] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:44:47,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:44:47,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2021-08-29 12:44:47,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682997607] [2021-08-29 12:44:47,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:44:47,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:44:47,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:44:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:44:47,248 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2021-08-29 12:44:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:44:47,411 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-08-29 12:44:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 12:44:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) Word has length 29 [2021-08-29 12:44:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:44:47,412 INFO L225 Difference]: With dead ends: 74 [2021-08-29 12:44:47,412 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 12:44:47,412 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 67.84ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:44:47,413 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.81ms IncrementalHoareTripleChecker+Time [2021-08-29 12:44:47,413 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 198 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [5 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 111.81ms Time] [2021-08-29 12:44:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 12:44:47,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 12:44:47,413 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) [2021-08-29 12:44:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 12:44:47,414 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-08-29 12:44:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:44:47,414 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 12:44:47,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2021-08-29 12:44:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 12:44:47,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 12:44:47,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-08-29 12:44:47,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-08-29 12:44:47,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-08-29 12:44:47,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-08-29 12:44:47,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-08-29 12:44:47,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-08-29 12:44:47,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-08-29 12:44:47,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-29 12:44:47,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-29 12:44:47,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 12:44:47,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:47,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:47,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:47,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:47,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:47,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:47,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:47,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:47,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:44:53,998 INFO L858 garLoopResultBuilder]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2021-08-29 12:44:53,998 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:44:53,998 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:44:53,999 INFO L854 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~x~0 5) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse0 .cse1)) (<= ULTIMATE.start_main_~y~0 5) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ .cse0 .cse1)))) [2021-08-29 12:44:53,999 INFO L858 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:44:53,999 INFO L854 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~x~0 5) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse0 .cse1)) (<= ULTIMATE.start_main_~y~0 5) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ .cse0 .cse1)))) [2021-08-29 12:44:53,999 INFO L858 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:44:53,999 INFO L854 garLoopResultBuilder]: At program point L11-8(lines 40 41) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~x~0 5) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse0 .cse1)) (<= ULTIMATE.start_main_~y~0 5) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ .cse0 .cse1)))) [2021-08-29 12:44:53,999 INFO L858 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:44:54,000 INFO L854 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~x~0 5) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse0 .cse1)) (<= ULTIMATE.start_main_~y~0 5) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ .cse0 .cse1)))) [2021-08-29 12:44:54,000 INFO L858 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:44:54,000 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:44:54,000 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 12:44:54,000 INFO L854 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 5)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (<= ULTIMATE.start_main_~y~0 5)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_main_~s~0 1)) (.cse7 (<= 1 ULTIMATE.start_main_~x~0)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~r~0 0) .cse6 .cse7 .cse8) (let ((.cse9 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse10 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (and .cse0 .cse1 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse9 .cse10)) .cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 .cse7 .cse11 (= ULTIMATE.start_main_~b~0 (+ .cse9 .cse10)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse11 .cse8))) [2021-08-29 12:44:54,000 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 12:44:54,001 INFO L858 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:44:54,001 INFO L854 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 5)) (.cse4 (<= ULTIMATE.start_main_~y~0 5)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0))) (or (let ((.cse2 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (and .cse0 .cse1 (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse2 .cse3)) .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ .cse2 .cse3)))) (and .cse0 .cse1 .cse4 .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~s~0 1) .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-08-29 12:44:54,001 INFO L858 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:44:54,001 INFO L861 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-08-29 12:44:54,001 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:44:54,001 INFO L858 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:44:54,002 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:44:54,002 INFO L858 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:44:54,002 INFO L858 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:44:54,002 INFO L858 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:44:54,002 INFO L858 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:44:54,002 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:44:54,002 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:44:54,003 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:44:54,003 INFO L858 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-29 12:44:54,003 INFO L858 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-29 12:44:54,003 INFO L858 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-08-29 12:44:54,003 INFO L858 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-08-29 12:44:54,003 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 12:44:54,003 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:44:54,004 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-29 12:44:54,004 INFO L858 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-29 12:44:54,004 INFO L858 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-08-29 12:44:54,004 INFO L858 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-08-29 12:44:54,004 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 12:44:54,004 INFO L861 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2021-08-29 12:44:54,004 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:44:54,004 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2021-08-29 12:44:54,005 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse2 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 5)) (.cse4 (<= ULTIMATE.start_main_~y~0 5)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~a~0 (+ .cse2 .cse3)))) (or (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse2 .cse3)) .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse4 .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse6 .cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) [2021-08-29 12:44:54,009 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:44:54,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:44:54 BoogieIcfgContainer [2021-08-29 12:44:54,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:44:54,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:44:54,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:44:54,028 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:44:54,029 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:44:41" (3/4) ... [2021-08-29 12:44:54,031 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 12:44:54,040 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-08-29 12:44:54,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 12:44:54,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:44:54,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:44:54,084 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:44:54,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:44:54,085 INFO L158 Benchmark]: Toolchain (without parser) took 13495.59ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 54.4MB in the beginning and 64.7MB in the end (delta: -10.2MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-08-29 12:44:54,085 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 71.2MB in the beginning and 71.1MB in the end (delta: 73.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:44:54,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.45ms. Allocated memory is still 88.1MB. Free memory was 54.2MB in the beginning and 72.3MB in the end (delta: -18.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-08-29 12:44:54,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.70ms. Allocated memory is still 88.1MB. Free memory was 72.1MB in the beginning and 70.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:44:54,086 INFO L158 Benchmark]: Boogie Preprocessor took 26.17ms. Allocated memory is still 88.1MB. Free memory was 70.5MB in the beginning and 69.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:44:54,086 INFO L158 Benchmark]: RCFGBuilder took 246.97ms. Allocated memory is still 88.1MB. Free memory was 69.3MB in the beginning and 59.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 12:44:54,087 INFO L158 Benchmark]: TraceAbstraction took 12882.99ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 59.0MB in the beginning and 67.8MB in the end (delta: -8.8MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2021-08-29 12:44:54,088 INFO L158 Benchmark]: Witness Printer took 56.22ms. Allocated memory is still 107.0MB. Free memory was 67.8MB in the beginning and 64.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:44:54,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 71.2MB in the beginning and 71.1MB in the end (delta: 73.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.45ms. Allocated memory is still 88.1MB. Free memory was 54.2MB in the beginning and 72.3MB in the end (delta: -18.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.70ms. Allocated memory is still 88.1MB. Free memory was 72.1MB in the beginning and 70.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.17ms. Allocated memory is still 88.1MB. Free memory was 70.5MB in the beginning and 69.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.97ms. Allocated memory is still 88.1MB. Free memory was 69.3MB in the beginning and 59.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12882.99ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 59.0MB in the beginning and 67.8MB in the end (delta: -8.8MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * Witness Printer took 56.22ms. Allocated memory is still 107.0MB. Free memory was 67.8MB in the beginning and 64.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 44 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 12802.06ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 17.51ms, AutomataDifference: 1807.85ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 6360.23ms, InitialAbstractionConstructionTime: 11.54ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 436 SdHoareTripleChecker+Valid, 1225.83ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 436 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 997.09ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 38 IncrementalHoareTripleChecker+Unchecked, 470 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1263 IncrementalHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 0 mSDtfsCounter, 1263 mSolverCounterSat, 15.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 186 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 615.33ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=4, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 114.75ms AutomataMinimizationTime, 9 MinimizatonAttempts, 74 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 47 NumberOfFragments, 510 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1580 FormulaSimplificationTreeSizeReduction, 147.25ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 1388 FormulaSimplificationTreeSizeReductionInter, 6205.76ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 64.57ms SsaConstructionTime, 171.24ms SatisfiabilityAnalysisTime, 1981.25ms InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 234 ConstructedInterpolants, 9 QuantifiedInterpolants, 1483 SizeOfPredicates, 57 NumberOfNonLiveVariables, 775 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 12/36 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((cond == 1 && x <= 5) && a + s * y + q * x == b + r * y + p * x) && y <= 5) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x) || (((((((cond == 1 && x <= 5) && y <= 5) && 1 <= y) && q == 0) && s == 1) && 1 <= x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((cond == 1 && x <= 5) && q * r + 1 == p * s) && a + s * y + q * x == b + r * y + p * x) && y <= 5) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && x <= 5) && 1 <= cond) && q * r + 1 == p * s) && a + s * y + q * x == b + r * y + p * x) && y <= 5) && 1 <= y) && 1 <= x) && a == r * y + p * x) || ((((((((((cond == 1 && x <= 5) && p == 1) && y <= 5) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((cond == 1 && x <= 5) && 1 <= cond) && q * r + 1 == p * s) && a + s * y + q * x == b + r * y + p * x) && y <= 5) && 1 <= y) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && x <= 5) && q * r + 1 == p * s) && a + s * y + q * x == b + r * y + p * x) && y <= 5) && 1 == cond) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && a == x) && x <= 5) && p == 1) && y <= 5) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && b == y) || (((((((((cond == 1 && x <= 5) && q * r + 1 == p * s) && a + s * y + q * x == b + r * y + p * x) && y <= 5) && 1 == cond) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x)) || (((((((((cond == 1 && x <= 5) && p == 1) && y <= 5) && 1 <= y) && q == 0) && s == 1) && 1 <= x) && b == a) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((cond == 1 && x <= 5) && 1 <= cond) && q * r + 1 == p * s) && a + s * y + q * x == b + r * y + p * x) && y <= 5) && 1 <= y) && 1 <= x) && a == r * y + p * x RESULT: Ultimate proved your program to be correct! [2021-08-29 12:44:54,133 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...