./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.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 a977b022b43b9a8549ddd4aa535fee7d8f5173c1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 05:58:35,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:58:35,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:58:35,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:58:35,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:58:35,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:58:35,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:58:35,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:58:35,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:58:35,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:58:35,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:58:35,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:58:35,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:58:35,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:58:35,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:58:35,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:58:35,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:58:35,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:58:35,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:58:35,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:58:35,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:58:35,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:58:35,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:58:35,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:58:35,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:58:35,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:58:35,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:58:35,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:58:35,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:58:35,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:58:35,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:58:35,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:58:35,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:58:35,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:58:35,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:58:35,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:58:35,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:58:35,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:58:35,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:58:35,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:58:35,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:58:35,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:58:35,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:58:35,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:58:35,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:58:35,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:58:35,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:58:35,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:58:35,786 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:58:35,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:58:35,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:58:35,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:58:35,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:58:35,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:58:35,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:58:35,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:58:35,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:58:35,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:58:35,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:58:35,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:58:35,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:58:35,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:58:35,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:58:35,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:58:35,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:58:35,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:58:35,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:58:35,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:58:35,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:58:35,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:58:35,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:58:35,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:58:35,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a977b022b43b9a8549ddd4aa535fee7d8f5173c1 [2021-08-26 05:58:36,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:58:36,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:58:36,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:58:36,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:58:36,105 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:58:36,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2021-08-26 05:58:36,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6be5e44/f215cc0076b248ac93451a1f4b8c942b/FLAGdec253cd7 [2021-08-26 05:58:36,511 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:58:36,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2021-08-26 05:58:36,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6be5e44/f215cc0076b248ac93451a1f4b8c942b/FLAGdec253cd7 [2021-08-26 05:58:36,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6be5e44/f215cc0076b248ac93451a1f4b8c942b [2021-08-26 05:58:36,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:58:36,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:58:36,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:58:36,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:58:36,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:58:36,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:58:36" (1/1) ... [2021-08-26 05:58:36,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8e5b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:36, skipping insertion in model container [2021-08-26 05:58:36,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:58:36" (1/1) ... [2021-08-26 05:58:36,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:58:36,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:58:37,034 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/egcd2-ll_valuebound2.c[490,503] [2021-08-26 05:58:37,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:58:37,058 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:58:37,068 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/egcd2-ll_valuebound2.c[490,503] [2021-08-26 05:58:37,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:58:37,090 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:58:37,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37 WrapperNode [2021-08-26 05:58:37,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:58:37,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:58:37,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:58:37,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:58:37,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:58:37,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:58:37,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:58:37,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:58:37,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:58:37,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:58:37,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:58:37,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:58:37,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (1/1) ... [2021-08-26 05:58:37,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:58:37,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:37,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 05:58:37,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 05:58:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:58:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:58:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:58:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:58:37,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:58:37,548 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-08-26 05:58:37,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:58:37 BoogieIcfgContainer [2021-08-26 05:58:37,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:58:37,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:58:37,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:58:37,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:58:37,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:58:36" (1/3) ... [2021-08-26 05:58:37,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f73982a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:58:37, skipping insertion in model container [2021-08-26 05:58:37,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:58:37" (2/3) ... [2021-08-26 05:58:37,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f73982a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:58:37, skipping insertion in model container [2021-08-26 05:58:37,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:58:37" (3/3) ... [2021-08-26 05:58:37,557 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2021-08-26 05:58:37,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:58:37,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 05:58:37,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:58:37,601 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 05:58:37,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 05:58:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 05:58:37,617 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:37,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:37,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:37,623 INFO L82 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2021-08-26 05:58:37,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:37,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128645699] [2021-08-26 05:58:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:37,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:37,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:37,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128645699] [2021-08-26 05:58:37,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128645699] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:58:37,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:58:37,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:58:37,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551624981] [2021-08-26 05:58:37,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:58:37,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:37,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:58:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:58:37,864 INFO L87 Difference]: Start difference. First operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 states have internal predecessors, (62), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:37,886 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2021-08-26 05:58:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:58:37,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 05:58:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:37,896 INFO L225 Difference]: With dead ends: 87 [2021-08-26 05:58:37,896 INFO L226 Difference]: Without dead ends: 41 [2021-08-26 05:58:37,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:58:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-26 05:58:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-08-26 05:58:37,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:37,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-08-26 05:58:37,927 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2021-08-26 05:58:37,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:37,928 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-08-26 05:58:37,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-08-26 05:58:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 05:58:37,931 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:37,931 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:37,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:58:37,932 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2021-08-26 05:58:37,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:37,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56179905] [2021-08-26 05:58:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:37,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:37,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:37,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206491176] [2021-08-26 05:58:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:37,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:37,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:37,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:38,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 05:58:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:38,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:58:38,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:38,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:38,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56179905] [2021-08-26 05:58:38,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:38,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206491176] [2021-08-26 05:58:38,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206491176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:58:38,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:58:38,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 05:58:38,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192504393] [2021-08-26 05:58:38,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:58:38,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:58:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:58:38,255 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:38,379 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-08-26 05:58:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:58:38,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 05:58:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:38,382 INFO L225 Difference]: With dead ends: 69 [2021-08-26 05:58:38,382 INFO L226 Difference]: Without dead ends: 61 [2021-08-26 05:58:38,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:58:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-26 05:58:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2021-08-26 05:58:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-08-26 05:58:38,400 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2021-08-26 05:58:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:38,401 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-08-26 05:58:38,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-08-26 05:58:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 05:58:38,402 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:38,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:38,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:38,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:38,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2021-08-26 05:58:38,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:38,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856820503] [2021-08-26 05:58:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:38,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:38,641 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:38,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738999516] [2021-08-26 05:58:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:38,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:38,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:38,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 05:58:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:38,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 05:58:38,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:38,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:38,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856820503] [2021-08-26 05:58:38,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:38,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738999516] [2021-08-26 05:58:38,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738999516] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:58:38,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:58:38,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 05:58:38,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051789483] [2021-08-26 05:58:38,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:58:38,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:38,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:58:38,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:58:38,904 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:39,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:39,039 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-08-26 05:58:39,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:58:39,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 05:58:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:39,040 INFO L225 Difference]: With dead ends: 79 [2021-08-26 05:58:39,040 INFO L226 Difference]: Without dead ends: 77 [2021-08-26 05:58:39,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:58:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-26 05:58:39,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2021-08-26 05:58:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-08-26 05:58:39,046 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2021-08-26 05:58:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:39,047 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-08-26 05:58:39,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-08-26 05:58:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 05:58:39,048 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:39,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:39,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:39,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 05:58:39,265 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:39,266 INFO L82 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2021-08-26 05:58:39,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:39,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964414295] [2021-08-26 05:58:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:39,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:39,280 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:39,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449492202] [2021-08-26 05:58:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:39,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:39,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:39,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:39,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 05:58:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:39,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:58:39,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:39,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:39,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964414295] [2021-08-26 05:58:39,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:39,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449492202] [2021-08-26 05:58:39,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449492202] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:58:39,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:58:39,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-26 05:58:39,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048389057] [2021-08-26 05:58:39,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 05:58:39,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 05:58:39,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:58:39,981 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2021-08-26 05:58:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:40,292 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-08-26 05:58:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 05:58:40,292 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 [2021-08-26 05:58:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:40,293 INFO L225 Difference]: With dead ends: 63 [2021-08-26 05:58:40,293 INFO L226 Difference]: Without dead ends: 61 [2021-08-26 05:58:40,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 299.6ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-08-26 05:58:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-26 05:58:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-08-26 05:58:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-08-26 05:58:40,299 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2021-08-26 05:58:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:40,300 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-08-26 05:58:40,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2021-08-26 05:58:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-08-26 05:58:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 05:58:40,300 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:40,301 INFO L512 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] [2021-08-26 05:58:40,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:40,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:40,523 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:40,524 INFO L82 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2021-08-26 05:58:40,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:40,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529094157] [2021-08-26 05:58:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:40,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:40,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:40,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376354718] [2021-08-26 05:58:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:40,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:40,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:40,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:40,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 05:58:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:40,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-26 05:58:40,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:41,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:41,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529094157] [2021-08-26 05:58:41,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:41,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376354718] [2021-08-26 05:58:41,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376354718] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:58:41,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:58:41,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-26 05:58:41,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240687633] [2021-08-26 05:58:41,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 05:58:41,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:41,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 05:58:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:58:41,369 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2021-08-26 05:58:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:41,693 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-08-26 05:58:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 05:58:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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 [2021-08-26 05:58:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:41,703 INFO L225 Difference]: With dead ends: 61 [2021-08-26 05:58:41,703 INFO L226 Difference]: Without dead ends: 59 [2021-08-26 05:58:41,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 345.6ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-08-26 05:58:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-26 05:58:41,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2021-08-26 05:58:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 53 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) [2021-08-26 05:58:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-08-26 05:58:41,712 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2021-08-26 05:58:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:41,712 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-08-26 05:58:41,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2021-08-26 05:58:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-08-26 05:58:41,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 05:58:41,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:41,713 INFO L512 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, 1, 1] [2021-08-26 05:58:41,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:41,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:41,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2021-08-26 05:58:41,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:41,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398524033] [2021-08-26 05:58:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:41,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:41,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:41,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903675546] [2021-08-26 05:58:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:41,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:41,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:41,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:41,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 05:58:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:42,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:58:42,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:42,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:42,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398524033] [2021-08-26 05:58:42,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:42,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903675546] [2021-08-26 05:58:42,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903675546] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:58:42,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:58:42,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 05:58:42,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843849287] [2021-08-26 05:58:42,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:58:42,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:58:42,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:58:42,443 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:42,504 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-08-26 05:58:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:58:42,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 24 [2021-08-26 05:58:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:42,505 INFO L225 Difference]: With dead ends: 63 [2021-08-26 05:58:42,505 INFO L226 Difference]: Without dead ends: 61 [2021-08-26 05:58:42,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:58:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-26 05:58:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-08-26 05:58:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1875) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-08-26 05:58:42,510 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2021-08-26 05:58:42,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:42,511 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-08-26 05:58:42,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-08-26 05:58:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 05:58:42,512 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:42,512 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:42,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:42,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:42,721 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:42,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2021-08-26 05:58:42,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:42,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529438722] [2021-08-26 05:58:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:42,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:42,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:42,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565292589] [2021-08-26 05:58:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:42,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:42,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:42,756 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:42,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 05:58:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:42,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 05:58:42,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:43,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:43,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529438722] [2021-08-26 05:58:43,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:43,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565292589] [2021-08-26 05:58:43,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565292589] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:43,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:43,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:58:43,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752563651] [2021-08-26 05:58:43,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:58:43,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:58:43,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:58:43,195 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:43,362 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2021-08-26 05:58:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:58:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2021-08-26 05:58:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:43,365 INFO L225 Difference]: With dead ends: 77 [2021-08-26 05:58:43,365 INFO L226 Difference]: Without dead ends: 75 [2021-08-26 05:58:43,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-08-26 05:58:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-08-26 05:58:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-08-26 05:58:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-08-26 05:58:43,373 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 27 [2021-08-26 05:58:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:43,374 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-08-26 05:58:43,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-08-26 05:58:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 05:58:43,375 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:43,375 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:43,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:43,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:43,593 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2021-08-26 05:58:43,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:43,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861245893] [2021-08-26 05:58:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:43,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:43,615 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:43,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35590206] [2021-08-26 05:58:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:43,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:43,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:43,620 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) [2021-08-26 05:58:43,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 05:58:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:43,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 05:58:43,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:43,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:43,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861245893] [2021-08-26 05:58:43,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:43,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35590206] [2021-08-26 05:58:43,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35590206] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:43,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:43,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:58:43,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109849431] [2021-08-26 05:58:43,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:58:43,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:43,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:58:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:58:43,981 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:44,139 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2021-08-26 05:58:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:58:44,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 30 [2021-08-26 05:58:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:44,141 INFO L225 Difference]: With dead ends: 154 [2021-08-26 05:58:44,141 INFO L226 Difference]: Without dead ends: 146 [2021-08-26 05:58:44,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.1ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:58:44,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-26 05:58:44,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 96. [2021-08-26 05:58:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.288888888888889) internal successors, (116), 95 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2021-08-26 05:58:44,151 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 30 [2021-08-26 05:58:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:44,152 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2021-08-26 05:58:44,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2021-08-26 05:58:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 05:58:44,153 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:44,153 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:44,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:44,368 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 [2021-08-26 05:58:44,369 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:44,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1655371511, now seen corresponding path program 1 times [2021-08-26 05:58:44,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:44,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434175239] [2021-08-26 05:58:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:44,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:44,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:44,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907731780] [2021-08-26 05:58:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:44,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:44,391 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) [2021-08-26 05:58:44,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 05:58:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:44,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 05:58:44,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:44,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:44,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434175239] [2021-08-26 05:58:44,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:44,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907731780] [2021-08-26 05:58:44,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907731780] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:44,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:44,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 05:58:44,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562089675] [2021-08-26 05:58:44,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:58:44,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:58:44,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:58:44,790 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:45,025 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2021-08-26 05:58:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:58:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 30 [2021-08-26 05:58:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:45,028 INFO L225 Difference]: With dead ends: 147 [2021-08-26 05:58:45,028 INFO L226 Difference]: Without dead ends: 145 [2021-08-26 05:58:45,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-08-26 05:58:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-26 05:58:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2021-08-26 05:58:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 95 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2021-08-26 05:58:45,048 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 30 [2021-08-26 05:58:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:45,048 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2021-08-26 05:58:45,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2021-08-26 05:58:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 05:58:45,049 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:45,049 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:45,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-08-26 05:58:45,260 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 [2021-08-26 05:58:45,261 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:45,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:45,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2021-08-26 05:58:45,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:45,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022511383] [2021-08-26 05:58:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:45,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:45,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:45,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887292678] [2021-08-26 05:58:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:45,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:45,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:45,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:45,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 05:58:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:45,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 05:58:45,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:45,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:45,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022511383] [2021-08-26 05:58:45,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:45,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887292678] [2021-08-26 05:58:45,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887292678] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:45,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:45,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:58:45,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043339258] [2021-08-26 05:58:45,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:58:45,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:58:45,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:58:45,726 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:45,867 INFO L93 Difference]: Finished difference Result 150 states and 178 transitions. [2021-08-26 05:58:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:58:45,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 32 [2021-08-26 05:58:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:45,874 INFO L225 Difference]: With dead ends: 150 [2021-08-26 05:58:45,874 INFO L226 Difference]: Without dead ends: 144 [2021-08-26 05:58:45,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:58:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-08-26 05:58:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2021-08-26 05:58:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.296) internal successors, (162), 130 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2021-08-26 05:58:45,894 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 32 [2021-08-26 05:58:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:45,894 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2021-08-26 05:58:45,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2021-08-26 05:58:45,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-26 05:58:45,897 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:45,897 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:45,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:46,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 05:58:46,113 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:46,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:46,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2021-08-26 05:58:46,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:46,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592440845] [2021-08-26 05:58:46,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:46,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:46,122 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:46,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60236461] [2021-08-26 05:58:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:46,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:46,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:46,123 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:46,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 05:58:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:46,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-26 05:58:46,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:47,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:47,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592440845] [2021-08-26 05:58:47,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:47,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60236461] [2021-08-26 05:58:47,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60236461] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:47,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:47,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 05:58:47,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076214151] [2021-08-26 05:58:47,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 05:58:47,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 05:58:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:58:47,410 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:47,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:47,729 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2021-08-26 05:58:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 05:58:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 34 [2021-08-26 05:58:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:47,731 INFO L225 Difference]: With dead ends: 141 [2021-08-26 05:58:47,732 INFO L226 Difference]: Without dead ends: 139 [2021-08-26 05:58:47,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 300.3ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-08-26 05:58:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-26 05:58:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2021-08-26 05:58:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.28) internal successors, (160), 130 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2021-08-26 05:58:47,742 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 34 [2021-08-26 05:58:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:47,743 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2021-08-26 05:58:47,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2021-08-26 05:58:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 05:58:47,744 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:47,744 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:47,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:47,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-26 05:58:47,957 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:47,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2021-08-26 05:58:47,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:47,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999341243] [2021-08-26 05:58:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:47,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:47,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:47,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133517075] [2021-08-26 05:58:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:47,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:47,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:47,971 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:47,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 05:58:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:48,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-26 05:58:48,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:49,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:49,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999341243] [2021-08-26 05:58:49,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:49,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133517075] [2021-08-26 05:58:49,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133517075] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:49,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:49,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:58:49,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121463067] [2021-08-26 05:58:49,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:58:49,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:58:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:58:49,068 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:49,229 INFO L93 Difference]: Finished difference Result 146 states and 173 transitions. [2021-08-26 05:58:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:58:49,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-26 05:58:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:49,230 INFO L225 Difference]: With dead ends: 146 [2021-08-26 05:58:49,230 INFO L226 Difference]: Without dead ends: 144 [2021-08-26 05:58:49,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:58:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-08-26 05:58:49,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2021-08-26 05:58:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.264) internal successors, (158), 130 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2021-08-26 05:58:49,240 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 36 [2021-08-26 05:58:49,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:49,240 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2021-08-26 05:58:49,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:49,241 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2021-08-26 05:58:49,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 05:58:49,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:49,241 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:49,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:49,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 05:58:49,457 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:49,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2021-08-26 05:58:49,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:49,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463442254] [2021-08-26 05:58:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:49,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:49,466 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:49,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789457043] [2021-08-26 05:58:49,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:58:49,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:49,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:49,469 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:49,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 05:58:49,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:58:49,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:58:49,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-26 05:58:49,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:50,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:50,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463442254] [2021-08-26 05:58:50,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:50,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789457043] [2021-08-26 05:58:50,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789457043] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:50,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:50,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 05:58:50,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315257002] [2021-08-26 05:58:50,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 05:58:50,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 05:58:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:58:50,559 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:50,980 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2021-08-26 05:58:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 05:58:50,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-26 05:58:50,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:50,982 INFO L225 Difference]: With dead ends: 190 [2021-08-26 05:58:50,982 INFO L226 Difference]: Without dead ends: 139 [2021-08-26 05:58:50,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 358.4ms TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-08-26 05:58:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-26 05:58:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-08-26 05:58:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 137 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2021-08-26 05:58:50,994 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 36 [2021-08-26 05:58:50,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:50,994 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2021-08-26 05:58:50,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2021-08-26 05:58:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 05:58:50,996 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:50,997 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:51,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:51,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-26 05:58:51,222 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1507131103, now seen corresponding path program 1 times [2021-08-26 05:58:51,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:51,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211502047] [2021-08-26 05:58:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:51,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:51,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:51,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505436793] [2021-08-26 05:58:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:51,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:51,234 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:51,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 05:58:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:51,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 05:58:51,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:52,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:52,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211502047] [2021-08-26 05:58:52,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:52,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505436793] [2021-08-26 05:58:52,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505436793] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:52,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:52,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 05:58:52,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622732049] [2021-08-26 05:58:52,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 05:58:52,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 05:58:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:58:52,139 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:52,570 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2021-08-26 05:58:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 05:58:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 39 [2021-08-26 05:58:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:52,571 INFO L225 Difference]: With dead ends: 154 [2021-08-26 05:58:52,572 INFO L226 Difference]: Without dead ends: 152 [2021-08-26 05:58:52,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 332.9ms TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-08-26 05:58:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-26 05:58:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2021-08-26 05:58:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 139 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2021-08-26 05:58:52,585 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 39 [2021-08-26 05:58:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:52,585 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2021-08-26 05:58:52,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2021-08-26 05:58:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 05:58:52,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:52,588 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:52,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:52,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-26 05:58:52,809 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:52,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:52,809 INFO L82 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2021-08-26 05:58:52,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:52,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190975270] [2021-08-26 05:58:52,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:52,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:52,817 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:52,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730135083] [2021-08-26 05:58:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:52,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:52,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:52,819 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:52,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 05:58:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:53,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 44 conjunts are in the unsatisfiable core [2021-08-26 05:58:53,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:54,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:54,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190975270] [2021-08-26 05:58:54,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:54,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730135083] [2021-08-26 05:58:54,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730135083] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:54,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:54,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 05:58:54,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802428946] [2021-08-26 05:58:54,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 05:58:54,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:54,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 05:58:54,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:58:54,346 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:54,874 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2021-08-26 05:58:54,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 05:58:54,874 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 39 [2021-08-26 05:58:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:54,875 INFO L225 Difference]: With dead ends: 163 [2021-08-26 05:58:54,875 INFO L226 Difference]: Without dead ends: 157 [2021-08-26 05:58:54,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 329.2ms TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-08-26 05:58:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-08-26 05:58:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2021-08-26 05:58:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.2397260273972603) internal successors, (181), 151 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2021-08-26 05:58:54,888 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 39 [2021-08-26 05:58:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:54,889 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2021-08-26 05:58:54,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2021-08-26 05:58:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 05:58:54,890 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:54,891 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:54,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:55,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:55,105 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:55,105 INFO L82 PathProgramCache]: Analyzing trace with hash -50682455, now seen corresponding path program 2 times [2021-08-26 05:58:55,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:55,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540473032] [2021-08-26 05:58:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:55,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:55,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:55,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550144964] [2021-08-26 05:58:55,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:58:55,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:55,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:55,148 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:55,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 05:58:55,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-26 05:58:55,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:58:55,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 05:58:55,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-26 05:58:55,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:55,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540473032] [2021-08-26 05:58:55,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:55,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550144964] [2021-08-26 05:58:55,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550144964] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:58:55,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:58:55,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:58:55,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638656935] [2021-08-26 05:58:55,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:58:55,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:58:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:58:55,835 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:55,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:55,886 INFO L93 Difference]: Finished difference Result 188 states and 225 transitions. [2021-08-26 05:58:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:58:55,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 39 [2021-08-26 05:58:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:55,887 INFO L225 Difference]: With dead ends: 188 [2021-08-26 05:58:55,887 INFO L226 Difference]: Without dead ends: 186 [2021-08-26 05:58:55,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:58:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-08-26 05:58:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 158. [2021-08-26 05:58:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 157 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2021-08-26 05:58:55,900 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 39 [2021-08-26 05:58:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:55,900 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2021-08-26 05:58:55,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2021-08-26 05:58:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 05:58:55,901 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:55,901 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:55,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-08-26 05:58:56,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-26 05:58:56,117 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:56,117 INFO L82 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2021-08-26 05:58:56,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:56,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660877718] [2021-08-26 05:58:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:56,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:56,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:56,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244528189] [2021-08-26 05:58:56,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:58:56,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:56,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:56,127 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:56,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 05:58:56,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:58:56,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:58:56,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 05:58:56,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:56,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:56,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660877718] [2021-08-26 05:58:56,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:56,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244528189] [2021-08-26 05:58:56,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244528189] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:58:56,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:58:56,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 05:58:56,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120801801] [2021-08-26 05:58:56,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:58:56,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:58:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:58:56,838 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:56,923 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2021-08-26 05:58:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:58:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-08-26 05:58:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:56,924 INFO L225 Difference]: With dead ends: 227 [2021-08-26 05:58:56,924 INFO L226 Difference]: Without dead ends: 164 [2021-08-26 05:58:56,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:58:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-08-26 05:58:56,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 146. [2021-08-26 05:58:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 140 states have (on average 1.1785714285714286) internal successors, (165), 145 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2021-08-26 05:58:56,937 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 44 [2021-08-26 05:58:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:56,938 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2021-08-26 05:58:56,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2021-08-26 05:58:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:58:56,938 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:56,939 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:56,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:57,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-26 05:58:57,164 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash 75787250, now seen corresponding path program 1 times [2021-08-26 05:58:57,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:57,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841449188] [2021-08-26 05:58:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:57,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:57,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:57,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121647742] [2021-08-26 05:58:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:57,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:57,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:57,180 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:57,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 05:58:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:58:57,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 05:58:57,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:58,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:58,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841449188] [2021-08-26 05:58:58,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:58,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121647742] [2021-08-26 05:58:58,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121647742] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:58,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:58,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 05:58:58,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296083953] [2021-08-26 05:58:58,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:58:58,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:58:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:58:58,043 INFO L87 Difference]: Start difference. First operand 146 states and 165 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:58:58,222 INFO L93 Difference]: Finished difference Result 183 states and 206 transitions. [2021-08-26 05:58:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 05:58:58,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 45 [2021-08-26 05:58:58,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:58:58,223 INFO L225 Difference]: With dead ends: 183 [2021-08-26 05:58:58,223 INFO L226 Difference]: Without dead ends: 125 [2021-08-26 05:58:58,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-08-26 05:58:58,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-26 05:58:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-08-26 05:58:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 124 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 139 transitions. [2021-08-26 05:58:58,234 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 139 transitions. Word has length 45 [2021-08-26 05:58:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:58:58,234 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 139 transitions. [2021-08-26 05:58:58,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:58:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 139 transitions. [2021-08-26 05:58:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 05:58:58,235 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:58:58,235 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:58:58,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 05:58:58,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-26 05:58:58,453 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:58:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:58:58,453 INFO L82 PathProgramCache]: Analyzing trace with hash 915495927, now seen corresponding path program 3 times [2021-08-26 05:58:58,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:58:58,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146397451] [2021-08-26 05:58:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:58:58,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:58:58,466 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:58:58,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887038297] [2021-08-26 05:58:58,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:58:58,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:58:58,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:58:58,467 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:58:58,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 05:58:59,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 05:58:59,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:58:59,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-26 05:58:59,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:58:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:58:59,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:58:59,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146397451] [2021-08-26 05:58:59,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:58:59,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887038297] [2021-08-26 05:58:59,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887038297] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:58:59,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:58:59,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-08-26 05:58:59,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127734027] [2021-08-26 05:58:59,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 05:58:59,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:58:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 05:58:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-08-26 05:58:59,791 INFO L87 Difference]: Start difference. First operand 125 states and 139 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:00,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:59:00,687 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2021-08-26 05:59:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-26 05:59:00,688 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 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 48 [2021-08-26 05:59:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:59:00,689 INFO L225 Difference]: With dead ends: 205 [2021-08-26 05:59:00,689 INFO L226 Difference]: Without dead ends: 203 [2021-08-26 05:59:00,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 680.0ms TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-08-26 05:59:00,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-08-26 05:59:00,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 156. [2021-08-26 05:59:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.1866666666666668) internal successors, (178), 155 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 178 transitions. [2021-08-26 05:59:00,710 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 178 transitions. Word has length 48 [2021-08-26 05:59:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:59:00,710 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 178 transitions. [2021-08-26 05:59:00,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 178 transitions. [2021-08-26 05:59:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 05:59:00,711 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:59:00,711 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:59:00,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 05:59:00,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:00,937 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:59:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:59:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2021-08-26 05:59:00,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:59:00,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088915035] [2021-08-26 05:59:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:59:00,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:59:00,945 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:59:00,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273671825] [2021-08-26 05:59:00,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:59:00,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:00,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:59:00,949 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:59:00,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 05:59:01,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:59:01,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:59:01,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-26 05:59:01,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:59:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:59:03,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:59:03,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088915035] [2021-08-26 05:59:03,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:59:03,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273671825] [2021-08-26 05:59:03,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273671825] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:59:03,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:59:03,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 05:59:03,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428337602] [2021-08-26 05:59:03,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 05:59:03,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:59:03,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 05:59:03,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:59:03,027 INFO L87 Difference]: Start difference. First operand 156 states and 178 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:59:03,572 INFO L93 Difference]: Finished difference Result 165 states and 183 transitions. [2021-08-26 05:59:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 05:59:03,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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 48 [2021-08-26 05:59:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:59:03,573 INFO L225 Difference]: With dead ends: 165 [2021-08-26 05:59:03,573 INFO L226 Difference]: Without dead ends: 161 [2021-08-26 05:59:03,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 283.3ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-08-26 05:59:03,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-26 05:59:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 154. [2021-08-26 05:59:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 153 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2021-08-26 05:59:03,586 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 48 [2021-08-26 05:59:03,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:59:03,586 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2021-08-26 05:59:03,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2021-08-26 05:59:03,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 05:59:03,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:59:03,587 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:59:03,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-26 05:59:03,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:03,793 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:59:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:59:03,793 INFO L82 PathProgramCache]: Analyzing trace with hash 194484878, now seen corresponding path program 3 times [2021-08-26 05:59:03,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:59:03,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992297808] [2021-08-26 05:59:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:59:03,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:59:03,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:59:03,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346368107] [2021-08-26 05:59:03,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:59:03,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:03,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:59:03,806 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:59:03,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 05:59:04,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:59:04,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:59:04,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 63 conjunts are in the unsatisfiable core [2021-08-26 05:59:04,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:59:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-26 05:59:07,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:59:07,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992297808] [2021-08-26 05:59:07,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:59:07,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346368107] [2021-08-26 05:59:07,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346368107] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:59:07,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:59:07,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-08-26 05:59:07,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209877577] [2021-08-26 05:59:07,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-26 05:59:07,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:59:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-26 05:59:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-08-26 05:59:07,303 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 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) [2021-08-26 05:59:09,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:59:09,790 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-08-26 05:59:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 05:59:09,790 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 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) Word has length 51 [2021-08-26 05:59:09,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:59:09,791 INFO L225 Difference]: With dead ends: 156 [2021-08-26 05:59:09,791 INFO L226 Difference]: Without dead ends: 146 [2021-08-26 05:59:09,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2890.9ms TimeCoverageRelationStatistics Valid=331, Invalid=859, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 05:59:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-26 05:59:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 78. [2021-08-26 05:59:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2021-08-26 05:59:09,801 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 51 [2021-08-26 05:59:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:59:09,801 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2021-08-26 05:59:09,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 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) [2021-08-26 05:59:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2021-08-26 05:59:09,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 05:59:09,802 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:59:09,802 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:59:09,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 05:59:10,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-08-26 05:59:10,006 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:59:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:59:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2078434191, now seen corresponding path program 1 times [2021-08-26 05:59:10,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:59:10,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022369657] [2021-08-26 05:59:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:59:10,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:59:10,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:59:10,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377010621] [2021-08-26 05:59:10,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:59:10,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:10,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:59:10,015 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:59:10,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 05:59:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:59:10,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:59:10,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:59:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:59:11,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:59:11,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022369657] [2021-08-26 05:59:11,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:59:11,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377010621] [2021-08-26 05:59:11,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377010621] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:59:11,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:59:11,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:59:11,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204166861] [2021-08-26 05:59:11,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:59:11,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:59:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:59:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:59:11,104 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:59:11,269 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2021-08-26 05:59:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:59:11,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-08-26 05:59:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:59:11,270 INFO L225 Difference]: With dead ends: 126 [2021-08-26 05:59:11,270 INFO L226 Difference]: Without dead ends: 120 [2021-08-26 05:59:11,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-08-26 05:59:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-26 05:59:11,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 90. [2021-08-26 05:59:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 89 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2021-08-26 05:59:11,284 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 53 [2021-08-26 05:59:11,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:59:11,284 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2021-08-26 05:59:11,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2021-08-26 05:59:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 05:59:11,285 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:59:11,285 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:59:11,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-08-26 05:59:11,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-08-26 05:59:11,501 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:59:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:59:11,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2074616969, now seen corresponding path program 1 times [2021-08-26 05:59:11,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:59:11,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561280792] [2021-08-26 05:59:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:59:11,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:59:11,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:59:11,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860113363] [2021-08-26 05:59:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:59:11,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:11,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:59:11,510 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:59:11,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 05:59:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:59:12,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 05:59:12,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:59:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 37 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:59:12,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:59:12,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561280792] [2021-08-26 05:59:12,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:59:12,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860113363] [2021-08-26 05:59:12,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860113363] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:59:12,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:59:12,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 05:59:12,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807091542] [2021-08-26 05:59:12,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:59:12,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:59:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:59:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:59:12,752 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:59:12,939 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2021-08-26 05:59:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:59:12,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 53 [2021-08-26 05:59:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:59:12,941 INFO L225 Difference]: With dead ends: 128 [2021-08-26 05:59:12,941 INFO L226 Difference]: Without dead ends: 87 [2021-08-26 05:59:12,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-08-26 05:59:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-26 05:59:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-08-26 05:59:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2021-08-26 05:59:12,951 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 53 [2021-08-26 05:59:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:59:12,951 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2021-08-26 05:59:12,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2021-08-26 05:59:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-26 05:59:12,952 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:59:12,952 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:59:12,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-26 05:59:13,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:13,157 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 05:59:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:59:13,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1979371639, now seen corresponding path program 2 times [2021-08-26 05:59:13,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:59:13,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168369301] [2021-08-26 05:59:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:59:13,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:59:13,165 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:59:13,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858710256] [2021-08-26 05:59:13,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:59:13,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:13,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:59:13,167 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:59:13,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 05:59:14,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:59:14,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:59:14,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 05:59:14,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:59:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-08-26 05:59:14,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:59:14,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168369301] [2021-08-26 05:59:14,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:59:14,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858710256] [2021-08-26 05:59:14,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858710256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:59:14,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:59:14,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 05:59:14,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760954146] [2021-08-26 05:59:14,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:59:14,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:59:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:59:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:59:14,336 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:59:14,620 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2021-08-26 05:59:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:59:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 62 [2021-08-26 05:59:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:59:14,621 INFO L225 Difference]: With dead ends: 87 [2021-08-26 05:59:14,621 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:59:14,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:59:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:59:14,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:59:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:59:14,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-08-26 05:59:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:59:14,622 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:59:14,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:59:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:59:14,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:59:14,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:59:14,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:59:14,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:59:14,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:59:14,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:59:14,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:59:14,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 05:59:14,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:59:14,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:59:14,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:14,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:15,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:15,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:15,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:15,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:15,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:15,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:15,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:59:24,693 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2021-08-26 05:59:28,076 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:59:28,076 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:59:28,076 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0))) (.cse14 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse3 (<= 0 ULTIMATE.start_main_~c~0)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= .cse0 .cse14)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~a~0 .cse14)) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* 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 ULTIMATE.start_main_~a~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2) .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~y~0) .cse7 (< ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~x~0)) (and .cse1 (= ULTIMATE.start_main_~k~0 0) .cse2 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse8 .cse7 .cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 .cse4 .cse5 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 .cse10 .cse11 (= ULTIMATE.start_main_~k~0 1) .cse12 .cse13)))) [2021-08-26 05:59:28,077 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:59:28,077 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0))) (.cse14 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse3 (<= 0 ULTIMATE.start_main_~c~0)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= .cse0 .cse14)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~a~0 .cse14)) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* 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 ULTIMATE.start_main_~a~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2) .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~y~0) .cse7 (< ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~x~0)) (and .cse1 .cse2 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 .cse4 .cse5 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 .cse10 .cse11 (= ULTIMATE.start_main_~k~0 1) .cse12 .cse13)))) [2021-08-26 05:59:28,077 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:59:28,077 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0))) (.cse14 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse3 (<= 0 ULTIMATE.start_main_~c~0)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= .cse0 .cse14)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~a~0 .cse14)) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* 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 ULTIMATE.start_main_~a~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2) .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~y~0) .cse7 (< ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~x~0)) (and .cse1 .cse2 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 .cse4 .cse5 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 .cse10 .cse11 (= ULTIMATE.start_main_~k~0 1) .cse12 .cse13)))) [2021-08-26 05:59:28,077 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:59:28,078 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 52 53) the Hoare annotation is: (let ((.cse13 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* 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 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse2 (<= 0 ULTIMATE.start_main_~c~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse13)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse6 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse7 (= ULTIMATE.start_main_~a~0 .cse13)) (.cse12 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* 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) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2) .cse2 .cse3 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~y~0) .cse6 (< ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~x~0) .cse7) (and .cse0 .cse1 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse5 .cse8 .cse6 .cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse7 .cse12) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse5 .cse8 .cse6 .cse9 .cse10 .cse11 (= ULTIMATE.start_main_~k~0 1) .cse7 .cse12)))) [2021-08-26 05:59:28,078 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:59:28,078 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:59:28,078 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:59:28,078 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~b~0)) (.cse1 (<= ULTIMATE.start_main_~y~0 2)) (.cse2 (<= ULTIMATE.start_main_~x~0 2)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 0) .cse2 .cse3 .cse4 .cse5) (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) 0) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (< (* 2 ULTIMATE.start_main_~b~0) 2) (< ULTIMATE.start_main_~c~0 2) (<= 0 ULTIMATE.start_main_~c~0) .cse2 .cse3 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) .cse4 .cse5))) [2021-08-26 05:59:28,078 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:59:28,079 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:59:28,079 INFO L860 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-08-26 05:59:28,079 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:59:28,079 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:59:28,079 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:59:28,079 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:59:28,079 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:59:28,080 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:59:28,080 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:59:28,080 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse21 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse0 (= (+ (* 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)) (.cse3 (<= 0 ULTIMATE.start_main_~b~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 2)) (.cse9 (<= 1 ULTIMATE.start_main_~y~0)) (.cse11 (< ULTIMATE.start_main_~b~0 2)) (.cse12 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (<= 0 ULTIMATE.start_main_~c~0)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse21)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse14 (= ULTIMATE.start_main_~k~0 0)) (.cse2 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse6 (<= ULTIMATE.start_main_~x~0 2)) (.cse16 (<= 1 ULTIMATE.start_main_~b~0)) (.cse10 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse17 (= ULTIMATE.start_main_~q~0 0)) (.cse15 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse18 (= ULTIMATE.start_main_~r~0 0)) (.cse19 (= ULTIMATE.start_main_~s~0 1)) (.cse13 (= ULTIMATE.start_main_~a~0 .cse21)) (.cse20 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 .cse6 .cse9 .cse10 .cse15 (not (= ULTIMATE.start_main_~b~0 0)) .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse5 .cse6 .cse7 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse8 .cse16 .cse10 .cse17 .cse18 .cse19 (= ULTIMATE.start_main_~k~0 1) .cse13 .cse20) (and .cse1 .cse14 .cse2 .cse6 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse16 .cse10 .cse17 .cse15 .cse18 .cse19 .cse13 .cse20)))) [2021-08-26 05:59:28,080 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-08-26 05:59:28,080 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:59:28,080 INFO L860 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2021-08-26 05:59:28,080 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:59:28,081 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:59:28,081 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:59:28,081 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:59:28,081 INFO L857 garLoopResultBuilder]: For program point L7-4(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:59:28,081 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:59:28,081 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:59:28,081 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 05:59:28,082 INFO L853 garLoopResultBuilder]: At program point L41-1(lines 7 68) the Hoare annotation is: (let ((.cse4 (< (* 2 ULTIMATE.start_main_~c~0) 2)) (.cse8 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse9 (<= 0 ULTIMATE.start_main_~b~0)) (.cse2 (<= 0 ULTIMATE.start_main_~c~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (= ULTIMATE.start_main_~k~0 0) .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 (<= ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~b~0) .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)) (and .cse8 (= (+ ULTIMATE.start_main_~s~0 1) 0) .cse9 (<= ULTIMATE.start_main_~a~0 2) (< (* 2 ULTIMATE.start_main_~b~0) 2) (= ULTIMATE.start_main_~p~0 0) .cse2 .cse4 (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) .cse7 (<= 0 ULTIMATE.start_main_~x~0)) (and (= (+ (* 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) .cse8 .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse9 (<= ULTIMATE.start_main_~y~0 2) (< ULTIMATE.start_main_~c~0 2) .cse2 .cse3 (<= 1 ULTIMATE.start_main_~y~0) .cse5 (< ULTIMATE.start_main_~b~0 2) .cse6 .cse7))) [2021-08-26 05:59:28,082 INFO L857 garLoopResultBuilder]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2021-08-26 05:59:28,082 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 05:59:28,082 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-08-26 05:59:28,082 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-08-26 05:59:28,082 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:59:28,082 INFO L857 garLoopResultBuilder]: For program point L8-8(line 8) no Hoare annotation was computed. [2021-08-26 05:59:28,083 INFO L857 garLoopResultBuilder]: For program point L8-10(line 8) no Hoare annotation was computed. [2021-08-26 05:59:28,083 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-08-26 05:59:28,083 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:59:28,086 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:59:28,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:59:28 BoogieIcfgContainer [2021-08-26 05:59:28,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:59:28,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:59:28,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:59:28,110 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:59:28,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:58:37" (3/4) ... [2021-08-26 05:59:28,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:59:28,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-08-26 05:59:28,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:59:28,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:59:28,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:59:28,164 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:59:28,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:59:28,167 INFO L168 Benchmark]: Toolchain (without parser) took 51264.28 ms. Allocated memory was 69.2 MB in the beginning and 446.7 MB in the end (delta: 377.5 MB). Free memory was 51.5 MB in the beginning and 359.4 MB in the end (delta: -307.8 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:59:28,168 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 69.2 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:59:28,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.38 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 41.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 05:59:28,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.95 ms. Allocated memory is still 69.2 MB. Free memory was 41.2 MB in the beginning and 52.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:59:28,170 INFO L168 Benchmark]: Boogie Preprocessor took 19.36 ms. Allocated memory is still 69.2 MB. Free memory was 52.1 MB in the beginning and 50.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:59:28,171 INFO L168 Benchmark]: RCFGBuilder took 382.77 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 51.2 MB in the end (delta: -434.6 kB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-08-26 05:59:28,171 INFO L168 Benchmark]: TraceAbstraction took 50557.59 ms. Allocated memory was 69.2 MB in the beginning and 446.7 MB in the end (delta: 377.5 MB). Free memory was 50.6 MB in the beginning and 363.6 MB in the end (delta: -313.0 MB). Peak memory consumption was 300.7 MB. Max. memory is 16.1 GB. [2021-08-26 05:59:28,171 INFO L168 Benchmark]: Witness Printer took 56.85 ms. Allocated memory is still 446.7 MB. Free memory was 363.6 MB in the beginning and 359.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:59:28,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 69.2 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 187.38 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 41.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.95 ms. Allocated memory is still 69.2 MB. Free memory was 41.2 MB in the beginning and 52.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.36 ms. Allocated memory is still 69.2 MB. Free memory was 52.1 MB in the beginning and 50.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 382.77 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 51.2 MB in the end (delta: -434.6 kB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 50557.59 ms. Allocated memory was 69.2 MB in the beginning and 446.7 MB in the end (delta: 377.5 MB). Free memory was 50.6 MB in the beginning and 363.6 MB in the end (delta: -313.0 MB). Peak memory consumption was 300.7 MB. Max. memory is 16.1 GB. * Witness Printer took 56.85 ms. Allocated memory is still 446.7 MB. Free memory was 363.6 MB in the beginning and 359.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 45 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 50491.5ms, OverallIterations: 24, TraceHistogramMax: 4, EmptinessCheckTime: 27.2ms, AutomataDifference: 8532.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 13228.2ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 825 SDtfs, 2445 SDslu, 3016 SDs, 0 SdLazy, 3597 SolverSat, 398 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2901.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 981 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 6925.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=16, InterpolantAutomatonStates: 264, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 261.1ms AutomataMinimizationTime, 24 MinimizatonAttempts, 430 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 49 NumberOfFragments, 1357 HoareAnnotationTreeSize, 9 FomulaSimplifications, 131797 FormulaSimplificationTreeSizeReduction, 717.7ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 10412 FormulaSimplificationTreeSizeReductionInter, 12499.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 191.9ms SsaConstructionTime, 600.7ms SatisfiabilityAnalysisTime, 12645.4ms InterpolantComputationTime, 865 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 841 ConstructedInterpolants, 0 QuantifiedInterpolants, 8254 SizeOfPredicates, 251 NumberOfNonLiveVariables, 3549 ConjunctsInSsa, 548 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 200/376 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 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) || (((((((((((((((cond == 1 && x * y == xy) && x <= 2) && 1 == cond) && 1 <= c) && b <= 2) && a <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) || (((((((((((((((cond == 1 && x * y == xy) && x <= 2) && 1 == cond) && 1 <= c) && b <= 2) && a <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((s * y + q * x == b && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) && a == r * y + p * x) || (((((((((((((((s * y + q * x == b && cond == 1) && k == 0) && b < c) && x * y == xy) && 1 <= cond) && 0 <= b) && y <= 2) && x <= 2) && 1 <= y) && yy == y * y) && c == a) && !(b == 0)) && b < 2) && 1 <= x) && a == r * y + p * x)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && k == 0) && x * y == xy) && x <= 2) && 1 <= c) && b <= 2) && a <= x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((((((s * y + q * x == b && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) && a == r * y + p * x) || (((((((((((((((cond == 1 && x * y == xy) && x <= 2) && 1 == cond) && 1 <= c) && b <= 2) && a <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((0 <= b && y <= 2) && p == 0) && x <= 2) && 1 <= y) && 1 <= x) && a == r * y + p * x) || ((((((((((((((b < a && cond == 1) && s * y + q * x == 0) && x * y == xy) && 1 <= cond) && 0 <= b) && y <= 2) && 2 * b < 2) && c < 2) && 0 <= c) && x <= 2) && 1 <= y) && yy == y * y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) || (((((((((((((((cond == 1 && k == 0) && x * y == xy) && x <= 2) && 1 == cond) && 1 <= c) && b <= 2) && a <= x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: ((((((((((((((((cond == 1 && k == 0) && x * y == xy) && p == 1) && 0 <= c) && x <= 2) && b <= 2) && 1 <= b) && 2 * c < 2) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || (((((((((((b < a && s + 1 == 0) && 0 <= b) && a <= 2) && 2 * b < 2) && p == 0) && 0 <= c) && 2 * c < 2) && q == 1) && x == b + y) && a == r * y + p * x) && 0 <= x)) || ((((((((((((((s * y + q * x == b && b < a) && cond == 1) && x * y == xy) && 1 <= cond) && 0 <= b) && y <= 2) && c < 2) && 0 <= c) && x <= 2) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) && a == r * y + p * x) RESULT: Ultimate proved your program to be correct! [2021-08-26 05:59:28,207 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...